diff --git a/.cargo/config.toml b/.cargo/config.toml new file mode 100644 index 0000000000..a590c044d8 --- /dev/null +++ b/.cargo/config.toml @@ -0,0 +1,5 @@ +[target.'cfg(target_env = "msvc")'] +rustflags = "-C link-arg=/STACK:8000000" + +[target.'cfg(all(target_os = "windows", not(target_env = "msvc")))'] +rustflags = "-C link-args=-Wl,--stack,8000000" diff --git a/.cspell.dict/cpython.txt b/.cspell.dict/cpython.txt new file mode 100644 index 0000000000..d28a4bb8c5 --- /dev/null +++ b/.cspell.dict/cpython.txt @@ -0,0 +1,59 @@ +argtypes +asdl +asname +augassign +badsyntax +basetype +boolop +bxor +cached_tsver +cellarg +cellvar +cellvars +cmpop +denom +dictoffset +elts +excepthandler +fileutils +finalbody +formatfloat +freevar +freevars +fromlist +heaptype +HIGHRES +IMMUTABLETYPE +kwonlyarg +kwonlyargs +lasti +linearise +maxdepth +mult +nkwargs +noraise +numer +orelse +pathconfig +patma +posonlyarg +posonlyargs +prec +preinitialized +PYTHREAD_NAME +SA_ONSTACK +stackdepth +stringlib +structseq +tok_oldval +unaryop +unparse +unparser +VARKEYWORDS +varkwarg +wbits +weakreflist +withitem +withs +xstat +XXPRIME \ No newline at end of file diff --git a/.cspell.dict/python-more.txt b/.cspell.dict/python-more.txt new file mode 100644 index 0000000000..0404428324 --- /dev/null +++ b/.cspell.dict/python-more.txt @@ -0,0 +1,257 @@ +abiflags +abstractmethods +aenter +aexit +aiter +anext +appendleft +argcount +arrayiterator +arraytype +asend +asyncgen +athrow +backslashreplace +baserepl +basicsize +bdfl +bigcharset +bignum +breakpointhook +cformat +chunksize +classcell +closefd +closesocket +codepoint +codepoints +codesize +contextvar +cpython +cratio +dealloc +debugbuild +decompressor +defaultaction +descr +dictcomp +dictitems +dictkeys +dictview +digestmod +dllhandle +docstring +docstrings +dunder +endianness +endpos +eventmask +excepthook +exceptiongroup +exitfuncs +extendleft +fastlocals +fdel +fedcba +fget +fileencoding +fillchar +fillvalue +finallyhandler +firstiter +firstlineno +fnctl +frombytes +fromhex +fromunicode +fset +fspath +fstring +fstrings +ftruncate +genexpr +getattro +getcodesize +getdefaultencoding +getfilesystemencodeerrors +getfilesystemencoding +getformat +getframe +getnewargs +getpip +getrandom +getrecursionlimit +getrefcount +getsizeof +getweakrefcount +getweakrefs +getwindowsversion +gmtoff +groupdict +groupindex +hamt +hostnames +idfunc +idiv +idxs +impls +indexgroup +infj +instancecheck +instanceof +irepeat +isabstractmethod +isbytes +iscased +isfinal +istext +itemiterator +itemsize +iternext +keepends +keyfunc +keyiterator +kwarg +kwargs +kwdefaults +kwonlyargcount +lastgroup +lastindex +linearization +linearize +listcomp +longrange +lvalue +mappingproxy +maskpri +maxdigits +MAXGROUPS +MAXREPEAT +maxsplit +maxunicode +memoryview +memoryviewiterator +metaclass +metaclasses +metatype +mformat +mro +mros +multiarch +namereplace +nanj +nbytes +ncallbacks +ndigits +ndim +nldecoder +nlocals +NOARGS +nonbytes +Nonprintable +origname +ospath +pendingcr +phello +platlibdir +popleft +posixsubprocess +posonly +posonlyargcount +prepending +profilefunc +pycache +pycodecs +pycs +pyexpat +PYTHONBREAKPOINT +PYTHONDEBUG +PYTHONHASHSEED +PYTHONHOME +PYTHONINSPECT +PYTHONOPTIMIZE +PYTHONPATH +PYTHONPATH +PYTHONSAFEPATH +PYTHONVERBOSE +PYTHONWARNDEFAULTENCODING +PYTHONWARNINGS +pytraverse +PYVENV +qualname +quotetabs +radd +rdiv +rdivmod +readall +readbuffer +reconstructor +refcnt +releaselevel +reverseitemiterator +reverseiterator +reversekeyiterator +reversevalueiterator +rfloordiv +rlshift +rmod +rpow +rrshift +rsub +rtruediv +rvalue +scproxy +seennl +setattro +setcomp +setrecursionlimit +showwarnmsg +signum +slotnames +STACKLESS +stacklevel +stacksize +startpos +subclassable +subclasscheck +subclasshook +suboffset +suboffsets +SUBPATTERN +sumprod +surrogateescape +surrogatepass +sysconf +sysconfigdata +sysvars +teedata +thisclass +titlecased +tkapp +tobytes +tolist +toreadonly +TPFLAGS +tracefunc +unimportable +unionable +unraisablehook +unsliceable +urandom +valueiterator +vararg +varargs +varnames +warningregistry +warnmsg +warnoptions +warnopts +weaklist +weakproxy +weakrefs +winver +withdata +xmlcharrefreplace +xoptions +xopts +yieldfrom diff --git a/.cspell.dict/rust-more.txt b/.cspell.dict/rust-more.txt new file mode 100644 index 0000000000..6a98daa9db --- /dev/null +++ b/.cspell.dict/rust-more.txt @@ -0,0 +1,82 @@ +ahash +arrayvec +bidi +biguint +bindgen +bitflags +bitor +bstr +byteorder +byteset +caseless +chrono +consts +cranelift +cstring +datelike +deserializer +fdiv +flamescope +flate2 +fract +getres +hasher +hexf +hexversion +idents +illumos +indexmap +insta +keccak +lalrpop +lexopt +libc +libloading +libz +longlong +Manually +maplit +memmap +memmem +metas +modpow +msvc +muldiv +nanos +nonoverlapping +objclass +peekable +powc +powf +powi +prepended +punct +replacen +rmatch +rposition +rsplitn +rustc +rustfmt +rustyline +seedable +seekfrom +siphash +siphasher +splitn +subsec +thiserror +timelike +timsort +trai +ulonglong +unic +unistd +unraw +unsync +wasip1 +wasip2 +wasmbind +wasmtime +widestring +winapi +winsock diff --git a/.cspell.json b/.cspell.json new file mode 100644 index 0000000000..98a03180fe --- /dev/null +++ b/.cspell.json @@ -0,0 +1,146 @@ +// See: https://github.com/streetsidesoftware/cspell/tree/master/packages/cspell +{ + "version": "0.2", + "import": [ + "@cspell/dict-en_us/cspell-ext.json", + // "@cspell/dict-cpp/cspell-ext.json", + "@cspell/dict-python/cspell-ext.json", + "@cspell/dict-rust/cspell-ext.json", + "@cspell/dict-win32/cspell-ext.json", + "@cspell/dict-shell/cspell-ext.json", + ], + // language - current active spelling language + "language": "en", + // dictionaries - list of the names of the dictionaries to use + "dictionaries": [ + "cpython", // Sometimes keeping same terms with cpython is easy + "python-more", // Python API terms not listed in python + "rust-more", // Rust API terms not listed in rust + "en_US", + "softwareTerms", + "c", + "cpp", + "python", + "rust", + "shell", + "win32" + ], + // dictionaryDefinitions - this list defines any custom dictionaries to use + "dictionaryDefinitions": [ + { + "name": "cpython", + "path": "./.cspell.dict/cpython.txt" + }, + { + "name": "python-more", + "path": "./.cspell.dict/python-more.txt" + }, + { + "name": "rust-more", + "path": "./.cspell.dict/rust-more.txt" + } + ], + "ignorePaths": [ + "**/__pycache__/**", + "Lib/**" + ], + // words - list of words to be always considered correct + "words": [ + "RUSTPYTHONPATH", + // RustPython terms + "aiterable", + "alnum", + "baseclass", + "boxvec", + "Bytecode", + "cfgs", + "codegen", + "coro", + "dedentations", + "dedents", + "deduped", + "downcasted", + "dumpable", + "emscripten", + "excs", + "finalizer", + "GetSet", + "groupref", + "internable", + "lossily", + "makeunicodedata", + "miri", + "notrace", + "openat", + "pyarg", + "pyarg", + "pyargs", + "pyast", + "PyAttr", + "pyc", + "PyClass", + "PyClassMethod", + "PyException", + "PyFunction", + "pygetset", + "pyimpl", + "pylib", + "pymember", + "PyMethod", + "PyModule", + "pyname", + "pyobj", + "PyObject", + "pypayload", + "PyProperty", + "pyref", + "PyResult", + "pyslot", + "PyStaticMethod", + "pystone", + "pystr", + "pystruct", + "pystructseq", + "pytrace", + "reducelib", + "richcompare", + "RustPython", + "significand", + "struc", + "summands", // plural of summand + "sysmodule", + "tracebacks", + "typealiases", + "unconstructible", + "unhashable", + "uninit", + "unraisable", + "unresizable", + "wasi", + "zelf", + // unix + "CLOEXEC", + "codeset", + "endgrent", + "gethrvtime", + "getrusage", + "nanosleep", + "sigaction", + "WRLCK", + // win32 + "birthtime", + "IFEXEC", + ], + // flagWords - list of words to be always considered incorrect + "flagWords": [ + ], + "ignoreRegExpList": [ + ], + // languageSettings - allow for per programming language configuration settings. + "languageSettings": [ + { + "languageId": "python", + "locale": "en" + } + ] +} diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile new file mode 100644 index 0000000000..339cdb69bb --- /dev/null +++ b/.devcontainer/Dockerfile @@ -0,0 +1,6 @@ +FROM mcr.microsoft.com/vscode/devcontainers/rust:1-bullseye + +# Install clang +RUN apt-get update \ + && apt-get install -y clang \ + && rm -rf /var/lib/apt/lists/* diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json new file mode 100644 index 0000000000..8838cf6a96 --- /dev/null +++ b/.devcontainer/devcontainer.json @@ -0,0 +1,25 @@ +{ + "name": "Rust", + "build": { + "dockerfile": "Dockerfile" + }, + "runArgs": ["--cap-add=SYS_PTRACE", "--security-opt", "seccomp=unconfined"], + "customizations": { + "vscode": { + "settings": { + "lldb.executable": "/usr/bin/lldb", + // VS Code don't watch files under ./target + "files.watcherExclude": { + "**/target/**": true + }, + "extensions": [ + "rust-lang.rust-analyzer", + "tamasfe.even-better-toml", + "vadimcn.vscode-lldb", + "mutantdino.resourcemonitor" + ] + } + } + }, + "remoteUser": "vscode" +} diff --git a/.dockerignore b/.dockerignore index a11978cb00..d22dc864b9 100644 --- a/.dockerignore +++ b/.dockerignore @@ -1,2 +1,19 @@ -target -**/node_modules \ No newline at end of file +**/target/ +**/*.rs.bk +**/*.bytecode +**/__pycache__/* +**/*.pytest_cache +.*sw* +.repl_history.txt +.vscode +wasm-pack.log +.idea/ +extra_tests/snippets/resources + +flame-graph.html +flame.txt +flamescope.json + +**/node_modules/ +wasm/**/dist/ +wasm/lib/pkg/ diff --git a/.flake8 b/.flake8 new file mode 100644 index 0000000000..f848263ced --- /dev/null +++ b/.flake8 @@ -0,0 +1,3 @@ +[flake8] +# black's line length +max-line-length = 88 diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000000..f54bcd3b72 --- /dev/null +++ b/.gitattributes @@ -0,0 +1,7 @@ +Lib/** linguist-vendored +Cargo.lock linguist-generated +*.snap linguist-generated -merge +vm/src/stdlib/ast/gen.rs linguist-generated -merge +Lib/*.py text working-tree-encoding=UTF-8 eol=LF +**/*.rs text working-tree-encoding=UTF-8 eol=LF +*.pck binary diff --git a/.github/ISSUE_TEMPLATE/empty.md b/.github/ISSUE_TEMPLATE/empty.md new file mode 100644 index 0000000000..6cdafc6653 --- /dev/null +++ b/.github/ISSUE_TEMPLATE/empty.md @@ -0,0 +1,16 @@ +--- +name: Generic issue template +about: which is not covered by other templates +title: '' +labels: +assignees: '' + +--- + +## Summary + + + +## Details + + diff --git a/.github/ISSUE_TEMPLATE/feature-request.md b/.github/ISSUE_TEMPLATE/feature-request.md new file mode 100644 index 0000000000..cb47cb1744 --- /dev/null +++ b/.github/ISSUE_TEMPLATE/feature-request.md @@ -0,0 +1,16 @@ +--- +name: Feature request +about: Request a feature to use RustPython (as a Rust library) +title: '' +labels: C-enhancement +assignees: 'youknowone' + +--- + +## Summary + + + +## Expected use case + + diff --git a/.github/ISSUE_TEMPLATE/report-bug.md b/.github/ISSUE_TEMPLATE/report-bug.md new file mode 100644 index 0000000000..f25b035232 --- /dev/null +++ b/.github/ISSUE_TEMPLATE/report-bug.md @@ -0,0 +1,24 @@ +--- +name: Report bugs +about: Report a bug not related to CPython compatibility +title: '' +labels: C-bug +assignees: '' + +--- + +## Summary + + + +## Expected + + + +## Actual + + + +## Python Documentation + + diff --git a/.github/ISSUE_TEMPLATE/report-incompatibility.md b/.github/ISSUE_TEMPLATE/report-incompatibility.md new file mode 100644 index 0000000000..d8e50a75ce --- /dev/null +++ b/.github/ISSUE_TEMPLATE/report-incompatibility.md @@ -0,0 +1,16 @@ +--- +name: Report incompatibility +about: Report an incompatibility between RustPython and CPython +title: '' +labels: C-compat +assignees: '' + +--- + +## Feature + + + +## Python Documentation or reference to CPython source code + + diff --git a/.github/ISSUE_TEMPLATE/rfc.md b/.github/ISSUE_TEMPLATE/rfc.md new file mode 100644 index 0000000000..84a7b19ce7 --- /dev/null +++ b/.github/ISSUE_TEMPLATE/rfc.md @@ -0,0 +1,24 @@ +--- +name: RFC +about: Make a suggestion in a Request for Comments format to RustPython +title: "[RFC] " +labels: RFC +assignees: '' + +--- + +## Summary + + + +## Detailed Explanation + + + +## Drawbacks, Rationale, and Alternatives + + + +## Unresolved Questions + + diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md new file mode 100644 index 0000000000..2991e3c626 --- /dev/null +++ b/.github/copilot-instructions.md @@ -0,0 +1,186 @@ +# GitHub Copilot Instructions for RustPython + +This document provides guidelines for working with GitHub Copilot when contributing to the RustPython project. + +## Project Overview + +RustPython is a Python 3 interpreter written in Rust, implementing Python 3.13.0+ compatibility. The project aims to provide: + +- A complete Python-3 environment entirely in Rust (not CPython bindings) +- A clean implementation without compatibility hacks +- Cross-platform support, including WebAssembly compilation +- The ability to embed Python scripting in Rust applications + +## Repository Structure + +- `src/` - Top-level code for the RustPython binary +- `vm/` - The Python virtual machine implementation + - `builtins/` - Python built-in types and functions + - `stdlib/` - Essential standard library modules implemented in Rust, required to run the Python core +- `compiler/` - Python compiler components + - `parser/` - Parser for converting Python source to AST + - `core/` - Bytecode representation in Rust structures + - `codegen/` - AST to bytecode compiler +- `Lib/` - CPython's standard library in Python (copied from CPython) +- `derive/` - Rust macros for RustPython +- `common/` - Common utilities +- `extra_tests/` - Integration tests and snippets +- `stdlib/` - Non-essential Python standard library modules implemented in Rust (useful but not required for core functionality) +- `wasm/` - WebAssembly support +- `jit/` - Experimental JIT compiler implementation +- `pylib/` - Python standard library packaging (do not modify this directory directly - its contents are generated automatically) + +## Important Development Notes + +### Running Python Code + +When testing Python code, always use RustPython instead of the standard `python` command: + +```bash +# Use this instead of python script.py +cargo run -- script.py + +# For interactive REPL +cargo run + +# With specific features +cargo run --features ssl + +# Release mode (recommended for better performance) +cargo run --release -- script.py +``` + +### Comparing with CPython + +When you need to compare behavior with CPython or run test suites: + +```bash +# Use python command to explicitly run CPython +python my_test_script.py + +# Run RustPython +cargo run -- my_test_script.py +``` + +### Working with the Lib Directory + +The `Lib/` directory contains Python standard library files copied from the CPython repository. Important notes: + +- These files should be edited very conservatively +- Modifications should be minimal and only to work around RustPython limitations +- Tests in `Lib/test` often use one of the following markers: + - Add a `# TODO: RUSTPYTHON` comment when modifications are made + - `unittest.skip("TODO: RustPython ")` + - `unittest.expectedFailure` with `# TODO: RUSTPYTHON ` comment + +### Testing + +```bash +# Run Rust unit tests +cargo test --workspace --exclude rustpython_wasm + +# Run Python snippets tests +cd extra_tests +pytest -v + +# Run the Python test module +cargo run --release -- -m test +``` + +### Determining What to Implement + +Run `./whats_left.py` to get a list of unimplemented methods, which is helpful when looking for contribution opportunities. + +## Coding Guidelines + +### Rust Code + +- Follow the default rustfmt code style (`cargo fmt` to format) +- Use clippy to lint code (`cargo clippy`) +- Follow Rust best practices for error handling and memory management +- Use the macro system (`pyclass`, `pymodule`, `pyfunction`, etc.) when implementing Python functionality in Rust + +### Python Code + +- Follow PEP 8 style for custom Python code +- Use ruff for linting Python code +- Minimize modifications to CPython standard library files + +## Integration Between Rust and Python + +The project provides several mechanisms for integration: + +- `pymodule` macro for creating Python modules in Rust +- `pyclass` macro for implementing Python classes in Rust +- `pyfunction` macro for exposing Rust functions to Python +- `PyObjectRef` and other types for working with Python objects in Rust + +## Common Patterns + +### Implementing a Python Module in Rust + +```rust +#[pymodule] +mod mymodule { + use rustpython_vm::prelude::*; + + #[pyfunction] + fn my_function(value: i32) -> i32 { + value * 2 + } + + #[pyattr] + #[pyclass(name = "MyClass")] + #[derive(Debug, PyPayload)] + struct MyClass { + value: usize, + } + + #[pyclass] + impl MyClass { + #[pymethod] + fn get_value(&self) -> usize { + self.value + } + } +} +``` + +### Adding a Python Module to the Interpreter + +```rust +vm.add_native_module( + "my_module_name".to_owned(), + Box::new(my_module::make_module), +); +``` + +## Building for Different Targets + +### WebAssembly + +```bash +# Build for WASM +cargo build --target wasm32-wasip1 --no-default-features --features freeze-stdlib,stdlib --release +``` + +### JIT Support + +```bash +# Enable JIT support +cargo run --features jit +``` + +### SSL Support + +```bash +# Enable SSL support +cargo run --features ssl +``` + +## Documentation + +- Check the [architecture document](architecture/architecture.md) for a high-level overview +- Read the [development guide](DEVELOPMENT.md) for detailed setup instructions +- Generate documentation with `cargo doc --no-deps --all` +- Online documentation is available at [docs.rs/rustpython](https://docs.rs/rustpython/) \ No newline at end of file diff --git a/.github/dependabot.yml b/.github/dependabot.yml new file mode 100644 index 0000000000..be006de9a1 --- /dev/null +++ b/.github/dependabot.yml @@ -0,0 +1,13 @@ +# Keep GitHub Actions up to date with GitHub's Dependabot... +# https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot +# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem +version: 2 +updates: + - package-ecosystem: github-actions + directory: / + groups: + github-actions: + patterns: + - "*" # Group all Actions updates into a single larger pull request + schedule: + interval: weekly diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml new file mode 100644 index 0000000000..487cb3e0c9 --- /dev/null +++ b/.github/workflows/ci.yaml @@ -0,0 +1,445 @@ +on: + push: + branches: [main, release] + pull_request: + types: [unlabeled, opened, synchronize, reopened] + merge_group: + workflow_dispatch: + +name: CI + +# Cancel previous workflows if they are the same workflow on same ref (branch/tags) +# with the same event (push/pull_request) even they are in progress. +# This setting will help reduce the number of duplicated workflows. +concurrency: + group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }} + cancel-in-progress: true + +env: + CARGO_ARGS: --no-default-features --features stdlib,importlib,stdio,encodings,sqlite,ssl + # Skip additional tests on Windows. They are checked on Linux and MacOS. + # test_glob: many failing tests + # test_io: many failing tests + # test_os: many failing tests + # test_pathlib: support.rmtree() failing + # test_posixpath: OSError: (22, 'The filename, directory name, or volume label syntax is incorrect. (os error 123)') + # test_venv: couple of failing tests + WINDOWS_SKIPS: >- + test_glob + test_io + test_os + test_rlcompleter + test_pathlib + test_posixpath + test_venv + # configparser: https://github.com/RustPython/RustPython/issues/4995#issuecomment-1582397417 + # socketserver: seems related to configparser crash. + MACOS_SKIPS: >- + test_configparser + test_socketserver + # PLATFORM_INDEPENDENT_TESTS are tests that do not depend on the underlying OS. They are currently + # only run on Linux to speed up the CI. + PLATFORM_INDEPENDENT_TESTS: >- + test__colorize + test_array + test_asyncgen + test_binop + test_bisect + test_bool + test_bytes + test_call + test_class + test_cmath + test_collections + test_complex + test_contains + test_copy + test_dataclasses + test_decimal + test_decorators + test_defaultdict + test_deque + test_dict + test_dictcomps + test_dictviews + test_dis + test_enumerate + test_exception_variations + test_float + test_format + test_fractions + test_genericalias + test_genericclass + test_grammar + test_range + test_index + test_int + test_int_literal + test_isinstance + test_iter + test_iterlen + test_itertools + test_json + test_keyword + test_keywordonlyarg + test_list + test_long + test_longexp + test_math + test_operator + test_ordered_dict + test_pow + test_raise + test_richcmp + test_scope + test_set + test_slice + test_sort + test_string + test_string_literals + test_strtod + test_structseq + test_subclassinit + test_super + test_syntax + test_tuple + test_types + test_unary + test_unpack + test_weakref + test_yield_from + # Python version targeted by the CI. + PYTHON_VERSION: "3.13.1" + +jobs: + rust_tests: + if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip:ci') }} + env: + RUST_BACKTRACE: full + name: Run rust tests + runs-on: ${{ matrix.os }} + strategy: + matrix: + os: [macos-latest, ubuntu-latest, windows-latest] + fail-fast: false + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + with: + components: clippy + - uses: Swatinem/rust-cache@v2 + + - name: Set up the Windows environment + shell: bash + run: | + git config --system core.longpaths true + cargo install --target-dir=target -v cargo-vcpkg + cargo vcpkg -v build + if: runner.os == 'Windows' + - name: Set up the Mac environment + run: brew install autoconf automake libtool + if: runner.os == 'macOS' + + - name: run clippy + run: cargo clippy ${{ env.CARGO_ARGS }} --workspace --all-targets --exclude rustpython_wasm -- -Dwarnings + + - name: run rust tests + run: cargo test --workspace --exclude rustpython_wasm --verbose --features threading ${{ env.CARGO_ARGS }} + if: runner.os != 'macOS' + - name: run rust tests + run: cargo test --workspace --exclude rustpython_wasm --exclude rustpython-jit --verbose --features threading ${{ env.CARGO_ARGS }} + if: runner.os == 'macOS' + + - name: check compilation without threading + run: cargo check ${{ env.CARGO_ARGS }} + + - name: Test example projects + run: + cargo run --manifest-path example_projects/barebone/Cargo.toml + cargo run --manifest-path example_projects/frozen_stdlib/Cargo.toml + if: runner.os == 'Linux' + + - name: prepare AppleSilicon build + uses: dtolnay/rust-toolchain@stable + with: + target: aarch64-apple-darwin + if: runner.os == 'macOS' + - name: Check compilation for Apple Silicon + run: cargo check --target aarch64-apple-darwin + if: runner.os == 'macOS' + - name: prepare iOS build + uses: dtolnay/rust-toolchain@stable + with: + target: aarch64-apple-ios + if: runner.os == 'macOS' + - name: Check compilation for iOS + run: cargo check --target aarch64-apple-ios + if: runner.os == 'macOS' + + exotic_targets: + if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip:ci') }} + name: Ensure compilation on various targets + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + with: + target: i686-unknown-linux-gnu + + - name: Install gcc-multilib and musl-tools + run: sudo apt-get update && sudo apt-get install gcc-multilib musl-tools + - name: Check compilation for x86 32bit + run: cargo check --target i686-unknown-linux-gnu + + - uses: dtolnay/rust-toolchain@stable + with: + target: aarch64-linux-android + + - name: Check compilation for android + run: cargo check --target aarch64-linux-android + + - uses: dtolnay/rust-toolchain@stable + with: + target: aarch64-unknown-linux-gnu + + - name: Install gcc-aarch64-linux-gnu + run: sudo apt install gcc-aarch64-linux-gnu + - name: Check compilation for aarch64 linux gnu + run: cargo check --target aarch64-unknown-linux-gnu + + - uses: dtolnay/rust-toolchain@stable + with: + target: i686-unknown-linux-musl + + - name: Check compilation for musl + run: cargo check --target i686-unknown-linux-musl + + - uses: dtolnay/rust-toolchain@stable + with: + target: x86_64-unknown-freebsd + + - name: Check compilation for freebsd + run: cargo check --target x86_64-unknown-freebsd + + - uses: dtolnay/rust-toolchain@stable + with: + target: x86_64-unknown-freebsd + + - name: Check compilation for freeBSD + run: cargo check --target x86_64-unknown-freebsd + + - name: Prepare repository for redox compilation + run: bash scripts/redox/uncomment-cargo.sh + - name: Check compilation for Redox + uses: coolreader18/redoxer-action@v1 + with: + command: check + args: --ignore-rust-version + + snippets_cpython: + if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip:ci') }} + env: + RUST_BACKTRACE: full + name: Run snippets and cpython tests + runs-on: ${{ matrix.os }} + strategy: + matrix: + os: [macos-latest, ubuntu-latest, windows-latest] + fail-fast: false + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + - uses: Swatinem/rust-cache@v2 + - uses: actions/setup-python@v5 + with: + python-version: ${{ env.PYTHON_VERSION }} + - name: Set up the Windows environment + shell: bash + run: | + git config --system core.longpaths true + cargo install cargo-vcpkg + cargo vcpkg build + if: runner.os == 'Windows' + - name: Set up the Mac environment + run: brew install autoconf automake libtool openssl@3 + if: runner.os == 'macOS' + - name: build rustpython + run: cargo build --release --verbose --features=threading ${{ env.CARGO_ARGS }} + if: runner.os == 'macOS' + - name: build rustpython + run: cargo build --release --verbose --features=threading ${{ env.CARGO_ARGS }},jit + if: runner.os != 'macOS' + - uses: actions/setup-python@v5 + with: + python-version: ${{ env.PYTHON_VERSION }} + - name: run snippets + run: python -m pip install -r requirements.txt && pytest -v + working-directory: ./extra_tests + - if: runner.os == 'Linux' + name: run cpython platform-independent tests + run: + target/release/rustpython -m test -j 1 -u all --slowest --fail-env-changed -v ${{ env.PLATFORM_INDEPENDENT_TESTS }} + - if: runner.os == 'Linux' + name: run cpython platform-dependent tests (Linux) + run: target/release/rustpython -m test -j 1 -u all --slowest --fail-env-changed -v -x ${{ env.PLATFORM_INDEPENDENT_TESTS }} + - if: runner.os == 'macOS' + name: run cpython platform-dependent tests (MacOS) + run: target/release/rustpython -m test -j 1 --slowest --fail-env-changed -v -x ${{ env.PLATFORM_INDEPENDENT_TESTS }} ${{ env.MACOS_SKIPS }} + - if: runner.os == 'Windows' + name: run cpython platform-dependent tests (windows partial - fixme) + run: + target/release/rustpython -m test -j 1 --slowest --fail-env-changed -v -x ${{ env.PLATFORM_INDEPENDENT_TESTS }} ${{ env.WINDOWS_SKIPS }} + - if: runner.os != 'Windows' + name: check that --install-pip succeeds + run: | + mkdir site-packages + target/release/rustpython --install-pip ensurepip --user + target/release/rustpython -m pip install six + - if: runner.os != 'Windows' + name: Check that ensurepip succeeds. + run: | + target/release/rustpython -m ensurepip + target/release/rustpython -c "import pip" + - if: runner.os != 'Windows' + name: Check if pip inside venv is functional + run: | + target/release/rustpython -m venv testvenv + testvenv/bin/rustpython -m pip install wheel + - name: Check whats_left is not broken + run: python -I whats_left.py + + lint: + name: Check Rust code with rustfmt and clippy + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + with: + components: rustfmt, clippy + - name: run rustfmt + run: cargo fmt --check + - name: run clippy on wasm + run: cargo clippy --manifest-path=wasm/lib/Cargo.toml -- -Dwarnings + - uses: actions/setup-python@v5 + with: + python-version: ${{ env.PYTHON_VERSION }} + - name: install ruff + run: python -m pip install ruff==0.11.8 + - name: Ensure docs generate no warnings + run: cargo doc + - name: run ruff check + run: ruff check --diff + - name: run ruff format + run: ruff format --check + - name: install prettier + run: yarn global add prettier && echo "$(yarn global bin)" >>$GITHUB_PATH + - name: check wasm code with prettier + # prettier doesn't handle ignore files very well: https://github.com/prettier/prettier/issues/8506 + run: cd wasm && git ls-files -z | xargs -0 prettier --check -u + # Keep cspell check as the last step. This is optional test. + - name: install extra dictionaries + run: npm install @cspell/dict-en_us @cspell/dict-cpp @cspell/dict-python @cspell/dict-rust @cspell/dict-win32 @cspell/dict-shell + - name: spell checker + uses: streetsidesoftware/cspell-action@v7 + with: + files: '**/*.rs' + incremental_files_only: true + + miri: + if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip:ci') }} + name: Run tests under miri + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@master + with: + toolchain: nightly + components: miri + + - uses: Swatinem/rust-cache@v2 + - name: Run tests under miri + # miri-ignore-leaks because the type-object circular reference means that there will always be + # a memory leak, at least until we have proper cyclic gc + run: MIRIFLAGS='-Zmiri-ignore-leaks' cargo +nightly miri test -p rustpython-vm -- miri_test + + wasm: + if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip:ci') }} + name: Check the WASM package and demo + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + + - uses: Swatinem/rust-cache@v2 + - name: install wasm-pack + run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh + - name: install geckodriver + run: | + wget https://github.com/mozilla/geckodriver/releases/download/v0.36.0/geckodriver-v0.36.0-linux64.tar.gz + mkdir geckodriver + tar -xzf geckodriver-v0.36.0-linux64.tar.gz -C geckodriver + - uses: actions/setup-python@v5 + with: + python-version: ${{ env.PYTHON_VERSION }} + - run: python -m pip install -r requirements.txt + working-directory: ./wasm/tests + - uses: actions/setup-node@v4 + with: + cache: "npm" + cache-dependency-path: "wasm/demo/package-lock.json" + - name: run test + run: | + export PATH=$PATH:`pwd`/../../geckodriver + npm install + npm run test + env: + NODE_OPTIONS: "--openssl-legacy-provider" + working-directory: ./wasm/demo + - uses: mwilliamson/setup-wabt-action@v3 + with: { wabt-version: "1.0.36" } + - name: check wasm32-unknown without js + run: | + cd wasm/wasm-unknown-test + cargo build --release --verbose + if wasm-objdump -xj Import target/wasm32-unknown-unknown/release/wasm_unknown_test.wasm; then + echo "ERROR: wasm32-unknown module expects imports from the