414 lines
16 KiB
Python
414 lines
16 KiB
Python
from __future__ import print_function, division, absolute_import
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from __future__ import unicode_literals
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from fontTools.feaLib.lexer import LexerError
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from fontTools.feaLib.parser import Parser, ParserError, SymbolTable
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from fontTools.misc.py23 import *
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import fontTools.feaLib.ast as ast
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import codecs
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import os
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import shutil
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import sys
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import tempfile
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import unittest
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class ParserTest(unittest.TestCase):
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def __init__(self, methodName):
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unittest.TestCase.__init__(self, methodName)
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# Python 3 renamed assertRaisesRegexp to assertRaisesRegex,
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# and fires deprecation warnings if a program uses the old name.
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if not hasattr(self, "assertRaisesRegex"):
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self.assertRaisesRegex = self.assertRaisesRegexp
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def test_anchordef(self):
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[foo] = self.parse("anchorDef 123 456 foo;").statements
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self.assertEqual(type(foo), ast.AnchorDefinition)
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self.assertEqual(foo.name, "foo")
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self.assertEqual(foo.x, 123)
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self.assertEqual(foo.y, 456)
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self.assertEqual(foo.contourpoint, None)
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def test_anchordef_contourpoint(self):
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[foo] = self.parse("anchorDef 123 456 contourpoint 5 foo;").statements
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self.assertEqual(type(foo), ast.AnchorDefinition)
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self.assertEqual(foo.name, "foo")
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self.assertEqual(foo.x, 123)
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self.assertEqual(foo.y, 456)
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self.assertEqual(foo.contourpoint, 5)
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def test_glyphclass(self):
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[gc] = self.parse("@dash = [endash emdash figuredash];").statements
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self.assertEqual(gc.name, "dash")
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self.assertEqual(gc.glyphs, {"endash", "emdash", "figuredash"})
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def test_glyphclass_bad(self):
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self.assertRaisesRegex(
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ParserError,
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"Expected glyph name, glyph range, or glyph class reference",
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self.parse, "@bad = [a 123];")
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def test_glyphclass_duplicate(self):
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self.assertRaisesRegex(
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ParserError, "Glyph class @dup already defined",
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self.parse, "@dup = [a b]; @dup = [x];")
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def test_glyphclass_empty(self):
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[gc] = self.parse("@empty_set = [];").statements
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self.assertEqual(gc.name, "empty_set")
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self.assertEqual(gc.glyphs, set())
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def test_glyphclass_equality(self):
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[foo, bar] = self.parse("@foo = [a b]; @bar = @foo;").statements
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self.assertEqual(foo.glyphs, {"a", "b"})
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self.assertEqual(bar.glyphs, {"a", "b"})
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def test_glyphclass_range_uppercase(self):
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[gc] = self.parse("@swashes = [X.swash-Z.swash];").statements
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self.assertEqual(gc.name, "swashes")
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self.assertEqual(gc.glyphs, {"X.swash", "Y.swash", "Z.swash"})
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def test_glyphclass_range_lowercase(self):
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[gc] = self.parse("@defg.sc = [d.sc-g.sc];").statements
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self.assertEqual(gc.name, "defg.sc")
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self.assertEqual(gc.glyphs, {"d.sc", "e.sc", "f.sc", "g.sc"})
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def test_glyphclass_range_digit1(self):
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[gc] = self.parse("@range = [foo.2-foo.5];").statements
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self.assertEqual(gc.glyphs, {"foo.2", "foo.3", "foo.4", "foo.5"})
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def test_glyphclass_range_digit2(self):
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[gc] = self.parse("@range = [foo.09-foo.11];").statements
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self.assertEqual(gc.glyphs, {"foo.09", "foo.10", "foo.11"})
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def test_glyphclass_range_digit3(self):
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[gc] = self.parse("@range = [foo.123-foo.125];").statements
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self.assertEqual(gc.glyphs, {"foo.123", "foo.124", "foo.125"})
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def test_glyphclass_range_bad(self):
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self.assertRaisesRegex(
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ParserError,
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"Bad range: \"a\" and \"foobar\" should have the same length",
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self.parse, "@bad = [a-foobar];")
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self.assertRaisesRegex(
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ParserError, "Bad range: \"A.swash-z.swash\"",
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self.parse, "@bad = [A.swash-z.swash];")
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self.assertRaisesRegex(
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ParserError, "Start of range must be smaller than its end",
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self.parse, "@bad = [B.swash-A.swash];")
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self.assertRaisesRegex(
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ParserError, "Bad range: \"foo.1234-foo.9876\"",
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self.parse, "@bad = [foo.1234-foo.9876];")
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def test_glyphclass_range_mixed(self):
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[gc] = self.parse("@range = [a foo.09-foo.11 X.sc-Z.sc];").statements
