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oasis-root

Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

xtend.lua (2934B)

    

  1. -- Copyright (c) 2014-2024 Piotr Orzechowski [drzewo.org]. See LICENSE.
  2. -- Xtend LPeg lexer.
  4. local lexer = require('lexer')
  5. local token, word_match = lexer.token, lexer.word_match
  6. local P, S = lpeg.P, lpeg.S
  8. local lex = lexer.new('xtend')
  10. -- Whitespace.
  11. local ws = token(lexer.WHITESPACE, lexer.space^1)
  12. lex:add_rule('whitespace', ws)
  14. -- Classes.
  15. lex:add_rule('class', token(lexer.KEYWORD, 'class') * ws^1 * token(lexer.CLASS, lexer.word))
  17. -- Keywords.
  18. lex:add_rule('keyword', token(lexer.KEYWORD, word_match{
  19.   -- General.
  20.   'abstract', 'annotation', 'as', 'case', 'catch', 'class', 'create', 'def', 'default', 'dispatch',
  21.   'do', 'else', 'enum', 'extends', 'extension', 'final', 'finally', 'for', 'if', 'implements',
  22.   'import', 'interface', 'instanceof', 'it', 'new', 'override', 'package', 'private', 'protected',
  23.   'public', 'return', 'self', 'static', 'super', 'switch', 'synchronized', 'this', 'throw',
  24.   'throws', 'try', 'typeof', 'val', 'var', 'while',
  25.   -- Templates.
  26.   'AFTER', 'BEFORE', 'ENDFOR', 'ENDIF', 'FOR', 'IF', 'SEPARATOR',
  27.   -- Literals.
  28.   'true', 'false', 'null'
  29. }))
  31. -- Types.
  32. lex:add_rule('type', token(lexer.TYPE, word_match{
  33.   'boolean', 'byte', 'char', 'double', 'float', 'int', 'long', 'short', 'void', 'Boolean', 'Byte',
  34.   'Character', 'Double', 'Float', 'Integer', 'Long', 'Short', 'String'
  35. }))
  37. -- Functions.
  38. lex:add_rule('function', token(lexer.FUNCTION, lexer.word) * #P('('))
  40. -- Identifiers.
  41. lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word))
  43. -- Templates.
  44. lex:add_rule('template', token(lexer.EMBEDDED, lexer.range("'''")))
  46. -- Strings.
  47. local sq_str = lexer.range("'", true)
  48. local dq_str = lexer.range('"', true)
  49. lex:add_rule('string', token(lexer.STRING, sq_str + dq_str))
  51. -- Comments.
  52. local line_comment = lexer.to_eol('//', true)
  53. local block_comment = lexer.range('/*', '*/')
  54. lex:add_rule('comment', token(lexer.COMMENT, line_comment + block_comment))
  56. -- Numbers.
  57. local small_suff = S('lL')
  58. local med_suff = S('bB') * S('iI')
  59. local large_suff = S('dD') + S('fF') + S('bB') * S('dD')
  60. local exp = S('eE') * lexer.digit^1
  62. local dec_inf = ('_' * lexer.digit^1)^0
  63. local hex_inf = ('_' * lexer.xdigit^1)^0
  64. local float_pref = lexer.digit^1 * '.' * lexer.digit^1
  65. local float_suff = exp^-1 * med_suff^-1 * large_suff^-1
  67. local dec = lexer.digit * dec_inf * (small_suff^-1 + float_suff)
  68. local hex = lexer.hex_num * hex_inf * P('#' * (small_suff + med_suff))^-1
  69. local float = float_pref * dec_inf * float_suff
  71. lex:add_rule('number', token(lexer.NUMBER, float + hex + dec))
  73. -- Annotations.
  74. lex:add_rule('annotation', token(lexer.ANNOTATION, '@' * lexer.word))
  76. -- Operators.
  77. lex:add_rule('operator', token(lexer.OPERATOR, S('+-/*%<>!=^&|?~:;.()[]{}#')))
  79. -- Error.
  80. lex:add_rule('error', token(lexer.ERROR, lexer.any))
  82. -- Fold points.
  83. lex:add_fold_point(lexer.OPERATOR, '{', '}')
  84. lex:add_fold_point(lexer.COMMENT, '/*', '*/')
  86. lexer.property['scintillua.comment'] = '//'
  88. return lex