vis

a vi-like editor based on Plan 9's structural regular expressions
groovy.lua

(2812B)
      1 -- Copyright 2006-2025 Mitchell. See LICENSE.
      2 -- Groovy LPeg lexer.
      3 
      4 local lexer = require('lexer')
      5 local token, word_match = lexer.token, lexer.word_match
      6 local P, S = lpeg.P, lpeg.S
      7 
      8 local lex = lexer.new('groovy')
      9 
     10 -- Whitespace.
     11 lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1))
     12 
     13 -- Keywords.
     14 lex:add_rule('keyword', token(lexer.KEYWORD, word_match{
     15 	'abstract', 'break', 'case', 'catch', 'continue', 'default', 'do', 'else', 'extends', 'final',
     16 	'finally', 'for', 'if', 'implements', 'instanceof', 'native', 'new', 'private', 'protected',
     17 	'public', 'return', 'static', 'switch', 'synchronized', 'throw', 'throws', 'transient', 'try',
     18 	'volatile', 'while', 'strictfp', 'package', 'import', 'as', 'assert', 'def', 'mixin', 'property',
     19 	'test', 'using', 'in', 'false', 'null', 'super', 'this', 'true', 'it'
     20 }))
     21 
     22 -- Functions.
     23 lex:add_rule('function', token(lexer.FUNCTION, word_match{
     24 	'abs', 'any', 'append', 'asList', 'asWritable', 'call', 'collect', 'compareTo', 'count', 'div',
     25 	'dump', 'each', 'eachByte', 'eachFile', 'eachLine', 'every', 'find', 'findAll', 'flatten',
     26 	'getAt', 'getErr', 'getIn', 'getOut', 'getText', 'grep', 'immutable', 'inject', 'inspect',
     27 	'intersect', 'invokeMethods', 'isCase', 'join', 'leftShift', 'minus', 'multiply',
     28 	'newInputStream', 'newOutputStream', 'newPrintWriter', 'newReader', 'newWriter', 'next', 'plus',
     29 	'pop', 'power', 'previous', 'print', 'println', 'push', 'putAt', 'read', 'readBytes', 'readLines',
     30 	'reverse', 'reverseEach', 'round', 'size', 'sort', 'splitEachLine', 'step', 'subMap', 'times',
     31 	'toInteger', 'toList', 'tokenize', 'upto', 'waitForOrKill', 'withPrintWriter', 'withReader',
     32 	'withStream', 'withWriter', 'withWriterAppend', 'write', 'writeLine'
     33 }))
     34 
     35 -- Types.
     36 lex:add_rule('type', token(lexer.TYPE, word_match(
     37 	'boolean byte char class double float int interface long short void')))
     38 
     39 -- Identifiers.
     40 lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word))
     41 
     42 -- Comments.
     43 local line_comment = lexer.to_eol('//', true)
     44 local block_comment = lexer.range('/*', '*/')
     45 lex:add_rule('comment', token(lexer.COMMENT, line_comment + block_comment))
     46 
     47 -- Strings.
     48 local sq_str = lexer.range("'")
     49 local dq_str = lexer.range('"')
     50 local tq_str = lexer.range("'''") + lexer.range('"""')
     51 local string = token(lexer.STRING, tq_str + sq_str + dq_str)
     52 local regex_str = lexer.after_set('=~|!<>+-*?&,:;([{', lexer.range('/', true))
     53 local regex = token(lexer.REGEX, regex_str)
     54 lex:add_rule('string', string + regex)
     55 
     56 -- Numbers.
     57 lex:add_rule('number', token(lexer.NUMBER, lexer.number))
     58 
     59 -- Operators.
     60 lex:add_rule('operator', token(lexer.OPERATOR, S('=~|!<>+-/*?&.,:;()[]{}')))
     61 
     62 -- Fold points.
     63 lex:add_fold_point(lexer.OPERATOR, '{', '}')
     64 lex:add_fold_point(lexer.COMMENT, '/*', '*/')
     65 
     66 lexer.property['scintillua.comment'] = '//'
     67 
     68 return lex