host environment" >2 + fi + - name: build notebook demo + if: github.ref == 'refs/heads/release' + run: | + npm install + npm run dist + mv dist ../demo/dist/notebook + env: + NODE_OPTIONS: "--openssl-legacy-provider" + working-directory: ./wasm/notebook + - name: Deploy demo to Github Pages + if: success() && github.ref == 'refs/heads/release' + uses: peaceiris/actions-gh-pages@v4 + env: + ACTIONS_DEPLOY_KEY: ${{ secrets.ACTIONS_DEMO_DEPLOY_KEY }} + PUBLISH_DIR: ./wasm/demo/dist + EXTERNAL_REPOSITORY: RustPython/demo + PUBLISH_BRANCH: master + + wasm-wasi: + if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip:ci') }} + name: Run snippets and cpython tests on wasm-wasi + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + with: + target: wasm32-wasip1 + + - uses: Swatinem/rust-cache@v2 + - name: Setup Wasmer + uses: wasmerio/setup-wasmer@v3 + - name: Install clang + run: sudo apt-get update && sudo apt-get install clang -y + - name: build rustpython + run: cargo build --release --target wasm32-wasip1 --features freeze-stdlib,stdlib --verbose + - name: run snippets + run: wasmer run --dir `pwd` target/wasm32-wasip1/release/rustpython.wasm -- `pwd`/extra_tests/snippets/stdlib_random.py + - name: run cpython unittest + run: wasmer run --dir `pwd` target/wasm32-wasip1/release/rustpython.wasm -- `pwd`/Lib/test/test_int.py diff --git a/.github/workflows/cron-ci.yaml b/.github/workflows/cron-ci.yaml new file mode 100644 index 0000000000..6389fee1cb --- /dev/null +++ b/.github/workflows/cron-ci.yaml @@ -0,0 +1,154 @@ +on: + schedule: + - cron: '0 0 * * 6' + workflow_dispatch: + push: + paths: + - .github/workflows/cron-ci.yaml + +name: Periodic checks/tasks + +env: + CARGO_ARGS: --no-default-features --features stdlib,importlib,encodings,ssl,jit + PYTHON_VERSION: "3.13.1" + +jobs: + # codecov collects code coverage data from the rust tests, python snippets and python test suite. + # This is done using cargo-llvm-cov, which is a wrapper around llvm-cov. + codecov: + name: Collect code coverage data + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + - uses: taiki-e/install-action@cargo-llvm-cov + - uses: actions/setup-python@v5 + with: + python-version: ${{ env.PYTHON_VERSION }} + - run: sudo apt-get update && sudo apt-get -y install lcov + - name: Run cargo-llvm-cov with Rust tests. + run: cargo llvm-cov --no-report --workspace --exclude rustpython_wasm --verbose --no-default-features --features stdlib,importlib,encodings,ssl,jit + - name: Run cargo-llvm-cov with Python snippets. + run: python scripts/cargo-llvm-cov.py + continue-on-error: true + - name: Run cargo-llvm-cov with Python test suite. + run: cargo llvm-cov --no-report run -- -m test -u all --slowest --fail-env-changed + continue-on-error: true + - name: Prepare code coverage data + run: cargo llvm-cov report --lcov --output-path='codecov.lcov' + - name: Upload to Codecov + uses: codecov/codecov-action@v5 + with: + file: ./codecov.lcov + + testdata: + name: Collect regression test data + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + - name: build rustpython + run: cargo build --release --verbose + - name: collect tests data + run: cargo run --release extra_tests/jsontests.py + env: + RUSTPYTHONPATH: ${{ github.workspace }}/Lib + - name: upload tests data to the website + env: + SSHKEY: ${{ secrets.ACTIONS_TESTS_DATA_DEPLOY_KEY }} + GITHUB_ACTOR: ${{ github.actor }} + run: | + echo "$SSHKEY" >~/github_key + chmod 600 ~/github_key + export GIT_SSH_COMMAND="ssh -i ~/github_key" + + git clone git@github.com:RustPython/rustpython.github.io.git website + cd website + cp ../extra_tests/cpython_tests_results.json ./_data/regrtests_results.json + git add ./_data/regrtests_results.json + if git -c user.name="Github Actions" -c user.email="actions@github.com" commit -m "Update regression test results" --author="$GITHUB_ACTOR"; then + git push + fi + + whatsleft: + name: Collect what is left data + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + - uses: actions/setup-python@v5 + with: + python-version: ${{ env.PYTHON_VERSION }} + - name: build rustpython + run: cargo build --release --verbose + - name: Collect what is left data + run: | + chmod +x ./whats_left.py + ./whats_left.py --features "ssl,sqlite" > whats_left.temp + env: + RUSTPYTHONPATH: ${{ github.workspace }}/Lib + - name: Upload data to the website + env: + SSHKEY: ${{ secrets.ACTIONS_TESTS_DATA_DEPLOY_KEY }} + GITHUB_ACTOR: ${{ github.actor }} + run: | + echo "$SSHKEY" >~/github_key + chmod 600 ~/github_key + export GIT_SSH_COMMAND="ssh -i ~/github_key" + + git clone git@github.com:RustPython/rustpython.github.io.git website + cd website + [ -f ./_data/whats_left.temp ] && cp ./_data/whats_left.temp ./_data/whats_left_lastrun.temp + cp ../whats_left.temp ./_data/whats_left.temp + rm ./_data/whats_left/modules.csv + echo -e "module" > ./_data/whats_left/modules.csv + cat ./_data/whats_left.temp | grep "(entire module)" | cut -d ' ' -f 1 | sort >> ./_data/whats_left/modules.csv + git add -A + if git -c user.name="Github Actions" -c user.email="actions@github.com" commit -m "Update what is left results" --author="$GITHUB_ACTOR"; then + git push + fi + + benchmark: + name: Collect benchmark data + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + - uses: actions/setup-python@v5 + with: + python-version: 3.9 + - run: cargo install cargo-criterion + - name: build benchmarks + run: cargo build --release --benches + - name: collect execution benchmark data + run: cargo criterion --bench execution + - name: collect microbenchmarks data + run: cargo criterion --bench microbenchmarks + - name: restructure generated files + run: | + cd ./target/criterion/reports + find -type d -name cpython | xargs rm -rf + find -type d -name rustpython | xargs rm -rf + find -mindepth 2 -maxdepth 2 -name violin.svg | xargs rm -rf + find -type f -not -name violin.svg | xargs rm -rf + for file in $(find -type f -name violin.svg); do mv $file $(echo $file | sed -E "s_\./([^/]+)/([^/]+)/violin\.svg_./\1/\2.svg_"); done + find -mindepth 2 -maxdepth 2 -type d | xargs rm -rf + cd .. + mv reports/* . + rmdir reports + - name: upload benchmark data to the website + env: + SSHKEY: ${{ secrets.ACTIONS_TESTS_DATA_DEPLOY_KEY }} + run: | + echo "$SSHKEY" >~/github_key + chmod 600 ~/github_key + export GIT_SSH_COMMAND="ssh -i ~/github_key" + + git clone git@github.com:RustPython/rustpython.github.io.git website + cd website + rm -rf ./assets/criterion + cp -r ../target/criterion ./assets/criterion + git add ./assets/criterion + if git -c user.name="Github Actions" -c user.email="actions@github.com" commit -m "Update benchmark results"; then + git push + fi diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml new file mode 100644 index 0000000000..f6a1ad3209 --- /dev/null +++ b/.github/workflows/release.yml @@ -0,0 +1,173 @@ +name: Release + +on: + schedule: + # 9 AM UTC on every Monday + - cron: "0 9 * * Mon" + workflow_dispatch: + inputs: + pre-release: + type: boolean + description: Mark "Pre-Release" + required: false + default: true + +permissions: + contents: write + +env: + CARGO_ARGS: --no-default-features --features stdlib,importlib,encodings,sqlite,ssl + +jobs: + build: + runs-on: ${{ matrix.platform.runner }} + strategy: + matrix: + platform: + - runner: ubuntu-latest + target: x86_64-unknown-linux-gnu +# - runner: ubuntu-latest +# target: i686-unknown-linux-gnu +# - runner: ubuntu-latest +# target: aarch64-unknown-linux-gnu +# - runner: ubuntu-latest +# target: armv7-unknown-linux-gnueabi +# - runner: ubuntu-latest +# target: s390x-unknown-linux-gnu +# - runner: ubuntu-latest +# target: powerpc64le-unknown-linux-gnu + - runner: macos-latest + target: aarch64-apple-darwin +# - runner: macos-latest +# target: x86_64-apple-darwin + - runner: windows-latest + target: x86_64-pc-windows-msvc +# - runner: windows-latest +# target: i686-pc-windows-msvc +# - runner: windows-latest +# target: aarch64-pc-windows-msvc + fail-fast: false + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + - uses: cargo-bins/cargo-binstall@main + + - name: Set up Environment + shell: bash + run: rustup target add ${{ matrix.platform.target }} + - name: Set up Windows Environment + shell: bash + run: | + git config --global core.longpaths true + cargo install --target-dir=target -v cargo-vcpkg + cargo vcpkg -v build + if: runner.os == 'Windows' + - name: Set up MacOS Environment + run: brew install autoconf automake libtool + if: runner.os == 'macOS' + + - name: Build RustPython + run: cargo build --release --target=${{ matrix.platform.target }} --verbose --features=threading ${{ env.CARGO_ARGS }} + if: runner.os == 'macOS' + - name: Build RustPython + run: cargo build --release --target=${{ matrix.platform.target }} --verbose --features=threading ${{ env.CARGO_ARGS }},jit + if: runner.os != 'macOS' + + - name: Rename Binary + run: cp target/${{ matrix.platform.target }}/release/rustpython target/rustpython-release-${{ runner.os }}-${{ matrix.platform.target }} + if: runner.os != 'Windows' + - name: Rename Binary + run: cp target/${{ matrix.platform.target }}/release/rustpython.exe target/rustpython-release-${{ runner.os }}-${{ matrix.platform.target }}.exe + if: runner.os == 'Windows' + + - name: Upload Binary Artifacts + uses: actions/upload-artifact@v4 + with: + name: rustpython-release-${{ runner.os }}-${{ matrix.platform.target }} + path: target/rustpython-release-${{ runner.os }}-${{ matrix.platform.target }}* + + build-wasm: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: dtolnay/rust-toolchain@stable + with: + targets: wasm32-wasip1 + + - name: Build RustPython + run: cargo build --target wasm32-wasip1 --no-default-features --features freeze-stdlib,stdlib --release + + - name: Rename Binary + run: cp target/wasm32-wasip1/release/rustpython.wasm target/rustpython-release-wasm32-wasip1.wasm + + - name: Upload Binary Artifacts + uses: actions/upload-artifact@v4 + with: + name: rustpython-release-wasm32-wasip1 + path: target/rustpython-release-wasm32-wasip1.wasm + + - name: install wasm-pack + run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh + - uses: actions/setup-node@v4 + - uses: mwilliamson/setup-wabt-action@v3 + with: { wabt-version: "1.0.30" } + - name: build demo + run: | + npm install + npm run dist + env: + NODE_OPTIONS: "--openssl-legacy-provider" + working-directory: ./wasm/demo + - name: build notebook demo + run: | + npm install + npm run dist + mv dist ../demo/dist/notebook + env: + NODE_OPTIONS: "--openssl-legacy-provider" + working-directory: ./wasm/notebook + - name: Deploy demo to Github Pages + uses: peaceiris/actions-gh-pages@v4 + with: + deploy_key: ${{ secrets.ACTIONS_DEMO_DEPLOY_KEY }} + publish_dir: ./wasm/demo/dist + external_repository: RustPython/demo + publish_branch: master + + release: + runs-on: ubuntu-latest + needs: [build, build-wasm] + steps: + - name: Download Binary Artifacts + uses: actions/download-artifact@v4 + with: + path: bin + pattern: rustpython-* + merge-multiple: true + + - name: List Binaries + run: | + ls -lah bin/ + file bin/* + - name: Create Release + env: + GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} + tag: ${{ github.ref_name }} + run: ${{ github.run_number }} + run: | + if [[ "${{ github.event.inputs.pre-release }}" == "false" ]]; then + RELEASE_TYPE_NAME=Release + PRERELEASE_ARG= + else + RELEASE_TYPE_NAME=Pre-Release + PRERELEASE_ARG=--prerelease + fi + + today=$(date '+%Y-%m-%d') + gh release create "$today-$tag-$run" \ + --repo="$GITHUB_REPOSITORY" \ + --title="RustPython $RELEASE_TYPE_NAME $today-$tag #$run" \ + --target="$tag" \ + --generate-notes \ + $PRERELEASE_ARG \ + bin/rustpython-release-* diff --git a/.gitignore b/.gitignore index c0bc411bd4..cb7165aaca 100644 --- a/.gitignore +++ b/.gitignore @@ -1,10 +1,23 @@ /target +/*/target **/*.rs.bk **/*.bytecode -__pycache__ +__pycache__/ **/*.pytest_cache .*sw* .repl_history.txt -.vscode +.vscode/ wasm-pack.log .idea/ +.envrc +.python-version + +flame-graph.html +flame.txt +flamescope.json +/wapm.lock +/wapm_packages +/.cargo/config + +extra_tests/snippets/resources +extra_tests/not_impl.py diff --git a/.gitpod.Dockerfile b/.gitpod.Dockerfile new file mode 100644 index 0000000000..0a54e9d39a --- /dev/null +++ b/.gitpod.Dockerfile @@ -0,0 +1,21 @@ +FROM gitpod/workspace-full + +USER gitpod + +# Update Rust to the latest version +RUN rm -rf ~/.rustup && \ + export PATH=$HOME/.cargo/bin:$PATH && \ + rustup update stable && \ + rustup component add rls && \ + # Set up wasm-pack and wasm32-unknown-unknown for rustpython_wasm + curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh && \ + rustup target add wasm32-unknown-unknown + +RUN sudo apt-get -q update \ + && sudo apt-get install -yq \ + libpython3.6 \ + rust-lldb \ + && sudo rm -rf /var/lib/apt/lists/* +ENV RUST_LLDB=/usr/bin/lldb-8 + +USER root diff --git a/.gitpod.yml b/.gitpod.yml new file mode 100644 index 0000000000..7f2eea913f --- /dev/null +++ b/.gitpod.yml @@ -0,0 +1,6 @@ +image: + file: .gitpod.Dockerfile + +vscode: + extensions: + - vadimcn.vscode-lldb@1.5.3:vTh/rWhvJ5nQpeAVsD20QA== \ No newline at end of file diff --git a/.mailmap b/.mailmap new file mode 100644 index 0000000000..b208bf5730 --- /dev/null +++ b/.mailmap @@ -0,0 +1,8 @@ +# +# This list is used by git-shortlog to aggregate contributions. It is +# necessary when either the author's full name is not always written +# the same way, and/or the same author contributes from different +# email addresses. +# + +Noa <33094578+coolreader18@users.noreply.github.com> diff --git a/.theia/launch.json b/.theia/launch.json new file mode 100644 index 0000000000..699c72ee9d --- /dev/null +++ b/.theia/launch.json @@ -0,0 +1,16 @@ +{ + // Use IntelliSense to learn about possible attributes. + // Hover to view descriptions of existing attributes. + "version": "0.2.0", + "configurations": [ + { + "type": "lldb", + "request": "launch", + "name": "Debug Rust Code", + //"preLaunchTask": "cargo", + "program": "${workspaceFolder}/target/debug/rustpython", + "cwd": "${workspaceFolder}", + //"valuesFormatting": "parseText" + } + ] +} diff --git a/.theia/settings.json b/.theia/settings.json new file mode 100644 index 0000000000..83db8fc489 --- /dev/null +++ b/.theia/settings.json @@ -0,0 +1,8 @@ +{ + "cpp.buildConfigurations": [ + { + "name": "", + "directory": "" + }, + ] +} \ No newline at end of file diff --git a/.travis.yml b/.travis.yml deleted file mode 100644 index cbab6ae216..0000000000 --- a/.travis.yml +++ /dev/null @@ -1,145 +0,0 @@ -language: rust - -rust: - - stable - - beta - - nightly - -script: - - cargo build --verbose --all - - cargo test --verbose --all - -env: - # This is used to only capture the regular nightly test in allow_failures - - REGULAR_TEST=true - -cache: cargo - -matrix: - fast_finish: true - include: - # To test the snippets, we use Travis' Python environment (because - # installing rust ourselves is a lot easier than installing Python) - - language: python - python: 3.6 - cache: - pip: true - # Because we're using the Python Travis environment, we can't use - # the built-in cargo cacher - directories: - - /home/travis/.cargo - - target - env: - - TRAVIS_RUST_VERSION=stable - - REGULAR_TEST=false - - CODE_COVERAGE=false - script: tests/.travis-runner.sh - - language: python - python: 3.6 - cache: - pip: true - # Because we're using the Python Travis environment, we can't use - # the built-in cargo cacher - directories: - - /home/travis/.cargo - - target - env: - - TRAVIS_RUST_VERSION=beta - - REGULAR_TEST=false - - CODE_COVERAGE=false - script: tests/.travis-runner.sh - - name: rustfmt - language: rust - rust: stable - cache: cargo - before_script: - - rustup component add rustfmt-preview - script: - # Code references the generated python.rs, so put something in - # place to make `cargo fmt` happy. (We use `echo` rather than - # `touch` because rustfmt complains about the empty file touch - # creates.) - - echo > parser/src/python.rs - - cargo fmt --all -- --check - env: - - REGULAR_TEST=false - - name: publish documentation - language: rust - rust: stable - cache: cargo - script: - - cargo doc --no-deps --all - if: branch = release - env: - - REGULAR_TEST=false - - DEPLOY_DOC=true - - name: WASM online demo - language: rust - rust: nightly - cache: cargo - install: - - nvm install node - # install wasm-pack - - curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh - script: - - cd wasm/demo - - npm install - - npm run dist - if: branch = release - env: - - REGULAR_TEST=false - - DEPLOY_DEMO=true - - name: cargo-clippy - language: rust - rust: stable - cache: cargo - before_script: - - rustup component add clippy - script: - - cargo clippy - env: - - REGULAR_TEST=true - - name: Code Coverage - language: python - python: 3.6 - cache: - pip: true - # Because we're using the Python Travis environment, we can't use - # the built-in cargo cacher - directories: - - /home/travis/.cargo - - target - script: - - tests/.travis-runner.sh - env: - - TRAVIS_RUST_VERSION=nightly - - REGULAR_TEST=false - - CODE_COVERAGE=true - allow_failures: - - rust: nightly - env: REGULAR_TEST=true - - name: cargo-clippy - -deploy: - - provider: pages - repo: RustPython/website - target-branch: master - local-dir: target/doc - skip-cleanup: true - # Set in the settings page of your repository, as a secure variable - github-token: $WEBSITE_GITHUB_TOKEN - keep-history: true - on: - branch: release - condition: $DEPLOY_DOC = true - - provider: pages - repo: RustPython/demo - target-branch: master - local-dir: wasm/demo/dist - skip-cleanup: true - # Set in the settings page of your repository, as a secure variable - github-token: $WEBSITE_GITHUB_TOKEN - keep-history: true - on: - branch: release - condition: $DEPLOY_DEMO = true diff --git a/.vscode/launch.json b/.vscode/launch.json new file mode 100644 index 0000000000..fa6f96c5fd --- /dev/null +++ b/.vscode/launch.json @@ -0,0 +1,298 @@ +{ + // Use IntelliSense to learn about possible attributes. + // Hover to view descriptions of existing attributes. + // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387 + "version": "0.2.0", + "configurations": [ + { + "type": "lldb", + "request": "launch", + "name": "Debug executable 'rustpython'", + "preLaunchTask": "Build RustPython Debug", + "program": "target/debug/rustpython", + "args": [], + "env": { + "RUST_BACKTRACE": "1" + }, + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug executable 'rustpython' without SSL", + "preLaunchTask": "Build RustPython Debug without SSL", + "program": "target/debug/rustpython", + "args": [], + "env": { + "RUST_BACKTRACE": "1" + }, + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython" + ], + "filter": { + "name": "rustpython", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug benchmark 'execution'", + "cargo": { + "args": [ + "test", + "--no-run", + "--bench=execution", + "--package=rustpython" + ], + "filter": { + "name": "execution", + "kind": "bench" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug benchmark 'microbenchmarks'", + "cargo": { + "args": [ + "test", + "--no-run", + "--bench=microbenchmarks", + "--package=rustpython" + ], + "filter": { + "name": "microbenchmarks", + "kind": "bench" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython-pylib'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython-pylib" + ], + "filter": { + "name": "rustpython-pylib", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython-bytecode'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython-bytecode" + ], + "filter": { + "name": "rustpython-bytecode", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython-compiler'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython-compiler" + ], + "filter": { + "name": "rustpython-compiler", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython-compiler-core'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython-compiler-core" + ], + "filter": { + "name": "rustpython-compiler-core", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython-ast'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython-ast" + ], + "filter": { + "name": "rustpython-ast", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython-parser'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython-parser" + ], + "filter": { + "name": "rustpython-parser", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython-vm'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython-vm" + ], + "filter": { + "name": "rustpython-vm", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython-common'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython-common" + ], + "filter": { + "name": "rustpython-common", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython-jit'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython-jit" + ], + "filter": { + "name": "rustpython-jit", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug integration test 'integration'", + "cargo": { + "args": [ + "test", + "--no-run", + "--test=integration", + "--package=rustpython-jit" + ], + "filter": { + "name": "integration", + "kind": "test" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + }, + { + "type": "lldb", + "request": "launch", + "name": "Debug unit tests in library 'rustpython_wasm'", + "cargo": { + "args": [ + "test", + "--no-run", + "--lib", + "--package=rustpython_wasm" + ], + "filter": { + "name": "rustpython_wasm", + "kind": "lib" + } + }, + "args": [], + "cwd": "${workspaceFolder}" + } + ] +} \ No newline at end of file diff --git a/.vscode/tasks.json b/.vscode/tasks.json new file mode 100644 index 0000000000..18a3d6010d --- /dev/null +++ b/.vscode/tasks.json @@ -0,0 +1,36 @@ +{ + "version": "2.0.0", + "tasks": [ + { + "label": "Build RustPython Debug without SSL", + "type": "shell", + "command": "cargo", + "args": [ + "build", + ], + "problemMatcher": [ + "$rustc", + ], + "group": { + "kind": "build", + "isDefault": true, + }, + }, + { + "label": "Build RustPython Debug", + "type": "shell", + "command": "cargo", + "args": [ + "build", + "--features=ssl" + ], + "problemMatcher": [ + "$rustc", + 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"28a6e20d751156648aa063f3800b706ee209a32c0b4d9f24be3d980b01be55ef" +dependencies = [ + "proc-macro2", + "quote", + "syn 2.0.101", +] + +[[package]] +name = "zlib-rs" +version = "0.5.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "868b928d7949e09af2f6086dfc1e01936064cc7a819253bce650d4e2a2d63ba8" diff --git a/Cargo.toml b/Cargo.toml index a1f366cd43..163289e8b2 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -1,20 +1,227 @@ [package] name = "rustpython" -version = "0.0.1" -authors = ["Windel Bouwman", "Shing Lyu "] -edition = "2018" +description = "A python interpreter written in rust." +include = ["LICENSE", "Cargo.toml", "src/**/*.rs"] +version.workspace = true +authors.workspace = true +edition.workspace = true +rust-version.workspace = true +repository.workspace = true +license.workspace = true -[workspace] -members = [".", "vm", "wasm/lib", "parser"] +[features] +default = ["threading", "stdlib", "stdio", "importlib"] +importlib = ["rustpython-vm/importlib"] +encodings = ["rustpython-vm/encodings"] +stdio = ["rustpython-vm/stdio"] +stdlib = ["rustpython-stdlib", "rustpython-pylib", "encodings"] +flame-it = ["rustpython-vm/flame-it", "flame", "flamescope"] +freeze-stdlib = ["stdlib", "rustpython-vm/freeze-stdlib", "rustpython-pylib?/freeze-stdlib"] +jit = ["rustpython-vm/jit"] +threading = ["rustpython-vm/threading", "rustpython-stdlib/threading"] +sqlite = ["rustpython-stdlib/sqlite"] +ssl = ["rustpython-stdlib/ssl"] +ssl-vendor = ["ssl", "rustpython-stdlib/ssl-vendor"] +tkinter = ["rustpython-stdlib/tkinter"] [dependencies] -log="0.4.1" -env_logger="0.5.10" -clap = "2.31.2" -rustpython_parser = {path = "parser"} -rustpython_vm = {path = "vm"} -rustyline = "2.1.0" -xdg = "2.2.0" +rustpython-compiler = { workspace = true } +rustpython-pylib = { workspace = true, optional = true } +rustpython-stdlib = { workspace = true, optional = true, features = ["compiler"] } +rustpython-vm = { workspace = true, features = ["compiler"] } +ruff_python_parser = { workspace = true } + +cfg-if = { workspace = true } +log = { workspace = true } +flame = { workspace = true, optional = true } + +lexopt = "0.3" +dirs = { package = "dirs-next", version = "2.0" } +env_logger = "0.11" +flamescope = { version = "0.1.2", optional = true } + +[target.'cfg(windows)'.dependencies] +libc = { workspace = true } + +[target.'cfg(not(target_arch = "wasm32"))'.dependencies] +rustyline = { workspace = true } + +[dev-dependencies] +criterion = { workspace = true } +pyo3 = { version = "0.24", features = ["auto-initialize"] } + +[[bench]] +name = "execution" +harness = false + +[[bench]] +name = "microbenchmarks" +harness = false + +[[bin]] +name = "rustpython" +path = "src/main.rs" + +[profile.dev.package."*"] +opt-level = 3 + +[profile.test] +opt-level = 3 +# https://github.com/rust-lang/rust/issues/92869 +# lto = "thin" + +[profile.bench] +lto = "thin" +codegen-units = 1 +opt-level = 3 [profile.release] -opt-level = "s" +lto = "thin" + +[patch.crates-io] +radium = { version = "1.1.0", git = "https://github.com/youknowone/ferrilab", branch = "fix-nightly" } +# REDOX START, Uncomment when you want to compile/check with redoxer +# REDOX END + +# Used only on Windows to build the vcpkg dependencies +[package.metadata.vcpkg] +git = "https://github.com/microsoft/vcpkg" +# The revision of the vcpkg repository to use +# https://github.com/microsoft/vcpkg/tags +rev = "2024.02.14" + +[package.metadata.vcpkg.target] +x86_64-pc-windows-msvc = { triplet = "x64-windows-static-md", dev-dependencies = ["openssl" ] } + +[package.metadata.packager] +product-name = "RustPython" +identifier = "com.rustpython.rustpython" +description = "An open source Python 3 interpreter written in Rust" +homepage = "https://rustpython.github.io/" +license_file = "LICENSE" +authors = ["RustPython Team"] +publisher = "RustPython Team" +resources = ["LICENSE", "README.md", "Lib"] +icons = ["32x32.png"] + +[package.metadata.packager.nsis] +installer_mode = "both" +template = "installer-config/installer.nsi" + +[package.metadata.packager.wix] +template = "installer-config/installer.wxs" + + +[workspace] +resolver = "2" +members = [ + "compiler", "compiler/core", "compiler/codegen", "compiler/literal", "compiler/source", + ".", "common", "derive", "jit", "vm", "vm/sre_engine", "pylib", "stdlib", "derive-impl", "wtf8", + "wasm/lib", +] + +[workspace.package] +version = "0.4.0" +authors = ["RustPython Team"] +edition = "2024" +rust-version = "1.85.0" +repository = "https://github.com/RustPython/RustPython" +license = "MIT" + +[workspace.dependencies] +rustpython-compiler-source = { path = "compiler/source" } +rustpython-compiler-core = { path = "compiler/core", version = "0.4.0" } +rustpython-compiler = { path = "compiler", version = "0.4.0" } +rustpython-codegen = { path = "compiler/codegen", version = "0.4.0" } +rustpython-common = { path = "common", version = "0.4.0" } +rustpython-derive = { path = "derive", version = "0.4.0" } +rustpython-derive-impl = { path = "derive-impl", version = "0.4.0" } +rustpython-jit = { path = "jit", version = "0.4.0" } +rustpython-literal = { path = "compiler/literal", version = "0.4.0" } +rustpython-vm = { path = "vm", default-features = false, version = "0.4.0" } +rustpython-pylib = { path = "pylib", version = "0.4.0" } +rustpython-stdlib = { path = "stdlib", default-features = false, version = "0.4.0" } +rustpython-sre_engine = { path = "vm/sre_engine", version = "0.4.0" } +rustpython-wtf8 = { path = "wtf8", version = "0.4.0" } +rustpython-doc = { git = "https://github.com/RustPython/__doc__", tag = "0.3.0", version = "0.3.0" } + +ruff_python_parser = { git = "https://github.com/astral-sh/ruff.git", tag = "0.11.0" } +ruff_python_ast = { git = "https://github.com/astral-sh/ruff.git", tag = "0.11.0" } +ruff_text_size = { git = "https://github.com/astral-sh/ruff.git", tag = "0.11.0" } +ruff_source_file = { git = "https://github.com/astral-sh/ruff.git", tag = "0.11.0" } + +ahash = "0.8.11" +ascii = "1.1" +bitflags = "2.4.2" +bstr = "1" +cfg-if = "1.0" +chrono = "0.4.39" +constant_time_eq = "0.4" +criterion = { version = "0.5", features = ["html_reports"] } +crossbeam-utils = "0.8.21" +flame = "0.2.2" +getrandom = { version = "0.3", features = ["std"] } +glob = "0.3" +hex = "0.4.3" +indexmap = { version = "2.2.6", features = ["std"] } +insta = "1.42" +itertools = "0.14.0" +is-macro = "0.3.7" +junction = "1.2.0" +libc = "0.2.169" +libffi = "4.0" +log = "0.4.27" +nix = { version = "0.29", features = ["fs", "user", "process", "term", "time", "signal", "ioctl", "socket", "sched", "zerocopy", "dir", "hostname", "net", "poll"] } +malachite-bigint = "0.6" +malachite-q = "0.6" +malachite-base = "0.6" +memchr = "2.7.4" +num-complex = "0.4.6" +num-integer = "0.1.46" +num-traits = "0.2" +num_enum = { version = "0.7", default-features = false } +optional = "0.5" +once_cell = "1.20.3" +parking_lot = "0.12.3" +paste = "1.0.15" +proc-macro2 = "1.0.93" +pymath = "0.0.2" +quote = "1.0.38" +radium = "1.1" +rand = "0.9" +rand_core = { version = "0.9", features = ["os_rng"] } +rustix = { version = "1.0", features = ["event"] } +rustyline = "15.0.0" +serde = { version = "1.0.133", default-features = false } +schannel = "0.1.27" +static_assertions = "1.1" +strum = "0.27" +strum_macros = "0.27" +syn = "2" +thiserror = "2.0" +thread_local = "1.1.8" +unicode-casing = "0.1.0" +unic-char-property = "0.9.0" +unic-normal = "0.9.0" +unic-ucd-age = "0.9.0" +unic-ucd-bidi = "0.9.0" +unic-ucd-category = "0.9.0" +unic-ucd-ident = "0.9.0" +unicode_names2 = "1.3.0" +widestring = "1.1.0" +windows-sys = "0.59.0" +wasm-bindgen = "0.2.100" + +# Lints + +[workspace.lints.rust] +unsafe_code = "allow" +unsafe_op_in_unsafe_fn = "deny" +elided_lifetimes_in_paths = "warn" + +[workspace.lints.clippy] +perf = "warn" +style = "warn" +complexity = "warn" +suspicious = "warn" +correctness = "warn" diff --git a/DEVELOPMENT.md b/DEVELOPMENT.md new file mode 100644 index 0000000000..aa7d99eef3 --- /dev/null +++ b/DEVELOPMENT.md @@ -0,0 +1,208 @@ +# RustPython Development Guide and Tips + +RustPython attracts developers with interest and experience in Rust, Python, +or WebAssembly. Whether you are familiar with Rust, Python, or +WebAssembly, the goal of this Development Guide is to give you the basics to +get set up for developing RustPython and contributing to this project. + +The contents of