106 lines
2.9 KiB
Ruby
106 lines
2.9 KiB
Ruby
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# -*- coding: utf-8 -*- #
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# frozen_string_literal: true
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module Rouge
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module Lexers
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class Dart < RegexLexer
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title "Dart"
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desc "The Dart programming language (dartlang.com)"
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tag 'dart'
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filenames '*.dart'
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mimetypes 'text/x-dart'
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keywords = %w(
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as assert break case catch continue default do else finally for
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if in is new rethrow return super switch this throw try while with
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)
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declarations = %w(
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abstract dynamic const external extends factory final get implements
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native operator set static typedef var
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)
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types = %w(bool double Dynamic enum int num Object Set String void)
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imports = %w(import export library part\s*of part source)
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id = /[a-zA-Z_]\w*/
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state :root do
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rule %r(^
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(\s*(?:[a-zA-Z_][a-zA-Z\d_.\[\]]*\s+)+?) # return arguments
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([a-zA-Z_][\w]*) # method name
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(\s*)(\() # signature start
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)mx do |m|
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# TODO: do this better, this shouldn't need a delegation
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delegate Dart, m[1]
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token Name::Function, m[2]
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token Text, m[3]
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token Punctuation, m[4]
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end
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rule /\s+/, Text
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rule %r(//.*?$), Comment::Single
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rule %r(/\*.*?\*/)m, Comment::Multiline
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rule /"/, Str, :dqs
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rule /'/, Str, :sqs
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rule /r"[^"]*"/, Str::Other
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rule /r'[^']*'/, Str::Other
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rule /##{id}*/i, Str::Symbol
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rule /@#{id}/, Name::Decorator
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rule /(?:#{keywords.join('|')})\b/, Keyword
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rule /(?:#{declarations.join('|')})\b/, Keyword::Declaration
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rule /(?:#{types.join('|')})\b/, Keyword::Type
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rule /(?:true|false|null)\b/, Keyword::Constant
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rule /(?:class|interface)\b/, Keyword::Declaration, :class
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rule /(?:#{imports.join('|')})\b/, Keyword::Namespace, :import
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rule /(\.)(#{id})/ do
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groups Operator, Name::Attribute
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end
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rule /#{id}:/, Name::Label
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rule /\$?#{id}/, Name
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rule /[~^*!%&\[\](){}<>\|+=:;,.\/?-]/, Operator
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rule /\d*\.\d+([eE]\-?\d+)?/, Num::Float
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rule /0x[\da-fA-F]+/, Num::Hex
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rule /\d+L?/, Num::Integer
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rule /\n/, Text
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end
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state :class do
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rule /\s+/m, Text
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rule id, Name::Class, :pop!
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end
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state :dqs do
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rule /"/, Str, :pop!
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rule /[^\\\$"]+/, Str
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mixin :string
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end
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state :sqs do
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rule /'/, Str, :pop!
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rule /[^\\\$']+/, Str
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mixin :string
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end
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state :import do
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rule /;/, Operator, :pop!
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rule /(?:show|hide)\b/, Keyword::Declaration
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mixin :root
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end
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state :string do
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mixin :interpolation
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rule /\\[nrt\"\'\\]/, Str::Escape
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end
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state :interpolation do
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rule /\$#{id}/, Str::Interpol
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rule /\$\{[^\}]+\}/, Str::Interpol
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end
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end
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end
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end
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