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self.assertEqual(gc.glyphs, {
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"a", "foo.09", "foo.10", "foo.11", "X.sc", "Y.sc", "Z.sc"
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})
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def test_glyphclass_reference(self):
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[vowels_lc, vowels_uc, vowels] = self.parse(
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"@Vowels.lc = [a e i o u]; @Vowels.uc = [A E I O U];"
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"@Vowels = [@Vowels.lc @Vowels.uc y Y];").statements
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self.assertEqual(vowels_lc.glyphs, set(list("aeiou")))
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self.assertEqual(vowels_uc.glyphs, set(list("AEIOU")))
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self.assertEqual(vowels.glyphs, set(list("aeiouyAEIOUY")))
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self.assertRaisesRegex(
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ParserError, "Unknown glyph class @unknown",
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self.parse, "@bad = [@unknown];")
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def test_glyphclass_scoping(self):
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[foo, liga, smcp] = self.parse(
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"@foo = [a b];"
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"feature liga { @bar = [@foo l]; } liga;"
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"feature smcp { @bar = [@foo s]; } smcp;"
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).statements
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self.assertEqual(foo.glyphs, {"a", "b"})
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self.assertEqual(liga.statements[0].glyphs, {"a", "b", "l"})
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self.assertEqual(smcp.statements[0].glyphs, {"a", "b", "s"})
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def test_ignore_sub(self):
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doc = self.parse("feature test {ignore sub e t' c;} test;")
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s = doc.statements[0].statements[0]
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self.assertEqual(type(s), ast.IgnoreSubstitutionRule)
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self.assertEqual(s.prefix, [{"e"}])
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self.assertEqual(s.glyphs, [{"t"}])
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self.assertEqual(s.suffix, [{"c"}])
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def test_ignore_substitute(self):
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doc = self.parse(
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"feature test {"
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" ignore substitute f [a e] d' [a u]' [e y];"
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"} test;")
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s = doc.statements[0].statements[0]
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self.assertEqual(type(s), ast.IgnoreSubstitutionRule)
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self.assertEqual(s.prefix, [{"f"}, {"a", "e"}])
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self.assertEqual(s.glyphs, [{"d"}, {"a", "u"}])
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self.assertEqual(s.suffix, [{"e", "y"}])
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def test_language(self):
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doc = self.parse("feature test {language DEU;} test;")
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s = doc.statements[0].statements[0]
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self.assertEqual(type(s), ast.LanguageStatement)
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self.assertEqual(s.language, "DEU")
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self.assertTrue(s.include_default)
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self.assertFalse(s.required)
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def test_language_exclude_dflt(self):
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doc = self.parse("feature test {language DEU exclude_dflt;} test;")
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s = doc.statements[0].statements[0]
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self.assertEqual(type(s), ast.LanguageStatement)
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self.assertEqual(s.language, "DEU")
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self.assertFalse(s.include_default)
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self.assertFalse(s.required)
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def test_language_exclude_dflt_required(self):
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doc = self.parse("feature test {"
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" language DEU exclude_dflt required;"
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"} test;")
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s = doc.statements[0].statements[0]
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self.assertEqual(type(s), ast.LanguageStatement)
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self.assertEqual(s.language, "DEU")
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self.assertFalse(s.include_default)
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self.assertTrue(s.required)
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def test_language_include_dflt(self):
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doc = self.parse("feature test {language DEU include_dflt;} test;")
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s = doc.statements[0].statements[0]
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self.assertEqual(type(s), ast.LanguageStatement)
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self.assertEqual(s.language, "DEU")
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self.assertTrue(s.include_default)
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self.assertFalse(s.required)
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def test_language_include_dflt_required(self):
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doc = self.parse("feature test {"
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" language DEU include_dflt required;"
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"} test;")
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s = doc.statements[0].statements[0]
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self.assertEqual(type(s), ast.LanguageStatement)
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self.assertEqual(s.language, "DEU")
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self.assertTrue(s.include_default)
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self.assertTrue(s.required)
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def test_lookup_block(self):
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[lookup] = self.parse("lookup Ligatures {} Ligatures;").statements
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self.assertEqual(lookup.name, "Ligatures")
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self.assertFalse(lookup.use_extension)
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def test_lookup_block_useExtension(self):
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[lookup] = self.parse("lookup Foo useExtension {} Foo;").statements
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self.assertEqual(lookup.name, "Foo")
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self.assertTrue(lookup.use_extension)
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def test_lookup_block_name_mismatch(self):
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self.assertRaisesRegex(
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ParserError, 'Expected "Foo"',
