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88 lines
3 KiB
Python
88 lines
3 KiB
Python
# tokenizer.py
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#
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# Copyright 2021 James Westman <james@jwestman.net>
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#
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# This file is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as
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# published by the Free Software Foundation; either version 3 of the
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# License, or (at your option) any later version.
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#
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# This file is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# SPDX-License-Identifier: LGPL-3.0-or-later
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import unittest
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from blueprintcompiler.errors import PrintableError
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from blueprintcompiler.tokenizer import Token, TokenType, tokenize
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class TestTokenizer(unittest.TestCase):
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def assert_tokenize(self, string: str, expect: list[Token]):
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try:
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tokens = tokenize(string)
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self.assertEqual(len(tokens), len(expect))
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for token, (type, token_str) in zip(tokens, expect):
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self.assertEqual(token.type, type)
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self.assertEqual(str(token), token_str)
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except PrintableError as e: # pragma: no cover
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e.pretty_print("<test input>", string)
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raise e
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def test_basic(self):
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self.assert_tokenize(
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"ident(){}; \n <<+>>*/=",
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[
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(TokenType.IDENT, "ident"),
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(TokenType.PUNCTUATION, "("),
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(TokenType.PUNCTUATION, ")"),
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(TokenType.PUNCTUATION, "{"),
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(TokenType.PUNCTUATION, "}"),
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(TokenType.PUNCTUATION, ";"),
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(TokenType.WHITESPACE, " \n "),
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(TokenType.OP, "<<"),
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(TokenType.OP, "+"),
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(TokenType.OP, ">>"),
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(TokenType.OP, "*"),
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(TokenType.OP, "/"),
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(TokenType.OP, "="),
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(TokenType.EOF, ""),
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],
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)
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def test_quotes(self):
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self.assert_tokenize(
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r'"this is a \n string""this is \\another \"string\""',
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[
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(TokenType.QUOTED, r'"this is a \n string"'),
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(TokenType.QUOTED, r'"this is \\another \"string\""'),
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(TokenType.EOF, ""),
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],
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)
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def test_comments(self):
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self.assert_tokenize(
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"/* \n \\n COMMENT /* */",
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[
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(TokenType.COMMENT, "/* \n \\n COMMENT /* */"),
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(TokenType.EOF, ""),
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],
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)
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self.assert_tokenize(
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"line // comment\nline",
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[
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(TokenType.IDENT, "line"),
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(TokenType.WHITESPACE, " "),
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(TokenType.COMMENT, "// comment"),
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(TokenType.WHITESPACE, "\n"),
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(TokenType.IDENT, "line"),
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(TokenType.EOF, ""),
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],
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)
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