| # Copyright 2019 Google LLC |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """Tests for ...emboss.front_end.write_inference.""" |
| |
| import unittest |
| from compiler.front_end import glue |
| from compiler.front_end import test_util |
| from compiler.front_end import write_inference |
| from compiler.util import ir_pb2 |
| |
| |
| class WriteInferenceTest(unittest.TestCase): |
| |
| def _make_ir(self, emb_text): |
| ir, unused_debug_info, errors = glue.parse_emboss_file( |
| "m.emb", |
| test_util.dict_file_reader({"m.emb": emb_text}), |
| stop_before_step="set_write_methods") |
| assert not errors, errors |
| return ir |
| |
| def test_adds_physical_write_method(self): |
| ir = self._make_ir("struct Foo:\n" |
| " 0 [+1] UInt x\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| self.assertTrue( |
| ir.module[0].type[0].structure.field[0].write_method.physical) |
| |
| def test_adds_read_only_write_method_to_non_alias_virtual(self): |
| ir = self._make_ir("struct Foo:\n" |
| " let x = 5\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| self.assertTrue( |
| ir.module[0].type[0].structure.field[0].write_method.read_only) |
| |
| def test_adds_alias_write_method_to_alias_of_physical_field(self): |
| ir = self._make_ir("struct Foo:\n" |
| " let x = y\n" |
| " 0 [+1] UInt y\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[0] |
| self.assertTrue(field.write_method.HasField("alias")) |
| self.assertEqual( |
| "y", field.write_method.alias.path[0].canonical_name.object_path[-1]) |
| |
| def test_adds_alias_write_method_to_alias_of_alias_of_physical_field(self): |
| ir = self._make_ir("struct Foo:\n" |
| " let x = z\n" |
| " let z = y\n" |
| " 0 [+1] UInt y\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[0] |
| self.assertTrue(field.write_method.HasField("alias")) |
| self.assertEqual( |
| "z", field.write_method.alias.path[0].canonical_name.object_path[-1]) |
| |
| def test_adds_read_only_write_method_to_alias_of_read_only(self): |
| ir = self._make_ir("struct Foo:\n" |
| " let x = y\n" |
| " let y = 5\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[0] |
| self.assertTrue(field.write_method.read_only) |
| |
| def test_adds_read_only_write_method_to_alias_of_alias_of_read_only(self): |
| ir = self._make_ir("struct Foo:\n" |
| " let x = z\n" |
| " let z = y\n" |
| " let y = 5\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[0] |
| self.assertTrue(field.write_method.read_only) |
| |
| def test_adds_read_only_write_method_to_alias_of_parameter(self): |
| ir = self._make_ir("struct Foo(x: UInt:8):\n" |
| " let y = x\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[0] |
| self.assertTrue(field.write_method.read_only) |
| |
| def test_adds_transform_write_method_to_base_value_field(self): |
| ir = self._make_ir("struct Foo:\n" |
| " 0 [+1] UInt x\n" |
| " let y = x + 50\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[1] |
| transform = field.write_method.transform |
| self.assertTrue(transform) |
| self.assertEqual( |
| "x", |
| transform.destination.path[0].canonical_name.object_path[-1]) |
| self.assertEqual(ir_pb2.Function.SUBTRACTION, |
| transform.function_body.function.function) |
| arg0, arg1 = transform.function_body.function.args |
| self.assertEqual("$logical_value", |
| arg0.builtin_reference.canonical_name.object_path[0]) |
| self.assertEqual("50", arg1.constant.value) |
| |
| def test_adds_transform_write_method_to_negative_base_value_field(self): |
| ir = self._make_ir("struct Foo:\n" |
| " 0 [+1] UInt x\n" |
| " let y = x - 50\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[1] |
| transform = field.write_method.transform |
| self.assertTrue(transform) |
| self.assertEqual( |
| "x", |
| transform.destination.path[0].canonical_name.object_path[-1]) |
