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// Copyright 2021 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/lang/core/fluent_types.h"
#include "src/tint/lang/glsl/writer/ast_printer/helper_test.h"
#include "src/tint/utils/text/string_stream.h"
#include "gmock/gmock.h"
using namespace tint::core::fluent_types; // NOLINT
namespace tint::glsl::writer {
namespace {
using GlslUnaryOpTest = TestHelper;
TEST_F(GlslUnaryOpTest, AddressOf) {
GlobalVar("expr", ty.f32(), core::AddressSpace::kPrivate);
auto* op = create<ast::UnaryOpExpression>(core::UnaryOp::kAddressOf, Expr("expr"));
WrapInFunction(op);
ASTPrinter& gen = Build();
StringStream out;
gen.EmitExpression(out, op);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(out.str(), "expr");
}
TEST_F(GlslUnaryOpTest, Complement) {
GlobalVar("expr", ty.u32(), core::AddressSpace::kPrivate);
auto* op = create<ast::UnaryOpExpression>(core::UnaryOp::kComplement, Expr("expr"));
WrapInFunction(op);
ASTPrinter& gen = Build();
StringStream out;
gen.EmitExpression(out, op);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(out.str(), "~(expr)");
}
TEST_F(GlslUnaryOpTest, Indirection) {
GlobalVar("G", ty.f32(), core::AddressSpace::kPrivate);
auto* p = Let("expr", create<ast::UnaryOpExpression>(core::UnaryOp::kAddressOf, Expr("G")));
auto* op = create<ast::UnaryOpExpression>(core::UnaryOp::kIndirection, Expr("expr"));
WrapInFunction(p, op);
ASTPrinter& gen = Build();
StringStream out;
gen.EmitExpression(out, op);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(out.str(), "expr");
}
TEST_F(GlslUnaryOpTest, Not) {
GlobalVar("expr", ty.bool_(), core::AddressSpace::kPrivate);
auto* op = create<ast::UnaryOpExpression>(core::UnaryOp::kNot, Expr("expr"));
WrapInFunction(op);
ASTPrinter& gen = Build();
StringStream out;
gen.EmitExpression(out, op);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(out.str(), "!(expr)");
}
TEST_F(GlslUnaryOpTest, Negation) {
GlobalVar("expr", ty.i32(), core::AddressSpace::kPrivate);
auto* op = create<ast::UnaryOpExpression>(core::UnaryOp::kNegation, Expr("expr"));
WrapInFunction(op);
ASTPrinter& gen = Build();
StringStream out;
gen.EmitExpression(out, op);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(out.str(), "-(expr)");
}
TEST_F(GlslUnaryOpTest, IntMin) {
auto* op = Expr(i32(std::numeric_limits<int32_t>::min()));
WrapInFunction(op);
ASTPrinter& gen = Build();
StringStream out;
gen.EmitExpression(out, op);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(out.str(), "(-2147483647 - 1)");
}
} // namespace
} // namespace tint::glsl::writer