Merge pull request #35 from chevah/parse-from-stream
Parse content from a stream.
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commit
19ed65645d
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@ -11,6 +11,7 @@
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"""
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import re
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import ply.lex as lex
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from six import string_types
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from lesscpy.lib import dom
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from lesscpy.lib import css
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@ -460,12 +461,16 @@ class LessLexer:
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self.lexer.input(f.read())
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return self
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def input(self, filename):
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def input(self, file):
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"""
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Wrapper for file
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Load lexer with content from `file` which can be a path or a file
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like object.
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"""
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with open(filename) as f:
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self.lexer.input(f.read())
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if isinstance(file, string_types):
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with open(file) as f:
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self.lexer.input(f.read())
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else:
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self.lexer.input(file.read())
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def token(self):
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"""
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@ -77,18 +77,33 @@ class LessParser(object):
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self.result = None
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self.target = None
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def parse(self, filename='', debuglevel=0):
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def parse(self, filename=None, file=None, debuglevel=0):
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""" Parse file.
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kwargs:
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filename (str): File to parse
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debuglevel (int): Parser debuglevel
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"""
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self.scope.push()
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if not file:
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# We use a path.
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file = filename
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else:
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# We use a stream and try to extract the name from the stream.
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if hasattr(file, 'name'):
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if filename is not None:
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raise AssertionError(
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'names of file and filename are in conflict')
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filename = file.name()
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else:
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filename = '(stream)'
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self.target = filename
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if self.verbose:
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print('Compiling target: %s' % filename, file=sys.stderr)
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self.scope.push()
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self.target = filename
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self.result = self.parser.parse(
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filename, lexer=self.lex, debug=debuglevel)
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file, lexer=self.lex, debug=debuglevel)
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self.post_parse()
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def post_parse(self):
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@ -1 +1,2 @@
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ply
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six
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@ -0,0 +1,47 @@
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"""
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Unit tests for the lexer.
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"""
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from tempfile import NamedTemporaryFile
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import unittest
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from six import StringIO
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from lesscpy.lessc.lexer import LessLexer
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class TestLessLexer(unittest.TestCase):
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"""
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Unit tests for LessLexer
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"""
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def setUp(self):
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self.lexer = LessLexer()
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def test_input_stream(self):
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"""
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It can load content from a string.
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"""
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file = StringIO("""
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@simple-var: 1;
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""")
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self.lexer.input(file)
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token = self.lexer.token()
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self.assertEqual('@simple-var', token.value)
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def test_input_path(self):
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"""
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It can load content from a path.
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"""
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file = NamedTemporaryFile()
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file.write(b"""
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@simple-var: 1;
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""")
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file.seek(0)
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self.lexer.input(file.name)
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token = self.lexer.token()
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self.assertEqual('@simple-var', token.value)
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@ -0,0 +1,35 @@
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"""
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Unit test for the parser.
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"""
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import unittest
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from six import StringIO
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from lesscpy.lessc.parser import LessParser
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class TestLessParser(unittest.TestCase):
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"""
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Unit tests for LessParser.
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"""
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def setUp(self):
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self.parser = LessParser()
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def test_parse_stream(self):
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"""
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It can parse input from a file stream.
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"""
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stream = StringIO("""
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@nice-blue: #5B83AD;
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""")
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self.parser.parse(file=stream)
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# A single object is parser which is the expected variable.
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self.assertEqual(1, len(self.parser.result))
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# This is a stream without a name so it sets default name.
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self.assertEqual('(stream)', self.parser.target)
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variable = self.parser.result[0]
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self.assertEqual('@nice-blue', variable.name)
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self.assertEqual(['#5b83ad'], variable.value)
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