68 lines
1.9 KiB
Python
68 lines
1.9 KiB
Python
# -*- coding: utf-8 -*-
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#######################################################################
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# Name: test_flags
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# Purpose: Test for parser flags
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# Author: Igor R. Dejanović <igor DOT dejanovic AT gmail DOT com>
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# Copyright: (c) 2014 Igor R. Dejanović <igor DOT dejanovic AT gmail DOT com>
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# License: MIT License
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#######################################################################
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from __future__ import unicode_literals
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import re
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import pytest
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# Grammar
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from arpeggio import ParserPython, Optional, EOF
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from arpeggio import RegExMatch as _
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from arpeggio import NoMatch
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def foo(): return 'r', bar, Optional(qux), baz, Optional(ham), Optional(buz), EOF
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def bar(): return 'BAR'
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def baz(): return _(r'1\w+')
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def buz(): return _(r'Aba*', ignore_case=True)
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def qux(): return _(r'/\*.*\*/', multiline=True)
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def ham(): return _(r'/\*.*\*/', re_flags=re.DOTALL) # equivalent to qux
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@pytest.fixture
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def parser_ci():
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return ParserPython(foo, ignore_case=True)
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@pytest.fixture
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def parser_nonci():
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return ParserPython(foo, ignore_case=False)
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def test_parse_tree_ci(parser_ci):
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input_str = "R bar 1baz"
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parse_tree = parser_ci.parse(input_str)
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assert parse_tree is not None
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def test_parse_tree_nonci(parser_nonci):
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input_str = "R bar 1baz"
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with pytest.raises(NoMatch):
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parser_nonci.parse(input_str)
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def test_flags_override(parser_nonci):
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# Parser is not case insensitive
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# But the buz match is.
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input_str = "r BAR 1baz abaaaaAAaaa"
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parse_tree = parser_nonci.parse(input_str)
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assert parse_tree is not None
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def test_multiline_comment(parser_nonci):
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input_str = "r BAR /*1baz\nabaaaaAAaaa\n*/1baz"
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parse_tree = parser_nonci.parse(input_str)
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assert parse_tree is not None
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def test_multiline_comment_by_re_flags(parser_nonci):
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input_str = "r BAR 1baz/*this\nis\nnot\nparsed*/"
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parse_tree = parser_nonci.parse(input_str)
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assert parse_tree is not None
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