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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/ast/workgroup_attribute.h"
#include "src/reader/wgsl/parser_impl_test_helper.h"
namespace tint {
namespace reader {
namespace wgsl {
namespace {
TEST_F(ParserImplTest, FunctionDecl) {
auto p = parser("fn main(a : i32, b : f32) { return; }");
auto attrs = p->attribute_list();
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_FALSE(attrs.errored);
EXPECT_FALSE(attrs.matched);
auto f = p->function_decl(attrs.value);
EXPECT_FALSE(p->has_error()) << p->error();
EXPECT_FALSE(f.errored);
EXPECT_TRUE(f.matched);
ASSERT_NE(f.value, nullptr);
EXPECT_EQ(f->symbol, p->builder().Symbols().Get("main"));
ASSERT_NE(f->return_type, nullptr);
EXPECT_TRUE(f->return_type->Is<ast::Void>());
ASSERT_EQ(f->params.size(), 2u);
EXPECT_EQ(f->params[0]->symbol, p->builder().Symbols().Get("a"));
EXPECT_EQ(f->params[1]->symbol, p->builder().Symbols().Get("b"));
ASSERT_NE(f->return_type, nullptr);
EXPECT_TRUE(f->return_type->Is<ast::Void>());
auto* body = f->body;
ASSERT_EQ(body->statements.size(), 1u);
EXPECT_TRUE(body->statements[0]->Is<ast::ReturnStatement>());
}
TEST_F(ParserImplTest, FunctionDecl_AttributeList) {
auto p = parser("@workgroup_size(2, 3, 4) fn main() { return; }");
auto attrs = p->attribute_list();
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_FALSE(attrs.errored);
ASSERT_TRUE(attrs.matched);
auto f = p->function_decl(attrs.value);
EXPECT_FALSE(p->has_error()) << p->error();
EXPECT_FALSE(f.errored);
EXPECT_TRUE(f.matched);
ASSERT_NE(f.value, nullptr);
EXPECT_EQ(f->symbol, p->builder().Symbols().Get("main"));
ASSERT_NE(f->return_type, nullptr);
EXPECT_TRUE(f->return_type->Is<ast::Void>());
ASSERT_EQ(f->params.size(), 0u);
auto& attributes = f->attributes;
ASSERT_EQ(attributes.size(), 1u);
ASSERT_TRUE(attributes[0]->Is<ast::WorkgroupAttribute>());
auto values = attributes[0]->As<ast::WorkgroupAttribute>()->Values();
ASSERT_TRUE(values[0]->Is<ast::IntLiteralExpression>());
EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->ValueAsU32(), 2u);
ASSERT_TRUE(values[1]->Is<ast::IntLiteralExpression>());
EXPECT_EQ(values[1]->As<ast::IntLiteralExpression>()->ValueAsU32(), 3u);
ASSERT_TRUE(values[2]->Is<ast::IntLiteralExpression>());
EXPECT_EQ(values[2]->As<ast::IntLiteralExpression>()->ValueAsU32(), 4u);
auto* body = f->body;
ASSERT_EQ(body->statements.size(), 1u);
EXPECT_TRUE(body->statements[0]->Is<ast::ReturnStatement>());
}
TEST_F(ParserImplTest, FunctionDecl_AttributeList_MultipleEntries) {
auto p = parser(R"(
@workgroup_size(2, 3, 4) @stage(compute)
fn main() { return; })");
auto attrs = p->attribute_list();
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_FALSE(attrs.errored);
ASSERT_TRUE(attrs.matched);
auto f = p->function_decl(attrs.value);
EXPECT_FALSE(p->has_error()) << p->error();
EXPECT_FALSE(f.errored);
EXPECT_TRUE(f.matched);
ASSERT_NE(f.value, nullptr);
EXPECT_EQ(f->symbol, p->builder().Symbols().Get("main"));
ASSERT_NE(f->return_type, nullptr);
EXPECT_TRUE(f->return_type->Is<ast::Void>());
ASSERT_EQ(f->params.size(), 0u);
auto& attributes = f->attributes;
ASSERT_EQ(attributes.size(), 2u);
ASSERT_TRUE(attributes[0]->Is<ast::WorkgroupAttribute>());
auto values = attributes[0]->As<ast::WorkgroupAttribute>()->Values();
ASSERT_TRUE(values[0]->Is<ast::IntLiteralExpression>());
EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->ValueAsU32(), 2u);
ASSERT_TRUE(values[1]->Is<ast::IntLiteralExpression>());
EXPECT_EQ(values[1]->As<ast::IntLiteralExpression>()->ValueAsU32(), 3u);
ASSERT_TRUE(values[2]->Is<ast::IntLiteralExpression>());
EXPECT_EQ(values[2]->As<ast::IntLiteralExpression>()->ValueAsU32(), 4u);
ASSERT_TRUE(attributes[1]->Is<ast::StageAttribute>());
EXPECT_EQ(attributes[1]->As<ast::StageAttribute>()->stage,
ast::PipelineStage::kCompute);
auto* body = f->body;
ASSERT_EQ(body->statements.size(), 1u);
EXPECT_TRUE(body->statements[0]->Is<ast::ReturnStatement>());
