Google DeepMind
ecfe65242f
This change introduces an `nullable` flag to `ArrayType`, `PointerType`, and `FunctionParameterDecl`. The code generation process now parses function comments from `mujoco.h` to identify parameters marked as "Nullable" and sets this flag accordingly. PiperOrigin-RevId: 797870883 Change-Id: Ic7cac5a7a9c14177fbf97b8655c5c4809d4ef683
203 lines
7.6 KiB
Python
203 lines
7.6 KiB
Python
# Copyright 2022 DeepMind Technologies Limited
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ==============================================================================
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"""Tests for ast_nodes.py."""
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from absl.testing import absltest
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from . import ast_nodes
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class AstNodesTest(absltest.TestCase):
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def test_value_type(self):
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value_type = ast_nodes.ValueType('int')
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self.assertEqual(str(value_type), 'int')
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self.assertEqual(value_type.decl('var'), 'int var')
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const_value_type = ast_nodes.ValueType('double', is_const=True)
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self.assertEqual(str(const_value_type), 'const double')
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self.assertEqual(const_value_type.decl('var2'), 'const double var2')
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def test_pointer_type(self):
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pointer_type = ast_nodes.PointerType(ast_nodes.ValueType('int'))
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self.assertEqual(str(pointer_type), 'int *')
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self.assertEqual(pointer_type.decl('var'), 'int * var')
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const_pointer_type = ast_nodes.PointerType(
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ast_nodes.ValueType('double'), is_const=True)
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self.assertEqual(str(const_pointer_type), 'double * const')
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self.assertEqual(const_pointer_type.decl('var2'), 'double * const var2')
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pointer_to_const_type = ast_nodes.PointerType(
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ast_nodes.ValueType('float', is_const=True))
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self.assertEqual(str(pointer_to_const_type), 'const float *')
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self.assertEqual(pointer_to_const_type.decl('var3'), 'const float * var3')
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restrict_volatile_pointer_to_const_type = ast_nodes.PointerType(
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ast_nodes.ValueType('char', is_const=True),
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is_volatile=True, is_restrict=True)
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self.assertEqual(str(restrict_volatile_pointer_to_const_type),
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'const char * volatile restrict')
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self.assertEqual(
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restrict_volatile_pointer_to_const_type.decl('var4'),
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'const char * volatile restrict var4')
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pointer_to_array_type = ast_nodes.PointerType(
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ast_nodes.ArrayType(ast_nodes.ValueType('long'), (3,)))
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self.assertEqual(str(pointer_to_array_type), 'long (*)[3]')
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self.assertEqual(pointer_to_array_type.decl('var5'), 'long (* var5)[3]')
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const_pointer_to_array_type = ast_nodes.PointerType(
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ast_nodes.ArrayType(ast_nodes.ValueType('unsigned int'), (4,)),
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is_const=True)
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self.assertEqual(
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str(const_pointer_to_array_type), 'unsigned int (* const)[4]')
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self.assertEqual(
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const_pointer_to_array_type.decl('var6'),
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'unsigned int (* const var6)[4]')
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def test_array_type(self):
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array_type = ast_nodes.ArrayType(ast_nodes.ValueType('int'), (4,))
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self.assertEqual(str(array_type), 'int [4]')
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self.assertEqual(array_type.decl('var'), 'int var[4]')
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array_2d_type = ast_nodes.ArrayType(
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ast_nodes.ValueType('double', is_const=True), (2, 3))
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self.assertEqual(str(array_2d_type), 'const double [2][3]')
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self.assertEqual(array_2d_type.decl('var2'), 'const double var2[2][3]')
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array_to_pointer_type = ast_nodes.ArrayType(
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ast_nodes.PointerType(ast_nodes.ValueType('char', is_const=True)), (5,))
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self.assertEqual(str(array_to_pointer_type), 'const char * [5]')
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self.assertEqual(array_to_pointer_type.decl('var3'), 'const char * var3[5]')
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array_to_const_pointer_type = ast_nodes.ArrayType(
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ast_nodes.PointerType(ast_nodes.ValueType('float'), is_const=True),
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(7,))
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self.assertEqual(str(array_to_const_pointer_type), 'float * const [7]')
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self.assertEqual(
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array_to_const_pointer_type.decl('var4'), 'float * const var4[7]')
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def test_complex_type(self):
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complex_type = ast_nodes.ArrayType(
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extents=[9],
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inner_type=ast_nodes.PointerType(
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ast_nodes.PointerType(
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is_const=True,
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inner_type=ast_nodes.ArrayType(
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extents=[7],
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inner_type=ast_nodes.PointerType(
