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Diffstat (limited to 'lexlua/actionscript.lua')
-rw-r--r-- | lexlua/actionscript.lua | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/lexlua/actionscript.lua b/lexlua/actionscript.lua new file mode 100644 index 000000000..80d46a53c --- /dev/null +++ b/lexlua/actionscript.lua @@ -0,0 +1,59 @@ +-- Copyright 2006-2018 Mitchell mitchell.att.foicica.com. See License.txt. +-- Actionscript LPeg lexer. + +local lexer = require('lexer') +local token, word_match = lexer.token, lexer.word_match +local P, R, S = lpeg.P, lpeg.R, lpeg.S + +local lex = lexer.new('actionscript') + +-- Whitespace. +lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1)) + +-- Keywords. +lex:add_rule('keyword', token(lexer.KEYWORD, word_match[[ + break continue delete do else for function if in new on return this typeof var + void while with NaN Infinity false null true undefined + -- Reserved for future use. + abstract case catch class const debugger default export extends final finally + goto implements import instanceof interface native package private Void + protected public dynamic static super switch synchonized throw throws + transient try volatile +]])) + +-- Types. +lex:add_rule('type', token(lexer.TYPE, word_match[[ + Array Boolean Color Date Function Key MovieClip Math Mouse Number Object + Selection Sound String XML XMLNode XMLSocket + -- Reserved for future use. + boolean byte char double enum float int long short +]])) + +-- Identifiers. +lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word)) + +-- Strings. +local sq_str = lexer.delimited_range("'", true) +local dq_str = lexer.delimited_range('"', true) +local ml_str = '<![CDATA[' * (lexer.any - ']]>')^0 * ']]>' +lex:add_rule('string', token(lexer.STRING, sq_str + dq_str + ml_str)) + +-- Comments. +local line_comment = '//' * lexer.nonnewline^0 +local block_comment = '/*' * (lexer.any - '*/')^0 * P('*/')^-1 +lex:add_rule('comment', token(lexer.COMMENT, line_comment + block_comment)) + +-- Numbers. +lex:add_rule('number', token(lexer.NUMBER, (lexer.float + lexer.integer) * + S('LlUuFf')^-2)) + +-- Operators. +lex:add_rule('operator', token(lexer.OPERATOR, S('=!<>+-/*%&|^~.,;?()[]{}'))) + +-- Fold points. +lex:add_fold_point(lexer.OPERATOR, '{', '}') +lex:add_fold_point(lexer.COMMENT, '/*', '*/') +lex:add_fold_point(lexer.COMMENT, '//', lexer.fold_line_comments('//')) +lex:add_fold_point(lexer.STRING, '<![CDATA[', ']]>') + +return lex |