}
TEST_F(ParserImplTest, FunctionDecl_AttributeList_MultipleLists) {
auto p = parser(R"(
@workgroup_size(2, 3, 4)
@stage(compute)
fn main() { return; })");
auto attributes = p->attribute_list();
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_FALSE(attributes.errored);
ASSERT_TRUE(attributes.matched);
auto f = p->function_decl(attributes.value);
EXPECT_FALSE(p->has_error()) << p->error();
EXPECT_FALSE(f.errored);
EXPECT_TRUE(f.matched);
ASSERT_NE(f.value, nullptr);
EXPECT_EQ(f->symbol, p->builder().Symbols().Get("main"));
ASSERT_NE(f->return_type, nullptr);
EXPECT_TRUE(f->return_type->Is<ast::Void>());
ASSERT_EQ(f->params.size(), 0u);
auto& attrs = f->attributes;
ASSERT_EQ(attrs.size(), 2u);
ASSERT_TRUE(attrs[0]->Is<ast::WorkgroupAttribute>());
auto values = attrs[0]->As<ast::WorkgroupAttribute>()->Values();
ASSERT_TRUE(values[0]->Is<ast::IntLiteralExpression>());
EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->ValueAsU32(), 2u);
ASSERT_TRUE(values[1]->Is<ast::IntLiteralExpression>());
EXPECT_EQ(values[1]->As<ast::IntLiteralExpression>()->ValueAsU32(), 3u);
ASSERT_TRUE(values[2]->Is<ast::IntLiteralExpression>());
EXPECT_EQ(values[2]->As<ast::IntLiteralExpression>()->ValueAsU32(), 4u);
ASSERT_TRUE(attrs[1]->Is<ast::StageAttribute>());
EXPECT_EQ(attrs[1]->As<ast::StageAttribute>()->stage,
ast::PipelineStage::kCompute);
auto* body = f->body;
ASSERT_EQ(body->statements.size(), 1u);
EXPECT_TRUE(body->statements[0]->Is<ast::ReturnStatement>());
}
TEST_F(ParserImplTest, FunctionDecl_ReturnTypeAttributeList) {
auto p = parser("fn main() -> @location(1) f32 { return 1.0; }");
auto attrs = p->attribute_list();
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_FALSE(attrs.errored);
EXPECT_FALSE(attrs.matched);
auto f = p->function_decl(attrs.value);
EXPECT_FALSE(p->has_error()) << p->error();
EXPECT_FALSE(f.errored);
EXPECT_TRUE(f.matched);
ASSERT_NE(f.value, nullptr);
EXPECT_EQ(f->symbol, p->builder().Symbols().Get("main"));
ASSERT_NE(f->return_type, nullptr);
EXPECT_TRUE(f->return_type->Is<ast::F32>());
ASSERT_EQ(f->params.size(), 0u);
auto& attributes = f->attributes;
EXPECT_EQ(attributes.size(), 0u);
auto& ret_type_attributes = f->return_type_attributes;
ASSERT_EQ(ret_type_attributes.size(), 1u);
auto* loc = ret_type_attributes[0]->As<ast::LocationAttribute>();
ASSERT_TRUE(loc != nullptr);
EXPECT_EQ(loc->value, 1u);
auto* body = f->body;
ASSERT_EQ(body->statements.size(), 1u);
EXPECT_TRUE(body->statements[0]->Is<ast::ReturnStatement>());
}
TEST_F(ParserImplTest, FunctionDecl_InvalidHeader) {
auto p = parser("fn main() -> { }");
auto attrs = p->attribute_list();
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_FALSE(attrs.errored);
EXPECT_FALSE(attrs.matched);
auto f = p->function_decl(attrs.value);
EXPECT_TRUE(f.errored);
EXPECT_FALSE(f.matched);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(f.value, nullptr);
EXPECT_EQ(p->error(), "1:14: unable to determine function return type");
}
TEST_F(ParserImplTest, FunctionDecl_InvalidBody) {
auto p = parser("fn main() { return }");
auto attrs = p->attribute_list();
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_FALSE(attrs.errored);
EXPECT_FALSE(attrs.matched);
auto f = p->function_decl(attrs.value);
EXPECT_TRUE(f.errored);
EXPECT_FALSE(f.matched);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(f.value, nullptr);
EXPECT_EQ(p->error(), "1:20: expected ';' for return statement");
}
TEST_F(ParserImplTest, FunctionDecl_MissingLeftBrace) {
auto p = parser("fn main() return; }");
auto attrs = p->attribute_list();
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_FALSE(attrs.errored);
EXPECT_FALSE(attrs.matched);
auto f = p->function_decl(attrs.value);
EXPECT_TRUE(f.errored);
EXPECT_FALSE(f.matched);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(f.value, nullptr);
EXPECT_EQ(p->error(), "1:11: expected '{'");
}
} // namespace
} // namespace wgsl
} // namespace reader
} // namespace tint