89 lines
2.8 KiB
Ruby
89 lines
2.8 KiB
Ruby
|
# -*- coding: utf-8 -*- #
|
||
|
|
# frozen_string_literal: true
|
||
|
|
|
||
|
|
module Rouge
|
||
|
|
module Lexers
|
||
|
|
class Java < RegexLexer
|
||
|
|
title "Java"
|
||
|
|
desc "The Java programming language (java.com)"
|
||
|
|
|
||
|
|
tag 'java'
|
||
|
|
filenames '*.java'
|
||
|
|
mimetypes 'text/x-java'
|
||
|
|
|
||
|
|
keywords = %w(
|
||
|
|
assert break case catch continue default do else finally for
|
||
|
|
if goto instanceof new return switch this throw try while
|
||
|
|
)
|
||
|
|
|
||
|
|
declarations = %w(
|
||
|
|
abstract const enum extends final implements native private protected
|
||
|
|
public static strictfp super synchronized throws transient volatile
|
||
|
|
)
|
||
|
|
|
||
|
|
types = %w(boolean byte char double float int long short var void)
|
||
|
|
|
||
|
|
id = /[a-zA-Z_][a-zA-Z0-9_]*/
|
||
|
|
|
||
|
|
state :root do
|
||
|
|
rule /[^\S\n]+/, Text
|
||
|
|
rule %r(//.*?$), Comment::Single
|
||
|
|
rule %r(/\*.*?\*/)m, Comment::Multiline
|
||
|
|
# keywords: go before method names to avoid lexing "throw new XYZ"
|
||
|
|
# as a method signature
|
||
|
|
rule /(?:#{keywords.join('|')})\b/, Keyword
|
||
|
|
|
||
|
|
rule %r(
|
||
|
|
(\s*(?:[a-zA-Z_][a-zA-Z0-9_.\[\]<>]*\s+)+?) # return arguments
|
||
|
|
([a-zA-Z_][a-zA-Z0-9_]*) # method name
|
||
|
|
(\s*)(\() # signature start
|
||
|
|
)mx do |m|
|
||
|
|
# TODO: do this better, this shouldn't need a delegation
|
||
|
|
delegate Java, m[1]
|
||
|
|
token Name::Function, m[2]
|
||
|
|
token Text, m[3]
|
||
|
|
token Operator, m[4]
|
||
|
|
end
|
||
|
|
|
||
|
|
rule /@#{id}/, Name::Decorator
|
||
|
|
rule /(?:#{declarations.join('|')})\b/, Keyword::Declaration
|
||
|
|
rule /(?:#{types.join('|')})\b/, Keyword::Type
|
||
|
|
rule /package\b/, Keyword::Namespace
|
||
|
|
rule /(?:true|false|null)\b/, Keyword::Constant
|
||
|
|
rule /(?:class|interface)\b/, Keyword::Declaration, :class
|
||
|
|
rule /import\b/, Keyword::Namespace, :import
|
||
|
|
rule /"(\\\\|\\"|[^"])*"/, Str
|
||
|
|
rule /'(?:\\.|[^\\]|\\u[0-9a-f]{4})'/, Str::Char
|
||
|
|
rule /(\.)(#{id})/ do
|
||
|
|
groups Operator, Name::Attribute
|
||
|
|
end
|
||
|
|
|
||
|
|
rule /#{id}:/, Name::Label
|
||
|
|
rule /\$?#{id}/, Name
|
||
|
|
rule /[~^*!%&\[\](){}<>\|+=:;,.\/?-]/, Operator
|
||
|
|
|
||
|
|
digit = /[0-9]_+[0-9]|[0-9]/
|
||
|
|
bin_digit = /[01]_+[01]|[01]/
|
||
|
|
oct_digit = /[0-7]_+[0-7]|[0-7]/
|
||
|
|
hex_digit = /[0-9a-f]_+[0-9a-f]|[0-9a-f]/i
|
||
|
|
rule /#{digit}+\.#{digit}+([eE]#{digit}+)?[fd]?/, Num::Float
|
||
|
|
rule /0b#{bin_digit}+/i, Num::Bin
|
||
|
|
rule /0x#{hex_digit}+/i, Num::Hex
|
||
|
|
rule /0#{oct_digit}+/, Num::Oct
|
||
|
|
rule /#{digit}+L?/, Num::Integer
|
||
|
|
rule /\n/, Text
|
||
|
|
end
|
||
|
|
|
||
|
|
state :class do
|
||
|
|
rule /\s+/m, Text
|
||
|
|
rule id, Name::Class, :pop!
|
||
|
|
end
|
||
|
|
|
||
|
|
state :import do
|
||
|
|
rule /\s+/m, Text
|
||
|
|
rule /[a-z0-9_.]+\*?/i, Name::Namespace, :pop!
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|