the Development Guide include: + +- [Setting up a development environment](#setting-up-a-development-environment) +- [Code style](#code-style) +- [Testing](#testing) +- [Profiling](#profiling) +- [Code organization](#code-organization) +- [Understanding internals](#understanding-internals) +- [Questions](#questions) + +## Setting up a development environment + +RustPython requires the following: + +- Rust latest stable version (e.g 1.69.0 as of Apr 20 2023) + - To check Rust version: `rustc --version` + - If you have `rustup` on your system, enter to update to the latest + stable version: `rustup update stable` + - If you do not have Rust installed, use [rustup](https://rustup.rs/) to + do so. +- CPython version 3.13 or higher + - CPython can be installed by your operating system's package manager, + from the [Python website](https://www.python.org/downloads/), or + using a third-party distribution, such as + [Anaconda](https://www.anaconda.com/distribution/). +- [macOS] In case of libffi-sys compilation error, make sure autoconf, automake, + libtool are installed + - To install with [Homebrew](https://brew.sh), enter + `brew install autoconf automake libtool` +- [Optional] The Python package, `pytest`, is used for testing Python code + snippets. To install, enter `python3 -m pip install pytest`. + +## Code style + +The Rust code style used is the default +[rustfmt](https://github.com/rust-lang/rustfmt) codestyle. Please format your +code accordingly, or run `cargo fmt` to autoformat it. We also use +[clippy](https://github.com/rust-lang/rust-clippy) to lint Rust code, which +you can check yourself with `cargo clippy`. + +Custom Python code (i.e. code not copied from CPython's standard library) should +follow the [PEP 8](https://www.python.org/dev/peps/pep-0008/) style. We also use +[ruff](https://beta.ruff.rs/docs/) to check Python code style. + +In addition to language specific tools, [cspell](https://github.com/streetsidesoftware/cspell), +a code spell checker, is used in order to ensure correct spellings for code. + +## Testing + +To test RustPython's functionality, a collection of Python snippets is located +in the `extra_tests/snippets` directory and can be run using `pytest`: + +```shell +$ cd extra_tests +$ pytest -v +``` + +Rust unit tests can be run with `cargo`: + +```shell +$ cargo test --workspace --exclude rustpython_wasm +``` + +Python unit tests can be run by compiling RustPython and running the test module: + +```shell +$ cargo run --release -- -m test +``` + +There are a few test options that are especially useful: + +- `-j ` enables parallel testing (which is a lot faster), where `` is the +number of threads to be used, ideally the same as number of cores on your CPU. +If you don't know, `-j 4` or `-j 8` are good options. +- `-v` enables verbose mode, adding additional information about the tests being +run. +- `` specifies a single test to run instead of running all tests. + +For example, to run all tests in parallel: + +```shell +$ cargo run --release -- -m test -j 4 +``` + +To run only `test_cmath` (located at `Lib/test/test_cmath`) verbosely: + +```shell +$ cargo run --release -- -m test test_cmath -v +``` + +## Profiling + +To profile RustPython, build it in `release` mode with the `flame-it` feature. +This will generate a file `flamescope.json`, which can be viewed at +https://speedscope.app. + +```shell +$ cargo run --release --features flame-it script.py +$ cat flamescope.json +{} +``` + +You can specify another file name other than the default by using the +`--output-file` option to specify a file name (or `stdout` if you specify `-`). +The `--output-format` option determines the format of the output file. +The speedscope json format (default), text, or raw html can be passed. There +exists a raw html viewer which is currently broken, and we welcome a PR to fix it. + +## Code organization + +Understanding a new codebase takes time. Here's a brief view of the +repository's structure: + +- `compiler/src`: python compilation to bytecode + - `core/src`: python bytecode representation in rust structures + - `parser/src`: python lexing, parsing and ast +- `derive/src`: Rust language extensions and macros specific to rustpython +- `Lib`: Carefully selected / copied files from CPython sourcecode. This is + the python side of the standard library. + - `test`: CPython test suite +- `vm/src`: python virtual machine + - `builtins`: Builtin functions and types + - `stdlib`: Standard library parts implemented in rust. +- `src`: using the other subcrates to bring rustpython to life. +- `wasm`: Binary crate and resources for WebAssembly build +- `extra_tests`: extra integration test snippets as a supplement to `Lib/test` + +## Understanding Internals + +The RustPython workspace includes the `rustpython` top-level crate. The `Cargo.toml` +file in the root of the repo provide configuration of the crate and the +implementation is found in the `src` directory (specifically, `src/lib.rs`). + +The top-level `rustpython` binary depends on several lower-level crates including: + +- `rustpython-parser` (implementation in `compiler/parser/src`) +- `rustpython-compiler` (implementation in `compiler/src`) +- `rustpython-vm` (implementation in `vm/src`) + +Together, these crates provide the functions of a programming language and +enable a line of code to go through a series of steps: + +- parse the line of source code into tokens +- determine if the tokens are valid syntax +- create an Abstract Syntax Tree (AST) +- compile the AST into bytecode +- execute the bytecode in the virtual machine (VM). + +### rustpython-parser + +This crate contains the lexer and parser to convert a line of code to +an Abstract Syntax Tree (AST): + +- Lexer: `compiler/parser/src/lexer.rs` converts Python source code into tokens +- Parser: `compiler/parser/src/parser.rs` takes the tokens generated by the lexer and parses + the tokens into an AST (Abstract Syntax Tree) where the nodes of the syntax + tree are Rust structs and enums. + - The Parser relies on `LALRPOP`, a Rust parser generator framework. The + LALRPOP definition of Python's grammar is in `compiler/parser/src/python.lalrpop`. + - More information on parsers and a tutorial can be found in the + [LALRPOP book](https://lalrpop.github.io/lalrpop/). +- AST: `compiler/ast/` implements in Rust the Python types and expressions + represented by the AST nodes. + +### rustpython-compiler + +The `rustpython-compiler` crate's purpose is to transform the AST (Abstract Syntax +Tree) to bytecode. The implementation of the compiler is found in the +`compiler/src` directory. The compiler implements Python's symbol table, +ast->bytecode compiler, and bytecode optimizer in Rust. + +Implementation of bytecode structure in Rust is found in the `compiler/core/src` +directory. `compiler/core/src/bytecode.rs` contains the representation of +instructions and operations in Rust. Further information about Python's +bytecode instructions can be found in the +[Python documentation](https://docs.python.org/3/library/dis.html#bytecodes). + +### rustpython-vm + +The `rustpython-vm` crate has the important job of running the virtual machine that +executes Python's instructions. The `vm/src` directory contains code to +implement the read and evaluation loop that fetches and dispatches +instructions. This directory also contains the implementation of the +Python Standard Library modules in Rust (`vm/src/stdlib`). In Python +everything can be represented as an object. The `vm/src/builtins` directory holds +the Rust code used to represent different Python objects and their methods. The +core implementation of what a Python object is can be found in +`vm/src/object/core.rs`. + +### Code generation + +There are some code generations involved in building RustPython: + +- some part of the AST code is generated from `vm/src/stdlib/ast/gen.rs` to `compiler/ast/src/ast_gen.rs`. +- the `__doc__` attributes are generated by the + [__doc__](https://github.com/RustPython/__doc__) project which is then included as the `rustpython-doc` crate. + +## Questions + +Have you tried these steps and have a question, please chat with us on +[Discord](https://discord.gg/vru8NypEhv). diff --git a/Dockerfile.bin b/Dockerfile.bin index 5d48fd8e88..bf0a8ff464 100644 --- a/Dockerfile.bin +++ b/Dockerfile.bin @@ -1,4 +1,4 @@ -FROM rust:1.31-slim +FROM rust:latest as rust WORKDIR /rustpython @@ -6,4 +6,10 @@ COPY . . RUN cargo build --release -CMD [ "/rustpython/target/release/rustpython" ] +FROM debian:stable-slim + +COPY --from=rust /rustpython/target/release/rustpython /usr/bin +COPY --from=rust /rustpython/Lib /usr/lib/rustpython +ENV RUSTPYTHONPATH /usr/lib/rustpython + +ENTRYPOINT [ "rustpython" ] diff --git a/Dockerfile.wasm b/Dockerfile.wasm index 01137b3f97..a2a1b4c8bc 100644 --- a/Dockerfile.wasm +++ b/Dockerfile.wasm @@ -1,19 +1,32 @@ -FROM rust:1.31-slim - -RUN apt-get update && apt-get install curl gnupg -y && \ - curl -o- https://deb.nodesource.com/setup_10.x | bash && \ - apt-get install nodejs -y && \ - curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh && \ - npm i -g serve +FROM rust:slim AS rust WORKDIR /rustpython +USER root +ENV USER root + + +RUN apt-get update && apt-get install curl libssl-dev pkg-config -y && \ + curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh + COPY . . -RUN cd ./wasm/lib/ && \ - cargo build --release && \ - cd ../demo && \ - npm install && \ - npm run dist +RUN cd wasm/lib/ && wasm-pack build --release + + +FROM node:alpine AS node + +WORKDIR /rustpython-demo + +COPY --from=rust /rustpython/wasm/lib/pkg rustpython_wasm + +COPY wasm/demo . + +RUN npm install && npm run dist -- --env.noWasmPack --env.rustpythonPkg=rustpython_wasm + + +FROM nginx:alpine -CMD [ "serve", "/rustpython/wasm/demo/dist" ] \ No newline at end of file +COPY --from=node /rustpython-demo/dist /usr/share/nginx/html +# Add the WASM mime type +RUN echo "types { application/wasm wasm; }" >>/etc/nginx/mime.types diff --git a/LICENSE b/LICENSE index d3a3b7bbb4..e2aa2ed952 100644 --- a/LICENSE +++ b/LICENSE @@ -1,6 +1,6 @@ MIT License -Copyright (c) 2018 Shing Lyu +Copyright (c) 2025 RustPython Team Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal diff --git a/LICENSE-logo b/LICENSE-logo new file mode 100644 index 0000000000..52bd1459bd --- /dev/null +++ b/LICENSE-logo @@ -0,0 +1,395 @@ +Attribution 4.0 International + +======================================================================= + +Creative Commons Corporation ("Creative Commons") is not a law firm and +does not provide legal services or legal advice. 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HISTORY OF THE SOFTWARE +========================== + +Python was created in the early 1990s by Guido van Rossum at Stichting +Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands +as a successor of a language called ABC. Guido remains Python's +principal author, although it includes many contributions from others. + +In 1995, Guido continued his work on Python at the Corporation for +National Research Initiatives (CNRI, see http://www.cnri.reston.va.us) +in Reston, Virginia where he released several versions of the +software. + +In May 2000, Guido and the Python core development team moved to +BeOpen.com to form the BeOpen PythonLabs team. In October of the same +year, the PythonLabs team moved to Digital Creations, which became +Zope Corporation. In 2001, the Python Software Foundation (PSF, see +https://www.python.org/psf/) was formed, a non-profit organization +created specifically to own Python-related Intellectual Property. +Zope Corporation was a sponsoring member of the PSF. + +All Python releases are Open Source (see http://www.opensource.org for +the Open Source Definition). Historically, most, but not all, Python +releases have also been GPL-compatible; the table below summarizes +the various releases. + + Release Derived Year Owner GPL- + from compatible? (1) + + 0.9.0 thru 1.2 1991-1995 CWI yes + 1.3 thru 1.5.2 1.2 1995-1999 CNRI yes + 1.6 1.5.2 2000 CNRI no + 2.0 1.6 2000 BeOpen.com no + 1.6.1 1.6 2001 CNRI yes (2) + 2.1 2.0+1.6.1 2001 PSF no + 2.0.1 2.0+1.6.1 2001 PSF yes + 2.1.1 2.1+2.0.1 2001 PSF yes + 2.1.2 2.1.1 2002 PSF yes + 2.1.3 2.1.2 2002 PSF yes + 2.2 and above 2.1.1 2001-now PSF yes + +Footnotes: + +(1) GPL-compatible doesn't mean that we're distributing Python under + the GPL. All Python licenses, unlike the GPL, let you distribute + a modified version without making your changes open source. The + GPL-compatible licenses make it possible to combine Python with + other software that is released under the GPL; the others don't. + +(2) According to Richard Stallman, 1.6.1 is not GPL-compatible, + because its license has a choice of law clause. According to + CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1 + is "not incompatible" with the GPL. + +Thanks to the many outside volunteers who have worked under Guido's +direction to make these releases possible. + + +B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON +=============================================================== + +PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2 +-------------------------------------------- + +1. 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All rights reserved. + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of Stichting Mathematisch +Centrum or CWI not be used in advertising or publicity pertaining to +distribution of the software without specific, written prior +permission. + +STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO +THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND +FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE +FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT +OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. diff --git a/Lib/README.md b/Lib/README.md new file mode 100644 index 0000000000..535d8939e8 --- /dev/null +++ b/Lib/README.md @@ -0,0 +1,13 @@ +# Standard Library for RustPython + +This directory contains all of the Python files that make up the standard +library for RustPython. + +Most of these files are copied over from the CPython repository (the 3.7 +branch), with slight modifications to allow them to work under RustPython. The +current goal is to complete the standard library with as few modifications as +possible. Current modifications are just temporary workarounds for bugs/missing +feature within the RustPython implementation. + +The first big module we are targeting is `unittest`, so we can leverage the +CPython test suite. diff --git a/Lib/__future__.py b/Lib/__future__.py new file mode 100644 index 0000000000..39720a5e41 --- /dev/null +++ b/Lib/__future__.py @@ -0,0 +1,147 @@ +"""Record of phased-in incompatible language changes. + +Each line is of the form: + + FeatureName = "_Feature(" OptionalRelease "," MandatoryRelease "," + CompilerFlag ")" + +where, normally, OptionalRelease < MandatoryRelease, and both are 5-tuples +of the same form as sys.version_info: + + (PY_MAJOR_VERSION, # the 2 in 2.1.0a3; an int + PY_MINOR_VERSION, # the 1; an int + PY_MICRO_VERSION, # the 0; an int + PY_RELEASE_LEVEL, # "alpha", "beta", "candidate" or "final"; string + PY_RELEASE_SERIAL # the 3; an int + ) + +OptionalRelease records the first release in which + + from __future__ import FeatureName + +was accepted. + +In the case of MandatoryReleases that have not yet occurred, +MandatoryRelease predicts the release in which the feature will become part +of the language. + +Else MandatoryRelease records when the feature became part of the language; +in releases at or after that, modules no longer need + + from __future__ import FeatureName + +to use the feature in question, but may continue to use such imports. + +MandatoryRelease may also be None, meaning that a planned feature got +dropped or that the release version is undetermined. + +Instances of class _Feature have two corresponding methods, +.getOptionalRelease() and .getMandatoryRelease(). + +CompilerFlag is the (bitfield) flag that should be passed in the fourth +argument to the builtin function compile() to enable the feature in +dynamically compiled code. This flag is stored in the .compiler_flag +attribute on _Future instances. These values must match the appropriate +#defines of CO_xxx flags in Include/cpython/compile.h. + +No feature line is ever to be deleted from this file. +""" + +all_feature_names = [ + "nested_scopes", + "generators", + "division", + "absolute_import", + "with_statement", + "print_function", + "unicode_literals", + "barry_as_FLUFL", + "generator_stop", + "annotations", +] + +__all__ = ["all_feature_names"] + all_feature_names + +# The CO_xxx symbols are defined here under the same names defined in +# code.h and used by compile.h, so that an editor search will find them here. +# However, they're not exported in __all__, because they don't really belong to +# this module. +CO_NESTED = 0x0010 # nested_scopes +CO_GENERATOR_ALLOWED = 0 # generators (obsolete, was 0x1000) +CO_FUTURE_DIVISION = 0x20000 # division +CO_FUTURE_ABSOLUTE_IMPORT = 0x40000 # perform absolute imports by default +CO_FUTURE_WITH_STATEMENT = 0x80000 # with statement +CO_FUTURE_PRINT_FUNCTION = 0x100000 # print function +CO_FUTURE_UNICODE_LITERALS = 0x200000 # unicode string literals +CO_FUTURE_BARRY_AS_BDFL = 0x400000 +CO_FUTURE_GENERATOR_STOP = 0x800000 # StopIteration becomes RuntimeError in generators +CO_FUTURE_ANNOTATIONS = 0x1000000 # annotations become strings at runtime + + +class _Feature: + + def __init__(self, optionalRelease, mandatoryRelease, compiler_flag): + self.optional = optionalRelease + self.mandatory = mandatoryRelease + self.compiler_flag = compiler_flag + + def getOptionalRelease(self): + """Return first release in which this feature was recognized. + + This is a 5-tuple, of the same form as sys.version_info. + """ + return self.optional + + def getMandatoryRelease(self): + """Return release in which this feature will become mandatory. + + This is a 5-tuple, of the same form as sys.version_info, or, if + the feature was dropped, or the release date is undetermined, is None. + """ + return self.mandatory + + def __repr__(self): + return "_Feature" + repr((self.optional, + self.mandatory, + self.compiler_flag)) + + +nested_scopes = _Feature((2, 1, 0, "beta", 1), + (2, 2, 0, "alpha", 0), + CO_NESTED) + +generators = _Feature((2, 2, 0, "alpha", 1), + (2, 3, 0, "final", 0), + CO_GENERATOR_ALLOWED) + +division = _Feature((2, 2, 0, "alpha", 2), + (3, 0, 0, "alpha", 0), + CO_FUTURE_DIVISION) + +absolute_import = _Feature((2, 5, 0, "alpha", 1), + (3, 0, 0, "alpha", 0), + CO_FUTURE_ABSOLUTE_IMPORT) + +with_statement = _Feature((2, 5, 0, "alpha", 1), + (2, 6, 0, "alpha", 0), + CO_FUTURE_WITH_STATEMENT) + +print_function = _Feature((2, 6, 0, "alpha", 2), + (3, 0, 0, "alpha", 0), + CO_FUTURE_PRINT_FUNCTION) + +unicode_literals = _Feature((2, 6, 0, "alpha", 2), + (3, 0, 0, "alpha", 0), + CO_FUTURE_UNICODE_LITERALS) + +barry_as_FLUFL = _Feature((3, 1, 0, "alpha", 2), + (4, 0, 0, "alpha", 0), + CO_FUTURE_BARRY_AS_BDFL) + +generator_stop = _Feature((3, 5, 0, "beta", 1), + (3, 7, 0, "alpha", 0), + CO_FUTURE_GENERATOR_STOP) + +annotations = _Feature((3, 7, 0, "beta", 1), + None, + CO_FUTURE_ANNOTATIONS) diff --git a/Lib/__hello__.py b/Lib/__hello__.py new file mode 100644 index 0000000000..c09d6a4f52 --- /dev/null +++ b/Lib/__hello__.py @@ -0,0 +1,16 @@ +initialized = True + +class TestFrozenUtf8_1: + """\u00b6""" + +class TestFrozenUtf8_2: + """\u03c0""" + +class TestFrozenUtf8_4: + """\U0001f600""" + +def main(): + print("Hello world!") + +if __name__ == '__main__': + main() diff --git a/Lib/__phello__/__init__.py b/Lib/__phello__/__init__.py new file mode 100644 index 0000000000..d37bd2766a --- /dev/null +++ b/Lib/__phello__/__init__.py @@ -0,0 +1,7 @@ +initialized = True + +def main(): + print("Hello world!") + +if __name__ == '__main__': + main() diff --git a/Lib/__phello__/ham/__init__.py b/Lib/__phello__/ham/__init__.py new file mode 100644 index 0000000000..e69de29bb2 diff --git a/Lib/__phello__/ham/eggs.py b/Lib/__phello__/ham/eggs.py new file mode 100644 index 0000000000..e69de29bb2 diff --git a/Lib/__phello__/spam.py b/Lib/__phello__/spam.py new file mode 100644 index 0000000000..d37bd2766a --- /dev/null +++ b/Lib/__phello__/spam.py @@ -0,0 +1,7 @@ +initialized = True + +def main(): + print("Hello world!") + +if __name__ == '__main__': + main() diff --git a/Lib/_aix_support.py b/Lib/_aix_support.py new file mode 100644 index 0000000000..dadc75c2bf --- /dev/null +++ b/Lib/_aix_support.py @@ -0,0 +1,108 @@ +"""Shared AIX support functions.""" + +import sys +import sysconfig + + +# Taken from _osx_support _read_output function +def _read_cmd_output(commandstring, capture_stderr=False): + """Output from successful command execution or None""" + # Similar to os.popen(commandstring, "r").read(), + # but without actually using os.popen because that + # function is not usable during python bootstrap. + import os + import contextlib + fp = open("/tmp/_aix_support.%s"%( + os.getpid(),), "w+b") + + with contextlib.closing(fp) as fp: + if capture_stderr: + cmd = "%s >'%s' 2>&1" % (commandstring, fp.name) + else: + cmd = "%s 2>/dev/null >'%s'" % (commandstring, fp.name) + return fp.read() if not os.system(cmd) else None + + +def _aix_tag(vrtl, bd): + # type: (List[int], int) -> str + # Infer the ABI bitwidth from maxsize (assuming 64 bit as the default) + _sz = 32 if sys.maxsize == (2**31-1) else 64 + _bd = bd if bd != 0 else 9988 + # vrtl[version, release, technology_level] + return "aix-{:1x}{:1d}{:02d}-{:04d}-{}".format(vrtl[0], vrtl[1], vrtl[2], _bd, _sz) + + +# extract version, release and technology level from a VRMF string +def _aix_vrtl(vrmf): + # type: (str) -> List[int] + v, r, tl = vrmf.split(".")[:3] + return [int(v[-1]), int(r), int(tl)] + + +def _aix_bos_rte(): + # type: () -> Tuple[str, int] + """ + Return a Tuple[str, int] e.g., ['7.1.4.34', 1806] + The fileset bos.rte represents the current AIX run-time level. It's VRMF and + builddate reflect the current ABI levels of the runtime environment. + If no builddate is found give a value that will satisfy pep425 related queries + """ + # All AIX systems to have lslpp installed in this location + # subprocess may not be available during python bootstrap + try: + import subprocess + out = subprocess.check_output(["/usr/bin/lslpp", "-Lqc", "bos.rte"]) + except ImportError: + out = _read_cmd_output("/usr/bin/lslpp -Lqc bos.rte") + out = out.decode("utf-8") + out = out.strip().split(":") # type: ignore + _bd = int(out[-1]) if out[-1] != '' else 9988 + return (str(out[2]), _bd) + + +def aix_platform(): + # type: () -> str + """ + AIX filesets are identified by four decimal values: V.R.M.F. + V (version) and R (release) can be retrieved using ``uname`` + Since 2007, starting with AIX 5.3 TL7, the M value has been + included with the fileset bos.rte and represents the Technology + Level (TL) of AIX. The F (Fix) value also increases, but is not + relevant for comparing releases and binary compatibility. + For binary compatibility the so-called builddate is needed. + Again, the builddate of an AIX release is associated with bos.rte. + AIX ABI compatibility is described as guaranteed at: https://www.ibm.com/\ + support/knowledgecenter/en/ssw_aix_72/install/binary_compatability.html + + For pep425 purposes the AIX platform tag becomes: + "aix-{:1x}{:1d}{:02d}-{:04d}-{}".format(v, r, tl, builddate, bitsize) + e.g., "aix-6107-1415-32" for AIX 6.1 TL7 bd 1415, 32-bit + and, "aix-6107-1415-64" for AIX 6.1 TL7 bd 1415, 64-bit + """ + vrmf, bd = _aix_bos_rte() + return _aix_tag(_aix_vrtl(vrmf), bd) + + +# extract vrtl from the BUILD_GNU_TYPE as an int +def _aix_bgt(): + # type: () -> List[int] + gnu_type = sysconfig.get_config_var("BUILD_GNU_TYPE") + if not gnu_type: + raise ValueError("BUILD_GNU_TYPE is not defined") + return _aix_vrtl(vrmf=gnu_type) + + +def aix_buildtag(): + # type: () -> str + """ + Return the platform_tag of the system Python was built on. + """ + # AIX_BUILDDATE is defined by configure with: + # lslpp -Lcq bos.rte | awk -F: '{ print $NF }' + build_date = sysconfig.get_config_var("AIX_BUILDDATE") + try: + build_date = int(build_date) + except (ValueError, TypeError): + raise ValueError(f"AIX_BUILDDATE is not defined or invalid: " + f"{build_date!r}") + return _aix_tag(_aix_bgt(), build_date) diff --git a/Lib/_android_support.py b/Lib/_android_support.py new file mode 100644 index 0000000000..ae506f6a4b --- /dev/null +++ b/Lib/_android_support.py @@ -0,0 +1,181 @@ +import io +import sys +from threading import RLock +from time import sleep, time + +# The maximum length of a log message in bytes, including the level marker and +# tag, is defined as LOGGER_ENTRY_MAX_PAYLOAD at +# https://cs.android.com/android/platform/superproject/+/android-14.0.0_r1:system/logging/liblog/include/log/log.h;l=71. +# Messages longer than this will be truncated by logcat. This limit has already +# been reduced at least once in the history of Android (from 4076 to 4068 between +# API level 23 and 26), so leave some headroom. +MAX_BYTES_PER_WRITE = 4000 + +# UTF-8 uses a maximum of 4 bytes per character, so limiting text writes to this +# size ensures that we can always avoid exceeding MAX_BYTES_PER_WRITE. +# However, if the actual number of bytes per character is smaller than that, +# then we may still join multiple consecutive text writes into binary +# writes containing a larger number of characters. +MAX_CHARS_PER_WRITE = MAX_BYTES_PER_WRITE // 4 + + +# When embedded in an app on current versions of Android, there's no easy way to +# monitor the C-level stdout and stderr. The testbed comes with a .c file to +# redirect them to the system log using a pipe, but that wouldn't be convenient +# or appropriate for all apps. So we redirect at the Python level instead. +def init_streams(android_log_write, stdout_prio, stderr_prio): + if sys.executable: + return # Not embedded in an app. + + global logcat + logcat = Logcat(android_log_write) + + sys.stdout = TextLogStream( + stdout_prio, "python.stdout", sys.stdout.fileno()) + sys.stderr = TextLogStream( + stderr_prio, "python.stderr", sys.stderr.fileno()) + + +class TextLogStream(io.TextIOWrapper): + def __init__(self, prio, tag, fileno=None, **kwargs): + # The default is surrogateescape for stdout and backslashreplace for + # stderr, but in the context of an Android log, readability is more + # important than reversibility. + kwargs.setdefault("encoding", "UTF-8") + kwargs.setdefault("errors", "backslashreplace") + + super().__init__(BinaryLogStream(prio, tag, fileno), **kwargs) + self._lock = RLock() + self._pending_bytes = [] + self._pending_bytes_count = 0 + + def __repr__(self): + return f"" + + def write(self, s): + if not isinstance(s, str): + raise TypeError( + f"write() argument must be str, not {type(s).__name__}") + + # In case `s` is a str subclass that writes itself to stdout or stderr + # when we call its methods, convert it to an actual str. + s = str.__str__(s) + + # We want to emit one log message per line wherever possible, so split + # the string into lines first. Note that "".splitlines() == [], so + # nothing will be logged for an empty string. + with self._lock: + for line in s.splitlines(keepends=True): + while line: + chunk = line[:MAX_CHARS_PER_WRITE] + line = line[MAX_CHARS_PER_WRITE:] + self._write_chunk(chunk) + + return len(s) + + # The size and behavior of TextIOWrapper's buffer is not part of its public + # API, so we handle buffering ourselves to avoid truncation. + def _write_chunk(self, s): + b = s.encode(self.encoding, self.errors) + if self._pending_bytes_count + len(b) > MAX_BYTES_PER_WRITE: + self.flush() + + self._pending_bytes.append(b) + self._pending_bytes_count += len(b) + if ( + self.write_through + or b.endswith(b"\n") + or self._pending_bytes_count > MAX_BYTES_PER_WRITE + ): + self.flush() + + def flush(self): + with self._lock: + self.buffer.write(b"".join(self._pending_bytes)) + self._pending_bytes.clear() + self._pending_bytes_count = 0 + + # Since this is a line-based logging system, line buffering cannot be turned + # off, i.e. a newline always causes a flush. + @property + def line_buffering(self): + return True + + +class BinaryLogStream(io.RawIOBase): + def __init__(self, prio, tag, fileno=None): + self.prio = prio + self.tag = tag + self._fileno = fileno + + def __repr__(self): + return f"" + + def writable(self): + return True + + def write(self, b): + if type(b) is not bytes: + try: + b = bytes(memoryview(b)) + except TypeError: + raise TypeError( + f"write() argument must be bytes-like, not {type(b).__name__}" + ) from None + + # Writing an empty string to the stream should have no effect. + if b: + logcat.write(self.prio, self.tag, b) + return len(b) + + # This is needed by the test suite --timeout option, which uses faulthandler. + def fileno(self): + if self._fileno is None: + raise io.UnsupportedOperation("fileno") + return self._fileno + + +# When a large volume of data is written to logcat at once, e.g. when a test +# module fails in --verbose3 mode, there's a risk of overflowing logcat's own +# buffer and losing messages. We avoid this by imposing a rate limit using the +# token bucket algorithm, based on a conservative estimate of how fast `adb +# logcat` can consume data. +MAX_BYTES_PER_SECOND = 1024 * 1024 + +# The logcat buffer size of a device can be determined by running `logcat -g`. +# We set the token bucket size to half of the buffer size of our current minimum +# API level, because other things on the system will be producing messages as +# well. +BUCKET_SIZE = 128 * 1024 + +# https://cs.android.com/android/platform/superproject/+/android-14.0.0_r1:system/logging/liblog/include/log/log_read.h;l=39 +PER_MESSAGE_OVERHEAD = 28 + + +class Logcat: + def __init__(self, android_log_write): + self.android_log_write = android_log_write + self._lock = RLock() + self._bucket_level = 0 + self._prev_write_time = time() + + def write(self, prio, tag, message): + # Encode null bytes using "modified UTF-8" to avoid them truncating the + # message. + message = message.replace(b"\x00", b"\xc0\x80") + + with self._lock: + now = time() + self._bucket_level += ( + (now - self._prev_write_time) * MAX_BYTES_PER_SECOND) + + # If the bucket level is still below zero, the clock must have gone + # backwards, so reset it to zero and continue. + self._bucket_level = max(0, min(self._bucket_level, BUCKET_SIZE)) + self._prev_write_time = now + + self._bucket_level -= PER_MESSAGE_OVERHEAD + len(tag) + len(message) + if self._bucket_level < 0: + sleep(-self._bucket_level / MAX_BYTES_PER_SECOND) + + self.android_log_write(prio, tag, message) diff --git a/Lib/_apple_support.py b/Lib/_apple_support.py new file mode 100644 index 0000000000..92febdcf58 --- /dev/null +++ b/Lib/_apple_support.py @@ -0,0 +1,66 @@ +import io +import sys + + +def init_streams(log_write, stdout_level, stderr_level): + # Redirect stdout and stderr to the Apple system log. This method is + # invoked by init_apple_streams() (initconfig.c) if config->use_system_logger + # is enabled. + sys.stdout = SystemLog(log_write, stdout_level, errors=sys.stderr.errors) + sys.stderr = SystemLog(log_write, stderr_level, errors=sys.stderr.errors) + + +class SystemLog(io.TextIOWrapper): + def __init__(self, log_write, level, **kwargs): + kwargs.setdefault("encoding", "UTF-8") + kwargs.setdefault("line_buffering", True) + super().