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// Copyright 2022 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.
#ifndef SRC_TINT_LANG_WGSL_HELPERS_IR_PROGRAM_TEST_H_
#define SRC_TINT_LANG_WGSL_HELPERS_IR_PROGRAM_TEST_H_
#include <memory>
#include <string>
#include <utility>
#include "gtest/gtest.h"
#include "src/tint/lang/core/ir/disassembler.h"
#include "src/tint/lang/core/ir/validator.h"
#include "src/tint/lang/core/number.h"
#include "src/tint/lang/wgsl/program/program_builder.h"
#include "src/tint/lang/wgsl/reader/program_to_ir/program_to_ir.h"
#include "src/tint/lang/wgsl/reader/reader.h"
#include "src/tint/lang/wgsl/resolver/resolve.h"
#include "src/tint/utils/text/string_stream.h"
namespace tint::wgsl::helpers {
/// Helper class for testing IR with an input WGSL program.
template <typename BASE>
class IRProgramTestBase : public BASE, public ProgramBuilder {
public:
IRProgramTestBase() = default;
~IRProgramTestBase() override = default;
/// Build the module, cleaning up the program before returning.
/// @returns the generated module
tint::Result<core::ir::Module, std::string> Build() {
Program program{resolver::Resolve(*this)};
if (!program.IsValid()) {
return program.Diagnostics().str();
}
auto result = wgsl::reader::ProgramToIR(&program);
if (result) {
auto validated = core::ir::Validate(result.Get());
if (!validated) {
return validated.Failure().str();
}
}
return result;
}
/// Build the module from the given WGSL.
/// @param wgsl the WGSL to convert to IR
/// @returns the generated module
tint::Result<core::ir::Module, std::string> Build(std::string wgsl) {
#if TINT_BUILD_WGSL_READER
Source::File file("test.wgsl", std::move(wgsl));
auto program = wgsl::reader::Parse(&file);
if (!program.IsValid()) {
return program.Diagnostics().str();
}
auto result = wgsl::reader::ProgramToIR(&program);
if (result) {
auto validated = core::ir::Validate(result.Get());
if (!validated) {
return validated.Failure().str();
}
}
return result;
#else
(void)wgsl;
return std::string("error: Tint not built with the WGSL reader");
#endif
}
/// @param mod the module
/// @returns the disassembly string of the module
std::string Disassemble(core::ir::Module& mod) {
core::ir::Disassembler d(mod);
return d.Disassemble();
}
};
using IRProgramTest = IRProgramTestBase<testing::Test>;
template <typename T>
using IRProgramTestParam = IRProgramTestBase<testing::TestWithParam<T>>;
} // namespace tint::wgsl::helpers
#endif // SRC_TINT_LANG_WGSL_HELPERS_IR_PROGRAM_TEST_H_