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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

fantom.lua (2814B)

    

  1. -- Copyright 2018-2024 Simeon Maryasin (MarSoft). See LICENSE.
  2. -- Fantom LPeg lexer.
  3. -- Based on Java LPeg lexer by Mitchell and Vim's Fantom syntax.
  5. local lexer = require('lexer')
  6. local token, word_match = lexer.token, lexer.word_match
  7. local P, S = lpeg.P, lpeg.S
  9. local lex = lexer.new('fantom')
  11. -- Whitespace.
  12. local ws = token(lexer.WHITESPACE, lexer.space^1)
  13. lex:add_rule('whitespace', ws)
  15. -- Classes.
  16. local type = token(lexer.TYPE, lexer.word)
  17. lex:add_rule('class_sequence',
  18.   token(lexer.KEYWORD, 'class') * ws * type * ( -- at most one inheritance spec
  19.   ws * token(lexer.OPERATOR, ':') * ws * type *
  20.     ( -- at least 0 (i.e. any number) of additional classes
  21.     ws^-1 * token(lexer.OPERATOR, ',') * ws^-1 * type)^0)^-1)
  23. -- Keywords.
  24. lex:add_rule('keyword', token(lexer.KEYWORD, word_match{
  25.   'using', 'native', -- external
  26.   'goto', 'void', 'serializable', 'volatile', -- error
  27.   'if', 'else', 'switch', -- conditional
  28.   'do', 'while', 'for', 'foreach', 'each', -- repeat
  29.   'true', 'false', -- boolean
  30.   'null', -- constant
  31.   'this', 'super', -- typedef
  32.   'new', 'is', 'isnot', 'as', -- operator
  33.   'plus', 'minus', 'mult', 'div', 'mod', 'get', 'set', 'slice', 'lshift', 'rshift', 'and', 'or',
  34.   'xor', 'inverse', 'negate', --
  35.   'increment', 'decrement', 'equals', 'compare', -- long operator
  36.   'return', -- stmt
  37.   'static', 'const', 'final', -- storage class
  38.   'virtual', 'override', 'once', -- slot
  39.   'readonly', -- field
  40.   'throw', 'try', 'catch', 'finally', -- exceptions
  41.   'assert', -- assert
  42.   'class', 'enum', 'mixin', -- typedef
  43.   'break', 'continue', -- branch
  44.   'default', 'case', -- labels
  45.   'public', 'internal', 'protected', 'private', 'abstract' -- scope decl
  46. }))
  48. -- Types.
  49. lex:add_rule('type', token(lexer.TYPE, word_match(
  50.   'Void Bool Int Float Decimal Str Duration Uri Type Range List Map Obj Err Env')))
  52. -- Functions.
  53. -- lex:add_rule('function', token(lexer.FUNCTION, lexer.word) * #P('('))
  55. -- Identifiers.
  56. lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word))
  58. -- Strings.
  59. local sq_str = lexer.range("'", true)
  60. local dq_str = lexer.range('"', true)
  61. local bq_str = lexer.range('`', true)
  62. lex:add_rule('string', token(lexer.STRING, sq_str + dq_str + bq_str))
  64. -- Comments.
  65. local line_comment = lexer.to_eol('//', true)
  66. local block_comment = lexer.range('/*', '*/')
  67. lex:add_rule('comment', token(lexer.COMMENT, line_comment + block_comment))
  69. -- Numbers.
  70. lex:add_rule('number', token(lexer.NUMBER, lexer.number * S('LlFfDd')^-1))
  72. -- Operators.
  73. lex:add_rule('operator', token(lexer.OPERATOR, S('+-/*%<>!=^&|?~:;.()[]{}#')))
  75. -- Annotations.
  76. lex:add_rule('facet', token(lexer.ANNOTATION, '@' * lexer.word))
  78. -- Fold points.
  79. lex:add_fold_point(lexer.OPERATOR, '{', '}')
  80. lex:add_fold_point(lexer.COMMENT, '/*', '*/')
  82. lexer.property['scintillua.comment'] = '//'
  84. return lex