__init__(LogStream(log_write, level), **kwargs) + + def __repr__(self): + return f"" + + def write(self, s): + if not isinstance(s, str): + raise TypeError( + f"write() argument must be str, not {type(s).__name__}") + + # In case `s` is a str subclass that writes itself to stdout or stderr + # when we call its methods, convert it to an actual str. + s = str.__str__(s) + + # We want to emit one log message per line, so split + # the string before sending it to the superclass. + for line in s.splitlines(keepends=True): + super().write(line) + + return len(s) + + +class LogStream(io.RawIOBase): + def __init__(self, log_write, level): + self.log_write = log_write + self.level = level + + def __repr__(self): + return f"" + + def writable(self): + return True + + def write(self, b): + if type(b) is not bytes: + try: + b = bytes(memoryview(b)) + except TypeError: + raise TypeError( + f"write() argument must be bytes-like, not {type(b).__name__}" + ) from None + + # Writing an empty string to the stream should have no effect. + if b: + # Encode null bytes using "modified UTF-8" to avoid truncating the + # message. This should not affect the return value, as the caller + # may be expecting it to match the length of the input. + self.log_write(self.level, b.replace(b"\x00", b"\xc0\x80")) + + return len(b) diff --git a/Lib/_collections_abc.py b/Lib/_collections_abc.py new file mode 100644 index 0000000000..601107d2d8 --- /dev/null +++ b/Lib/_collections_abc.py @@ -0,0 +1,1173 @@ +# Copyright 2007 Google, Inc. All Rights Reserved. +# Licensed to PSF under a Contributor Agreement. + +"""Abstract Base Classes (ABCs) for collections, according to PEP 3119. + +Unit tests are in test_collections. +""" + +############ Maintenance notes ######################################### +# +# ABCs are different from other standard library modules in that they +# specify compliance tests. In general, once an ABC has been published, +# new methods (either abstract or concrete) cannot be added. +# +# Though classes that inherit from an ABC would automatically receive a +# new mixin method, registered classes would become non-compliant and +# violate the contract promised by ``isinstance(someobj, SomeABC)``. +# +# Though irritating, the correct procedure for adding new abstract or +# mixin methods is to create a new ABC as a subclass of the previous +# ABC. For example, union(), intersection(), and difference() cannot +# be added to Set but could go into a new ABC that extends Set. +# +# Because they are so hard to change, new ABCs should have their APIs +# carefully thought through prior to publication. +# +# Since ABCMeta only checks for the presence of methods, it is possible +# to alter the signature of a method by adding optional arguments +# or changing parameters names. This is still a bit dubious but at +# least it won't cause isinstance() to return an incorrect result. +# +# +####################################################################### + +from abc import ABCMeta, abstractmethod +import sys + +GenericAlias = type(list[int]) +EllipsisType = type(...) +def _f(): pass +FunctionType = type(_f) +del _f + +__all__ = ["Awaitable", "Coroutine", + "AsyncIterable", "AsyncIterator", "AsyncGenerator", + "Hashable", "Iterable", "Iterator", "Generator", "Reversible", + "Sized", "Container", "Callable", "Collection", + "Set", "MutableSet", + "Mapping", "MutableMapping", + "MappingView", "KeysView", "ItemsView", "ValuesView", + "Sequence", "MutableSequence", + "ByteString", "Buffer", + ] + +# This module has been renamed from collections.abc to _collections_abc to +# speed up interpreter startup. Some of the types such as MutableMapping are +# required early but collections module imports a lot of other modules. +# See issue #19218 +__name__ = "collections.abc" + +# Private list of types that we want to register with the various ABCs +# so that they will pass tests like: +# it = iter(somebytearray) +# assert isinstance(it, Iterable) +# Note: in other implementations, these types might not be distinct +# and they may have their own implementation specific types that +# are not included on this list. +bytes_iterator = type(iter(b'')) +bytearray_iterator = type(iter(bytearray())) +#callable_iterator = ??? +dict_keyiterator = type(iter({}.keys())) +dict_valueiterator = type(iter({}.values())) +dict_itemiterator = type(iter({}.items())) +list_iterator = type(iter([])) +list_reverseiterator = type(iter(reversed([]))) +range_iterator = type(iter(range(0))) +longrange_iterator = type(iter(range(1 << 1000))) +set_iterator = type(iter(set())) +str_iterator = type(iter("")) +tuple_iterator = type(iter(())) +zip_iterator = type(iter(zip())) +## views ## +dict_keys = type({}.keys()) +dict_values = type({}.values()) +dict_items = type({}.items()) +## misc ## +mappingproxy = type(type.__dict__) +generator = type((lambda: (yield))()) +## coroutine ## +async def _coro(): pass +_coro = _coro() +coroutine = type(_coro) +_coro.close() # Prevent ResourceWarning +del _coro +## asynchronous generator ## +async def _ag(): yield +_ag = _ag() +async_generator = type(_ag) +del _ag + + +### ONE-TRICK PONIES ### + +def _check_methods(C, *methods): + mro = C.__mro__ + for method in methods: + for B in mro: + if method in B.__dict__: + if B.__dict__[method] is None: + return NotImplemented + break + else: + return NotImplemented + return True + +class Hashable(metaclass=ABCMeta): + + __slots__ = () + + @abstractmethod + def __hash__(self): + return 0 + + @classmethod + def __subclasshook__(cls, C): + if cls is Hashable: + return _check_methods(C, "__hash__") + return NotImplemented + + +class Awaitable(metaclass=ABCMeta): + + __slots__ = () + + @abstractmethod + def __await__(self): + yield + + @classmethod + def __subclasshook__(cls, C): + if cls is Awaitable: + return _check_methods(C, "__await__") + return NotImplemented + + __class_getitem__ = classmethod(GenericAlias) + + +class Coroutine(Awaitable): + + __slots__ = () + + @abstractmethod + def send(self, value): + """Send a value into the coroutine. + Return next yielded value or raise StopIteration. + """ + raise StopIteration + + @abstractmethod + def throw(self, typ, val=None, tb=None): + """Raise an exception in the coroutine. + Return next yielded value or raise StopIteration. + """ + if val is None: + if tb is None: + raise typ + val = typ() + if tb is not None: + val = val.with_traceback(tb) + raise val + + def close(self): + """Raise GeneratorExit inside coroutine. + """ + try: + self.throw(GeneratorExit) + except (GeneratorExit, StopIteration): + pass + else: + raise RuntimeError("coroutine ignored GeneratorExit") + + @classmethod + def __subclasshook__(cls, C): + if cls is Coroutine: + return _check_methods(C, '__await__', 'send', 'throw', 'close') + return NotImplemented + + +Coroutine.register(coroutine) + + +class AsyncIterable(metaclass=ABCMeta): + + __slots__ = () + + @abstractmethod + def __aiter__(self): + return AsyncIterator() + + @classmethod + def __subclasshook__(cls, C): + if cls is AsyncIterable: + return _check_methods(C, "__aiter__") + return NotImplemented + + __class_getitem__ = classmethod(GenericAlias) + + +class AsyncIterator(AsyncIterable): + + __slots__ = () + + @abstractmethod + async def __anext__(self): + """Return the next item or raise StopAsyncIteration when exhausted.""" + raise StopAsyncIteration + + def __aiter__(self): + return self + + @classmethod + def __subclasshook__(cls, C): + if cls is AsyncIterator: + return _check_methods(C, "__anext__", "__aiter__") + return NotImplemented + + +class AsyncGenerator(AsyncIterator): + + __slots__ = () + + async def __anext__(self): + """Return the next item from the asynchronous generator. + When exhausted, raise StopAsyncIteration. + """ + return await self.asend(None) + + @abstractmethod + async def asend(self, value): + """Send a value into the asynchronous generator. + Return next yielded value or raise StopAsyncIteration. + """ + raise StopAsyncIteration + + @abstractmethod + async def athrow(self, typ, val=None, tb=None): + """Raise an exception in the asynchronous generator. + Return next yielded value or raise StopAsyncIteration. + """ + if val is None: + if tb is None: + raise typ + val = typ() + if tb is not None: + val = val.with_traceback(tb) + raise val + + async def aclose(self): + """Raise GeneratorExit inside coroutine. + """ + try: + await self.athrow(GeneratorExit) + except (GeneratorExit, StopAsyncIteration): + pass + else: + raise RuntimeError("asynchronous generator ignored GeneratorExit") + + @classmethod + def __subclasshook__(cls, C): + if cls is AsyncGenerator: + return _check_methods(C, '__aiter__', '__anext__', + 'asend', 'athrow', 'aclose') + return NotImplemented + + +AsyncGenerator.register(async_generator) + + +class Iterable(metaclass=ABCMeta): + + __slots__ = () + + @abstractmethod + def __iter__(self): + while False: + yield None + + @classmethod + def __subclasshook__(cls, C): + if cls is Iterable: + return _check_methods(C, "__iter__") + return NotImplemented + + __class_getitem__ = classmethod(GenericAlias) + + +class Iterator(Iterable): + + __slots__ = () + + @abstractmethod + def __next__(self): + 'Return the next item from the iterator. When exhausted, raise StopIteration' + raise StopIteration + + def __iter__(self): + return self + + @classmethod + def __subclasshook__(cls, C): + if cls is Iterator: + return _check_methods(C, '__iter__', '__next__') + return NotImplemented + + +Iterator.register(bytes_iterator) +Iterator.register(bytearray_iterator) +#Iterator.register(callable_iterator) +Iterator.register(dict_keyiterator) +Iterator.register(dict_valueiterator) +Iterator.register(dict_itemiterator) +Iterator.register(list_iterator) +Iterator.register(list_reverseiterator) +Iterator.register(range_iterator) +Iterator.register(longrange_iterator) +Iterator.register(set_iterator) +Iterator.register(str_iterator) +Iterator.register(tuple_iterator) +Iterator.register(zip_iterator) + + +class Reversible(Iterable): + + __slots__ = () + + @abstractmethod + def __reversed__(self): + while False: + yield None + + @classmethod + def __subclasshook__(cls, C): + if cls is Reversible: + return _check_methods(C, "__reversed__", "__iter__") + return NotImplemented + + +class Generator(Iterator): + + __slots__ = () + + def __next__(self): + """Return the next item from the generator. + When exhausted, raise StopIteration. + """ + return self.send(None) + + @abstractmethod + def send(self, value): + """Send a value into the generator. + Return next yielded value or raise StopIteration. + """ + raise StopIteration + + @abstractmethod + def throw(self, typ, val=None, tb=None): + """Raise an exception in the generator. + Return next yielded value or raise StopIteration. + """ + if val is None: + if tb is None: + raise typ + val = typ() + if tb is not None: + val = val.with_traceback(tb) + raise val + + def close(self): + """Raise GeneratorExit inside generator. + """ + try: + self.throw(GeneratorExit) + except (GeneratorExit, StopIteration): + pass + else: + raise RuntimeError("generator ignored GeneratorExit") + + @classmethod + def __subclasshook__(cls, C): + if cls is Generator: + return _check_methods(C, '__iter__', '__next__', + 'send', 'throw', 'close') + return NotImplemented + + +Generator.register(generator) + + +class Sized(metaclass=ABCMeta): + + __slots__ = () + + @abstractmethod + def __len__(self): + return 0 + + @classmethod + def __subclasshook__(cls, C): + if cls is Sized: + return _check_methods(C, "__len__") + return NotImplemented + + +class Container(metaclass=ABCMeta): + + __slots__ = () + + @abstractmethod + def __contains__(self, x): + return False + + @classmethod + def __subclasshook__(cls, C): + if cls is Container: + return _check_methods(C, "__contains__") + return NotImplemented + + __class_getitem__ = classmethod(GenericAlias) + + +class Collection(Sized, Iterable, Container): + + __slots__ = () + + @classmethod + def __subclasshook__(cls, C): + if cls is Collection: + return _check_methods(C, "__len__", "__iter__", "__contains__") + return NotImplemented + + +class Buffer(metaclass=ABCMeta): + + __slots__ = () + + @abstractmethod + def __buffer__(self, flags: int, /) -> memoryview: + raise NotImplementedError + + @classmethod + def __subclasshook__(cls, C): + if cls is Buffer: + return _check_methods(C, "__buffer__") + return NotImplemented + + +class _CallableGenericAlias(GenericAlias): + """ Represent `Callable[argtypes, resulttype]`. + + This sets ``__args__`` to a tuple containing the flattened ``argtypes`` + followed by ``resulttype``. + + Example: ``Callable[[int, str], float]`` sets ``__args__`` to + ``(int, str, float)``. + """ + + __slots__ = () + + def __new__(cls, origin, args): + if not (isinstance(args, tuple) and len(args) == 2): + raise TypeError( + "Callable must be used as Callable[[arg, ...], result].") + t_args, t_result = args + if isinstance(t_args, (tuple, list)): + args = (*t_args, t_result) + elif not _is_param_expr(t_args): + raise TypeError(f"Expected a list of types, an ellipsis, " + f"ParamSpec, or Concatenate. Got {t_args}") + return super().__new__(cls, origin, args) + + def __repr__(self): + if len(self.__args__) == 2 and _is_param_expr(self.__args__[0]): + return super().__repr__() + return (f'collections.abc.Callable' + f'[[{", ".join([_type_repr(a) for a in self.__args__[:-1]])}], ' + f'{_type_repr(self.__args__[-1])}]') + + def __reduce__(self): + args = self.__args__ + if not (len(args) == 2 and _is_param_expr(args[0])): + args = list(args[:-1]), args[-1] + return _CallableGenericAlias, (Callable, args) + + def __getitem__(self, item): + # Called during TypeVar substitution, returns the custom subclass + # rather than the default types.GenericAlias object. Most of the + # code is copied from typing's _GenericAlias and the builtin + # types.GenericAlias. + if not isinstance(item, tuple): + item = (item,) + + new_args = super().__getitem__(item).__args__ + + # args[0] occurs due to things like Z[[int, str, bool]] from PEP 612 + if not isinstance(new_args[0], (tuple, list)): + t_result = new_args[-1] + t_args = new_args[:-1] + new_args = (t_args, t_result) + return _CallableGenericAlias(Callable, tuple(new_args)) + +def _is_param_expr(obj): + """Checks if obj matches either a list of types, ``...``, ``ParamSpec`` or + ``_ConcatenateGenericAlias`` from typing.py + """ + if obj is Ellipsis: + return True + if isinstance(obj, list): + return True + obj = type(obj) + names = ('ParamSpec', '_ConcatenateGenericAlias') + return obj.__module__ == 'typing' and any(obj.__name__ == name for name in names) + +def _type_repr(obj): + """Return the repr() of an object, special-casing types (internal helper). + + Copied from :mod:`typing` since collections.abc + shouldn't depend on that module. + (Keep this roughly in sync with the typing version.) + """ + if isinstance(obj, type): + if obj.__module__ == 'builtins': + return obj.__qualname__ + return f'{obj.__module__}.{obj.__qualname__}' + if obj is Ellipsis: + return '...' + if isinstance(obj, FunctionType): + return obj.__name__ + return repr(obj) + + +class Callable(metaclass=ABCMeta): + + __slots__ = () + + @abstractmethod + def __call__(self, *args, **kwds): + return False + + @classmethod + def __subclasshook__(cls, C): + if cls is Callable: + return _check_methods(C, "__call__") + return NotImplemented + + __class_getitem__ = classmethod(_CallableGenericAlias) + + +### SETS ### + + +class Set(Collection): + """A set is a finite, iterable container. + + This class provides concrete generic implementations of all + methods except for __contains__, __iter__ and __len__. + + To override the comparisons (presumably for speed, as the + semantics are fixed), redefine __le__ and __ge__, + then the other operations will automatically follow suit. + """ + + __slots__ = () + + def __le__(self, other): + if not isinstance(other, Set): + return NotImplemented + if len(self) > len(other): + return False + for elem in self: + if elem not in other: + return False + return True + + def __lt__(self, other): + if not isinstance(other, Set): + return NotImplemented + return len(self) < len(other) and self.__le__(other) + + def __gt__(self, other): + if not isinstance(other, Set): + return NotImplemented + return len(self) > len(other) and self.__ge__(other) + + def __ge__(self, other): + if not isinstance(other, Set): + return NotImplemented + if len(self) < len(other): + return False + for elem in other: + if elem not in self: + return False + return True + + def __eq__(self, other): + if not isinstance(other, Set): + return NotImplemented + return len(self) == len(other) and self.__le__(other) + + @classmethod + def _from_iterable(cls, it): + '''Construct an instance of the class from any iterable input. + + Must override this method if the class constructor signature + does not accept an iterable for an input. + ''' + return cls(it) + + def __and__(self, other): + if not isinstance(other, Iterable): + return NotImplemented + return self._from_iterable(value for value in other if value in self) + + __rand__ = __and__ + + def isdisjoint(self, other): + 'Return True if two sets have a null intersection.' + for value in other: + if value in self: + return False + return True + + def __or__(self, other): + if not isinstance(other, Iterable): + return NotImplemented + chain = (e for s in (self, other) for e in s) + return self._from_iterable(chain) + + __ror__ = __or__ + + def __sub__(self, other): + if not isinstance(other, Set): + if not isinstance(other, Iterable): + return NotImplemented + other = self._from_iterable(other) + return self._from_iterable(value for value in self + if value not in other) + + def __rsub__(self, other): + if not isinstance(other, Set): + if not isinstance(other, Iterable): + return NotImplemented + other = self._from_iterable(other) + return self._from_iterable(value for value in other + if value not in self) + + def __xor__(self, other): + if not isinstance(other, Set): + if not isinstance(other, Iterable): + return NotImplemented + other = self._from_iterable(other) + return (self - other) | (other - self) + + __rxor__ = __xor__ + + def _hash(self): + """Compute the hash value of a set. + + Note that we don't define __hash__: not all sets are hashable. + But if you define a hashable set type, its __hash__ should + call this function. + + This must be compatible __eq__. + + All sets ought to compare equal if they contain the same + elements, regardless of how they are implemented, and + regardless of the order of the elements; so there's not much + freedom for __eq__ or __hash__. We match the algorithm used + by the built-in frozenset type. + """ + MAX = sys.maxsize + MASK = 2 * MAX + 1 + n = len(self) + h = 1927868237 * (n + 1) + h &= MASK + for x in self: + hx = hash(x) + h ^= (hx ^ (hx << 16) ^ 89869747) * 3644798167 + h &= MASK + h ^= (h >> 11) ^ (h >> 25) + h = h * 69069 + 907133923 + h &= MASK + if h > MAX: + h -= MASK + 1 + if h == -1: + h = 590923713 + return h + + +Set.register(frozenset) + + +class MutableSet(Set): + """A mutable set is a finite, iterable container. + + This class provides concrete generic implementations of all + methods except for __contains__, __iter__, __len__, + add(), and discard(). + + To override the comparisons (presumably for speed, as the + semantics are fixed), all you have to do is redefine __le__ and + then the other operations will automatically follow suit. + """ + + __slots__ = () + + @abstractmethod + def add(self, value): + """Add an element.""" + raise NotImplementedError + + @abstractmethod + def discard(self, value): + """Remove an element. Do not raise an exception if absent.""" + raise NotImplementedError + + def remove(self, value): + """Remove an element. If not a member, raise a KeyError.""" + if value not in self: + raise KeyError(value) + self.discard(value) + + def pop(self): + """Return the popped value. Raise KeyError if empty.""" + it = iter(self) + try: + value = next(it) + except StopIteration: + raise KeyError from None + self.discard(value) + return value + + def clear(self): + """This is slow (creates N new iterators!) but effective.""" + try: + while True: + self.pop() + except KeyError: + pass + + def __ior__(self, it): + for value in it: + self.add(value) + return self + + def __iand__(self, it): + for value in (self - it): + self.discard(value) + return self + + def __ixor__(self, it): + if it is self: + self.clear() + else: + if not isinstance(it, Set): + it = self._from_iterable(it) + for value in it: + if value in self: + self.discard(value) + else: + self.add(value) + return self + + def __isub__(self, it): + if it is self: + self.clear() + else: + for value in it: + self.discard(value) + return self + + +MutableSet.register(set) + + +### MAPPINGS ### + +class Mapping(Collection): + """A Mapping is a generic container for associating key/value + pairs. + + This class provides concrete generic implementations of all + methods except for __getitem__, __iter__, and __len__. + """ + + __slots__ = () + + # Tell ABCMeta.__new__ that this class should have TPFLAGS_MAPPING set. + __abc_tpflags__ = 1 << 6 # Py_TPFLAGS_MAPPING + + @abstractmethod + def __getitem__(self, key): + raise KeyError + + def get(self, key, default=None): + 'D.get(k[,d]) -> D[k] if k in D, else d. d defaults to None.' + try: + return self[key] + except KeyError: + return default + + def __contains__(self, key): + try: + self[key] + except KeyError: + return False + else: + return True + + def keys(self): + "D.keys() -> a set-like object providing a view on D's keys" + return KeysView(self) + + def items(self): + "D.items() -> a set-like object providing a view on D's items" + return ItemsView(self) + + def values(self): + "D.values() -> an object providing a view on D's values" + return ValuesView(self) + + def __eq__(self, other): + if not isinstance(other, Mapping): + return NotImplemented + return dict(self.items()) == dict(other.items()) + + __reversed__ = None + +Mapping.register(mappingproxy) + + +class MappingView(Sized): + + __slots__ = '_mapping', + + def __init__(self, mapping): + self._mapping = mapping + + def __len__(self): + return len(self._mapping) + + def __repr__(self): + return '{0.__class__.__name__}({0._mapping!r})'.format(self) + + __class_getitem__ = classmethod(GenericAlias) + + +class KeysView(MappingView, Set): + + __slots__ = () + + @classmethod + def _from_iterable(cls, it): + return set(it) + + def __contains__(self, key): + return key in self._mapping + + def __iter__(self): + yield from self._mapping + + +KeysView.register(dict_keys) + + +class ItemsView(MappingView, Set): + + __slots__ = () + + @classmethod + def _from_iterable(cls, it): + return set(it) + + def __contains__(self, item): + key, value = item + try: + v = self._mapping[key] + except KeyError: + return False + else: + return v is value or v == value + + def __iter__(self): + for key in self._mapping: + yield (key, self._mapping[key]) + + +ItemsView.register(dict_items) + + +class ValuesView(MappingView, Collection): + + __slots__ = () + + def __contains__(self, value): + for key in self._mapping: + v = self._mapping[key] + if v is value or v == value: + return True + return False + + def __iter__(self): + for key in self._mapping: + yield self._mapping[key] + + +ValuesView.register(dict_values) + + +class MutableMapping(Mapping): + """A MutableMapping is a generic container for associating + key/value pairs. + + This class provides concrete generic implementations of all + methods except for __getitem__, __setitem__, __delitem__, + __iter__, and __len__. + """ + + __slots__ = () + + @abstractmethod + def __setitem__(self, key, value): + raise KeyError + + @abstractmethod + def __delitem__(self, key): + raise KeyError + + __marker = object() + + def pop(self, key, default=__marker): + '''D.pop(k[,d]) -> v, remove specified key and return the corresponding value. + If key is not found, d is returned if given, otherwise KeyError is raised. + ''' + try: + value = self[key] + except KeyError: + if default is self.__marker: + raise + return default + else: + del self[key] + return value + + def popitem(self): + '''D.popitem() -> (k, v), remove and return some (key, value) pair + as a 2-tuple; but raise KeyError if D is empty. + ''' + try: + key = next(iter(self)) + except StopIteration: + raise KeyError from None + value = self[key] + del self[key] + return key, value + + def clear(self): + 'D.clear() -> None. Remove all items from D.' + try: + while True: + self.popitem() + except KeyError: + pass + + def update(self, other=(), /, **kwds): + ''' D.update([E, ]**F) -> None. Update D from mapping/iterable E and F. + If E present and has a .keys() method, does: for k in E: D[k] = E[k] + If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v + In either case, this is followed by: for k, v in F.items(): D[k] = v + ''' + if isinstance(other, Mapping): + for key in other: + self[key] = other[key] + elif hasattr(other, "keys"): + for key in other.keys(): + self[key] = other[key] + else: + for key, value in other: + self[key] = value + for key, value in kwds.items(): + self[key] = value + + def setdefault(self, key, default=None): + 'D.setdefault(k[,d]) -> D.get(k,d), also set D[k]=d if k not in D' + try: + return self[key] + except KeyError: + self[key] = default + return default + + +MutableMapping.register(dict) + + +### SEQUENCES ### + +class Sequence(Reversible, Collection): + """All the operations on a read-only sequence. + + Concrete subclasses must override __new__ or __init__, + __getitem__, and __len__. + """ + + __slots__ = () + + # Tell ABCMeta.__new__ that this class should have TPFLAGS_SEQUENCE set. + __abc_tpflags__ = 1 << 5 # Py_TPFLAGS_SEQUENCE + + @abstractmethod + def __getitem__(self, index): + raise IndexError + + def __iter__(self): + i = 0 + try: + while True: + v = self[i] + yield v + i += 1 + except IndexError: + return + + def __contains__(self, value): + for v in self: + if v is value or v == value: + return True + return False + + def __reversed__(self): + for i in reversed(range(len(self))): + yield self[i] + + def index(self, value, start=0, stop=None): + '''S.index(value, [start, [stop]]) -> integer -- return first index of value. + Raises ValueError if the value is not present. + + Supporting start and stop arguments is optional, but + recommended. + ''' + if start is not None and start < 0: + start = max(len(self) + start, 0) + if stop is not None and stop < 0: + stop += len(self) + + i = start + while stop is None or i < stop: + try: + v = self[i] + except IndexError: + break + if v is value or v == value: + return i + i += 1 + raise ValueError + + def count(self, value): + 'S.count(value) -> integer -- return number of occurrences of value' + return sum(1 for v in self if v is value or v == value) + +Sequence.register(tuple) +Sequence.register(str) +Sequence.register(range) +Sequence.register(memoryview) + +class _DeprecateByteStringMeta(ABCMeta): + def __new__(cls, name, bases, namespace, **kwargs): + if name != "ByteString": + import warnings + + warnings._deprecated( + "collections.abc.ByteString", + remove=(3, 14), + ) + return super().__new__(cls, name, bases, namespace, **kwargs) + + def __instancecheck__(cls, instance): + import warnings + + warnings._deprecated( + "collections.abc.ByteString", + remove=(3, 14), + ) + return super().