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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 "gtest/gtest.h"
#include "src/ast/decorated_variable.h"
#include "src/ast/variable_decoration.h"
#include "src/reader/wgsl/parser_impl.h"
#include "src/reader/wgsl/parser_impl_test_helper.h"
namespace tint {
namespace reader {
namespace wgsl {
namespace {
TEST_F(ParserImplTest, GlobalVariableDecl_WithoutConstructor) {
auto* p = parser("var<out> a : f32");
auto e = p->global_variable_decl();
ASSERT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e, nullptr);
EXPECT_EQ(e->name(), "a");
EXPECT_TRUE(e->type()->IsF32());
EXPECT_EQ(e->storage_class(), ast::StorageClass::kOutput);
ASSERT_EQ(e->constructor(), nullptr);
ASSERT_FALSE(e->IsDecorated());
}
TEST_F(ParserImplTest, GlobalVariableDecl_WithConstructor) {
auto* p = parser("var<out> a : f32 = 1.");
auto e = p->global_variable_decl();
ASSERT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e, nullptr);
EXPECT_EQ(e->name(), "a");
EXPECT_TRUE(e->type()->IsF32());
EXPECT_EQ(e->storage_class(), ast::StorageClass::kOutput);
ASSERT_NE(e->constructor(), nullptr);
ASSERT_TRUE(e->constructor()->IsConstructor());
ASSERT_TRUE(e->constructor()->AsConstructor()->IsScalarConstructor());
ASSERT_FALSE(e->IsDecorated());
}
TEST_F(ParserImplTest, GlobalVariableDecl_WithDecoration) {
auto* p = parser("[[binding(2), set(1)]] var<out> a : f32");
auto e = p->global_variable_decl();
ASSERT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e, nullptr);
ASSERT_TRUE(e->IsDecorated());
EXPECT_EQ(e->name(), "a");
ASSERT_NE(e->type(), nullptr);
EXPECT_TRUE(e->type()->IsF32());
EXPECT_EQ(e->storage_class(), ast::StorageClass::kOutput);
ASSERT_EQ(e->constructor(), nullptr);
ASSERT_TRUE(e->IsDecorated());
auto* v = e->AsDecorated();
auto& decos = v->decorations();
ASSERT_EQ(decos.size(), 2u);
ASSERT_TRUE(decos[0]->IsBinding());
ASSERT_TRUE(decos[1]->IsSet());
}
TEST_F(ParserImplTest, GlobalVariableDecl_InvalidDecoration) {
auto* p = parser("[[binding()]] var<out> a : f32");
auto e = p->global_variable_decl();
ASSERT_TRUE(p->has_error());
ASSERT_EQ(e, nullptr);
EXPECT_EQ(p->error(), "1:11: invalid value for binding decoration");
}
TEST_F(ParserImplTest, GlobalVariableDecl_InvalidConstExpr) {
auto* p = parser("var<out> a : f32 = if (a) {}");
auto e = p->global_variable_decl();
ASSERT_TRUE(p->has_error());
ASSERT_EQ(e, nullptr);
EXPECT_EQ(p->error(), "1:20: unable to parse const literal");
}
TEST_F(ParserImplTest, GlobalVariableDecl_InvalidVariableDecl) {
auto* p = parser("var<invalid> a : f32;");
auto e = p->global_variable_decl();
ASSERT_TRUE(p->has_error());
ASSERT_EQ(e, nullptr);
EXPECT_EQ(p->error(), "1:5: invalid storage class for variable decoration");
}
} // namespace
} // namespace wgsl
} // namespace reader
} // namespace tint