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// Copyright 2020 The Tint Authors.
//
// 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
//
// http://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.
#include "src/tint/writer/msl/test_helper.h"
namespace tint::writer::msl {
namespace {
struct BinaryData {
const char* result;
ast::BinaryOp op;
};
inline std::ostream& operator<<(std::ostream& out, BinaryData data) {
out << data.op;
return out;
}
using MslBinaryTest = TestParamHelper<BinaryData>;
TEST_P(MslBinaryTest, Emit) {
auto params = GetParam();
auto type = [&] {
return ((params.op == ast::BinaryOp::kLogicalAnd) ||
(params.op == ast::BinaryOp::kLogicalOr))
? static_cast<const ast::Type*>(ty.bool_())
: static_cast<const ast::Type*>(ty.u32());
};
auto* left = Var("left", type());
auto* right = Var("right", type());
auto* expr = create<ast::BinaryExpression>(params.op, Expr(left), Expr(right));
WrapInFunction(left, right, expr);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, expr)) << gen.error();
EXPECT_EQ(out.str(), params.result);
}
INSTANTIATE_TEST_SUITE_P(
MslGeneratorImplTest,
MslBinaryTest,
testing::Values(BinaryData{"(left & right)", ast::BinaryOp::kAnd},
BinaryData{"(left | right)", ast::BinaryOp::kOr},
BinaryData{"(left ^ right)", ast::BinaryOp::kXor},
BinaryData{"(left && right)", ast::BinaryOp::kLogicalAnd},
BinaryData{"(left || right)", ast::BinaryOp::kLogicalOr},
BinaryData{"(left == right)", ast::BinaryOp::kEqual},
BinaryData{"(left != right)", ast::BinaryOp::kNotEqual},
BinaryData{"(left < right)", ast::BinaryOp::kLessThan},
BinaryData{"(left > right)", ast::BinaryOp::kGreaterThan},
BinaryData{"(left <= right)", ast::BinaryOp::kLessThanEqual},
BinaryData{"(left >= right)", ast::BinaryOp::kGreaterThanEqual},
BinaryData{"(left << right)", ast::BinaryOp::kShiftLeft},
BinaryData{"(left >> right)", ast::BinaryOp::kShiftRight},
BinaryData{"(left + right)", ast::BinaryOp::kAdd},
BinaryData{"(left - right)", ast::BinaryOp::kSubtract},
BinaryData{"(left * right)", ast::BinaryOp::kMultiply},
BinaryData{"(left / right)", ast::BinaryOp::kDivide},
BinaryData{"(left % right)", ast::BinaryOp::kModulo}));
using MslBinaryTest_SignedOverflowDefinedBehaviour = TestParamHelper<BinaryData>;
TEST_P(MslBinaryTest_SignedOverflowDefinedBehaviour, Emit) {
auto params = GetParam();
auto* a_type = ty.i32();
auto* b_type =
(params.op == ast::BinaryOp::kShiftLeft || params.op == ast::BinaryOp::kShiftRight)
? static_cast<const ast::Type*>(ty.u32())
: ty.i32();
auto* a = Var("a", a_type);
auto* b = Var("b", b_type);
auto* expr = create<ast::BinaryExpression>(params.op, Expr(a), Expr(b));
WrapInFunction(a, b, expr);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, expr)) << gen.error();
EXPECT_EQ(out.str(), params.result);
}
using Op = ast::BinaryOp;
constexpr BinaryData signed_overflow_defined_behaviour_cases[] = {
{"as_type<int>((as_type<uint>(a) << b))", Op::kShiftLeft},
{"(a >> b)", Op::kShiftRight},
{"as_type<int>((as_type<uint>(a) + as_type<uint>(b)))", Op::kAdd},
{"as_type<int>((as_type<uint>(a) - as_type<uint>(b)))", Op::kSubtract},
{"as_type<int>((as_type<uint>(a) * as_type<uint>(b)))", Op::kMultiply}};
INSTANTIATE_TEST_SUITE_P(MslGeneratorImplTest,
MslBinaryTest_SignedOverflowDefinedBehaviour,
testing::ValuesIn(signed_overflow_defined_behaviour_cases));
using MslBinaryTest_SignedOverflowDefinedBehaviour_Chained = TestParamHelper<BinaryData>;
TEST_P(MslBinaryTest_SignedOverflowDefinedBehaviour_Chained, Emit) {
auto params = GetParam();
auto* a_type = ty.i32();
auto* b_type =
