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80 lines
1.7 KiB
80 lines
1.7 KiB
#!/usr/bin/python3 -tt |
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# Copyright 2012 Jussi Pakkanen |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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import ply.lex as lex |
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import ply.yacc as yacc |
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tokens = ['LPAREN', |
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'RPAREN', |
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'LBRACKET', |
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'RBRACKET', |
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'LBRACE', |
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'RBRACE', |
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'VARIABLE', |
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'COMMENT', |
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'EQUALS', |
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'COMMA', |
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'DOT', |
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'STRING', |
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'EOL_CONTINUE', |
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'EOL', |
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] |
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t_EQUALS = '=' |
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t_LPAREN = '\(' |
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t_RPAREN = '\)' |
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t_LBRACKET = '\[' |
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t_RBRACKET = '\]' |
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t_LBRACE = '\{' |
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t_RBRACE = '\}' |
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t_VARIABLE = '[a-zA-Z][_0-9a-zA-Z]*' |
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t_COMMENT = '\#[^\n]*' |
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t_COMMA = ',' |
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t_DOT = '\.' |
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t_STRING = "'[^']*'" |
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t_ignore = ' \t' |
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def t_EOL(t): |
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r'\n' |
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t.lexer.lineno += 1 |
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return t |
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def t_EOL_CONTINUE(t): |
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r'\\[ \t]*\n' |
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t.lexer.lineno += 1 |
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def t_error(t): |
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print("Illegal character '%s'" % t.value[0]) |
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t.lexer.skip(1) |
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def test_lexer(): |
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s = """hello = (something) # this = (that) |
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two = ['file1', 'file2'] |
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function(h) { stuff } |
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obj.method(lll, \\ |
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'string') |
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""" |
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lexer = lex.lex() |
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lexer.input(s) |
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while True: |
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tok = lexer.token() |
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if not tok: |
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break |
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print(tok) |
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if __name__ == '__main__': |
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test_lexer() |