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self.parse, "lookup Foo {} Bar;")
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def test_lookup_block_with_horizontal_valueRecordDef(self):
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doc = self.parse("feature liga {"
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" lookup look {"
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" valueRecordDef 123 foo;"
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" } look;"
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"} liga;")
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[liga] = doc.statements
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[look] = liga.statements
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[foo] = look.statements
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self.assertEqual(foo.value.xAdvance, 123)
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self.assertEqual(foo.value.yAdvance, 0)
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def test_lookup_block_with_vertical_valueRecordDef(self):
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doc = self.parse("feature vkrn {"
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" lookup look {"
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" valueRecordDef 123 foo;"
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" } look;"
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"} vkrn;")
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[vkrn] = doc.statements
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[look] = vkrn.statements
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[foo] = look.statements
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self.assertEqual(foo.value.xAdvance, 0)
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self.assertEqual(foo.value.yAdvance, 123)
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def test_lookup_reference(self):
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[foo, bar] = self.parse("lookup Foo {} Foo;"
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"feature Bar {lookup Foo;} Bar;").statements
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[ref] = bar.statements
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self.assertEqual(type(ref), ast.LookupReferenceStatement)
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self.assertEqual(ref.lookup, foo)
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def test_lookup_reference_unknown(self):
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self.assertRaisesRegex(
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ParserError, 'Unknown lookup "Huh"',
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self.parse, "feature liga {lookup Huh;} liga;")
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def test_script(self):
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doc = self.parse("feature test {script cyrl;} test;")
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s = doc.statements[0].statements[0]
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self.assertEqual(type(s), ast.ScriptStatement)
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self.assertEqual(s.script, "cyrl")
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def test_substitute_single_format_a(self): # GSUB LookupType 1
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doc = self.parse("feature smcp {substitute a by a.sc;} smcp;")
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sub = doc.statements[0].statements[0]
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self.assertEqual(sub.old_prefix, [])
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self.assertEqual(sub.old, [{"a"}])
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self.assertEqual(sub.old_suffix, [])
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self.assertEqual(sub.new, [{"a.sc"}])
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self.assertEqual(sub.lookups, [None])
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def test_substitute_single_format_b(self): # GSUB LookupType 1
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doc = self.parse(
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"feature smcp {"
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" substitute [one.fitted one.oldstyle] by one;"
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"} smcp;")
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sub = doc.statements[0].statements[0]
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self.assertEqual(sub.old_prefix, [])
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self.assertEqual(sub.old, [{"one.fitted", "one.oldstyle"}])
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self.assertEqual(sub.old_suffix, [])
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self.assertEqual(sub.new, [{"one"}])
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self.assertEqual(sub.lookups, [None])
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def test_substitute_single_format_c(self): # GSUB LookupType 1
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doc = self.parse(
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"feature smcp {"
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" substitute [a-d] by [A.sc-D.sc];"
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"} smcp;")
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sub = doc.statements[0].statements[0]
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self.assertEqual(sub.old_prefix, [])
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self.assertEqual(sub.old, [{"a", "b", "c", "d"}])
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self.assertEqual(sub.old_suffix, [])
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self.assertEqual(sub.new, [{"A.sc", "B.sc", "C.sc", "D.sc"}])
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self.assertEqual(sub.lookups, [None])
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def test_substitute_ligature(self): # GSUB LookupType 4
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doc = self.parse("feature liga {substitute f f i by f_f_i;} liga;")
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sub = doc.statements[0].statements[0]
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self.assertEqual(sub.old_prefix, [])
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self.assertEqual(sub.old, [{"f"}, {"f"}, {"i"}])
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self.assertEqual(sub.old_suffix, [])
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self.assertEqual(sub.new, [{"f_f_i"}])
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self.assertEqual(sub.lookups, [None, None, None])
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def test_substitute_lookups(self):
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doc = Parser(self.getpath("spec5fi.fea")).parse()
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[ligs, sub, feature] = doc.statements
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self.assertEqual(feature.statements[0].lookups, [ligs, None, sub])
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self.assertEqual(feature.statements[1].lookups, [ligs, None, sub])
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def test_substitute_missing_by(self):
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self.assertRaisesRegex(
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ParserError, 'Expected "by" or explicit lookup references',
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self.parse, "feature liga {substitute f f i;} liga;")
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def test_subtable(self):
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doc = self.parse("feature test {subtable;} test;")
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s = doc.statements[0].statements[0]
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self.assertEqual(type(s), ast.SubtableStatement)
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def test_valuerecord_format_a_horizontal(self):