(params.op == ast::BinaryOp::kShiftLeft || params.op == ast::BinaryOp::kShiftRight)
? static_cast<const ast::Type*>(ty.u32())
: ty.i32();
auto* a = Var("a", a_type);
auto* b = Var("b", b_type);
auto* expr1 = create<ast::BinaryExpression>(params.op, Expr(a), Expr(b));
auto* expr2 = create<ast::BinaryExpression>(params.op, expr1, Expr(b));
WrapInFunction(a, b, expr2);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, expr2)) << gen.error();
EXPECT_EQ(out.str(), params.result);
}
using Op = ast::BinaryOp;
constexpr BinaryData signed_overflow_defined_behaviour_chained_cases[] = {
{R"(as_type<int>((as_type<uint>(as_type<int>((as_type<uint>(a) << b))) << b)))",
Op::kShiftLeft},
{R"(((a >> b) >> b))", Op::kShiftRight},
{R"(as_type<int>((as_type<uint>(as_type<int>((as_type<uint>(a) + as_type<uint>(b)))) + as_type<uint>(b))))",
Op::kAdd},
{R"(as_type<int>((as_type<uint>(as_type<int>((as_type<uint>(a) - as_type<uint>(b)))) - as_type<uint>(b))))",
Op::kSubtract},
{R"(as_type<int>((as_type<uint>(as_type<int>((as_type<uint>(a) * as_type<uint>(b)))) * as_type<uint>(b))))",
Op::kMultiply}};
INSTANTIATE_TEST_SUITE_P(MslGeneratorImplTest,
MslBinaryTest_SignedOverflowDefinedBehaviour_Chained,
testing::ValuesIn(signed_overflow_defined_behaviour_chained_cases));
TEST_F(MslBinaryTest, ModF32) {
auto* left = Var("left", ty.f32());
auto* right = Var("right", ty.f32());
auto* expr = create<ast::BinaryExpression>(ast::BinaryOp::kModulo, Expr(left), Expr(right));
WrapInFunction(left, right, expr);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, expr)) << gen.error();
EXPECT_EQ(out.str(), "fmod(left, right)");
}
TEST_F(MslBinaryTest, ModF16) {
Enable(ast::Extension::kF16);
auto* left = Var("left", ty.f16());
auto* right = Var("right", ty.f16());
auto* expr = create<ast::BinaryExpression>(ast::BinaryOp::kModulo, Expr(left), Expr(right));
WrapInFunction(left, right, expr);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, expr)) << gen.error();
EXPECT_EQ(out.str(), "fmod(left, right)");
}
TEST_F(MslBinaryTest, ModVec3F32) {
auto* left = Var("left", ty.vec3<f32>());
auto* right = Var("right", ty.vec3<f32>());
auto* expr = create<ast::BinaryExpression>(ast::BinaryOp::kModulo, Expr(left), Expr(right));
WrapInFunction(left, right, expr);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, expr)) << gen.error();
EXPECT_EQ(out.str(), "fmod(left, right)");
}
TEST_F(MslBinaryTest, ModVec3F16) {
Enable(ast::Extension::kF16);
auto* left = Var("left", ty.vec3<f16>());
auto* right = Var("right", ty.vec3<f16>());
auto* expr = create<ast::BinaryExpression>(ast::BinaryOp::kModulo, Expr(left), Expr(right));
WrapInFunction(left, right, expr);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, expr)) << gen.error();
EXPECT_EQ(out.str(), "fmod(left, right)");
}
TEST_F(MslBinaryTest, BoolAnd) {
auto* left = Var("left", Expr(true));
auto* right = Var("right", Expr(false));
auto* expr = create<ast::BinaryExpression>(ast::BinaryOp::kAnd, Expr(left), Expr(right));
WrapInFunction(left, right, expr);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, expr)) << gen.error();
EXPECT_EQ(out.str(), "bool(left & right)");
}
TEST_F(MslBinaryTest, BoolOr) {
auto* left = Var("left", Expr(true));
auto* right = Var("right", Expr(false));
auto* expr = create<ast::BinaryExpression>(ast::BinaryOp::kOr, Expr(left), Expr(right));
WrapInFunction(left, right, expr);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, expr)) << gen.error();
EXPECT_EQ(out.str(), "bool(left | right)");
}
} // namespace
} // namespace tint::writer::msl