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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 <memory>
#include "gtest/gtest.h"
#include "src/ast/break_statement.h"
#include "src/ast/case_statement.h"
#include "src/ast/fallthrough_statement.h"
#include "src/ast/identifier_expression.h"
#include "src/ast/module.h"
#include "src/ast/sint_literal.h"
#include "src/ast/type/i32_type.h"
#include "src/writer/hlsl/generator_impl.h"
namespace tint {
namespace writer {
namespace hlsl {
namespace {
using HlslGeneratorImplTest = testing::Test;
TEST_F(HlslGeneratorImplTest, Emit_Case) {
ast::type::I32Type i32;
auto body = std::make_unique<ast::BlockStatement>();
body->append(std::make_unique<ast::BreakStatement>());
ast::CaseSelectorList lit;
lit.push_back(std::make_unique<ast::SintLiteral>(&i32, 5));
ast::CaseStatement c(std::move(lit), std::move(body));
ast::Module m;
GeneratorImpl g(&m);
g.increment_indent();
ASSERT_TRUE(g.EmitCase(&c)) << g.error();
EXPECT_EQ(g.result(), R"( case 5: {
break;
}
)");
}
TEST_F(HlslGeneratorImplTest, Emit_Case_BreaksByDefault) {
ast::type::I32Type i32;
ast::CaseSelectorList lit;
lit.push_back(std::make_unique<ast::SintLiteral>(&i32, 5));
ast::CaseStatement c(std::move(lit), std::make_unique<ast::BlockStatement>());
ast::Module m;
GeneratorImpl g(&m);
g.increment_indent();
ASSERT_TRUE(g.EmitCase(&c)) << g.error();
EXPECT_EQ(g.result(), R"( case 5: {
break;
}
)");
}
TEST_F(HlslGeneratorImplTest, Emit_Case_WithFallthrough) {
ast::type::I32Type i32;
auto body = std::make_unique<ast::BlockStatement>();
body->append(std::make_unique<ast::FallthroughStatement>());
ast::CaseSelectorList lit;
lit.push_back(std::make_unique<ast::SintLiteral>(&i32, 5));
ast::CaseStatement c(std::move(lit), std::move(body));
ast::Module m;
GeneratorImpl g(&m);
g.increment_indent();
ASSERT_TRUE(g.EmitCase(&c)) << g.error();
EXPECT_EQ(g.result(), R"( case 5: {
/* fallthrough */
}
)");
}
TEST_F(HlslGeneratorImplTest, Emit_Case_MultipleSelectors) {
ast::type::I32Type i32;
auto body = std::make_unique<ast::BlockStatement>();
body->append(std::make_unique<ast::BreakStatement>());
ast::CaseSelectorList lit;
lit.push_back(std::make_unique<ast::SintLiteral>(&i32, 5));
lit.push_back(std::make_unique<ast::SintLiteral>(&i32, 6));
ast::CaseStatement c(std::move(lit), std::move(body));
ast::Module m;
GeneratorImpl g(&m);
g.increment_indent();
ASSERT_TRUE(g.EmitCase(&c)) << g.error();
EXPECT_EQ(g.result(), R"( case 5:
case 6: {
break;
}
)");
}
TEST_F(HlslGeneratorImplTest, Emit_Case_Default) {
ast::CaseStatement c;
auto body = std::make_unique<ast::BlockStatement>();
body->append(std::make_unique<ast::BreakStatement>());
c.set_body(std::move(body));
ast::Module m;
GeneratorImpl g(&m);
g.increment_indent();
ASSERT_TRUE(g.EmitCase(&c)) << g.error();
EXPECT_EQ(g.result(), R"( default: {
break;
}
)");
}
} // namespace
} // namespace hlsl
} // namespace writer
} // namespace tint