/* This is a dummy line to alter the dbscheme, so we can make a database upgrade
 * without actually changing any of the dbscheme predicates. It contains a date
 * to allow for such updates in the future as well.
 *
 * 2020-07-02
 *
 * DO NOT remove this comment carelessly, since it can revert the dbscheme back to a
 * previously seen state (matching a previously seen SHA), which would make the upgrade
 * mechanism not work properly.
 */

/*- DEPRECATED: External defects and metrics -*/

externalDefects(
  unique int id : @externalDefect,
  varchar(900) queryPath : string ref,
  int location : @location ref,
  varchar(900) message : string ref,
  float severity : float ref
);

externalMetrics(
  unique int id : @externalMetric,
  varchar(900) queryPath : string ref,
  int location : @location ref,
  float value : float ref
);

/*- External data -*/

/**
 * External data, loaded from CSV files during snapshot creation. See
 * [Tutorial: Incorporating external data](https://help.semmle.com/wiki/display/SD/Tutorial%3A+Incorporating+external+data)
 * for more information.
 */
externalData(
  int id : @externalDataElement,
  string path : string ref,
  int column: int ref,
  string value : string ref
);

/*- DEPRECATED: Snapshot date -*/

snapshotDate(unique date snapshotDate : date ref);

/*- Source location prefix -*/

/**
 * The source location of the snapshot.
 */
sourceLocationPrefix(string prefix : string ref);

/*- DEPRECATED: Duplicate code -*/

duplicateCode(
  unique int id : @duplication,
  string relativePath : string ref,
  int equivClass : int ref
);

similarCode(
  unique int id : @similarity,
  string relativePath : string ref,
  int equivClass : int ref
);

@duplication_or_similarity = @duplication | @similarity

tokens(
  int id : @duplication_or_similarity ref,
  int offset : int ref,
  int beginLine : int ref,
  int beginColumn : int ref,
  int endLine : int ref,
  int endColumn : int ref
);

/*- DEPRECATED: Version control data -*/

svnentries(
  unique int id : @svnentry,
  string revision : string ref,
  string author : string ref,
  date revisionDate : date ref,
  int changeSize : int ref
)

svnaffectedfiles(
  int id : @svnentry ref,
  int file : @file ref,
  string action : string ref
)

svnentrymsg(
  unique int id : @svnentry ref,
  string message : string ref
)

svnchurn(
  int commit : @svnentry ref,
  int file : @file ref,
  int addedLines : int ref,
  int deletedLines : int ref
)

/*- Lines of code -*/

numlines(
  int element_id: @sourceline ref,
  int num_lines: int ref,
  int num_code: int ref,
  int num_comment: int ref
);

/*- Files and folders -*/

/**
 * The location of an element.
 * The location spans column `startcolumn` of line `startline` to
 * column `endcolumn` of line `endline` in file `file`.
 * For more information, see
 * [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
 */
locations_default(
  unique int id: @location_default,
  int file: @file ref,
  int beginLine: int ref,
  int beginColumn: int ref,
  int endLine: int ref,
  int endColumn: int ref
);

files(
  unique int id: @file,
  string name: string ref
);

folders(
  unique int id: @folder,
  string name: string ref
);

@container = @file | @folder

containerparent(
  int parent: @container ref,
  unique int child: @container ref
);

/*- XML Files -*/

xmlEncoding(
  unique int id: @file ref,
  string encoding: string ref
);

xmlDTDs(
  unique int id: @xmldtd,
  string root: string ref,
  string publicId: string ref,
  string systemId: string ref,
  int fileid: @file ref
);

xmlElements(
  unique int id: @xmlelement,
  string name: string ref,
  int parentid: @xmlparent ref,
  int idx: int ref,
  int fileid: @file ref
);

xmlAttrs(
  unique int id: @xmlattribute,
  int elementid: @xmlelement ref,
  string name: string ref,
  string value: string ref,
  int idx: int ref,
  int fileid: @file ref
);

xmlNs(
  int id: @xmlnamespace,
  string prefixName: string ref,
  string URI: string ref,
  int fileid: @file ref
);

xmlHasNs(
  int elementId: @xmlnamespaceable ref,
  int nsId: @xmlnamespace ref,
  int fileid: @file ref
);

xmlComments(
  unique int id: @xmlcomment,
  string text: string ref,
  int parentid: @xmlparent ref,
  int fileid: @file ref
);

xmlChars(
  unique int id: @xmlcharacters,
  string text: string ref,
  int parentid: @xmlparent ref,
  int idx: int ref,
  int isCDATA: int ref,
  int fileid: @file ref
);

@xmlparent = @file | @xmlelement;
@xmlnamespaceable = @xmlelement | @xmlattribute;

xmllocations(
  int xmlElement: @xmllocatable ref,
  int location: @location_default ref
);

@xmllocatable = @xmlcharacters | @xmlelement | @xmlcomment | @xmlattribute | @xmldtd | @file | @xmlnamespace;

/*- YAML -*/

#keyset[parent, idx]
yaml (unique int id: @yaml_node,
      int kind: int ref,
      int parent: @yaml_node_parent ref,
      int idx: int ref,
      string tag: string ref,
      string tostring: string ref);

case @yaml_node.kind of
  0 = @yaml_scalar_node
| 1 = @yaml_mapping_node
| 2 = @yaml_sequence_node
| 3 = @yaml_alias_node
;