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is_const=True,
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inner_type=ast_nodes.PointerType(
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ast_nodes.ArrayType(
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extents=(3, 4),
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inner_type=ast_nodes.ValueType(
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'unsigned int', is_const=True)
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)
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)
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)
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)
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)
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)
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)
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self.assertEqual(str(complex_type),
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'const unsigned int (* * const (* const * [9])[7])[3][4]')
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self.assertEqual(
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complex_type.decl('var'),
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'const unsigned int (* * const (* const * var[9])[7])[3][4]')
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def test_struct_decl(self):
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struct = ast_nodes.StructDecl(
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name='mystruct',
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declname='struct mystruct_',
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fields=[
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ast_nodes.StructFieldDecl(
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name='foo',
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type=ast_nodes.ValueType('int'),
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doc='',
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)
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],
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)
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self.assertEqual(struct.decl('var'), 'mystruct var')
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def test_anonymous_struct_decl(self):
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struct = ast_nodes.AnonymousStructDecl(
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fields=[
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ast_nodes.StructFieldDecl(
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name='foo',
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type=ast_nodes.ValueType('int'),
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doc='',
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),
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ast_nodes.StructFieldDecl(
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name='bar',
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type=ast_nodes.ArrayType(
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inner_type=ast_nodes.ValueType('float'), extents=(3,)
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),
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doc='',
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),
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],
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)
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self.assertEqual(str(struct), 'struct {int foo; float bar[3];}')
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self.assertEqual(struct.decl('var'), 'struct {int foo; float bar[3];} var')
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self.assertEqual(struct.fields[0].decltype, 'int')
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self.assertEqual(struct.fields[1].decltype, 'float [3]')
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def test_anonymous_union_decl(self):
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union = ast_nodes.AnonymousUnionDecl(
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fields=[
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ast_nodes.StructFieldDecl(
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name='foo',
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type=ast_nodes.ValueType('int'),
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doc='',
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),
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ast_nodes.StructFieldDecl(
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name='bar',
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type=ast_nodes.ArrayType(
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inner_type=ast_nodes.ValueType('float'), extents=(3,)
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),
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doc='',
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),
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],
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)
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self.assertEqual(str(union), 'union {int foo; float bar[3];}')
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self.assertEqual(union.decl('var'), 'union {int foo; float bar[3];} var')
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def test_function_parameter_decl_nullable(self):
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param_ptr_nullable = ast_nodes.FunctionParameterDecl(
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name='ptr_param',
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type=ast_nodes.PointerType(ast_nodes.ValueType('int')),
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nullable=True
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)
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self.assertTrue(param_ptr_nullable.nullable)
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self.assertEqual(str(param_ptr_nullable), 'int * ptr_param')
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param_ptr_not_nullable = ast_nodes.FunctionParameterDecl(
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name='ptr_param',
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type=ast_nodes.PointerType(ast_nodes.ValueType('int')),
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)
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self.assertFalse(param_ptr_not_nullable.nullable)
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self.assertEqual(str(param_ptr_not_nullable), 'int * ptr_param')
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param_array_nullable = ast_nodes.FunctionParameterDecl(
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name='array_param',
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type=ast_nodes.ArrayType(ast_nodes.ValueType('float'), (10,)),
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nullable=True
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)
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self.assertTrue(param_array_nullable.nullable)
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self.assertEqual(str(param_array_nullable), 'float array_param[10]')
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if __name__ == '__main__':
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absltest.main()
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