diff --git a/lib/coderay/helpers/file_type.rb b/lib/coderay/helpers/file_type.rb index 7de34d58..174ba157 100644 --- a/lib/coderay/helpers/file_type.rb +++ b/lib/coderay/helpers/file_type.rb @@ -120,6 +120,7 @@ def type_from_shebang filename 'ru' => :ruby, # config.ru 'rxml' => :ruby, 'sass' => :sass, + 'scss' => :sass, 'sql' => :sql, 'taskpaper' => :taskpaper, 'template' => :json, # AWS CloudFormation template diff --git a/lib/coderay/scanners/scss.rb b/lib/coderay/scanners/scss.rb new file mode 100644 index 00000000..c2afff57 --- /dev/null +++ b/lib/coderay/scanners/scss.rb @@ -0,0 +1,222 @@ +module CodeRay +module Scanners + + # A scanner for Sass, in scss syntax. + class SCSS < CSS + + register_for :scss + file_extension 'scss' + + protected + + def setup + @state = :initial + end + + def scan_tokens encoder, options + states = Array(options[:state] || @state).dup + + encoder.begin_group :string if states.last == :sqstring || states.last == :dqstring + + until eos? + + if bol? && (match = scan(/(?>( +)?(\/[\*\/])(.+)?)(?=\n)/)) + encoder.text_token self[1], :space if self[1] + encoder.begin_group :comment + encoder.text_token self[2], :delimiter + encoder.text_token self[3], :content if self[3] + if match = scan(/(?:\n+#{self[1]} .*)+/) + encoder.text_token match, :content + end + encoder.end_group :comment + elsif match = scan(/\n|[^\n\S]+\n?/) + encoder.text_token match, :space + if match.index(/\n/) + value_expected = false + states.pop if states.last == :include + end + + elsif states.last == :sass_inline && (match = scan(/\}/)) + encoder.text_token match, :inline_delimiter + encoder.end_group :inline + states.pop + + elsif case states.last + when :initial, :media, :sass_inline + if match = scan(/(?>#{RE::Ident})(?!\()/ox) + encoder.text_token match, value_expected ? :value : (check(/\S*:(?![a-z])/) ? :key : :tag) + next + elsif !value_expected && (match = scan(/\*/)) + encoder.text_token match, :tag + next + # TODO: update RE:Name to add "%" as valid start of class name + elsif match = scan(/(\.|\%)[^\d][-_a-zA-Z\d#\{\}\$]+/) + encoder.text_token match, :class + next + elsif match = scan(RE::Id) + encoder.text_token match, :id + next + elsif match = scan(RE::PseudoClass) + encoder.text_token match, :pseudo_class + next + elsif match = scan(RE::AttributeSelector) + # TODO: Improve highlighting inside of attribute selectors. + encoder.text_token match[0,1], :operator + encoder.text_token match[1..-2], :attribute_name if match.size > 2 + encoder.text_token match[-1,1], :operator if match[-1] == ?] + next + elsif match = scan(/(\=|@mixin +)#{RE::Ident}/o) + encoder.text_token match, :function + next + elsif match = scan(/@import\b/) + encoder.text_token match, :directive + states << :include + next + elsif match = scan(/@media\b/) + encoder.text_token match, :directive + # states.push :media_before_name + next + end + + when :sqstring, :dqstring + if match = scan(states.last == :sqstring ? /(?:[^\n\'\#]+|\\\n|#{RE::Escape}|#(?!\{))+/o : /(?:[^\n\"\#]+|\\\n|#{RE::Escape}|#(?!\{))+/o) + encoder.text_token match, :content + elsif match = scan(/['"]/) + encoder.text_token match, :delimiter + encoder.end_group :string + states.pop + elsif match = scan(/#\{/) + encoder.begin_group :inline + encoder.text_token match, :inline_delimiter + states.push :sass_inline + elsif match = scan(/ \\ | $ /x) + encoder.end_group states.last + encoder.text_token match, :error unless match.empty? + states.pop + else + raise_inspect "else case #{states.last} reached; %p not handled." % peek(1), encoder + end + + when :include + if match = scan(/[^\s'",]+/) + encoder.text_token match, :include + next + end + + else + #:nocov: + raise_inspect 'Unknown state: %p' % [states.last], encoder + #:nocov: + + end + + elsif match = scan(/\$#{RE::Ident}/o) + encoder.text_token match, :variable + next + + elsif match = scan(/&/) + encoder.text_token match, :local_variable + + elsif match = scan(/\+#{RE::Ident}/o) + encoder.text_token match, :include + value_expected = true + + elsif match = scan(/\/\*(?:.*?\*\/|.*)|\/\/.*/) + encoder.text_token match, :comment + + elsif match = scan(/#\{/) + encoder.begin_group :inline + encoder.text_token match, :inline_delimiter + states.push :sass_inline + + elsif match = scan(/\{/) + value_expected = false + encoder.text_token match, :operator + + elsif match = scan(/\}/) + value_expected = false + encoder.text_token match, :operator + if states.last == :block || states.last == :media + states.pop + end + + elsif match = scan(/['"]/) + encoder.begin_group :string + encoder.text_token match, :delimiter + if states.include? :sass_inline + # no nesting, just scan the string until delimiter + content = scan_until(/(?=#{match}|\}|\z)/) + encoder.text_token content, :content unless content.empty? + encoder.text_token match, :delimiter if scan(/#{match}/) + encoder.end_group :string + else + states.push match == "'" ? :sqstring : :dqstring + end + + elsif match = scan(/#{RE::Function}/o) + encoder.begin_group :function + start = match[/^[-\w]+\(/] + encoder.text_token start, :delimiter + if match[-1] == ?) + encoder.text_token match[start.size..-2], :content + encoder.text_token ')', :delimiter + else + encoder.text_token match[start.size..-1], :content if start.size < match.size + end + encoder.end_group :function + + elsif match = scan(/[a-z][-a-z_]*(?=\()/o) + encoder.text_token match, :predefined + + elsif match = scan(/(?: #{RE::Dimension} | #{RE::Percentage} | #{RE::Num} )/ox) + encoder.text_token match, :float + + elsif match = scan(/#{RE::HexColor}/o) + encoder.text_token match, :color + + elsif match = scan(/! *(?:important|optional|default)/) + encoder.text_token match, :important + + elsif match = scan(/(?:rgb|hsl)a?\([^()\n]*\)?/) + encoder.text_token match, :color + + elsif match = scan(/@else if\b|#{RE::AtKeyword}/o) + encoder.text_token match, :directive + value_expected = true + + elsif match = scan(/ == | != | [-+*\/>~:;,.=()] /x) + if match == ':' + value_expected = true + elsif match == ';' + value_expected = false + end + encoder.text_token match, :operator + + else + encoder.text_token getch, :error + + end + + end + + states.pop if states.last == :include + + if options[:keep_state] + @state = states.dup + end + + while state = states.pop + if state == :sass_inline + encoder.end_group :inline + elsif state == :sqstring || state == :dqstring + encoder.end_group :string + end + end + + encoder + end + + end + +end +end