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doc = self.parse("feature liga {valueRecordDef 123 foo;} liga;")
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value = doc.statements[0].statements[0].value
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self.assertEqual(value.xPlacement, 0)
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self.assertEqual(value.yPlacement, 0)
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self.assertEqual(value.xAdvance, 123)
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self.assertEqual(value.yAdvance, 0)
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def test_valuerecord_format_a_vertical(self):
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doc = self.parse("feature vkrn {valueRecordDef 123 foo;} vkrn;")
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value = doc.statements[0].statements[0].value
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self.assertEqual(value.xPlacement, 0)
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self.assertEqual(value.yPlacement, 0)
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self.assertEqual(value.xAdvance, 0)
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self.assertEqual(value.yAdvance, 123)
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def test_valuerecord_format_b(self):
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doc = self.parse("feature liga {valueRecordDef <1 2 3 4> foo;} liga;")
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value = doc.statements[0].statements[0].value
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self.assertEqual(value.xPlacement, 1)
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self.assertEqual(value.yPlacement, 2)
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self.assertEqual(value.xAdvance, 3)
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self.assertEqual(value.yAdvance, 4)
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def test_valuerecord_named(self):
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doc = self.parse("valueRecordDef <1 2 3 4> foo;"
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"feature liga {valueRecordDef <foo> bar;} liga;")
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value = doc.statements[1].statements[0].value
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self.assertEqual(value.xPlacement, 1)
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self.assertEqual(value.yPlacement, 2)
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self.assertEqual(value.xAdvance, 3)
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self.assertEqual(value.yAdvance, 4)
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def test_valuerecord_named_unknown(self):
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self.assertRaisesRegex(
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ParserError, "Unknown valueRecordDef \"unknown\"",
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self.parse, "valueRecordDef <unknown> foo;")
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def test_valuerecord_scoping(self):
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[foo, liga, smcp] = self.parse(
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"valueRecordDef 789 foo;"
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"feature liga {valueRecordDef <foo> bar;} liga;"
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"feature smcp {valueRecordDef <foo> bar;} smcp;"
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).statements
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self.assertEqual(foo.value.xAdvance, 789)
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self.assertEqual(liga.statements[0].value.xAdvance, 789)
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self.assertEqual(smcp.statements[0].value.xAdvance, 789)
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def test_languagesystem(self):
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[langsys] = self.parse("languagesystem latn DEU;").statements
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self.assertEqual(langsys.script, "latn")
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self.assertEqual(langsys.language, "DEU ")
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self.assertRaisesRegex(
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ParserError, "Expected ';'",
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self.parse, "languagesystem latn DEU")
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self.assertRaisesRegex(
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ParserError, "longer than 4 characters",
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self.parse, "languagesystem foobar DEU")
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self.assertRaisesRegex(
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ParserError, "longer than 4 characters",
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self.parse, "languagesystem latn FOOBAR")
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def test_feature_block(self):
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[liga] = self.parse("feature liga {} liga;").statements
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self.assertEqual(liga.name, "liga")
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def setUp(self):
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self.tempdir = None
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self.num_tempfiles = 0
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def tearDown(self):
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if self.tempdir:
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shutil.rmtree(self.tempdir)
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def parse(self, text):
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if not self.tempdir:
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self.tempdir = tempfile.mkdtemp()
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self.num_tempfiles += 1
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path = os.path.join(self.tempdir, "tmp%d.fea" % self.num_tempfiles)
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with codecs.open(path, "wb", "utf-8") as outfile:
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outfile.write(text)
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return Parser(path).parse()
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@staticmethod
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def getpath(testfile):
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path, _ = os.path.split(__file__)
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return os.path.join(path, "testdata", testfile)
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class SymbolTableTest(unittest.TestCase):
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def test_scopes(self):
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symtab = SymbolTable()
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symtab.define("foo", 23)
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self.assertEqual(symtab.resolve("foo"), 23)
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symtab.enter_scope()
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self.assertEqual(symtab.resolve("foo"), 23)
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symtab.define("foo", 42)
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self.assertEqual(symtab.resolve("foo"), 42)
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symtab.exit_scope()
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self.assertEqual(symtab.resolve("foo"), 23)
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def test_resolve_undefined(self):
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self.assertEqual(SymbolTable().resolve("abc"), None)
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if __name__ == "__main__":
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unittest.main()
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