__instancecheck__(instance) + +class ByteString(Sequence, metaclass=_DeprecateByteStringMeta): + """This unifies bytes and bytearray. + + XXX Should add all their methods. + """ + + __slots__ = () + +ByteString.register(bytes) +ByteString.register(bytearray) + + +class MutableSequence(Sequence): + """All the operations on a read-write sequence. + + Concrete subclasses must provide __new__ or __init__, + __getitem__, __setitem__, __delitem__, __len__, and insert(). + """ + + __slots__ = () + + @abstractmethod + def __setitem__(self, index, value): + raise IndexError + + @abstractmethod + def __delitem__(self, index): + raise IndexError + + @abstractmethod + def insert(self, index, value): + 'S.insert(index, value) -- insert value before index' + raise IndexError + + def append(self, value): + 'S.append(value) -- append value to the end of the sequence' + self.insert(len(self), value) + + def clear(self): + 'S.clear() -> None -- remove all items from S' + try: + while True: + self.pop() + except IndexError: + pass + + def reverse(self): + 'S.reverse() -- reverse *IN PLACE*' + n = len(self) + for i in range(n//2): + self[i], self[n-i-1] = self[n-i-1], self[i] + + def extend(self, values): + 'S.extend(iterable) -- extend sequence by appending elements from the iterable' + if values is self: + values = list(values) + for v in values: + self.append(v) + + def pop(self, index=-1): + '''S.pop([index]) -> item -- remove and return item at index (default last). + Raise IndexError if list is empty or index is out of range. + ''' + v = self[index] + del self[index] + return v + + def remove(self, value): + '''S.remove(value) -- remove first occurrence of value. + Raise ValueError if the value is not present. + ''' + del self[self.index(value)] + + def __iadd__(self, values): + self.extend(values) + return self + + +MutableSequence.register(list) +MutableSequence.register(bytearray) # Multiply inheriting, see ByteString diff --git a/Lib/_colorize.py b/Lib/_colorize.py new file mode 100644 index 0000000000..70acfd4ad0 --- /dev/null +++ b/Lib/_colorize.py @@ -0,0 +1,67 @@ +import io +import os +import sys + +COLORIZE = True + + +class ANSIColors: + BOLD_GREEN = "\x1b[1;32m" + BOLD_MAGENTA = "\x1b[1;35m" + BOLD_RED = "\x1b[1;31m" + GREEN = "\x1b[32m" + GREY = "\x1b[90m" + MAGENTA = "\x1b[35m" + RED = "\x1b[31m" + RESET = "\x1b[0m" + YELLOW = "\x1b[33m" + + +NoColors = ANSIColors() + +for attr in dir(NoColors): + if not attr.startswith("__"): + setattr(NoColors, attr, "") + + +def get_colors(colorize: bool = False, *, file=None) -> ANSIColors: + if colorize or can_colorize(file=file): + return ANSIColors() + else: + return NoColors + + +def can_colorize(*, file=None) -> bool: + if file is None: + file = sys.stdout + + if not sys.flags.ignore_environment: + if os.environ.get("PYTHON_COLORS") == "0": + return False + if os.environ.get("PYTHON_COLORS") == "1": + return True + if os.environ.get("NO_COLOR"): + return False + if not COLORIZE: + return False + if os.environ.get("FORCE_COLOR"): + return True + if os.environ.get("TERM") == "dumb": + return False + + if not hasattr(file, "fileno"): + return False + + if sys.platform == "win32": + try: + import nt + + if not nt._supports_virtual_terminal(): + return False + except (ImportError, AttributeError): + return False + + try: + return os.isatty(file.fileno()) + except io.UnsupportedOperation: + return file.isatty() diff --git a/Lib/_compat_pickle.py b/Lib/_compat_pickle.py new file mode 100644 index 0000000000..17b9010278 --- /dev/null +++ b/Lib/_compat_pickle.py @@ -0,0 +1,259 @@ +# This module is used to map the old Python 2 names to the new names used in +# Python 3 for the pickle module. This needed to make pickle streams +# generated with Python 2 loadable by Python 3. + +# This is a copy of lib2to3.fixes.fix_imports.MAPPING. We cannot import +# lib2to3 and use the mapping defined there, because lib2to3 uses pickle. +# Thus, this could cause the module to be imported recursively. +IMPORT_MAPPING = { + '__builtin__' : 'builtins', + 'copy_reg': 'copyreg', + 'Queue': 'queue', + 'SocketServer': 'socketserver', + 'ConfigParser': 'configparser', + 'repr': 'reprlib', + 'tkFileDialog': 'tkinter.filedialog', + 'tkSimpleDialog': 'tkinter.simpledialog', + 'tkColorChooser': 'tkinter.colorchooser', + 'tkCommonDialog': 'tkinter.commondialog', + 'Dialog': 'tkinter.dialog', + 'Tkdnd': 'tkinter.dnd', + 'tkFont': 'tkinter.font', + 'tkMessageBox': 'tkinter.messagebox', + 'ScrolledText': 'tkinter.scrolledtext', + 'Tkconstants': 'tkinter.constants', + 'Tix': 'tkinter.tix', + 'ttk': 'tkinter.ttk', + 'Tkinter': 'tkinter', + 'markupbase': '_markupbase', + '_winreg': 'winreg', + 'thread': '_thread', + 'dummy_thread': '_dummy_thread', + 'dbhash': 'dbm.bsd', + 'dumbdbm': 'dbm.dumb', + 'dbm': 'dbm.ndbm', + 'gdbm': 'dbm.gnu', + 'xmlrpclib': 'xmlrpc.client', + 'SimpleXMLRPCServer': 'xmlrpc.server', + 'httplib': 'http.client', + 'htmlentitydefs' : 'html.entities', + 'HTMLParser' : 'html.parser', + 'Cookie': 'http.cookies', + 'cookielib': 'http.cookiejar', + 'BaseHTTPServer': 'http.server', + 'test.test_support': 'test.support', + 'commands': 'subprocess', + 'urlparse' : 'urllib.parse', + 'robotparser' : 'urllib.robotparser', + 'urllib2': 'urllib.request', + 'anydbm': 'dbm', + '_abcoll' : 'collections.abc', +} + + +# This contains rename rules that are easy to handle. We ignore the more +# complex stuff (e.g. mapping the names in the urllib and types modules). +# These rules should be run before import names are fixed. +NAME_MAPPING = { + ('__builtin__', 'xrange'): ('builtins', 'range'), + ('__builtin__', 'reduce'): ('functools', 'reduce'), + ('__builtin__', 'intern'): ('sys', 'intern'), + ('__builtin__', 'unichr'): ('builtins', 'chr'), + ('__builtin__', 'unicode'): ('builtins', 'str'), + ('__builtin__', 'long'): ('builtins', 'int'), + ('itertools', 'izip'): ('builtins', 'zip'), + ('itertools', 'imap'): ('builtins', 'map'), + ('itertools', 'ifilter'): ('builtins', 'filter'), + ('itertools', 'ifilterfalse'): ('itertools', 'filterfalse'), + ('itertools', 'izip_longest'): ('itertools', 'zip_longest'), + ('UserDict', 'IterableUserDict'): ('collections', 'UserDict'), + ('UserList', 'UserList'): ('collections', 'UserList'), + ('UserString', 'UserString'): ('collections', 'UserString'), + ('whichdb', 'whichdb'): ('dbm', 'whichdb'), + ('_socket', 'fromfd'): ('socket', 'fromfd'), + ('_multiprocessing', 'Connection'): ('multiprocessing.connection', 'Connection'), + ('multiprocessing.process', 'Process'): ('multiprocessing.context', 'Process'), + ('multiprocessing.forking', 'Popen'): ('multiprocessing.popen_fork', 'Popen'), + ('urllib', 'ContentTooShortError'): ('urllib.error', 'ContentTooShortError'), + ('urllib', 'getproxies'): ('urllib.request', 'getproxies'), + ('urllib', 'pathname2url'): ('urllib.request', 'pathname2url'), + ('urllib', 'quote_plus'): ('urllib.parse', 'quote_plus'), + ('urllib', 'quote'): ('urllib.parse', 'quote'), + ('urllib', 'unquote_plus'): ('urllib.parse', 'unquote_plus'), + ('urllib', 'unquote'): ('urllib.parse', 'unquote'), + ('urllib', 'url2pathname'): ('urllib.request', 'url2pathname'), + ('urllib', 'urlcleanup'): ('urllib.request', 'urlcleanup'), + ('urllib', 'urlencode'): ('urllib.parse', 'urlencode'), + ('urllib', 'urlopen'): ('urllib.request', 'urlopen'), + ('urllib', 'urlretrieve'): ('urllib.request', 'urlretrieve'), + ('urllib2', 'HTTPError'): ('urllib.error', 'HTTPError'), + ('urllib2', 'URLError'): ('urllib.error', 'URLError'), +} + +PYTHON2_EXCEPTIONS = ( + "ArithmeticError", + "AssertionError", + "AttributeError", + "BaseException", + "BufferError", + "BytesWarning", + "DeprecationWarning", + "EOFError", + "EnvironmentError", + "Exception", + "FloatingPointError", + "FutureWarning", + "GeneratorExit", + "IOError", + "ImportError", + "ImportWarning", + "IndentationError", + "IndexError", + "KeyError", + "KeyboardInterrupt", + "LookupError", + "MemoryError", + "NameError", + "NotImplementedError", + "OSError", + "OverflowError", + "PendingDeprecationWarning", + "ReferenceError", + "RuntimeError", + "RuntimeWarning", + # StandardError is gone in Python 3, so we map it to Exception + "StopIteration", + "SyntaxError", + "SyntaxWarning", + "SystemError", + "SystemExit", + "TabError", + "TypeError", + "UnboundLocalError", + "UnicodeDecodeError", + "UnicodeEncodeError", + "UnicodeError", + "UnicodeTranslateError", + "UnicodeWarning", + "UserWarning", + "ValueError", + "Warning", + "ZeroDivisionError", +) + +try: + WindowsError +except NameError: + pass +else: + PYTHON2_EXCEPTIONS += ("WindowsError",) + +# NOTE: RUSTPYTHON exceptions +try: + JitError +except NameError: + pass +else: + PYTHON2_EXCEPTIONS += ("JitError",) + +for excname in PYTHON2_EXCEPTIONS: + NAME_MAPPING[("exceptions", excname)] = ("builtins", excname) + +MULTIPROCESSING_EXCEPTIONS = ( + 'AuthenticationError', + 'BufferTooShort', + 'ProcessError', + 'TimeoutError', +) + +for excname in MULTIPROCESSING_EXCEPTIONS: + NAME_MAPPING[("multiprocessing", excname)] = ("multiprocessing.context", excname) + +# Same, but for 3.x to 2.x +REVERSE_IMPORT_MAPPING = dict((v, k) for (k, v) in IMPORT_MAPPING.items()) +assert len(REVERSE_IMPORT_MAPPING) == len(IMPORT_MAPPING) +REVERSE_NAME_MAPPING = dict((v, k) for (k, v) in NAME_MAPPING.items()) +assert len(REVERSE_NAME_MAPPING) == len(NAME_MAPPING) + +# Non-mutual mappings. + +IMPORT_MAPPING.update({ + 'cPickle': 'pickle', + '_elementtree': 'xml.etree.ElementTree', + 'FileDialog': 'tkinter.filedialog', + 'SimpleDialog': 'tkinter.simpledialog', + 'DocXMLRPCServer': 'xmlrpc.server', + 'SimpleHTTPServer': 'http.server', + 'CGIHTTPServer': 'http.server', + # For compatibility with broken pickles saved in old Python 3 versions + 'UserDict': 'collections', + 'UserList': 'collections', + 'UserString': 'collections', + 'whichdb': 'dbm', + 'StringIO': 'io', + 'cStringIO': 'io', +}) + +REVERSE_IMPORT_MAPPING.update({ + '_bz2': 'bz2', + '_dbm': 'dbm', + '_functools': 'functools', + '_gdbm': 'gdbm', + '_pickle': 'pickle', +}) + +NAME_MAPPING.update({ + ('__builtin__', 'basestring'): ('builtins', 'str'), + ('exceptions', 'StandardError'): ('builtins', 'Exception'), + ('UserDict', 'UserDict'): ('collections', 'UserDict'), + ('socket', '_socketobject'): ('socket', 'SocketType'), +}) + +REVERSE_NAME_MAPPING.update({ + ('_functools', 'reduce'): ('__builtin__', 'reduce'), + ('tkinter.filedialog', 'FileDialog'): ('FileDialog', 'FileDialog'), + ('tkinter.filedialog', 'LoadFileDialog'): ('FileDialog', 'LoadFileDialog'), + ('tkinter.filedialog', 'SaveFileDialog'): ('FileDialog', 'SaveFileDialog'), + ('tkinter.simpledialog', 'SimpleDialog'): ('SimpleDialog', 'SimpleDialog'), + ('xmlrpc.server', 'ServerHTMLDoc'): ('DocXMLRPCServer', 'ServerHTMLDoc'), + ('xmlrpc.server', 'XMLRPCDocGenerator'): + ('DocXMLRPCServer', 'XMLRPCDocGenerator'), + ('xmlrpc.server', 'DocXMLRPCRequestHandler'): + ('DocXMLRPCServer', 'DocXMLRPCRequestHandler'), + ('xmlrpc.server', 'DocXMLRPCServer'): + ('DocXMLRPCServer', 'DocXMLRPCServer'), + ('xmlrpc.server', 'DocCGIXMLRPCRequestHandler'): + ('DocXMLRPCServer', 'DocCGIXMLRPCRequestHandler'), + ('http.server', 'SimpleHTTPRequestHandler'): + ('SimpleHTTPServer', 'SimpleHTTPRequestHandler'), + ('http.server', 'CGIHTTPRequestHandler'): + ('CGIHTTPServer', 'CGIHTTPRequestHandler'), + ('_socket', 'socket'): ('socket', '_socketobject'), +}) + +PYTHON3_OSERROR_EXCEPTIONS = ( + 'BrokenPipeError', + 'ChildProcessError', + 'ConnectionAbortedError', + 'ConnectionError', + 'ConnectionRefusedError', + 'ConnectionResetError', + 'FileExistsError', + 'FileNotFoundError', + 'InterruptedError', + 'IsADirectoryError', + 'NotADirectoryError', + 'PermissionError', + 'ProcessLookupError', + 'TimeoutError', +) + +for excname in PYTHON3_OSERROR_EXCEPTIONS: + REVERSE_NAME_MAPPING[('builtins', excname)] = ('exceptions', 'OSError') + +PYTHON3_IMPORTERROR_EXCEPTIONS = ( + 'ModuleNotFoundError', +) + +for excname in PYTHON3_IMPORTERROR_EXCEPTIONS: + REVERSE_NAME_MAPPING[('builtins', excname)] = ('exceptions', 'ImportError') diff --git a/Lib/_compression.py b/Lib/_compression.py new file mode 100644 index 0000000000..e8b70aa0a3 --- /dev/null +++ b/Lib/_compression.py @@ -0,0 +1,162 @@ +"""Internal classes used by the gzip, lzma and bz2 modules""" + +import io +import sys + +BUFFER_SIZE = io.DEFAULT_BUFFER_SIZE # Compressed data read chunk size + + +class BaseStream(io.BufferedIOBase): + """Mode-checking helper functions.""" + + def _check_not_closed(self): + if self.closed: + raise ValueError("I/O operation on closed file") + + def _check_can_read(self): + if not self.readable(): + raise io.UnsupportedOperation("File not open for reading") + + def _check_can_write(self): + if not self.writable(): + raise io.UnsupportedOperation("File not open for writing") + + def _check_can_seek(self): + if not self.readable(): + raise io.UnsupportedOperation("Seeking is only supported " + "on files open for reading") + if not self.seekable(): + raise io.UnsupportedOperation("The underlying file object " + "does not support seeking") + + +class DecompressReader(io.RawIOBase): + """Adapts the decompressor API to a RawIOBase reader API""" + + def readable(self): + return True + + def __init__(self, fp, decomp_factory, trailing_error=(), **decomp_args): + self._fp = fp + self._eof = False + self._pos = 0 # Current offset in decompressed stream + + # Set to size of decompressed stream once it is known, for SEEK_END + self._size = -1 + + # Save the decompressor factory and arguments. + # If the file contains multiple compressed streams, each + # stream will need a separate decompressor object. A new decompressor + # object is also needed when implementing a backwards seek(). + self._decomp_factory = decomp_factory + self._decomp_args = decomp_args + self._decompressor = self._decomp_factory(**self._decomp_args) + + # Exception class to catch from decompressor signifying invalid + # trailing data to ignore + self._trailing_error = trailing_error + + def close(self): + self._decompressor = None + return super().close() + + def seekable(self): + return self._fp.seekable() + + def readinto(self, b): + with memoryview(b) as view, view.cast("B") as byte_view: + data = self.read(len(byte_view)) + byte_view[:len(data)] = data + return len(data) + + def read(self, size=-1): + if size < 0: + return self.readall() + + if not size or self._eof: + return b"" + data = None # Default if EOF is encountered + # Depending on the input data, our call to the decompressor may not + # return any data. In this case, try again after reading another block. + while True: + if self._decompressor.eof: + rawblock = (self._decompressor.unused_data or + self._fp.read(BUFFER_SIZE)) + if not rawblock: + break + # Continue to next stream. + self._decompressor = self._decomp_factory( + **self._decomp_args) + try: + data = self._decompressor.decompress(rawblock, size) + except self._trailing_error: + # Trailing data isn't a valid compressed stream; ignore it. + break + else: + if self._decompressor.needs_input: + rawblock = self._fp.read(BUFFER_SIZE) + if not rawblock: + raise EOFError("Compressed file ended before the " + "end-of-stream marker was reached") + else: + rawblock = b"" + data = self._decompressor.decompress(rawblock, size) + if data: + break + if not data: + self._eof = True + self._size = self._pos + return b"" + self._pos += len(data) + return data + + def readall(self): + chunks = [] + # sys.maxsize means the max length of output buffer is unlimited, + # so that the whole input buffer can be decompressed within one + # .decompress() call. + while data := self.read(sys.maxsize): + chunks.append(data) + + return b"".join(chunks) + + # Rewind the file to the beginning of the data stream. + def _rewind(self): + self._fp.seek(0) + self._eof = False + self._pos = 0 + self._decompressor = self._decomp_factory(**self._decomp_args) + + def seek(self, offset, whence=io.SEEK_SET): + # Recalculate offset as an absolute file position. + if whence == io.SEEK_SET: + pass + elif whence == io.SEEK_CUR: + offset = self._pos + offset + elif whence == io.SEEK_END: + # Seeking relative to EOF - we need to know the file's size. + if self._size < 0: + while self.read(io.DEFAULT_BUFFER_SIZE): + pass + offset = self._size + offset + else: + raise ValueError("Invalid value for whence: {}".format(whence)) + + # Make it so that offset is the number of bytes to skip forward. + if offset < self._pos: + self._rewind() + else: + offset -= self._pos + + # Read and discard data until we reach the desired position. + while offset > 0: + data = self.read(min(io.DEFAULT_BUFFER_SIZE, offset)) + if not data: + break + offset -= len(data) + + return self._pos + + def tell(self): + """Return the current file position.""" + return self._pos diff --git a/Lib/_dummy_os.py b/Lib/_dummy_os.py new file mode 100644 index 0000000000..38e287af69 --- /dev/null +++ b/Lib/_dummy_os.py @@ -0,0 +1,74 @@ +""" +A shim of the os module containing only simple path-related utilities +""" + +try: + from os import * +except ImportError: + import abc, sys + + def __getattr__(name): + if name in {"_path_normpath", "__path__"}: + raise AttributeError(name) + if name.isupper(): + return 0 + def dummy(*args, **kwargs): + import io + return io.UnsupportedOperation(f"{name}: no os specific module found") + dummy.__name__ = f"dummy_{name}" + return dummy + + sys.modules['os'] = sys.modules['posix'] = sys.modules[__name__] + + import posixpath as path + sys.modules['os.path'] = path + del sys + + sep = path.sep + supports_dir_fd = set() + supports_effective_ids = set() + supports_fd = set() + supports_follow_symlinks = set() + + + def fspath(path): + """Return the path representation of a path-like object. + + If str or bytes is passed in, it is returned unchanged. Otherwise the + os.PathLike interface is used to get the path representation. If the + path representation is not str or bytes, TypeError is raised. If the + provided path is not str, bytes, or os.PathLike, TypeError is raised. + """ + if isinstance(path, (str, bytes)): + return path + + # Work from the object's type to match method resolution of other magic + # methods. + path_type = type(path) + try: + path_repr = path_type.__fspath__(path) + except AttributeError: + if hasattr(path_type, '__fspath__'): + raise + else: + raise TypeError("expected str, bytes or os.PathLike object, " + "not " + path_type.__name__) + if isinstance(path_repr, (str, bytes)): + return path_repr + else: + raise TypeError("expected {}.__fspath__() to return str or bytes, " + "not {}".format(path_type.__name__, + type(path_repr).__name__)) + + class PathLike(abc.ABC): + + """Abstract base class for implementing the file system path protocol.""" + + @abc.abstractmethod + def __fspath__(self): + """Return the file system path representation of the object.""" + raise NotImplementedError + + @classmethod + def __subclasshook__(cls, subclass): + return hasattr(subclass, '__fspath__') diff --git a/Lib/_dummy_thread.py b/Lib/_dummy_thread.py new file mode 100644 index 0000000000..424b0b3be5 --- /dev/null +++ b/Lib/_dummy_thread.py @@ -0,0 +1,203 @@ +"""Drop-in replacement for the thread module. + +Meant to be used as a brain-dead substitute so that threaded code does +not need to be rewritten for when the thread module is not present. + +Suggested usage is:: + + try: + import _thread + except ImportError: + import _dummy_thread as _thread + +""" +# Exports only things specified by thread documentation; +# skipping obsolete synonyms allocate(), start_new(), exit_thread(). +__all__ = ['error', 'start_new_thread', 'exit', 'get_ident', 'allocate_lock', + 'interrupt_main', 'LockType', 'RLock', + '_count'] + +# A dummy value +TIMEOUT_MAX = 2**31 + +# NOTE: this module can be imported early in the extension building process, +# and so top level imports of other modules should be avoided. Instead, all +# imports are done when needed on a function-by-function basis. Since threads +# are disabled, the import lock should not be an issue anyway (??). + +error = RuntimeError + +def start_new_thread(function, args, kwargs={}): + """Dummy implementation of _thread.start_new_thread(). + + Compatibility is maintained by making sure that ``args`` is a + tuple and ``kwargs`` is a dictionary. If an exception is raised + and it is SystemExit (which can be done by _thread.exit()) it is + caught and nothing is done; all other exceptions are printed out + by using traceback.print_exc(). + + If the executed function calls interrupt_main the KeyboardInterrupt will be + raised when the function returns. + + """ + if type(args) != type(tuple()): + raise TypeError("2nd arg must be a tuple") + if type(kwargs) != type(dict()): + raise TypeError("3rd arg must be a dict") + global _main + _main = False + try: + function(*args, **kwargs) + except SystemExit: + pass + except: + import traceback + traceback.print_exc() + _main = True + global _interrupt + if _interrupt: + _interrupt = False + raise KeyboardInterrupt + +def exit(): + """Dummy implementation of _thread.exit().""" + raise SystemExit + +def get_ident(): + """Dummy implementation of _thread.get_ident(). + + Since this module should only be used when _threadmodule is not + available, it is safe to assume that the current process is the + only thread. Thus a constant can be safely returned. + """ + return -1 + +def allocate_lock(): + """Dummy implementation of _thread.allocate_lock().""" + return LockType() + +def stack_size(size=None): + """Dummy implementation of _thread.stack_size().""" + if size is not None: + raise error("setting thread stack size not supported") + return 0 + +def _set_sentinel(): + """Dummy implementation of _thread._set_sentinel().""" + return LockType() + +def _count(): + """Dummy implementation of _thread._count().""" + return 0 + +class LockType(object): + """Class implementing dummy implementation of _thread.LockType. + + Compatibility is maintained by maintaining self.locked_status + which is a boolean that stores the state of the lock. Pickling of + the lock, though, should not be done since if the _thread module is + then used with an unpickled ``lock()`` from here problems could + occur from this class not having atomic methods. + + """ + + def __init__(self): + self.locked_status = False + + def acquire(self, waitflag=None, timeout=-1): + """Dummy implementation of acquire(). + + For blocking calls, self.locked_status is automatically set to + True and returned appropriately based on value of + ``waitflag``. If it is non-blocking, then the value is + actually checked and not set if it is already acquired. This + is all done so that threading.Condition's assert statements + aren't triggered and throw a little fit. + + """ + if waitflag is None or waitflag: + self.locked_status = True + return True + else: + if not self.locked_status: + self.locked_status = True + return True + else: + if timeout > 0: + import time + time.sleep(timeout) + return False + + __enter__ = acquire + + def __exit__(self, typ, val, tb): + self.release() + + def release(self): + """Release the dummy lock.""" + # XXX Perhaps shouldn't actually bother to test? Could lead + # to problems for complex, threaded code. + if not self.locked_status: + raise error + self.locked_status = False + return True + + def locked(self): + return self.locked_status + + def _at_fork_reinit(self): + self.locked_status = False + + def __repr__(self): + return "<%s %s.%s object at %s>" % ( + "locked" if self.locked_status else "unlocked", + self.__class__.__module__, + self.__class__.__qualname__, + hex(id(self)) + ) + +# Used to signal that interrupt_main was called in a "thread" +_interrupt = False +# True when not executing in a "thread" +_main = True + +def interrupt_main(): + """Set _interrupt flag to True to have start_new_thread raise + KeyboardInterrupt upon exiting.""" + if _main: + raise KeyboardInterrupt + else: + global _interrupt + _interrupt = True + +class RLock: + def __init__(self): + self.locked_count = 0 + + def acquire(self, waitflag=None, timeout=-1): + self.locked_count += 1 + return True + + __enter__ = acquire + + def __exit__(self, typ, val, tb): + self.release() + + def release(self): + if not self.locked_count: + raise error + self.locked_count -= 1 + return True + + def locked(self): + return self.locked_status != 0 + + def __repr__(self): + return "<%s %s.%s object owner=%s count=%s at %s>" % ( + "locked" if self.locked_count else "unlocked", + self.__class__.__module__, + self.__class__.__qualname__, + get_ident() if self.locked_count else 0, + self.locked_count, + hex(id(self)) + ) diff --git a/Lib/_ios_support.py b/Lib/_ios_support.py new file mode 100644 index 0000000000..20467a7c2b --- /dev/null +++ b/Lib/_ios_support.py @@ -0,0 +1,71 @@ +import sys +try: + from ctypes import cdll, c_void_p, c_char_p, util +except ImportError: + # ctypes is an optional module. If it's not present, we're limited in what + # we can tell about the system, but we don't want to prevent the module + # from working. + print("ctypes isn't available; iOS system calls will not be available", file=sys.stderr) + objc = None +else: + # ctypes is available. Load the ObjC library, and wrap the objc_getClass, + # sel_registerName methods + lib = util.find_library("objc") + if lib is None: + # Failed to load the objc library + raise ImportError("ObjC runtime library couldn't be loaded") + + objc = cdll.LoadLibrary(lib) + objc.objc_getClass.restype = c_void_p + objc.objc_getClass.argtypes = [c_char_p] + objc.sel_registerName.restype = c_void_p + objc.sel_registerName.argtypes = [c_char_p] + + +def get_platform_ios(): + # Determine if this is a simulator using the multiarch value + is_simulator = sys.implementation._multiarch.endswith("simulator") + + # We can't use ctypes; abort + if not objc: + return None + + # Most of the methods return ObjC objects + objc.objc_msgSend.restype = c_void_p + # All the methods used have no arguments. + objc.objc_msgSend.argtypes = [c_void_p, c_void_p] + + # Equivalent of: + # device = [UIDevice currentDevice] + UIDevice = objc.objc_getClass(b"UIDevice") + SEL_currentDevice = objc.sel_registerName(b"currentDevice") + device = objc.objc_msgSend(UIDevice, SEL_currentDevice) + + # Equivalent of: + # device_systemVersion = [device systemVersion] + SEL_systemVersion = objc.sel_registerName(b"systemVersion") + device_systemVersion = objc.objc_msgSend(device, SEL_systemVersion) + + # Equivalent of: + # device_systemName = [device systemName] + SEL_systemName = objc.sel_registerName(b"systemName") + device_systemName = objc.objc_msgSend(device, SEL_systemName) + + # Equivalent of: + # device_model = [device model] + SEL_model = objc.sel_registerName(b"model") + device_model = objc.objc_msgSend(device, SEL_model) + + # UTF8String returns a const char*; + SEL_UTF8String = objc.sel_registerName(b"UTF8String") + objc.objc_msgSend.restype = c_char_p + + # Equivalent of: + # system = [device_systemName UTF8String] + # release = [device_systemVersion UTF8String] + # model = [device_model UTF8String] + system = objc.objc_msgSend(device_systemName, SEL_UTF8String).decode() + release = objc.objc_msgSend(device_systemVersion, SEL_UTF8String).decode() + model = objc.objc_msgSend(device_model, SEL_UTF8String).decode() + + return system, release, model, is_simulator diff --git a/Lib/_markupbase.py b/Lib/_markupbase.py new file mode 100644 index 0000000000..3ad7e27996 --- /dev/null +++ b/Lib/_markupbase.py @@ -0,0 +1,396 @@ +"""Shared support for scanning document type declarations in HTML and XHTML. + +This module is used as a foundation for the html.parser module. It has no +documented public API and should not be used directly. + +""" + +import re + +_declname_match = re.compile(r'[a-zA-Z][-_.a-zA-Z0-9]*\s*').match +_declstringlit_match = re.compile(r'(\'[^\']*\'|"[^"]*")\s*').match +_commentclose = re.compile(r'--\s*>') +_markedsectionclose = re.compile(r']\s*]\s*>') + +# An analysis of the MS-Word extensions is available at +# http://www.planetpublish.com/xmlarena/xap/Thursday/WordtoXML.pdf + +_msmarkedsectionclose = re.compile(r']\s*>') + +del re + + +class ParserBase: + """Parser base class which provides some common support methods used + by the SGML/HTML and XHTML parsers.""" + + def __init__(self): + if self.__class__ is ParserBase: + raise RuntimeError( + "_markupbase.ParserBase must be subclassed") + + def reset(self): + self.lineno = 1 + self.offset = 0 + + def getpos(self): + """Return current line number and offset.""" + return self.lineno, self.offset + + # Internal -- update line number and offset. This should be + # called for each piece of data exactly once, in order -- in other + # words the concatenation of all the input strings to this + # function should be exactly the entire input. + def updatepos(self, i, j): + if i >= j: + return j + rawdata = self.rawdata + nlines = rawdata.count("\n", i, j) + if nlines: + self.lineno = self.lineno + nlines + pos = rawdata.rindex("\n", i, j) # Should not fail + self.offset = j-(pos+1) + else: + self.offset = self.offset + j-i + return j + + _decl_otherchars = '' + + # Internal -- parse declaration (for use by subclasses). + def parse_declaration(self, i): + # This is some sort of declaration; in "HTML as + # deployed," this should only be the document type + # declaration (""). + # ISO 8879:1986, however, has more complex + # declaration syntax for elements in , including: + # --comment-- + # [marked section] + # name in the following list: ENTITY, DOCTYPE, ELEMENT, + # ATTLIST, NOTATION, SHORTREF, USEMAP, + # LINKTYPE, LINK, IDLINK, USELINK, SYSTEM + rawdata = self.rawdata + j = i + 2 + assert rawdata[i:j] == "": + # the empty comment + return j + 1 + if rawdata[j:j+1] in ("-", ""): + # Start of comment followed by buffer boundary, + # or just a buffer boundary. + return -1 + # A simple, practical version could look like: ((name|stringlit) S*) + '>' + n = len(rawdata) + if rawdata[j:j+2] == '--': #comment + # Locate --.