| self.assertEqual(ir_pb2.Function.ADDITION, |
| transform.function_body.function.function) |
| arg0, arg1 = transform.function_body.function.args |
| self.assertEqual("$logical_value", |
| arg0.builtin_reference.canonical_name.object_path[0]) |
| self.assertEqual("50", arg1.constant.value) |
| |
| def test_adds_transform_write_method_to_reversed_base_value_field(self): |
| ir = self._make_ir("struct Foo:\n" |
| " 0 [+1] UInt x\n" |
| " let y = 50 + x\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[1] |
| transform = field.write_method.transform |
| self.assertTrue(transform) |
| self.assertEqual( |
| "x", |
| transform.destination.path[0].canonical_name.object_path[-1]) |
| self.assertEqual(ir_pb2.Function.SUBTRACTION, |
| transform.function_body.function.function) |
| arg0, arg1 = transform.function_body.function.args |
| self.assertEqual("$logical_value", |
| arg0.builtin_reference.canonical_name.object_path[0]) |
| self.assertEqual("50", arg1.constant.value) |
| |
| def test_adds_transform_write_method_to_reversed_negative_base_value_field( |
| self): |
| ir = self._make_ir("struct Foo:\n" |
| " 0 [+1] UInt x\n" |
| " let y = 50 - x\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[1] |
| transform = field.write_method.transform |
| self.assertTrue(transform) |
| self.assertEqual( |
| "x", |
| transform.destination.path[0].canonical_name.object_path[-1]) |
| self.assertEqual(ir_pb2.Function.SUBTRACTION, |
| transform.function_body.function.function) |
| arg0, arg1 = transform.function_body.function.args |
| self.assertEqual("50", arg0.constant.value) |
| self.assertEqual("$logical_value", |
| arg1.builtin_reference.canonical_name.object_path[0]) |
| |
| def test_adds_transform_write_method_to_nested_invertible_field(self): |
| ir = self._make_ir("struct Foo:\n" |
| " 0 [+1] UInt x\n" |
| " let y = 30 + (50 - x)\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[1] |
| transform = field.write_method.transform |
| self.assertTrue(transform) |
| self.assertEqual( |
| "x", |
| transform.destination.path[0].canonical_name.object_path[-1]) |
| self.assertEqual(ir_pb2.Function.SUBTRACTION, |
| transform.function_body.function.function) |
| arg0, arg1 = transform.function_body.function.args |
| self.assertEqual("50", arg0.constant.value) |
| self.assertEqual(ir_pb2.Function.SUBTRACTION, arg1.function.function) |
| arg10, arg11 = arg1.function.args |
| self.assertEqual("$logical_value", |
| arg10.builtin_reference.canonical_name.object_path[0]) |
| self.assertEqual("30", arg11.constant.value) |
| |
| def test_does_not_add_transform_write_method_for_parameter_target(self): |
| ir = self._make_ir("struct Foo(x: UInt:8):\n" |
| " let y = 50 + x\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[0] |
| self.assertEqual("read_only", field.write_method.WhichOneof("method")) |
| |
| def test_adds_transform_write_method_with_complex_auxiliary_subexpression( |
| self): |
| ir = self._make_ir("struct Foo:\n" |
| " 0 [+1] UInt x\n" |
| " let y = x - $max(Foo.$size_in_bytes, Foo.z)\n" |
| " let z = 500\n") |
| self.assertEqual([], write_inference.set_write_methods(ir)) |
| field = ir.module[0].type[0].structure.field[1] |
| transform = field.write_method.transform |
| self.assertTrue(transform) |
| self.assertEqual( |
| "x", |
| transform.destination.path[0].canonical_name.object_path[-1]) |
| self.assertEqual(ir_pb2.Function.ADDITION, |
| transform.function_body.function.function) |
| args = transform.function_body.function.args |
| self.assertEqual("$logical_value", |
| args[0].builtin_reference.canonical_name.object_path[0]) |
| self.assertEqual(field.read_transform.function.args[1], args[1]) |
| |
| |
| if __name__ == "__main__": |
| unittest.main() |
