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- import unittest
- from Cython.Compiler import PyrexTypes as pt
- from Cython.Compiler.ExprNodes import NameNode
- from Cython.Compiler.PyrexTypes import CFuncTypeArg
- def cfunctype(*arg_types):
- return pt.CFuncType(pt.c_int_type,
- [ CFuncTypeArg("name", arg_type, None) for arg_type in arg_types ])
- def cppclasstype(name, base_classes):
- return pt.CppClassType(name, None, 'CPP_'+name, base_classes)
- class SignatureMatcherTest(unittest.TestCase):
- """
- Test the signature matching algorithm for overloaded signatures.
- """
- def assertMatches(self, expected_type, arg_types, functions):
- match = pt.best_match(arg_types, functions)
- if expected_type is not None:
- self.assertNotEqual(None, match)
- self.assertEqual(expected_type, match.type)
- def test_cpp_reference_single_arg(self):
- function_types = [
- cfunctype(pt.CReferenceType(pt.c_int_type)),
- cfunctype(pt.CReferenceType(pt.c_long_type)),
- cfunctype(pt.CReferenceType(pt.c_double_type)),
- ]
- functions = [ NameNode(None, type=t) for t in function_types ]
- self.assertMatches(function_types[0], [pt.c_int_type], functions)
- self.assertMatches(function_types[1], [pt.c_long_type], functions)
- self.assertMatches(function_types[2], [pt.c_double_type], functions)
- def test_cpp_reference_two_args(self):
- function_types = [
- cfunctype(
- pt.CReferenceType(pt.c_int_type), pt.CReferenceType(pt.c_long_type)),
- cfunctype(
- pt.CReferenceType(pt.c_long_type), pt.CReferenceType(pt.c_long_type)),
- ]
- functions = [ NameNode(None, type=t) for t in function_types ]
- self.assertMatches(function_types[0], [pt.c_int_type, pt.c_long_type], functions)
- self.assertMatches(function_types[1], [pt.c_long_type, pt.c_long_type], functions)
- self.assertMatches(function_types[1], [pt.c_long_type, pt.c_int_type], functions)
- def test_cpp_reference_cpp_class(self):
- classes = [ cppclasstype("Test%d"%i, []) for i in range(2) ]
- function_types = [
- cfunctype(pt.CReferenceType(classes[0])),
- cfunctype(pt.CReferenceType(classes[1])),
- ]
- functions = [ NameNode(None, type=t) for t in function_types ]
- self.assertMatches(function_types[0], [classes[0]], functions)
- self.assertMatches(function_types[1], [classes[1]], functions)
- def test_cpp_reference_cpp_class_and_int(self):
- classes = [ cppclasstype("Test%d"%i, []) for i in range(2) ]
- function_types = [
- cfunctype(pt.CReferenceType(classes[0]), pt.c_int_type),
- cfunctype(pt.CReferenceType(classes[0]), pt.c_long_type),
- cfunctype(pt.CReferenceType(classes[1]), pt.c_int_type),
- cfunctype(pt.CReferenceType(classes[1]), pt.c_long_type),
- ]
- functions = [ NameNode(None, type=t) for t in function_types ]
- self.assertMatches(function_types[0], [classes[0], pt.c_int_type], functions)
- self.assertMatches(function_types[1], [classes[0], pt.c_long_type], functions)
- self.assertMatches(function_types[2], [classes[1], pt.c_int_type], functions)
- self.assertMatches(function_types[3], [classes[1], pt.c_long_type], functions)
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