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# -*- coding: utf-8 -*- #
# frozen_string_literal: true
module Rouge
module Lexers
class Wollok < RegexLexer
title 'Wollok'
desc 'Wollok lang'
tag 'wollok'
filenames '*.wlk', '*.wtest', '*.wpgm'
keywords = %w(new super return if else var const override constructor)
entity_name = /[a-zA-Z][a-zA-Z0-9]*/
variable_naming = /_?#{entity_name}/
state :whitespaces_and_comments do
rule %r/\s+/m, Text::Whitespace
rule %r(//.*$), Comment::Single
rule %r(/\*(.|\s)*?\*/)m, Comment::Multiline
end
state :root do
mixin :whitespaces_and_comments
rule %r/(import)(.+$)/ do
groups Keyword::Reserved, Text
end
rule %r/(class|object|mixin)/, Keyword::Reserved, :foo
rule %r/test|program/, Keyword::Reserved #, :chunk_naming
rule %r/(package)(\s+)(#{entity_name})/ do
groups Keyword::Reserved, Text::Whitespace, Name::Class
end
rule %r/{|}/, Text
mixin :keywords
mixin :symbols
mixin :objects
end
state :foo do
mixin :whitespaces_and_comments
rule %r/inherits|mixed|with|and/, Keyword::Reserved
rule %r/#{entity_name}(?=\s*{)/ do |m|
token Name::Class
entities << m[0]
pop!
end
rule %r/#{entity_name}/ do |m|
token Name::Class
entities << m[0]
end
end
state :keywords do
def any(expressions)
/#{expressions.map { |keyword| "#{keyword}\\b" }.join('|')}/
end
rule %r/self\b/, Name::Builtin::Pseudo
rule any(keywords), Keyword::Reserved
rule %r/(method)(\s+)(#{variable_naming})/ do
groups Keyword::Reserved, Text::Whitespace, Text
end
end
state :objects do
rule variable_naming do |m|
variable = m[0]
if entities.include?(variable) || ('A'..'Z').cover?(variable[0])
token Name::Class
else
token Keyword::Variable
end
end
rule %r/\.#{entity_name}/, Text
mixin :literals
end
state :literals do
mixin :whitespaces_and_comments
rule %r/[0-9]+\.?[0-9]*/, Literal::Number
rule %r/"[^"]*"/m, Literal::String
rule %r/\[|\#{/, Punctuation, :lists
end
state :lists do
rule %r/,/, Punctuation
rule %r/]|}/, Punctuation, :pop!
mixin :objects
end
state :symbols do
rule %r/\+\+|--|\+=|-=|\*\*|!/, Operator
rule %r/\+|-|\*|\/|%/, Operator
rule %r/<=|=>|===|==|<|>/, Operator
rule %r/and\b|or\b|not\b/, Operator
rule %r/\(|\)|=/, Text
rule %r/,/, Punctuation
end
private
def entities
@entities ||= []
end
end
end
end
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