@yaml_collection_node = @yaml_mapping_node | @yaml_sequence_node;

@yaml_node_parent = @yaml_collection_node | @file;

yaml_anchors (unique int node: @yaml_node ref,
              string anchor: string ref);

yaml_aliases (unique int alias: @yaml_alias_node ref,
              string target: string ref);

yaml_scalars (unique int scalar: @yaml_scalar_node ref,
              int style: int ref,
              string value: string ref);

yaml_errors (unique int id: @yaml_error,
             string message: string ref);

yaml_locations(unique int locatable: @yaml_locatable ref,
             int location: @location_default ref);

@yaml_locatable = @yaml_node | @yaml_error;

/*- Python dbscheme -*/

/*
 * Line metrics
 */
py_codelines(int id : @py_scope ref,
             int count : int ref);

py_commentlines(int id : @py_scope ref,
                int count : int ref);

py_docstringlines(int id : @py_scope ref,
                int count : int ref);

py_alllines(int id : @py_scope ref,
                int count : int ref);

/****************************
        Python dbscheme
****************************/

@sourceline = @file | @py_Module | @xmllocatable;

@location = @location_ast | @location_default ;

locations_ast(unique int id: @location_ast,
          int module: @py_Module ref,
          int beginLine: int ref,
          int beginColumn: int ref,
          int endLine: int ref,
          int endColumn: int ref);

file_contents(unique int file: @file ref, string contents: string ref);

py_module_path(int module: @py_Module ref, int file: @container ref);

variable(unique int id : @py_variable,
         int scope : @py_scope ref,
         varchar(1) name : string ref);

py_line_lengths(unique int id : @py_line,
                int file: @py_Module ref,
                int line : int ref,
                int length : int ref);

py_extracted_version(int module : @py_Module ref,
                     varchar(1) version : string ref);

$AST_SCHEME$

/* Map relative names to absolute names for imports */
py_absolute_names(int module : @py_Module ref,
                  varchar(1) relname : string ref,
                  varchar(1) absname : string ref);

py_exports(int id : @py_Module ref,
           varchar(1) name : string ref);

/* Successor information */
py_successors(int predecessor : @py_flow_node ref,
              int successor : @py_flow_node ref);

py_true_successors(int predecessor : @py_flow_node ref,
              int successor : @py_flow_node ref);

py_exception_successors(int predecessor : @py_flow_node ref,
              int successor : @py_flow_node ref);

py_false_successors(int predecessor : @py_flow_node ref,
              int successor : @py_flow_node ref);

py_flow_bb_node(unique int flownode : @py_flow_node,
             int realnode : @py_ast_node ref,
             int basicblock : @py_flow_node ref,
             int index : int ref);

py_scope_flow(int flow : @py_flow_node ref,
              int scope : @py_scope ref,
              int kind : int ref);

py_idoms(unique int node : @py_flow_node ref,
         int immediate_dominator : @py_flow_node ref);

py_ssa_phi(int phi : @py_ssa_var ref,
           int arg: @py_ssa_var ref);

py_ssa_var(unique int id : @py_ssa_var,
            int var : @py_variable ref);

py_ssa_use(int node: @py_flow_node ref,
           int var : @py_ssa_var ref);

py_ssa_defn(unique int id : @py_ssa_var ref,
                  int node: @py_flow_node ref);

@py_base_var = @py_variable | @py_ssa_var;

py_scopes(unique int node : @py_expr_or_stmt ref,
         int scope : @py_scope ref);

py_scope_location(unique int id : @location ref,
                   unique int scope : @py_scope ref);

py_flags_versioned(varchar(1) name : string ref,
                   varchar(1) value : string ref,
                   varchar(1) version : string ref);

py_syntax_error_versioned(unique int id : @location ref,
                varchar(1) message : string ref,
                varchar(1) version : string ref);

py_comments(unique int id : @py_comment,
           varchar(1) text : string ref,
           unique int location : @location ref);

/* Type information support */

py_cobjects(unique int obj : @py_cobject);

py_cobjecttypes(unique int obj : @py_cobject ref,
                int typeof : @py_cobject ref);

py_cobjectnames(unique int obj : @py_cobject ref,
                varchar(1) name : string ref);

/* Kind should be 0 for introspection, > 0 from source, as follows:
   1 from C extension source
 */
py_cobject_sources(int obj : @py_cobject ref,
                  int kind : int ref);

py_cmembers_versioned(int object : @py_cobject ref,
                      varchar(1) name : string ref,
                      int member : @py_cobject ref,
                      varchar(1) version : string ref);

py_citems(int object : @py_cobject ref,
            int index : int ref,
            int member : @py_cobject ref);

ext_argtype(int funcid : @py_object ref,
            int arg : int ref,
            int typeid : @py_object ref);

ext_rettype(int funcid : @py_object ref,
            int typeid : @py_object ref);

ext_proptype(int propid : @py_object ref,
             int typeid : @py_object ref);

ext_argreturn(int funcid : @py_object ref,
              int arg : int ref);

py_special_objects(unique int obj : @py_cobject ref,
                   unique varchar(1) name : string ref);

py_decorated_object(int object : @py_object ref,
                    int level: int ref);

@py_object = @py_cobject | @py_flow_node;

@py_source_element = @py_ast_node | @container;