rf-web/vendor/bundle/gems/rouge-3.12.0/lib/rouge/lexers/kotlin.rb

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2019-10-21 08:18:17 +00:00
# -*- coding: utf-8 -*- #
# frozen_string_literal: true
module Rouge
module Lexers
class Kotlin < RegexLexer
# https://kotlinlang.org/docs/reference/grammar.html
title "Kotlin"
desc "Kotlin Programming Language (http://kotlinlang.org)"
tag 'kotlin'
filenames '*.kt', '*.kts'
mimetypes 'text/x-kotlin'
keywords = %w(
abstract annotation as break by catch class companion const
constructor continue crossinline do dynamic else enum
external false final finally for fun get if import in infix
inline inner interface internal is lateinit noinline null
object open operator out override package private protected
public reified return sealed set super suspend tailrec this
throw true try typealias typeof val var vararg when where
while yield
)
name_chars = %r'[-_\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Nl}\p{Nd}\p{Pc}\p{Cf}\p{Mn}\p{Mc}]*'
class_name = %r'`?[\p{Lu}]#{name_chars}`?'
name = %r'`?[_\p{Lu}\p{Ll}\p{Lt}\p{Lm}\p{Nl}]#{name_chars}`?'
state :root do
rule %r'\b(companion)(\s+)(object)\b' do
groups Keyword, Text, Keyword
end
rule %r'\b(class|data\s+class|interface|object)(\s+)' do
groups Keyword::Declaration, Text
push :class
end
rule %r'\b(fun)(\s+)' do
groups Keyword, Text
push :function
end
rule %r'\b(package|import)(\s+)' do
groups Keyword, Text
push :package
end
rule %r'\b(val|var)(\s+)(\()' do
groups Keyword::Declaration, Text, Punctuation
push :destructure
end
rule %r'\b(val|var)(\s+)' do
groups Keyword::Declaration, Text
push :property
end
rule %r'\bfun\b', Keyword
rule %r'\b(?:#{keywords.join('|')})\b', Keyword
rule %r'^\s*\[.*?\]', Name::Attribute
rule %r'[^\S\n]+', Text
rule %r'\\\n', Text # line continuation
rule %r'//.*?$', Comment::Single
rule %r'/[*].*[*]/', Comment::Multiline # single line block comment
rule %r'/[*].*', Comment::Multiline, :comment # multiline block comment
rule %r'\n', Text
rule %r'::|!!|\?[:.]', Operator
rule %r"(\.\.)", Operator
rule %r'[~!%^&*()+=|\[\]:;,.<>/?-]', Punctuation
rule %r'[{}]', Punctuation
rule %r'@"(""|[^"])*"'m, Str
rule %r'""".*?"""'m, Str
rule %r'"(\\\\|\\"|[^"\n])*["\n]'m, Str
rule %r"'\\.'|'[^\\]'", Str::Char
rule %r"[0-9](\.[0-9]+)?([eE][+-][0-9]+)?[flFL]?|0[xX][0-9a-fA-F]+[Ll]?", Num
rule %r'(@#{class_name})', Name::Decorator
rule %r'(#{class_name})(<)' do
groups Name::Class, Punctuation
push :generic_parameters
end
rule class_name, Name::Class
rule %r'(#{name})(?=\s*[({])', Name::Function
rule name, Name
end
state :package do
rule %r'\S+', Name::Namespace, :pop!
end
state :class do
rule class_name, Name::Class, :pop!
end
state :function do
rule %r'(<)', Punctuation, :generic_parameters
rule %r'(\s+)', Text
rule %r'(#{class_name})(\.)' do
groups Name::Class, Punctuation
end
rule name, Name::Function, :pop!
end
state :generic_parameters do
rule class_name, Name::Class
rule %r'(<)', Punctuation, :generic_parameters
rule %r'(,)', Punctuation
rule %r'(\s+)', Text
rule %r'(>)', Punctuation, :pop!
end
state :property do
rule name, Name::Property, :pop!
end
state :destructure do
rule %r'(,)', Punctuation
rule %r'(\))', Punctuation, :pop!
rule %r'(\s+)', Text
rule name, Name::Property
end
state :comment do
rule %r'\s*/[*].*', Comment::Multiline, :comment
rule %r'.*[*]/', Comment::Multiline, :pop!
rule %r'.*', Comment::Multiline
end
end
end
end