*-- as the body of the comment + return self.parse_comment(i) + elif rawdata[j] == '[': #marked section + # Locate [statusWord [...arbitrary SGML...]] as the body of the marked section + # Where statusWord is one of TEMP, CDATA, IGNORE, INCLUDE, RCDATA + # Note that this is extended by Microsoft Office "Save as Web" function + # to include [if...] and [endif]. + return self.parse_marked_section(i) + else: #all other declaration elements + decltype, j = self._scan_name(j, i) + if j < 0: + return j + if decltype == "doctype": + self._decl_otherchars = '' + while j < n: + c = rawdata[j] + if c == ">": + # end of declaration syntax + data = rawdata[i+2:j] + if decltype == "doctype": + self.handle_decl(data) + else: + # According to the HTML5 specs sections "8.2.4.44 Bogus + # comment state" and "8.2.4.45 Markup declaration open + # state", a comment token should be emitted. + # Calling unknown_decl provides more flexibility though. + self.unknown_decl(data) + return j + 1 + if c in "\"'": + m = _declstringlit_match(rawdata, j) + if not m: + return -1 # incomplete + j = m.end() + elif c in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ": + name, j = self._scan_name(j, i) + elif c in self._decl_otherchars: + j = j + 1 + elif c == "[": + # this could be handled in a separate doctype parser + if decltype == "doctype": + j = self._parse_doctype_subset(j + 1, i) + elif decltype in {"attlist", "linktype", "link", "element"}: + # must tolerate []'d groups in a content model in an element declaration + # also in data attribute specifications of attlist declaration + # also link type declaration subsets in linktype declarations + # also link attribute specification lists in link declarations + raise AssertionError("unsupported '[' char in %s declaration" % decltype) + else: + raise AssertionError("unexpected '[' char in declaration") + else: + raise AssertionError("unexpected %r char in declaration" % rawdata[j]) + if j < 0: + return j + return -1 # incomplete + + # Internal -- parse a marked section + # Override this to handle MS-word extension syntax content + def parse_marked_section(self, i, report=1): + rawdata= self.rawdata + assert rawdata[i:i+3] == ' ending + match= _markedsectionclose.search(rawdata, i+3) + elif sectName in {"if", "else", "endif"}: + # look for MS Office ]> ending + match= _msmarkedsectionclose.search(rawdata, i+3) + else: + raise AssertionError( + 'unknown status keyword %r in marked section' % rawdata[i+3:j] + ) + if not match: + return -1 + if report: + j = match.start(0) + self.unknown_decl(rawdata[i+3: j]) + return match.end(0) + + # Internal -- parse comment, return length or -1 if not terminated + def parse_comment(self, i, report=1): + rawdata = self.rawdata + if rawdata[i:i+4] != ' a, b, c + abc_to_rgb(a, b, c) --> r, g, b + +All inputs and outputs are triples of floats in the range [0.0...1.0] +(with the exception of I and Q, which covers a slightly larger range). +Inputs outside the valid range may cause exceptions or invalid outputs. + +Supported color systems: +RGB: Red, Green, Blue components +YIQ: Luminance, Chrominance (used by composite video signals) +HLS: Hue, Luminance, Saturation +HSV: Hue, Saturation, Value +""" + +# References: +# http://en.wikipedia.org/wiki/YIQ +# http://en.wikipedia.org/wiki/HLS_color_space +# http://en.wikipedia.org/wiki/HSV_color_space + +__all__ = ["rgb_to_yiq","yiq_to_rgb","rgb_to_hls","hls_to_rgb", + "rgb_to_hsv","hsv_to_rgb"] + +# Some floating-point constants + +ONE_THIRD = 1.0/3.0 +ONE_SIXTH = 1.0/6.0 +TWO_THIRD = 2.0/3.0 + +# YIQ: used by composite video signals (linear combinations of RGB) +# Y: perceived grey level (0.0 == black, 1.0 == white) +# I, Q: color components +# +# There are a great many versions of the constants used in these formulae. +# The ones in this library uses constants from the FCC version of NTSC. def rgb_to_yiq(r, g, b): y = 0.30*r + 0.59*g + 0.11*b @@ -8,3 +43,124 @@ def rgb_to_yiq(r, g, b): q = 0.48*(r-y) + 0.41*(b-y) return (y, i, q) +def yiq_to_rgb(y, i, q): + # r = y + (0.27*q + 0.41*i) / (0.74*0.41 + 0.27*0.48) + # b = y + (0.74*q - 0.48*i) / (0.74*0.41 + 0.27*0.48) + # g = y - (0.30*(r-y) + 0.11*(b-y)) / 0.59 + + r = y + 0.9468822170900693*i + 0.6235565819861433*q + g = y - 0.27478764629897834*i - 0.6356910791873801*q + b = y - 1.1085450346420322*i + 1.7090069284064666*q + + if r < 0.0: + r = 0.0 + if g < 0.0: + g = 0.0 + if b < 0.0: + b = 0.0 + if r > 1.0: + r = 1.0 + if g > 1.0: + g = 1.0 + if b > 1.0: + b = 1.0 + return (r, g, b) + + +# HLS: Hue, Luminance, Saturation +# H: position in the spectrum +# L: color lightness +# S: color saturation + +def rgb_to_hls(r, g, b): + maxc = max(r, g, b) + minc = min(r, g, b) + sumc = (maxc+minc) + rangec = (maxc-minc) + l = sumc/2.0 + if minc == maxc: + return 0.0, l, 0.0 + if l <= 0.5: + s = rangec / sumc + else: + s = rangec / (2.0-maxc-minc) # Not always 2.0-sumc: gh-106498. + rc = (maxc-r) / rangec + gc = (maxc-g) / rangec + bc = (maxc-b) / rangec + if r == maxc: + h = bc-gc + elif g == maxc: + h = 2.0+rc-bc + else: + h = 4.0+gc-rc + h = (h/6.0) % 1.0 + return h, l, s + +def hls_to_rgb(h, l, s): + if s == 0.0: + return l, l, l + if l <= 0.5: + m2 = l * (1.0+s) + else: + m2 = l+s-(l*s) + m1 = 2.0*l - m2 + return (_v(m1, m2, h+ONE_THIRD), _v(m1, m2, h), _v(m1, m2, h-ONE_THIRD)) + +def _v(m1, m2, hue): + hue = hue % 1.0 + if hue < ONE_SIXTH: + return m1 + (m2-m1)*hue*6.0 + if hue < 0.5: + return m2 + if hue < TWO_THIRD: + return m1 + (m2-m1)*(TWO_THIRD-hue)*6.0 + return m1 + + +# HSV: Hue, Saturation, Value +# H: position in the spectrum +# S: color saturation ("purity") +# V: color brightness + +def rgb_to_hsv(r, g, b): + maxc = max(r, g, b) + minc = min(r, g, b) + rangec = (maxc-minc) + v = maxc + if minc == maxc: + return 0.0, 0.0, v + s = rangec / maxc + rc = (maxc-r) / rangec + gc = (maxc-g) / rangec + bc = (maxc-b) / rangec + if r == maxc: + h = bc-gc + elif g == maxc: + h = 2.0+rc-bc + else: + h = 4.0+gc-rc + h = (h/6.0) % 1.0 + return h, s, v + +def hsv_to_rgb(h, s, v): + if s == 0.0: + return v, v, v + i = int(h*6.0) # XXX assume int() truncates! + f = (h*6.0) - i + p = v*(1.0 - s) + q = v*(1.0 - s*f) + t = v*(1.0 - s*(1.0-f)) + i = i%6 + if i == 0: + return v, t, p + if i == 1: + return q, v, p + if i == 2: + return p, v, t + if i == 3: + return p, q, v + if i == 4: + return t, p, v + if i == 5: + return v, p, q + # Cannot get here diff --git a/Lib/compileall.py b/Lib/compileall.py new file mode 100644 index 0000000000..a388931fb5 --- /dev/null +++ b/Lib/compileall.py @@ -0,0 +1,463 @@ +"""Module/script to byte-compile all .py files to .pyc files. + +When called as a script with arguments, this compiles the directories +given as arguments recursively; the -l option prevents it from +recursing into directories. + +Without arguments, it compiles all modules on sys.path, without +recursing into subdirectories. (Even though it should do so for +packages -- for now, you'll have to deal with packages separately.) + +See module py_compile for details of the actual byte-compilation. +""" +import os +import sys +import importlib.util +import py_compile +import struct +import filecmp + +from functools import partial +from pathlib import Path + +__all__ = ["compile_dir","compile_file","compile_path"] + +def _walk_dir(dir, maxlevels, quiet=0): + if quiet < 2 and isinstance(dir, os.PathLike): + dir = os.fspath(dir) + if not quiet: + print('Listing {!r}...'.format(dir)) + try: + names = os.listdir(dir) + except OSError: + if quiet < 2: + print("Can't list {!r}".format(dir)) + names = [] + names.sort() + for name in names: + if name == '__pycache__': + continue + fullname = os.path.join(dir, name) + if not os.path.isdir(fullname): + yield fullname + elif (maxlevels > 0 and name != os.curdir and name != os.pardir and + os.path.isdir(fullname) and not os.path.islink(fullname)): + yield from _walk_dir(fullname, maxlevels=maxlevels - 1, + quiet=quiet) + +def compile_dir(dir, maxlevels=None, ddir=None, force=False, + rx=None, quiet=0, legacy=False, optimize=-1, workers=1, + invalidation_mode=None, *, stripdir=None, + prependdir=None, limit_sl_dest=None, hardlink_dupes=False): + """Byte-compile all modules in the given directory tree. + + Arguments (only dir is required): + + dir: the directory to byte-compile + maxlevels: maximum recursion level (default `sys.getrecursionlimit()`) + ddir: the directory that will be prepended to the path to the + file as it is compiled into each byte-code file. + force: if True, force compilation, even if timestamps are up-to-date + quiet: full output with False or 0, errors only with 1, + no output with 2 + legacy: if True, produce legacy pyc paths instead of PEP 3147 paths + optimize: int or list of optimization levels or -1 for level of + the interpreter. Multiple levels leads to multiple compiled + files each with one optimization level. + workers: maximum number of parallel workers + invalidation_mode: how the up-to-dateness of the pyc will be checked + stripdir: part of path to left-strip from source file path + prependdir: path to prepend to beginning of original file path, applied + after stripdir + limit_sl_dest: ignore symlinks if they are pointing outside of + the defined path + hardlink_dupes: hardlink duplicated pyc files + """ + ProcessPoolExecutor = None + if ddir is not None and (stripdir is not None or prependdir is not None): + raise ValueError(("Destination dir (ddir) cannot be used " + "in combination with stripdir or prependdir")) + if ddir is not None: + stripdir = dir + prependdir = ddir + ddir = None + if workers < 0: + raise ValueError('workers must be greater or equal to 0') + if workers != 1: + # Check if this is a system where ProcessPoolExecutor can function. + from concurrent.futures.process import _check_system_limits + try: + _check_system_limits() + except NotImplementedError: + workers = 1 + else: + from concurrent.futures import ProcessPoolExecutor + if maxlevels is None: + maxlevels = sys.getrecursionlimit() + files = _walk_dir(dir, quiet=quiet, maxlevels=maxlevels) + success = True + if workers != 1 and ProcessPoolExecutor is not None: + # If workers == 0, let ProcessPoolExecutor choose + workers = workers or None + with ProcessPoolExecutor(max_workers=workers) as executor: + results = executor.map(partial(compile_file, + ddir=ddir, force=force, + rx=rx, quiet=quiet, + legacy=legacy, + optimize=optimize, + invalidation_mode=invalidation_mode, + stripdir=stripdir, + prependdir=prependdir, + limit_sl_dest=limit_sl_dest, + hardlink_dupes=hardlink_dupes), + files) + success = min(results, default=True) + else: + for file in files: + if not compile_file(file, ddir, force, rx, quiet, + legacy, optimize, invalidation_mode, + stripdir=stripdir, prependdir=prependdir, + limit_sl_dest=limit_sl_dest, + hardlink_dupes=hardlink_dupes): + success = False + return success + +def compile_file(fullname, ddir=None, force=False, rx=None, quiet=0, + legacy=False, optimize=-1, + invalidation_mode=None, *, stripdir=None, prependdir=None, + limit_sl_dest=None, hardlink_dupes=False): + """Byte-compile one file. + + Arguments (only fullname is required): + + fullname: the file to byte-compile + ddir: if given, the directory name compiled in to the + byte-code file. + force: if True, force compilation, even if timestamps are up-to-date + quiet: full output with False or 0, errors only with 1, + no output with 2 + legacy: if True, produce legacy pyc paths instead of PEP 3147 paths + optimize: int or list of optimization levels or -1 for level of + the interpreter. Multiple levels leads to multiple compiled + files each with one optimization level. + invalidation_mode: how the up-to-dateness of the pyc will be checked + stripdir: part of path to left-strip from source file path + prependdir: path to prepend to beginning of original file path, applied + after stripdir + limit_sl_dest: ignore symlinks if they are pointing outside of + the defined path. + hardlink_dupes: hardlink duplicated pyc files + """ + + if ddir is not None and (stripdir is not None or prependdir is not None): + raise ValueError(("Destination dir (ddir) cannot be used " + "in combination with stripdir or prependdir")) + + success = True + fullname = os.fspath(fullname) + stripdir = os.fspath(stripdir) if stripdir is not None else None + name = os.path.basename(fullname) + + dfile = None + + if ddir is not None: + dfile = os.path.join(ddir, name) + + if stripdir is not None: + fullname_parts = fullname.split(os.path.sep) + stripdir_parts = stripdir.split(os.path.sep) + ddir_parts = list(fullname_parts) + + for spart, opart in zip(stripdir_parts, fullname_parts): + if spart == opart: + ddir_parts.remove(spart) + + dfile = os.path.join(*ddir_parts) + + if prependdir is not None: + if dfile is None: + dfile = os.path.join(prependdir, fullname) + else: + dfile = os.path.join(prependdir, dfile) + + if isinstance(optimize, int): + optimize = [optimize] + + # Use set() to remove duplicates. + # Use sorted() to create pyc files in a deterministic order. + optimize = sorted(set(optimize)) + + if hardlink_dupes and len(optimize) < 2: + raise ValueError("Hardlinking of duplicated bytecode makes sense " + "only for more than one optimization level") + + if rx is not None: + mo = rx.search(fullname) + if mo: + return success + + if limit_sl_dest is not None and os.path.islink(fullname): + if Path(limit_sl_dest).resolve() not in Path(fullname).resolve().parents: + return success + + opt_cfiles = {} + + if os.path.isfile(fullname): + for opt_level in optimize: + if legacy: + opt_cfiles[opt_level] = fullname + 'c' + else: + if opt_level >= 0: + opt = opt_level if opt_level >= 1 else '' + cfile = (importlib.util.cache_from_source( + fullname, optimization=opt)) + opt_cfiles[opt_level] = cfile + else: + cfile = importlib.util.cache_from_source(fullname) + opt_cfiles[opt_level] = cfile + + head, tail = name[:-3], name[-3:] + if tail == '.py': + if not force: + try: + mtime = int(os.stat(fullname).st_mtime) + expect = struct.pack('<4sLL', importlib.util.MAGIC_NUMBER, + 0, mtime & 0xFFFF_FFFF) + for cfile in opt_cfiles.values(): + with open(cfile, 'rb') as chandle: + actual = chandle.read(12) + if expect != actual: + break + else: + return success + except OSError: + pass + if not quiet: + print('Compiling {!r}...'.format(fullname)) + try: + for index, opt_level in enumerate(optimize): + cfile = opt_cfiles[opt_level] + ok = py_compile.compile(fullname, cfile, dfile, True, + optimize=opt_level, + invalidation_mode=invalidation_mode) + if index > 0 and hardlink_dupes: + previous_cfile = opt_cfiles[optimize[index - 1]] + if filecmp.cmp(cfile, previous_cfile, shallow=False): + os.unlink(cfile) + os.link(previous_cfile, cfile) + except py_compile.PyCompileError as err: + success = False + if quiet >= 2: + return success + elif quiet: + print('*** Error compiling {!r}...'.format(fullname)) + else: + print('*** ', end='') + # escape non-printable characters in msg + encoding = sys.stdout.encoding or sys.getdefaultencoding() + msg = err.msg.encode(encoding, errors='backslashreplace').decode(encoding) + print(msg) + except (SyntaxError, UnicodeError, OSError) as e: + success = False + if quiet >= 2: + return success + elif quiet: + print('*** Error compiling {!r}...'.format(fullname)) + else: + print('*** ', end='') + print(e.__class__.__name__ + ':', e) + else: + if ok == 0: + success = False + return success + +def compile_path(skip_curdir=1, maxlevels=0, force=False, quiet=0, + legacy=False, optimize=-1, + invalidation_mode=None): + """Byte-compile all module on sys.path. + + Arguments (all optional): + + skip_curdir: if true, skip current directory (default True) + maxlevels: max recursion level (default 0) + force: as for compile_dir() (default False) + quiet: as for compile_dir() (default 0) + legacy: as for compile_dir() (default False) + optimize: as for compile_dir() (default -1) + invalidation_mode: as for compiler_dir() + """ + success = True + for dir in sys.path: + if (not dir or dir == os.curdir) and skip_curdir: + if quiet < 2: + print('Skipping current directory') + else: + success = success and compile_dir( + dir, + maxlevels, + None, + force, + quiet=quiet, + legacy=legacy, + optimize=optimize, + invalidation_mode=invalidation_mode, + ) + return success + + +def main(): + """Script main program.""" + import argparse + + parser = argparse.ArgumentParser( + description='Utilities to support installing Python libraries.') + parser.add_argument('-l', action='store_const', const=0, + default=None, dest='maxlevels', + help="don't recurse into subdirectories") + parser.add_argument('-r', type=int, dest='recursion', + help=('control the maximum recursion level. ' + 'if `-l` and `-r` options are specified, ' + 'then `-r` takes precedence.')) + parser.add_argument('-f', action='store_true', dest='force', + help='force rebuild even if timestamps are up to date') + parser.add_argument('-q', action='count', dest='quiet', default=0, + help='output only error messages; -qq will suppress ' + 'the error messages as well.') + parser.add_argument('-b', action='store_true', dest='legacy', + help='use legacy (pre-PEP3147) compiled file locations') + parser.add_argument('-d', metavar='DESTDIR', dest='ddir', default=None, + help=('directory to prepend to file paths for use in ' + 'compile-time tracebacks and in runtime ' + 'tracebacks in cases where the source file is ' + 'unavailable')) + parser.add_argument('-s', metavar='STRIPDIR', dest='stripdir', + default=None, + help=('part of path to left-strip from path ' + 'to source file - for example buildroot. ' + '`-d` and `-s` options cannot be ' + 'specified together.')) + parser.add_argument('-p', metavar='PREPENDDIR', dest='prependdir', + default=None, + help=('path to add as prefix to path ' + 'to source file - for example / to make ' + 'it absolute when some part is removed ' + 'by `-s` option. ' + '`-d` and `-p` options cannot be ' + 'specified together.')) + parser.add_argument('-x', metavar='REGEXP', dest='rx', default=None, + help=('skip files matching the regular expression; ' + 'the regexp is searched for in the full path ' + 'of each file considered for compilation')) + parser.add_argument('-i', metavar='FILE', dest='flist', + help=('add all the files and directories listed in ' + 'FILE to the list considered for compilation; ' + 'if "-", names are read from stdin')) + parser.add_argument('compile_dest', metavar='FILE|DIR', nargs='*', + help=('zero or more file and directory names ' + 'to compile; if no arguments given, defaults ' + 'to the equivalent of -l sys.path')) + parser.add_argument('-j', '--workers', default=1, + type=int, help='Run compileall concurrently') + invalidation_modes = [mode.name.lower().replace('_', '-') + for mode in py_compile.PycInvalidationMode] + parser.add_argument('--invalidation-mode', + choices=sorted(invalidation_modes), + help=('set .pyc invalidation mode; defaults to ' + '"checked-hash" if the SOURCE_DATE_EPOCH ' + 'environment variable is set, and ' + '"timestamp" otherwise.')) + parser.add_argument('-o', action='append', type=int, dest='opt_levels', + help=('Optimization levels to run compilation with. ' + 'Default is -1 which uses the optimization level ' + 'of the Python interpreter itself (see -O).')) + parser.add_argument('-e', metavar='DIR', dest='limit_sl_dest', + help='Ignore symlinks pointing outsite of the DIR') + parser.add_argument('--hardlink-dupes', action='store_true', + dest='hardlink_dupes', + help='Hardlink duplicated pyc files') + + args = parser.parse_args() + compile_dests = args.compile_dest + + if args.rx: + import re + args.rx = re.compile(args.rx) + + if args.limit_sl_dest == "": + args.limit_sl_dest = None + + if args.recursion is not None: + maxlevels = args.recursion + else: + maxlevels = args.maxlevels + + if args.opt_levels is None: + args.opt_levels = [-1] + + if len(args.opt_levels) == 1 and args.hardlink_dupes: + parser.error(("Hardlinking of duplicated bytecode makes sense " + "only for more than one optimization level.")) + + if args.ddir is not None and ( + args.stripdir is not None or args.prependdir is not None + ): + parser.error("-d cannot be used in combination with -s or -p") + + # if flist is provided then load it + if args.flist: + try: + with (sys.stdin if args.flist=='-' else + open(args.flist, encoding="utf-8")) as f: + for line in f: + compile_dests.append(line.strip()) + except OSError: + if args.quiet < 2: + print("Error reading file list {}".format(args.flist)) + return False + + if args.invalidation_mode: + ivl_mode = args.invalidation_mode.replace('-', '_').upper() + invalidation_mode = py_compile.PycInvalidationMode[ivl_mode] + else: + invalidation_mode = None + + success = True + try: + if compile_dests: + for dest in compile_dests: + if os.path.isfile(dest): + if not compile_file(dest, args.ddir, args.force, args.rx, + args.quiet, args.legacy, + invalidation_mode=invalidation_mode, + stripdir=args.stripdir, + prependdir=args.prependdir, + optimize=args.opt_levels, + limit_sl_dest=args.limit_sl_dest, + hardlink_dupes=args.hardlink_dupes): + success = False + else: + if not compile_dir(dest, maxlevels, args.ddir, + args.force, args.rx, args.quiet, + args.legacy, workers=args.workers, + invalidation_mode=invalidation_mode, + stripdir=args.stripdir, + prependdir=args.prependdir, + optimize=args.opt_levels, + limit_sl_dest=args.limit_sl_dest, + hardlink_dupes=args.hardlink_dupes): + success = False + return success + else: + return compile_path(legacy=args.legacy, force=args.force, + quiet=args.quiet, + invalidation_mode=invalidation_mode) + except KeyboardInterrupt: + if args.quiet < 2: + print("\n[interrupted]") + return False + return True + + +if __name__ == '__main__': + exit_status = int(not main()) + sys.exit(exit_status) diff --git a/Lib/concurrent/__init__.py b/Lib/concurrent/__init__.py new file mode 100644 index 0000000000..196d378857 --- /dev/null +++ b/Lib/concurrent/__init__.py @@ -0,0 +1 @@ +# This directory is a Python package. diff --git a/Lib/concurrent/futures/__init__.py b/Lib/concurrent/futures/__init__.py new file mode 100644 index 0000000000..d746aeac50 --- /dev/null +++ b/Lib/concurrent/futures/__init__.py @@ -0,0 +1,53 @@ +# Copyright 2009 Brian Quinlan. All Rights Reserved. +# Licensed to PSF under a Contributor Agreement. + +"""Execute computations asynchronously using threads or processes.""" + +__author__ = 'Brian Quinlan (brian@sweetapp.com)' + +from concurrent.futures._base import (FIRST_COMPLETED, + FIRST_EXCEPTION, + ALL_COMPLETED, + CancelledError, + TimeoutError, + InvalidStateError, + BrokenExecutor, + Future, + Executor, + wait, + as_completed) + +__all__ = ( + 'FIRST_COMPLETED', + 'FIRST_EXCEPTION', + 'ALL_COMPLETED', + 'CancelledError', + 'TimeoutError', + 'BrokenExecutor', + 'Future', + 'Executor', + 'wait', + 'as_completed', + 'ProcessPoolExecutor', + 'ThreadPoolExecutor', +) + + +def __dir__(): + return __all__ + ('__author__', '__doc__') + + +def __getattr__(name): + global ProcessPoolExecutor, ThreadPoolExecutor + + if name == 'ProcessPoolExecutor': + from .process import ProcessPoolExecutor as pe + ProcessPoolExecutor = pe + return pe + + if name == 'ThreadPoolExecutor': + from .thread import ThreadPoolExecutor as te + ThreadPoolExecutor = te + return te + + raise AttributeError(f"module {__name__} has no attribute {name}") diff --git a/Lib/concurrent/futures/_base.py b/Lib/concurrent/futures/_base.py new file mode 100644 index 0000000000..cf119ac643 --- /dev/null +++ b/Lib/concurrent/futures/_base.py @@ -0,0 +1,644 @@ +# Copyright 2009 Brian Quinlan. All Rights Reserved. +# Licensed to PSF under a Contributor Agreement. + +__author__ = 'Brian Quinlan (brian@sweetapp.com)' + +import collections +import logging +import threading +import time +import types + +FIRST_COMPLETED = 'FIRST_COMPLETED' +FIRST_EXCEPTION = 'FIRST_EXCEPTION' +ALL_COMPLETED = 'ALL_COMPLETED' +_AS_COMPLETED = '_AS_COMPLETED' + +# Possible future states (for internal use by the futures package). +PENDING = 'PENDING' +RUNNING = 'RUNNING' +# The future was cancelled by the user... +CANCELLED = 'CANCELLED' +# ...and _Waiter.add_cancelled() was called by a worker. +CANCELLED_AND_NOTIFIED = 'CANCELLED_AND_NOTIFIED' +FINISHED = 'FINISHED' + +_FUTURE_STATES = [ + PENDING, + RUNNING, + CANCELLED, + CANCELLED_AND_NOTIFIED, + FINISHED +] + +_STATE_TO_DESCRIPTION_MAP = { + PENDING: "pending", + RUNNING: "running", + CANCELLED: "cancelled", + CANCELLED_AND_NOTIFIED: "cancelled", + FINISHED: "finished" +} + +# Logger for internal use by the futures package. +LOGGER = logging.getLogger("concurrent.futures") + +class Error(Exception): + """Base class for all future-related exceptions.""" + pass + +class CancelledError(Error): + """The Future was cancelled.""" + pass + +class TimeoutError(Error): + """The operation exceeded the given deadline.""" + pass + +class InvalidStateError(Error): + """The operation is not allowed in this state.""" + pass + +class _Waiter(object): + """Provides the event that wait() and as_completed() block on.""" + def __init__(self): + self.event = threading.Event() + self.finished_futures = [] + + def add_result(self, future): + self.finished_futures.append(future) + + def add_exception(self, future): + self.finished_futures.append(future) + + def add_cancelled(self, future): + self.finished_futures.append(future) + +class _AsCompletedWaiter(_Waiter): + """Used by as_completed().""" + + def __init__(self): + super(_AsCompletedWaiter, self).__init__() + self.lock = threading.Lock() + + def add_result(self, future): + with self.lock: + super(_AsCompletedWaiter, self).add_result(future) + self.event.set() + + def add_exception(self, future): + with self.lock: + super(_AsCompletedWaiter, self).add_exception(future) + self.event.set() + + def add_cancelled(self, future): + with self.lock: + super(_AsCompletedWaiter, self).add_cancelled(future) + self.event.set() + +class _FirstCompletedWaiter(_Waiter): + """Used by wait(return_when=FIRST_COMPLETED).""" + + def add_result(self, future): + super().add_result(future) + self.event.set() + + def add_exception(self, future): + super().add_exception(future) + self.event.set() + + def add_cancelled(self, future): + super().add_cancelled(future) + self.event.set() + +class _AllCompletedWaiter(_Waiter): + """Used by wait(return_when=FIRST_EXCEPTION and ALL_COMPLETED).""" + + def __init__(self, num_pending_calls, stop_on_exception): + self.num_pending_calls = num_pending_calls + self.stop_on_exception = stop_on_exception + self.lock = threading.Lock() + super().__init__() + + def _decrement_pending_calls(self): + with self.lock: + self.num_pending_calls -= 1 + if not self.num_pending_calls: + self.event.set() + + def add_result(self, future): + super().add_result(future) + self._decrement_pending_calls() + + def add_exception(self, future): + super().add_exception(future) + if self.stop_on_exception: + self.event.set() + else: + self._decrement_pending_calls() + + def add_cancelled(self, future): + super().add_cancelled(future) + self._decrement_pending_calls() + +class _AcquireFutures(object): + """A context manager that does an ordered acquire of Future conditions.""" + + def __init__(self, futures): + self.futures = sorted(futures, key=id) + + def __enter__(self): + for future in self.futures: + future._condition.acquire() + + def __exit__(self, *args): + for future in self.futures: + future._condition.release() + +def _create_and_install_waiters(fs, return_when): + if return_when == _AS_COMPLETED: + waiter = _AsCompletedWaiter() + elif return_when == FIRST_COMPLETED: + waiter = _FirstCompletedWaiter() + else: + pending_count = sum( + f._state not in [CANCELLED_AND_NOTIFIED, FINISHED] for f in fs) + + if return_when == FIRST_EXCEPTION: + waiter = _AllCompletedWaiter(pending_count, stop_on_exception=True) + elif return_when == ALL_COMPLETED: + waiter = _AllCompletedWaiter(pending_count, stop_on_exception=False) + else: + raise ValueError("Invalid return condition: %r" % return_when) + + for f in fs: + f._waiters.append(waiter) + + return waiter + + +def _yield_finished_futures(fs, waiter, ref_collect): + """ + Iterate on the list *fs*, yielding finished futures one by one in + reverse order. + Before yielding a future, *waiter* is removed from its waiters + and the future is removed from each set in the collection of sets + *ref_collect*. + + The aim of this function is to avoid keeping stale references after + the future is yielded and before the iterator resumes. + """ + while fs: + f = fs[-1] + for futures_set in ref_collect: + futures_set.remove(f) + with f._condition: + f._waiters.remove(waiter) + del f + # Careful not to keep a reference to the popped value + yield fs.pop() + + +def as_completed(fs, timeout=None): + """An iterator over the given futures that yields each as it completes. + + Args: + fs: The sequence of Futures (possibly created by different Executors) to + iterate over. + timeout: The maximum number of seconds to wait. If None, then there + is no limit on the wait time. + + Returns: + An iterator that yields the given Futures as they complete (finished or + cancelled). If any given Futures are duplicated, they will be returned + once. + + Raises: + TimeoutError: If the entire result iterator could not be generated + before the given timeout. + """ + if timeout is not None: + end_time = timeout + time.monotonic() + + fs = set(fs) + total_futures = len(fs) + with _AcquireFutures(fs): + finished = set( + f for f in fs + if f._state in [CANCELLED_AND_NOTIFIED, FINISHED]) + pending = fs - finished + waiter = _create_and_install_waiters(fs, _AS_COMPLETED) + finished = list(finished) + try: + yield from _yield_finished_futures(finished, waiter, + ref_collect=(fs,)) + + while pending: + if timeout is None: + wait_timeout = None + else: + wait_timeout = end_time - time.monotonic() + if wait_timeout < 0: + raise TimeoutError( + '%d (of %d) futures unfinished' % ( + len(pending), total_futures)) + + waiter.event.wait(wait_timeout) + + with waiter.lock: + finished = waiter.finished_futures + waiter.finished_futures = [] + waiter.event.clear() + + # reverse to keep finishing order + finished.reverse() + yield from _yield_finished_futures(finished, waiter, + ref_collect=(fs, pending)) + + finally: + # Remove waiter from unfinished futures + for f in fs: + with f._condition: + f._waiters.remove(waiter) + +DoneAndNotDoneFutures = collections.namedtuple( + 'DoneAndNotDoneFutures', 'done not_done') +def wait(fs, timeout=None, return_when=ALL_COMPLETED): + """Wait for the futures in the given sequence to complete. + + Args: + fs: The sequence of Futures (possibly created by different Executors) to + wait upon. + timeout: The maximum number of seconds to wait. If None, then there + is no limit on the wait time. + return_when: Indicates when this function should return. The options + are: + + FIRST_COMPLETED - Return when any future finishes or is + cancelled. + FIRST_EXCEPTION - Return when any future finishes by raising an + exception. If no future raises an exception + then it is equivalent to ALL_COMPLETED. + ALL_COMPLETED - Return when all futures finish or are cancelled. + + Returns: + A named 2-tuple of sets. The first set, named 'done', contains the + futures that completed (is finished or cancelled) before the wait + completed. The second set, named 'not_done', contains uncompleted + futures. Duplicate futures given to *fs* are removed and will be + returned only once. + """ + fs = set(fs) + with _AcquireFutures(fs): + done = {f for f in fs + if f._state in [CANCELLED_AND_NOTIFIED, FINISHED]} + not_done = fs - done + if (return_when == FIRST_COMPLETED) and done: + return DoneAndNotDoneFutures(done, not_done) + elif (return_when == FIRST_EXCEPTION) and done: + if any(f for f in done + if not f.cancelled() and f.exception() is not None): + return DoneAndNotDoneFutures(done, not_done) + + if len(done) == len(fs): + return DoneAndNotDoneFutures(done, not_done) + + waiter = _create_and_install_waiters(fs, return_when) + + waiter.event.wait(timeout) + for f in fs: + with f._condition: + f._waiters.remove(waiter) + + done.update(waiter.finished_futures) + return DoneAndNotDoneFutures(done, fs - done) + +class Future(object): + """Represents the result of an asynchronous computation.""" + + def __init__(self): + """Initializes the future. Should not be called by clients.""" + self._condition = threading.Condition() + self._state = PENDING + self._result = None + self._exception = None + self._waiters = [] + self._done_callbacks = [] + + def _invoke_callbacks(self): + for callback in self._done_callbacks: + try: + callback(self) + except Exception: + LOGGER.exception('exception calling callback for %r', self) + + def __repr__(self): + with self._condition: + if self._state == FINISHED: + if self._exception: + return '<%s at %#x state=%s raised %s>' % ( + self.__class__.__name__, + id(self), + _STATE_TO_DESCRIPTION_MAP[self._state], + self._exception.__class__.__name__) + else: + return '<%s at %#x state=%s returned %s>' % ( + self.__class__.__name__, + id(self), + _STATE_TO_DESCRIPTION_MAP[self._state], + self._result.__class__.