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