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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 <vector>
#include "gtest/gtest.h"
#include "src/ast/identifier_expression.h"
#include "src/ast/type/f32_type.h"
#include "src/ast/variable.h"
#include "src/ast/variable_decl_statement.h"
#include "src/writer/wgsl/generator_impl.h"
#include "src/writer/wgsl/test_helper.h"
namespace tint {
namespace writer {
namespace wgsl {
namespace {
using WgslGeneratorImplTest = TestHelper;
TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement) {
ast::type::F32Type f32;
auto* var = create<ast::Variable>("a", ast::StorageClass::kNone, &f32);
ast::VariableDeclStatement stmt(var);
gen.increment_indent();
ASSERT_TRUE(gen.EmitStatement(&stmt)) << gen.error();
EXPECT_EQ(gen.result(), " var a : f32;\n");
}
TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement_Function) {
// Variable declarations with Function storage class don't mention their
// storage class. Rely on defaulting.
// https://github.com/gpuweb/gpuweb/issues/654
ast::type::F32Type f32;
auto* var = create<ast::Variable>("a", ast::StorageClass::kFunction, &f32);
ast::VariableDeclStatement stmt(var);
gen.increment_indent();
ASSERT_TRUE(gen.EmitStatement(&stmt)) << gen.error();
EXPECT_EQ(gen.result(), " var a : f32;\n");
}
TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement_Private) {
ast::type::F32Type f32;
auto* var = create<ast::Variable>("a", ast::StorageClass::kPrivate, &f32);
ast::VariableDeclStatement stmt(var);
gen.increment_indent();
ASSERT_TRUE(gen.EmitStatement(&stmt)) << gen.error();
EXPECT_EQ(gen.result(), " var<private> a : f32;\n");
}
} // namespace
} // namespace wgsl
} // namespace writer
} // namespace tint