__name__) + return '<%s at %#x state=%s>' % ( + self.__class__.__name__, + id(self), + _STATE_TO_DESCRIPTION_MAP[self._state]) + + def cancel(self): + """Cancel the future if possible. + + Returns True if the future was cancelled, False otherwise. A future + cannot be cancelled if it is running or has already completed. + """ + with self._condition: + if self._state in [RUNNING, FINISHED]: + return False + + if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]: + return True + + self._state = CANCELLED + self._condition.notify_all() + + self._invoke_callbacks() + return True + + def cancelled(self): + """Return True if the future was cancelled.""" + with self._condition: + return self._state in [CANCELLED, CANCELLED_AND_NOTIFIED] + + def running(self): + """Return True if the future is currently executing.""" + with self._condition: + return self._state == RUNNING + + def done(self): + """Return True if the future was cancelled or finished executing.""" + with self._condition: + return self._state in [CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED] + + def __get_result(self): + if self._exception: + try: + raise self._exception + finally: + # Break a reference cycle with the exception in self._exception + self = None + else: + return self._result + + def add_done_callback(self, fn): + """Attaches a callable that will be called when the future finishes. + + Args: + fn: A callable that will be called with this future as its only + argument when the future completes or is cancelled. The callable + will always be called by a thread in the same process in which + it was added. If the future has already completed or been + cancelled then the callable will be called immediately. These + callables are called in the order that they were added. + """ + with self._condition: + if self._state not in [CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED]: + self._done_callbacks.append(fn) + return + try: + fn(self) + except Exception: + LOGGER.exception('exception calling callback for %r', self) + + def result(self, timeout=None): + """Return the result of the call that the future represents. + + Args: + timeout: The number of seconds to wait for the result if the future + isn't done. If None, then there is no limit on the wait time. + + Returns: + The result of the call that the future represents. + + Raises: + CancelledError: If the future was cancelled. + TimeoutError: If the future didn't finish executing before the given + timeout. + Exception: If the call raised then that exception will be raised. + """ + try: + with self._condition: + if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]: + raise CancelledError() + elif self._state == FINISHED: + return self.__get_result() + + self._condition.wait(timeout) + + if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]: + raise CancelledError() + elif self._state == FINISHED: + return self.__get_result() + else: + raise TimeoutError() + finally: + # Break a reference cycle with the exception in self._exception + self = None + + def exception(self, timeout=None): + """Return the exception raised by the call that the future represents. + + Args: + timeout: The number of seconds to wait for the exception if the + future isn't done. If None, then there is no limit on the wait + time. + + Returns: + The exception raised by the call that the future represents or None + if the call completed without raising. + + Raises: + CancelledError: If the future was cancelled. + TimeoutError: If the future didn't finish executing before the given + timeout. + """ + + with self._condition: + if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]: + raise CancelledError() + elif self._state == FINISHED: + return self._exception + + self._condition.wait(timeout) + + if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]: + raise CancelledError() + elif self._state == FINISHED: + return self._exception + else: + raise TimeoutError() + + # The following methods should only be used by Executors and in tests. + def set_running_or_notify_cancel(self): + """Mark the future as running or process any cancel notifications. + + Should only be used by Executor implementations and unit tests. + + If the future has been cancelled (cancel() was called and returned + True) then any threads waiting on the future completing (though calls + to as_completed() or wait()) are notified and False is returned. + + If the future was not cancelled then it is put in the running state + (future calls to running() will return True) and True is returned. + + This method should be called by Executor implementations before + executing the work associated with this future. If this method returns + False then the work should not be executed. + + Returns: + False if the Future was cancelled, True otherwise. + + Raises: + RuntimeError: if this method was already called or if set_result() + or set_exception() was called. + """ + with self._condition: + if self._state == CANCELLED: + self._state = CANCELLED_AND_NOTIFIED + for waiter in self._waiters: + waiter.add_cancelled(self) + # self._condition.notify_all() is not necessary because + # self.cancel() triggers a notification. + return False + elif self._state == PENDING: + self._state = RUNNING + return True + else: + LOGGER.critical('Future %s in unexpected state: %s', + id(self), + self._state) + raise RuntimeError('Future in unexpected state') + + def set_result(self, result): + """Sets the return value of work associated with the future. + + Should only be used by Executor implementations and unit tests. + """ + with self._condition: + if self._state in {CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED}: + raise InvalidStateError('{}: {!r}'.format(self._state, self)) + self._result = result + self._state = FINISHED + for waiter in self._waiters: + waiter.add_result(self) + self._condition.notify_all() + self._invoke_callbacks() + + def set_exception(self, exception): + """Sets the result of the future as being the given exception. + + Should only be used by Executor implementations and unit tests. + """ + with self._condition: + if self._state in {CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED}: + raise InvalidStateError('{}: {!r}'.format(self._state, self)) + self._exception = exception + self._state = FINISHED + for waiter in self._waiters: + waiter.add_exception(self) + self._condition.notify_all() + self._invoke_callbacks() + + __class_getitem__ = classmethod(types.GenericAlias) + +class Executor(object): + """This is an abstract base class for concrete asynchronous executors.""" + + def submit(self, fn, /, *args, **kwargs): + """Submits a callable to be executed with the given arguments. + + Schedules the callable to be executed as fn(*args, **kwargs) and returns + a Future instance representing the execution of the callable. + + Returns: + A Future representing the given call. + """ + raise NotImplementedError() + + def map(self, fn, *iterables, timeout=None, chunksize=1): + """Returns an iterator equivalent to map(fn, iter). + + Args: + fn: A callable that will take as many arguments as there are + passed iterables. + timeout: The maximum number of seconds to wait. If None, then there + is no limit on the wait time. + chunksize: The size of the chunks the iterable will be broken into + before being passed to a child process. This argument is only + used by ProcessPoolExecutor; it is ignored by + ThreadPoolExecutor. + + Returns: + An iterator equivalent to: map(func, *iterables) but the calls may + be evaluated out-of-order. + + Raises: + TimeoutError: If the entire result iterator could not be generated + before the given timeout. + Exception: If fn(*args) raises for any values. + """ + if timeout is not None: + end_time = timeout + time.monotonic() + + fs = [self.submit(fn, *args) for args in zip(*iterables)] + + # Yield must be hidden in closure so that the futures are submitted + # before the first iterator value is required. + def result_iterator(): + try: + # reverse to keep finishing order + fs.reverse() + while fs: + # Careful not to keep a reference to the popped future + if timeout is None: + yield fs.pop().result() + else: + yield fs.pop().result(end_time - time.monotonic()) + finally: + for future in fs: + future.cancel() + return result_iterator() + + def shutdown(self, wait=True, *, cancel_futures=False): + """Clean-up the resources associated with the Executor. + + It is safe to call this method several times. Otherwise, no other + methods can be called after this one. + + Args: + wait: If True then shutdown will not return until all running + futures have finished executing and the resources used by the + executor have been reclaimed. + cancel_futures: If True then shutdown will cancel all pending + futures. Futures that are completed or running will not be + cancelled. + """ + pass + + def __enter__(self): + return self + + def __exit__(self, exc_type, exc_val, exc_tb): + self.shutdown(wait=True) + return False + + +class BrokenExecutor(RuntimeError): + """ + Raised when a executor has become non-functional after a severe failure. + """ diff --git a/Lib/concurrent/futures/process.py b/Lib/concurrent/futures/process.py new file mode 100644 index 0000000000..57941e485d --- /dev/null +++ b/Lib/concurrent/futures/process.py @@ -0,0 +1,786 @@ +# Copyright 2009 Brian Quinlan. All Rights Reserved. +# Licensed to PSF under a Contributor Agreement. + +"""Implements ProcessPoolExecutor. + +The following diagram and text describe the data-flow through the system: + +|======================= In-process =====================|== Out-of-process ==| + ++----------+ +----------+ +--------+ +-----------+ +---------+ +| | => | Work Ids | | | | Call Q | | Process | +| | +----------+ | | +-----------+ | Pool | +| | | ... | | | | ... | +---------+ +| | | 6 | => | | => | 5, call() | => | | +| | | 7 | | | | ... | | | +| Process | | ... | | Local | +-----------+ | Process | +| Pool | +----------+ | Worker | | #1..n | +| Executor | | Thread | | | +| | +----------- + | | +-----------+ | | +| | <=> | Work Items | <=> | | <= | Result Q | <= | | +| | +------------+ | | +-----------+ | | +| | | 6: call() | | | | ... | | | +| | | future | | | | 4, result | | | +| | | ... | | | | 3, except | | | ++----------+ +------------+ +--------+ +-----------+ +---------+ + +Executor.submit() called: +- creates a uniquely numbered _WorkItem and adds it to the "Work Items" dict +- adds the id of the _WorkItem to the "Work Ids" queue + +Local worker thread: +- reads work ids from the "Work Ids" queue and looks up the corresponding + WorkItem from the "Work Items" dict: if the work item has been cancelled then + it is simply removed from the dict, otherwise it is repackaged as a + _CallItem and put in the "Call Q". New _CallItems are put in the "Call Q" + until "Call Q" is full. NOTE: the size of the "Call Q" is kept small because + calls placed in the "Call Q" can no longer be cancelled with Future.cancel(). +- reads _ResultItems from "Result Q", updates the future stored in the + "Work Items" dict and deletes the dict entry + +Process #1..n: +- reads _CallItems from "Call Q", executes the calls, and puts the resulting + _ResultItems in "Result Q" +""" + +__author__ = 'Brian Quinlan (brian@sweetapp.com)' + +import os +from concurrent.futures import _base +import queue +import multiprocessing as mp +import multiprocessing.connection +from multiprocessing.queues import Queue +import threading +import weakref +from functools import partial +import itertools +import sys +import traceback + + +_threads_wakeups = weakref.WeakKeyDictionary() +_global_shutdown = False + + +class _ThreadWakeup: + def __init__(self): + self._closed = False + self._reader, self._writer = mp.Pipe(duplex=False) + + def close(self): + if not self._closed: + self._closed = True + self._writer.close() + self._reader.close() + + def wakeup(self): + if not self._closed: + self._writer.send_bytes(b"") + + def clear(self): + if not self._closed: + while self._reader.poll(): + self._reader.recv_bytes() + + +def _python_exit(): + global _global_shutdown + _global_shutdown = True + items = list(_threads_wakeups.items()) + for _, thread_wakeup in items: + # call not protected by ProcessPoolExecutor._shutdown_lock + thread_wakeup.wakeup() + for t, _ in items: + t.join() + +# Register for `_python_exit()` to be called just before joining all +# non-daemon threads. This is used instead of `atexit.register()` for +# compatibility with subinterpreters, which no longer support daemon threads. +# See bpo-39812 for context. +threading._register_atexit(_python_exit) + +# Controls how many more calls than processes will be queued in the call queue. +# A smaller number will mean that processes spend more time idle waiting for +# work while a larger number will make Future.cancel() succeed less frequently +# (Futures in the call queue cannot be cancelled). +EXTRA_QUEUED_CALLS = 1 + + +# On Windows, WaitForMultipleObjects is used to wait for processes to finish. +# It can wait on, at most, 63 objects. There is an overhead of two objects: +# - the result queue reader +# - the thread wakeup reader +_MAX_WINDOWS_WORKERS = 63 - 2 + +# Hack to embed stringification of remote traceback in local traceback + +class _RemoteTraceback(Exception): + def __init__(self, tb): + self.tb = tb + def __str__(self): + return self.tb + +class _ExceptionWithTraceback: + def __init__(self, exc, tb): + tb = traceback.format_exception(type(exc), exc, tb) + tb = ''.join(tb) + self.exc = exc + # Traceback object needs to be garbage-collected as its frames + # contain references to all the objects in the exception scope + self.exc.__traceback__ = None + self.tb = '\n"""\n%s"""' % tb + def __reduce__(self): + return _rebuild_exc, (self.exc, self.tb) + +def _rebuild_exc(exc, tb): + exc.__cause__ = _RemoteTraceback(tb) + return exc + +class _WorkItem(object): + def __init__(self, future, fn, args, kwargs): + self.future = future + self.fn = fn + self.args = args + self.kwargs = kwargs + +class _ResultItem(object): + def __init__(self, work_id, exception=None, result=None): + self.work_id = work_id + self.exception = exception + self.result = result + +class _CallItem(object): + def __init__(self, work_id, fn, args, kwargs): + self.work_id = work_id + self.fn = fn + self.args = args + self.kwargs = kwargs + + +class _SafeQueue(Queue): + """Safe Queue set exception to the future object linked to a job""" + def __init__(self, max_size=0, *, ctx, pending_work_items, shutdown_lock, + thread_wakeup): + self.pending_work_items = pending_work_items + self.shutdown_lock = shutdown_lock + self.thread_wakeup = thread_wakeup + super().__init__(max_size, ctx=ctx) + + def _on_queue_feeder_error(self, e, obj): + if isinstance(obj, _CallItem): + tb = traceback.format_exception(type(e), e, e.__traceback__) + e.__cause__ = _RemoteTraceback('\n"""\n{}"""'.format(''.join(tb))) + work_item = self.pending_work_items.pop(obj.work_id, None) + with self.shutdown_lock: + self.thread_wakeup.wakeup() + # work_item can be None if another process terminated. In this + # case, the executor_manager_thread fails all work_items + # with BrokenProcessPool + if work_item is not None: + work_item.future.set_exception(e) + else: + super()._on_queue_feeder_error(e, obj) + + +def _get_chunks(*iterables, chunksize): + """ Iterates over zip()ed iterables in chunks. """ + it = zip(*iterables) + while True: + chunk = tuple(itertools.islice(it, chunksize)) + if not chunk: + return + yield chunk + + +def _process_chunk(fn, chunk): + """ Processes a chunk of an iterable passed to map. + + Runs the function passed to map() on a chunk of the + iterable passed to map. + + This function is run in a separate process. + + """ + return [fn(*args) for args in chunk] + + +def _sendback_result(result_queue, work_id, result=None, exception=None): + """Safely send back the given result or exception""" + try: + result_queue.put(_ResultItem(work_id, result=result, + exception=exception)) + except BaseException as e: + exc = _ExceptionWithTraceback(e, e.__traceback__) + result_queue.put(_ResultItem(work_id, exception=exc)) + + +def _process_worker(call_queue, result_queue, initializer, initargs): + """Evaluates calls from call_queue and places the results in result_queue. + + This worker is run in a separate process. + + Args: + call_queue: A ctx.Queue of _CallItems that will be read and + evaluated by the worker. + result_queue: A ctx.Queue of _ResultItems that will written + to by the worker. + initializer: A callable initializer, or None + initargs: A tuple of args for the initializer + """ + if initializer is not None: + try: + initializer(*initargs) + except BaseException: + _base.LOGGER.critical('Exception in initializer:', exc_info=True) + # The parent will notice that the process stopped and + # mark the pool broken + return + while True: + call_item = call_queue.get(block=True) + if call_item is None: + # Wake up queue management thread + result_queue.put(os.getpid()) + return + try: + r = call_item.fn(*call_item.args, **call_item.kwargs) + except BaseException as e: + exc = _ExceptionWithTraceback(e, e.__traceback__) + _sendback_result(result_queue, call_item.work_id, exception=exc) + else: + _sendback_result(result_queue, call_item.work_id, result=r) + del r + + # Liberate the resource as soon as possible, to avoid holding onto + # open files or shared memory that is not needed anymore + del call_item + + +class _ExecutorManagerThread(threading.Thread): + """Manages the communication between this process and the worker processes. + + The manager is run in a local thread. + + Args: + executor: A reference to the ProcessPoolExecutor that owns + this thread. A weakref will be own by the manager as well as + references to internal objects used to introspect the state of + the executor. + """ + + def __init__(self, executor): + # Store references to necessary internals of the executor. + + # A _ThreadWakeup to allow waking up the queue_manager_thread from the + # main Thread and avoid deadlocks caused by permanently locked queues. + self.thread_wakeup = executor._executor_manager_thread_wakeup + self.shutdown_lock = executor._shutdown_lock + + # A weakref.ref to the ProcessPoolExecutor that owns this thread. Used + # to determine if the ProcessPoolExecutor has been garbage collected + # and that the manager can exit. + # When the executor gets garbage collected, the weakref callback + # will wake up the queue management thread so that it can terminate + # if there is no pending work item. + def weakref_cb(_, + thread_wakeup=self.thread_wakeup, + shutdown_lock=self.shutdown_lock): + mp.util.debug('Executor collected: triggering callback for' + ' QueueManager wakeup') + with shutdown_lock: + thread_wakeup.wakeup() + + self.executor_reference = weakref.ref(executor, weakref_cb) + + # A list of the ctx.Process instances used as workers. + self.processes = executor._processes + + # A ctx.Queue that will be filled with _CallItems derived from + # _WorkItems for processing by the process workers. + self.call_queue = executor._call_queue + + # A ctx.SimpleQueue of _ResultItems generated by the process workers. + self.result_queue = executor._result_queue + + # A queue.Queue of work ids e.g. Queue([5, 6, ...]). + self.work_ids_queue = executor._work_ids + + # A dict mapping work ids to _WorkItems e.g. + # {5: <_WorkItem...>, 6: <_WorkItem...>, ...} + self.pending_work_items = executor._pending_work_items + + super().__init__() + + def run(self): + # Main loop for the executor manager thread. + + while True: + self.add_call_item_to_queue() + + result_item, is_broken, cause = self.wait_result_broken_or_wakeup() + + if is_broken: + self.terminate_broken(cause) + return + if result_item is not None: + self.process_result_item(result_item) + # Delete reference to result_item to avoid keeping references + # while waiting on new results. + del result_item + + # attempt to increment idle process count + executor = self.executor_reference() + if executor is not None: + executor._idle_worker_semaphore.release() + del executor + + if self.is_shutting_down(): + self.flag_executor_shutting_down() + + # Since no new work items can be added, it is safe to shutdown + # this thread if there are no pending work items. + if not self.pending_work_items: + self.join_executor_internals() + return + + def add_call_item_to_queue(self): + # Fills call_queue with _WorkItems from pending_work_items. + # This function never blocks. + while True: + if self.call_queue.full(): + return + try: + work_id = self.work_ids_queue.get(block=False) + except queue.Empty: + return + else: + work_item = self.pending_work_items[work_id] + + if work_item.future.set_running_or_notify_cancel(): + self.call_queue.put(_CallItem(work_id, + work_item.fn, + work_item.args, + work_item.kwargs), + block=True) + else: + del self.pending_work_items[work_id] + continue + + def wait_result_broken_or_wakeup(self): + # Wait for a result to be ready in the result_queue while checking + # that all worker processes are still running, or for a wake up + # signal send. The wake up signals come either from new tasks being + # submitted, from the executor being shutdown/gc-ed, or from the + # shutdown of the python interpreter. + result_reader = self.result_queue._reader + assert not self.thread_wakeup._closed + wakeup_reader = self.thread_wakeup._reader + readers = [result_reader, wakeup_reader] + worker_sentinels = [p.sentinel for p in list(self.processes.values())] + ready = mp.connection.wait(readers + worker_sentinels) + + cause = None + is_broken = True + result_item = None + if result_reader in ready: + try: + result_item = result_reader.recv() + is_broken = False + except BaseException as e: + cause = traceback.format_exception(type(e), e, e.__traceback__) + + elif wakeup_reader in ready: + is_broken = False + + with self.shutdown_lock: + self.thread_wakeup.clear() + + return result_item, is_broken, cause + + def process_result_item(self, result_item): + # Process the received a result_item. This can be either the PID of a + # worker that exited gracefully or a _ResultItem + + if isinstance(result_item, int): + # Clean shutdown of a worker using its PID + # (avoids marking the executor broken) + assert self.is_shutting_down() + p = self.processes.pop(result_item) + p.join() + if not self.processes: + self.join_executor_internals() + return + else: + # Received a _ResultItem so mark the future as completed. + work_item = self.pending_work_items.pop(result_item.work_id, None) + # work_item can be None if another process terminated (see above) + if work_item is not None: + if result_item.exception: + work_item.future.set_exception(result_item.exception) + else: + work_item.future.set_result(result_item.result) + + def is_shutting_down(self): + # Check whether we should start shutting down the executor. + executor = self.executor_reference() + # No more work items can be added if: + # - The interpreter is shutting down OR + # - The executor that owns this worker has been collected OR + # - The executor that owns this worker has been shutdown. + return (_global_shutdown or executor is None + or executor._shutdown_thread) + + def terminate_broken(self, cause): + # Terminate the executor because it is in a broken state. The cause + # argument can be used to display more information on the error that + # lead the executor into becoming broken. + + # Mark the process pool broken so that submits fail right now. + executor = self.executor_reference() + if executor is not None: + executor._broken = ('A child process terminated ' + 'abruptly, the process pool is not ' + 'usable anymore') + executor._shutdown_thread = True + executor = None + + # All pending tasks are to be marked failed with the following + # BrokenProcessPool error + bpe = BrokenProcessPool("A process in the process pool was " + "terminated abruptly while the future was " + "running or pending.") + if cause is not None: + bpe.__cause__ = _RemoteTraceback( + f"\n'''\n{''.join(cause)}'''") + + # Mark pending tasks as failed. + for work_id, work_item in self.pending_work_items.items(): + work_item.future.set_exception(bpe) + # Delete references to object. See issue16284 + del work_item + self.pending_work_items.clear() + + # Terminate remaining workers forcibly: the queues or their + # locks may be in a dirty state and block forever. + for p in self.processes.values(): + p.terminate() + + # clean up resources + self.join_executor_internals() + + def flag_executor_shutting_down(self): + # Flag the executor as shutting down and cancel remaining tasks if + # requested as early as possible if it is not gc-ed yet. + executor = self.executor_reference() + if executor is not None: + executor._shutdown_thread = True + # Cancel pending work items if requested. + if executor._cancel_pending_futures: + # Cancel all pending futures and update pending_work_items + # to only have futures that are currently running. + new_pending_work_items = {} + for work_id, work_item in self.pending_work_items.items(): + if not work_item.future.cancel(): + new_pending_work_items[work_id] = work_item + self.pending_work_items = new_pending_work_items + # Drain work_ids_queue since we no longer need to + # add items to the call queue. + while True: + try: + self.work_ids_queue.get_nowait() + except queue.Empty: + break + # Make sure we do this only once to not waste time looping + # on running processes over and over. + executor._cancel_pending_futures = False + + def shutdown_workers(self): + n_children_to_stop = self.get_n_children_alive() + n_sentinels_sent = 0 + # Send the right number of sentinels, to make sure all children are + # properly terminated. + while (n_sentinels_sent < n_children_to_stop + and self.get_n_children_alive() > 0): + for i in range(n_children_to_stop - n_sentinels_sent): + try: + self.call_queue.put_nowait(None) + n_sentinels_sent += 1 + except queue.Full: + break + + def join_executor_internals(self): + self.shutdown_workers() + # Release the queue's resources as soon as possible. + self.call_queue.close() + self.call_queue.join_thread() + with self.shutdown_lock: + self.thread_wakeup.close() + # If .join() is not called on the created processes then + # some ctx.Queue methods may deadlock on Mac OS X. + for p in self.processes.values(): + p.join() + + def get_n_children_alive(self): + # This is an upper bound on the number of children alive. + return sum(p.is_alive() for p in self.processes.values()) + + +_system_limits_checked = False +_system_limited = None + + +def _check_system_limits(): + global _system_limits_checked, _system_limited + if _system_limits_checked: + if _system_limited: + raise NotImplementedError(_system_limited) + _system_limits_checked = True + try: + import multiprocessing.synchronize + except ImportError: + _system_limited = ( + "This Python build lacks multiprocessing.synchronize, usually due " + "to named semaphores being unavailable on this platform." + ) + raise NotImplementedError(_system_limited) + try: + nsems_max = os.sysconf("SC_SEM_NSEMS_MAX") + except (AttributeError, ValueError): + # sysconf not available or setting not available + return + if nsems_max == -1: + # indetermined limit, assume that limit is determined + # by available memory only + return + if nsems_max >= 256: + # minimum number of semaphores available + # according to POSIX + return + _system_limited = ("system provides too few semaphores (%d" + " available, 256 necessary)" % nsems_max) + raise NotImplementedError(_system_limited) + + +def _chain_from_iterable_of_lists(iterable): + """ + Specialized implementation of itertools.chain.from_iterable. + Each item in *iterable* should be a list. This function is + careful not to keep references to yielded objects. + """ + for element in iterable: + element.reverse() + while element: + yield element.pop() + + +class BrokenProcessPool(_base.BrokenExecutor): + """ + Raised when a process in a ProcessPoolExecutor terminated abruptly + while a future was in the running state. + """ + + +class ProcessPoolExecutor(_base.Executor): + def __init__(self, max_workers=None, mp_context=None, + initializer=None, initargs=()): + """Initializes a new ProcessPoolExecutor instance. + + Args: + max_workers: The maximum number of processes that can be used to + execute the given calls. If None or not given then as many + worker processes will be created as the machine has processors. + mp_context: A multiprocessing context to launch the workers. This + object should provide SimpleQueue, Queue and Process. + initializer: A callable used to initialize worker processes. + initargs: A tuple of arguments to pass to the initializer. + """ + _check_system_limits() + + if max_workers is None: + self._max_workers = os.cpu_count() or 1 + if sys.platform == 'win32': + self._max_workers = min(_MAX_WINDOWS_WORKERS, + self._max_workers) + else: + if max_workers <= 0: + raise ValueError("max_workers must be greater than 0") + elif (sys.platform == 'win32' and + max_workers > _MAX_WINDOWS_WORKERS): + raise ValueError( + f"max_workers must be <= {_MAX_WINDOWS_WORKERS}") + + self._max_workers = max_workers + + if mp_context is None: + mp_context = mp.get_context() + self._mp_context = mp_context + + # https://github.com/python/cpython/issues/90622 + self._safe_to_dynamically_spawn_children = ( + self._mp_context.get_start_method(allow_none=False) != "fork") + + if initializer is not None and not callable(initializer): + raise TypeError("initializer must be a callable") + self._initializer = initializer + self._initargs = initargs + + # Management thread + self._executor_manager_thread = None + + # Map of pids to processes + self._processes = {} + + # Shutdown is a two-step process. + self._shutdown_thread = False + self._shutdown_lock = threading.Lock() + self._idle_worker_semaphore = threading.Semaphore(0) + self._broken = False + self._queue_count = 0 + self._pending_work_items = {} + self._cancel_pending_futures = False + + # _ThreadWakeup is a communication channel used to interrupt the wait + # of the main loop of executor_manager_thread from another thread (e.g. + # when calling executor.submit or executor.shutdown). We do not use the + # _result_queue to send wakeup signals to the executor_manager_thread + # as it could result in a deadlock if a worker process dies with the + # _result_queue write lock still acquired. + # + # _shutdown_lock must be locked to access _ThreadWakeup. + self._executor_manager_thread_wakeup = _ThreadWakeup() + + # Create communication channels for the executor + # Make the call queue slightly larger than the number of processes to + # prevent the worker processes from idling. But don't make it too big + # because futures in the call queue cannot be cancelled. + queue_size = self._max_workers + EXTRA_QUEUED_CALLS + self._call_queue = _SafeQueue( + max_size=queue_size, ctx=self._mp_context, + pending_work_items=self._pending_work_items, + shutdown_lock=self._shutdown_lock, + thread_wakeup=self._executor_manager_thread_wakeup) + # Killed worker processes can produce spurious "broken pipe" + # tracebacks in the queue's own worker thread. But we detect killed + # processes anyway, so silence the tracebacks. + self._call_queue._ignore_epipe = True + self._result_queue = mp_context.SimpleQueue() + self._work_ids = queue.Queue() + + def _start_executor_manager_thread(self): + if self._executor_manager_thread is None: + # Start the processes so that their sentinels are known. + if not self._safe_to_dynamically_spawn_children: # ie, using fork. + self._launch_processes() + self._executor_manager_thread = _ExecutorManagerThread(self) + self._executor_manager_thread.start() + _threads_wakeups[self._executor_manager_thread] = \ + self._executor_manager_thread_wakeup + + def _adjust_process_count(self): + # if there's an idle process, we don't need to spawn a new one. + if self._idle_worker_semaphore.acquire(blocking=False): + return + + process_count = len(self._processes) + if process_count < self._max_workers: + # Assertion disabled as this codepath is also used to replace a + # worker that unexpectedly dies, even when using the 'fork' start + # method. That means there is still a potential deadlock bug. If a + # 'fork' mp_context worker dies, we'll be forking a new one when + # we know a thread is running (self._executor_manager_thread). + #assert self._safe_to_dynamically_spawn_children or not self._executor_manager_thread, 'https://github.com/python/cpython/issues/90622' + self._spawn_process() + + def _launch_processes(self): + # https://github.com/python/cpython/issues/90622 + assert not self._executor_manager_thread, ( + 'Processes cannot be fork()ed after the thread has started, ' + 'deadlock in the child processes could result.') + for _ in range(len(self._processes), self._max_workers): + self._spawn_process() + + def _spawn_process(self): + p = self._mp_context.Process( + target=_process_worker, + args=(self._call_queue, + self._result_queue, + self._initializer, + self._initargs)) + p.start() + self._processes[p.pid] = p + + def submit(self, fn, /, *args, **kwargs): + with self._shutdown_lock: + if self._broken: + raise BrokenProcessPool(self._broken) + if self._shutdown_thread: + raise RuntimeError('cannot schedule new futures after shutdown') + if _global_shutdown: + raise RuntimeError('cannot schedule new futures after ' + 'interpreter shutdown') + + f = _base.Future() + w = _WorkItem(f, fn, args, kwargs) + + self._pending_work_items[self._queue_count] = w + self._work_ids.put(self._queue_count) + self._queue_count += 1 + # Wake up queue management thread + self._executor_manager_thread_wakeup.wakeup() + + if self._safe_to_dynamically_spawn_children: + self._adjust_process_count() + self._start_executor_manager_thread() + return f + submit.__doc__ = _base.Executor.submit.__doc__ + + def map(self, fn, *iterables, timeout=None, chunksize=1): + """Returns an iterator equivalent to map(fn, iter). + + Args: + fn: A callable that will take as many arguments as there are + passed iterables. + timeout: The maximum number of seconds to wait. If None, then there + is no limit on the wait time. + chunksize: If greater than one, the iterables will be chopped into + chunks of size chunksize and submitted to the process pool. + If set to one, the items in the list will be sent one at a time. + + Returns: + An iterator equivalent to: map(func, *iterables) but the calls may + be evaluated out-of-order. + + Raises: + TimeoutError: If the entire result iterator could not be generated + before the given timeout. + Exception: If fn(*args) raises for any values. + """ + if chunksize < 1: + raise ValueError("chunksize must be >= 1.") + + results = super().map(partial(_process_chunk, fn), + _get_chunks(*iterables, chunksize=chunksize), + timeout=timeout) + return _chain_from_iterable_of_lists(results) + + def shutdown(self, wait=True, *, cancel_futures=False): + with self._shutdown_lock: + self._cancel_pending_futures = cancel_futures + self._shutdown_thread = True + if self._executor_manager_thread_wakeup is not None: + # Wake up queue management thread + self._executor_manager_thread_wakeup.wakeup() + + if self._executor_manager_thread is not None and wait: + self._executor_manager_thread.join() + # To reduce the risk of opening too many files, remove references to + # objects that use file descriptors. + self._executor_manager_thread = None + self._call_queue = None + if self._result_queue is not None and wait: + self._result_queue.close() + self._result_queue = None + self._processes = None + self._executor_manager_thread_wakeup = None + + shutdown.__doc__ = _base.Executor.shutdown.__doc__ diff --git a/Lib/concurrent/futures/thread.py b/Lib/concurrent/futures/thread.py new file mode 100644 index 0000000000..493861d314 --- /dev/null +++ b/Lib/concurrent/futures/thread.py @@ -0,0 +1,237 @@ +# Copyright 2009 Brian Quinlan. All Rights Reserved. +# Licensed to PSF under a Contributor Agreement. + +"""Implements ThreadPoolExecutor.""" + +__author__ = 'Brian Quinlan (brian@sweetapp.com)' + +from concurrent.futures import _base +import itertools +import queue +import threading +import types +import weakref +import os + + +_threads_queues = weakref.WeakKeyDictionary() +_shutdown = False +# Lock that ensures that new workers are not created while the interpreter is +# shutting down. Must be held while mutating _threads_queues and _shutdown. +_global_shutdown_lock = threading.Lock() + +def _python_exit(): + global _shutdown + with _global_shutdown_lock: + _shutdown = True + items = list(_threads_queues.items()) + for t, q in items: + q.put(None) + for t, q in items: + t.join() + +# Register for `_python_exit()` to be called just before joining all +# non-daemon threads. This is used instead of `atexit.register()` for +# compatibility with subinterpreters, which no longer support daemon threads. +# See bpo-39812 for context. +threading._register_atexit(_python_exit) + +# At fork, reinitialize the `_global_shutdown_lock` lock in the child process +# TODO RUSTPYTHON - _at_fork_reinit is not implemented yet +if hasattr(os, 'register_at_fork') and hasattr(_global_shutdown_lock, '_at_fork_reinit'): + os.register_at_fork(before=_global_shutdown_lock.acquire, + after_in_child=_global_shutdown_lock._at_fork_reinit, + after_in_parent=_global_shutdown_lock.release) + + +class _WorkItem(object): + def __init__(self, future, fn, args, kwargs): + self.future = future + self.fn = fn + self.args = args + self.kwargs = kwargs + + def run(self): + if not self.future.set_running_or_notify_cancel(): + return + + try: + result = self.fn(*self.args, **self.kwargs) + except BaseException as exc: + self.future.set_exception(exc) + # Break a reference cycle with the exception 'exc' + self = None + else: + self.future.set_result(result) + + __class_getitem__ = classmethod(types.GenericAlias) + + +def _worker(executor_reference, work_queue, initializer, initargs): + if initializer is not None: + try: + initializer(*initargs) + except BaseException: + _base.LOGGER.critical('Exception in initializer:', exc_info=True) + executor = executor_reference() + if executor is not None: + executor._initializer_failed() + return + try: + while True: + work_item = work_queue.get(block=True) + if work_item is not None: + work_item.run() + # Delete references to object. See issue16284 + del work_item + + # attempt to increment idle count + executor = executor_reference() + if executor is not None: + executor._idle_semaphore.release() + del executor + continue + + executor = executor_reference() + # Exit if: + # - The interpreter is shutting down OR + # - The executor that owns the worker has been collected OR + # - The executor that owns the worker has been shutdown. + if _shutdown or executor is None or executor._shutdown: + # Flag the executor as shutting down as early as possible if it + # is not gc-ed yet. + if executor is not None: + executor._shutdown = True + # Notice other workers + work_queue.put(None) + return + del executor + except BaseException: + _base.LOGGER.critical('Exception in worker', exc_info=True) + + +class BrokenThreadPool(_base.BrokenExecutor): + """ + Raised when a worker thread in a ThreadPoolExecutor failed initializing. + """ + + +class ThreadPoolExecutor(_base.Executor): + + # Used to assign unique thread names when thread_name_prefix is not supplied. + _counter = itertools.count().__next__ + + def __init__(self, max_workers=None, thread_name_prefix='', + initializer=None, initargs=()): + """Initializes a new ThreadPoolExecutor instance. + + Args: + max_workers: The maximum number of threads that can be used to + execute the given calls. + thread_name_prefix: An optional name prefix to give our threads. + initializer: A callable used to initialize worker threads. + initargs: A tuple of arguments to pass to the initializer. + """ + if max_workers is None: + # ThreadPoolExecutor is often used to: + # * CPU bound task which releases GIL + # * I/O bound task (which releases GIL, of course) + # + # We use cpu_count + 4 for both types of tasks. + # But we limit it to 32 to avoid consuming surprisingly large resource + # on many core machine. + max_workers = min(32, (os.cpu_count() or 1) + 4) + if max_workers <= 0: + raise ValueError("max_workers must be greater than 0") + + if initializer is not None and not callable(initializer): + raise TypeError("initializer must be a callable") + + self._max_workers = max_workers + self._work_queue = queue.SimpleQueue() + self._idle_semaphore = threading.Semaphore(0) + self._threads = set() + self._broken = False + self._shutdown = False + self._shutdown_lock = threading.Lock() + self._thread_name_prefix = (thread_name_prefix or + ("ThreadPoolExecutor-%d" % self._counter())) + self._initializer = initializer + self._initargs = initargs + + def submit(self, fn, /, *args, **kwargs): + with self._shutdown_lock, _global_shutdown_lock: + if self._broken: + raise BrokenThreadPool(self._broken) + + if self._shutdown: + raise RuntimeError('cannot schedule new futures after shutdown') + if _shutdown: + raise RuntimeError('cannot schedule new futures after ' + 'interpreter shutdown') + + f = _base.Future() + w = _WorkItem(f, fn, args, kwargs) + + self._work_queue.put(w) + self._adjust_thread_count() + return f + submit.__doc__ = _base.Executor.submit.__doc__ + + def _adjust_thread_count(self): + # if idle threads are available, don't spin new threads + if self._idle_semaphore.acquire(timeout=0): + return + + # When the executor gets lost, the weakref callback will wake up + # the worker threads. + def weakref_cb(_, q=self._work_queue): + q.put(None) + + num_threads = len(self._threads) + if num_threads < self._max_workers: + thread_name = '%s_%d' % (self._thread_name_prefix or self, + num_threads) + t = threading.Thread(name=thread_name, target=_worker, + args=(weakref.ref(self, weakref_cb), + self._work_queue, + self._initializer, + self._initargs)) + t.start() + self._threads.add(t) + _threads_queues[t] = self._work_queue + + def _initializer_failed(self): + with self._shutdown_lock: + self._broken = ('A thread initializer failed, the thread pool ' + 'is not usable anymore') + # Drain work queue and mark pending futures failed + while True: + try: + work_item = self._work_queue.get_nowait() + except queue.Empty: + break + if work_item is not None: + work_item.future.set_exception(BrokenThreadPool(self._broken)) + + def shutdown(self, wait=True, *, cancel_futures=False): + with self._shutdown_lock: + self._shutdown = True + if cancel_futures: + # Drain all work items from the queue, and then cancel their + # associated futures. + while True: + try: + work_item = self._work_queue.get_nowait() + except queue.Empty: + break + if work_item is not None: + work_item.future.cancel() + + # Send a wake-up to prevent threads calling + # _work_queue.get(block=True) from permanently blocking. + self._work_queue.put(None) + if wait: + for t in self._threads: + t.join() + shutdown.__doc__ = _base.Executor.shutdown.__doc__ diff --git a/Lib/configparser.py b/Lib/configparser.py new file mode 100644 index 0000000000..e8aae21794 --- /dev/null +++ b/Lib/configparser.py @@ -0,0 +1,1331 @@ +"""Configuration file parser. + +A configuration file consists of sections, lead by a "[section]" header, +and followed by "name: value" entries, with continuations and such in +the style of RFC 822. + +Intrinsic defaults can be specified by passing them into the +ConfigParser constructor as a dictionary. + +class: + +ConfigParser -- responsible for parsing a list of + configuration files, and managing the parsed database. + + methods: + + __init__(defaults=None, dict_type=_default_dict, allow_no_value=False, + delimiters=('=', ':'), comment_prefixes=('#', ';'), + inline_comment_prefixes=None, strict=True, + empty_lines_in_values=True, default_section='DEFAULT', + interpolation=, converters=): + + Create the parser. When `defaults` is given, it is initialized into the + dictionary or intrinsic defaults. The keys must be strings, the values + must be appropriate for %()s string interpolation. + + When `dict_type` is given, it will be used to create the dictionary + objects for the list of sections, for the options within a section, and + for the default values. + + When `delimiters` is given, it will be used as the set of substrings + that divide keys from values. + + When `comment_prefixes` is given, it will be used as the set of + substrings that prefix comments in empty lines. Comments can be + indented. + + When `inline_comment_prefixes` is given, it will be used as the set of + substrings that prefix comments in non-empty lines. + + When `strict` is True, the parser won't allow for any section or option + duplicates while reading from a single source (file, string or + dictionary). Default is True. + + When `empty_lines_in_values` is False (default: True), each empty line + marks the end of an option. Otherwise, internal empty lines of + a multiline option are kept as part of the value. + + When `allow_no_value` is True (default: False), options without + values are accepted; the value presented for these is None. + + When `default_section` is given, the name of the special section is + named accordingly. By default it is called ``"DEFAULT"`` but this can + be customized to point to any other valid section name. Its current + value can be retrieved using the ``parser_instance.default_section`` + attribute and may be modified at runtime. + + When `interpolation` is given, it should be an Interpolation subclass + instance. It will be used as the handler for option value + pre-processing when using getters. RawConfigParser objects don't do + any sort of interpolation, whereas ConfigParser uses an instance of + BasicInterpolation. The library also provides a ``zc.buildout`` + inspired ExtendedInterpolation implementation. + + When `converters` is given, it should be a dictionary where each key + represents the name of a type converter and each value is a callable + implementing the conversion from string to the desired datatype. Every + converter gets its corresponding get*() method on the parser object and + section proxies. + + sections() + Return all the configuration section names, sans DEFAULT. + + has_section(section) + Return whether the given section exists. + + has_option(section, option) + Return whether the given option exists in the given section. + + options(section) + Return list of configuration options for the named section. + + read(filenames, encoding=None) + Read and parse the iterable of named configuration files, given by + name. A single filename is also allowed. Non-existing files + are ignored. Return list of successfully read files. + + read_file(f, filename=None) + Read and parse one configuration file, given as a file object. + The filename defaults to f.name; it is only used in error + messages (if f has no `name` attribute, the string `` is used). + + read_string(string) + Read configuration from a given string. + + read_dict(dictionary) + Read configuration from a dictionary. Keys are section names, + values are dictionaries with keys and values that should be present + in the section. If the used dictionary type preserves order, sections + and their keys will be added in order. Values are automatically + converted to strings. + + get(section, option, raw=False, vars=None, fallback=_UNSET) + Return a string value for the named option. All % interpolations are + expanded in the return values, based on the defaults passed into the + constructor and the DEFAULT section. Additional substitutions may be + provided using the `vars` argument, which must be a dictionary whose + contents override any pre-existing defaults. If `option` is a key in + `vars`, the value from `vars` is used. + + getint(section, options, raw=False, vars=None, fallback=_UNSET) + Like get(), but convert value to an integer. + + getfloat(section, options, raw=False, vars=None, fallback=_UNSET) + Like get(), but convert value to a float. + + getboolean(section, options, raw=False, vars=None, fallback=_UNSET) + Like get(), but convert value to a boolean (currently case + insensitively defined as 0, false, no, off for False, and 1, true, + yes, on for True). Returns False or True. + + items(section=_UNSET, raw=False, vars=None) + If section is given, return a list of tuples with (name, value) for + each option in the section. Otherwise, return a list of tuples with + (section_name, section_proxy) for each section, including DEFAULTSECT. + + remove_section(section) + Remove the given file section and all its options. + + remove_option(section, option) + Remove the given option from the given section. + + set(section, option, value) + Set the given option. + + write(fp, space_around_delimiters=True) + Write the configuration state in .ini format. If + `space_around_delimiters` is True (the default), delimiters + between keys and values are surrounded by spaces. +""" + +from collections.abc import MutableMapping +from collections import ChainMap as _ChainMap +import functools +import io +import itertools +import os +import re +import sys +import warnings + +__all__ = ("NoSectionError", "DuplicateOptionError", "DuplicateSectionError", + "NoOptionError", "InterpolationError", "InterpolationDepthError", + "InterpolationMissingOptionError", "InterpolationSyntaxError", + "ParsingError", "MissingSectionHeaderError", + "ConfigParser", "RawConfigParser", + "Interpolation", "BasicInterpolation", "ExtendedInterpolation", + "LegacyInterpolation", "SectionProxy", "ConverterMapping", + "DEFAULTSECT", "MAX_INTERPOLATION_DEPTH") + +_default_dict = dict +DEFAULTSECT = "DEFAULT" + +MAX_INTERPOLATION_DEPTH = 10 + + + +# exception classes +class Error(Exception): + """Base class for ConfigParser exceptions.""" + + def __init__(self, msg=''): + self.message = msg + Exception.__init__(self, msg) + + def __repr__(self): + return self.message + + __str__ = __repr__ + + +class NoSectionError(Error): + """Raised when no section matches a requested option.""" + + def __init__(self, section): + Error.__init__(self, 'No section: %r' % (section,)) + self.section = section + self.args = (section, ) + + +class DuplicateSectionError(Error): + """Raised when a section is repeated in an input source. + + Possible repetitions that raise this exception are: multiple creation + using the API or in strict parsers when a section is found more than once + in a single input file, string or dictionary. + """ + + def __init__(self, section, source=None, lineno=None): + msg = [repr(section), " already exists"] + if source is not None: + message = ["While reading from ", repr(source)] + if lineno is not None: + message.append(" [line {0:2d}]".format(lineno)) + message.append(": section ") + message.extend(msg) + msg = message + else: + msg.insert(0, "Section ") + Error.__init__(self, "".join(msg)) + self.section = section + self.source = source + self.lineno = lineno + self.args = (section, source, lineno) + + +class DuplicateOptionError(Error): + """Raised by strict parsers when an option is repeated in an input source. + + Current implementation raises this exception only when an option is found + more than once in a single file, string or dictionary. + """ + + def __init__(self, section, option, source=None, lineno=None): + msg = [repr(option), " in section ", repr(section), + " already exists"] + if source is not None: + message = ["While reading from ", repr(source)] + if lineno is not None: + message.append(" [line {0:2d}]".format(lineno)) + message.append(": option ") + message.extend(msg) + msg = message + else: + msg.insert(0, "Option ") + Error.__init__(self, "".join(msg)) + self.section = section + self.option = option + self.source = source + self.lineno = lineno + self.args = (section, option, source, lineno) + + +class NoOptionError(Error): + """A requested option was not found.""" + + def __init__(self, option, section): + Error.__init__(self, "No option %r in section: %r" % + (option, section)) + self.option = option + self.section = section + self.args = (option, section) + + +class InterpolationError(Error): + """Base class for interpolation-related exceptions.""" + + def __init__(self, option, section, msg): + Error.__init__(self, msg) + self.option = option + self.section = section + self.args = (option, section, msg) + + +class InterpolationMissingOptionError(InterpolationError): + """A string substitution required a setting which was not available.""" + + def __init__(self, option, section, rawval, reference): + msg = ("Bad value substitution: option {!r} in section {!r} contains " + "an interpolation key {!r} which is not a valid option name. " + "Raw value: {!r}".format(option, section, reference, rawval)) + InterpolationError.__init__(self, option, section, msg) + self.reference = reference + self.args = (option, section, rawval, reference) + + +class InterpolationSyntaxError(InterpolationError): + """Raised when the source text contains invalid syntax. + + Current implementation raises this exception when the source text into + which substitutions are made does not conform to the required syntax. + """ + + +class InterpolationDepthError(InterpolationError): + """Raised when substitutions are nested too deeply.""" + + def __init__(self, option, section, rawval): + msg = ("Recursion limit exceeded in value substitution: option {!r} " + "in section {!r} contains an interpolation key which " + "cannot be substituted in {} steps. Raw value: {!r}" + "".format(option, section, MAX_INTERPOLATION_DEPTH, + rawval)) + InterpolationError.__init__(self, option, section, msg) + self.args = (option, section, rawval) + + +class ParsingError(Error): + """Raised when a configuration file does not follow legal syntax.""" + + def __init__(self, source): + super().__init__(f'Source contains parsing errors: {source!r}') + self.source = source + self.errors = [] + self.args = (source, ) + + def append(self, lineno, line): + self.errors.append((lineno, line)) + self.message += '\n\t[line %2d]: %s' % (lineno, line) + + +class MissingSectionHeaderError(ParsingError): + """Raised when a key-value pair is found before any section header.""" + + def __init__(self, filename, lineno, line): + Error.__init__( + self, + 'File contains no section headers.\nfile: %r, line: %d\n%r' % + (filename, lineno, line)) + self.source = filename + self.lineno = lineno + self.line = line + self.args = (filename, lineno, line) + + +# Used in parser getters to indicate the default behaviour when a specific +# option is not found it to raise an exception. Created to enable `None` as +# a valid fallback value. +_UNSET = object() + + +class Interpolation: + """Dummy interpolation that passes the value through with no changes.""" + + def before_get(self, parser, section, option, value, defaults): + return value + + def before_set(self, parser, section, option, value): + return value + + def before_read(self, parser, section, option, value): + return value + + def before_write(self, parser, section, option, value): + return value + + +class BasicInterpolation(Interpolation): + """Interpolation as implemented in the classic ConfigParser. + + The option values can contain format strings which refer to other values in + the same section, or values in the special default section. + + For example: + + something: %(dir)s/whatever + + would resolve the "%(dir)s" to the value of dir. All reference + expansions are done late, on demand. If a user needs to use a bare % in + a configuration file, she can escape it by writing %%. Other % usage + is considered a user error and raises `InterpolationSyntaxError`.""" + + _KEYCRE = re.compile(r"%\(([^)]+)\)s") + + def before_get(self, parser, section, option, value, defaults): + L = [] + self._interpolate_some(parser, option, L, value, section, defaults, 1) + return ''.join(L) + + def before_set(self, parser, section, option, value): + tmp_value = value.replace('%%', '') # escaped percent signs + tmp_value = self._KEYCRE.sub('', tmp_value) # valid syntax + if '%' in tmp_value: + raise ValueError("invalid interpolation syntax in %r at " + "position %d" % (value, tmp_value.find('%'))) + return value + + def _interpolate_some(self, parser, option, accum, rest, section, map, + depth): + rawval = parser.get(section, option, raw=True, fallback=rest) + if depth > MAX_INTERPOLATION_DEPTH: + raise InterpolationDepthError(option, section, rawval) + while rest: + p = rest.find("%") + if p < 0: + accum.append(rest) + return + if p > 0: + accum.append(rest[:p]) + rest = rest[p:] + # p is no longer used + c = rest[1:2] + if c == "%": + accum.append("%") + rest = rest[2:] + elif c == "(": + m = self._KEYCRE.match(rest) + if m is None: + raise InterpolationSyntaxError(option, section, + "bad interpolation variable reference %r" % rest) + var = parser.optionxform(m.group(1)) + rest = rest[m.end():] + try: + v = map[var] + except KeyError: + raise InterpolationMissingOptionError( + option, section, rawval, var) from None + if "%" in v: + self._interpolate_some(parser, option, accum, v, + section, map, depth + 1) + else: + accum.append(v) + else: + raise InterpolationSyntaxError( + option, section, + "'%%' must be followed by '%%' or '(', " + "found: %r" % (rest,)) + + +class ExtendedInterpolation(Interpolation): + """Advanced variant of interpolation, supports the syntax used by + `zc.buildout`. Enables interpolation between sections.""" + + _KEYCRE = re.compile(r"\$\{([^}]+)\}") + + def before_get(self, parser, section, option, value, defaults): + L = [] + self._interpolate_some(parser, option, L, value, section, defaults, 1) + return ''.join(L) + + def before_set(self, parser, section, option, value): + tmp_value = value.replace('$$', '') # escaped dollar signs + tmp_value = self._KEYCRE.sub('', tmp_value) # valid syntax + if '$' in tmp_value: + raise ValueError("invalid interpolation syntax in %r at " + "position %d" % (value, tmp_value.find('$'))) + return value + + def _interpolate_some(self, parser, option, accum, rest, section, map, + depth): + rawval = parser.get(section, option, raw=True, fallback=rest) + if depth > MAX_INTERPOLATION_DEPTH: + raise InterpolationDepthError(option, section, rawval) + while rest: + p = rest.find("$") + if p < 0: + accum.append(rest) + return + if p > 0: + accum.append(rest[:p]) + rest = rest[p:] + # p is no longer used + c = rest[1:2] + if c == "$": + accum.append("$") + rest = rest[2:] + elif c == "{": + m = self._KEYCRE.match(rest) + if m is None: + raise InterpolationSyntaxError(option, section, + "bad interpolation variable reference %r" % rest) + path = m.group(1).split(':') + rest = rest[m.end():] + sect = section + opt = option + try: + if len(path) == 1: + opt = parser.optionxform(path[0]) + v = map[opt] + elif len(path) == 2: + sect = path[0] + opt = parser.optionxform(path[1]) + v = parser.get(sect, opt, raw=True) + else: + raise InterpolationSyntaxError( + option, section, + "More than one ':' found: %r" % (rest,)) + except (KeyError, NoSectionError, NoOptionError): + raise InterpolationMissingOptionError( + option, section, rawval, ":".join(path)) from None + if "$" in v: + self._interpolate_some(parser, opt, accum, v, sect, + dict(parser.items(sect, raw=True)), + depth + 1) + else: + accum.append(v) + else: + raise InterpolationSyntaxError( + option, section, + "'$' must be followed by '$' or '{', " + "found: %r" % (rest,)) + + +class LegacyInterpolation(Interpolation): + """Deprecated interpolation used in old versions of ConfigParser. + Use BasicInterpolation or ExtendedInterpolation instead.""" + + _KEYCRE = re.compile(r"%\(([^)]*)\)s|.") + + def __init__(self, *args, **kwargs): + super().__init__(*args, **kwargs) + warnings.warn( + "LegacyInterpolation has been deprecated since Python 3.2 " + "and will be removed from the configparser module in Python 3.13. " + "Use BasicInterpolation or ExtendedInterpolation instead.", + DeprecationWarning, stacklevel=2 + ) + + def before_get(self, parser, section, option, value, vars): + rawval = value + depth = MAX_INTERPOLATION_DEPTH + while depth: # Loop through this until it's done + depth -= 1 + if value and "%(" in value: + replace = functools.partial(self._interpolation_replace, + parser=parser) + value = self._KEYCRE.sub(replace, value) + try: + value = value % vars + except KeyError as e: + raise InterpolationMissingOptionError( + option, section, rawval, e.args[0]) from None + else: + break + if value and "%(" in value: + raise InterpolationDepthError(option, section, rawval) + return value + + def before_set(self, parser, section, option, value): + return value + + @staticmethod + def _interpolation_replace(match, parser): + s = match.group(1) + if s is None: + return match.group() + else: + return "%%(%s)s" % parser.optionxform(s) + + +class RawConfigParser(MutableMapping): + """ConfigParser that does not do interpolation.""" + + # Regular expressions for parsing section headers and options + _SECT_TMPL = r""" + \[ # [ + (?P
.+) # very permissive! + \] # ] + """ + _OPT_TMPL = r""" + (?P