blob: 15a1ef56867a8eaa46db2fb24e6afd1e51cc7baf [file] [log] [blame]
// Copyright 2021 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef SRC_TINT_LANG_WGSL_AST_TRANSFORM_HELPER_TEST_H_
#define SRC_TINT_LANG_WGSL_AST_TRANSFORM_HELPER_TEST_H_
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "gtest/gtest.h"
#include "src/tint/lang/wgsl/ast/transform/manager.h"
#include "src/tint/lang/wgsl/ast/transform/transform.h"
#include "src/tint/lang/wgsl/reader/reader.h"
#include "src/tint/lang/wgsl/writer/writer.h"
namespace tint::ast::transform {
/// @param program the program to get an output WGSL string from
/// @returns the output program as a WGSL string, or an error string if the
/// program is not valid.
inline std::string str(const Program& program) {
if (!program.IsValid()) {
return program.Diagnostics().Str();
}
wgsl::writer::Options options;
auto result = wgsl::writer::Generate(program, options);
if (result != Success) {
return result.Failure().reason.Str();
}
auto res = result->wgsl;
if (res.empty()) {
return res;
}
// The WGSL sometimes has two trailing newlines. Strip them
while (res.back() == '\n') {
res.pop_back();
}
if (res.empty()) {
return res;
}
return "\n" + res + "\n";
}
/// Helper class for testing transforms
template <typename BASE>
class TransformTestBase : public BASE {
public:
/// Transforms and returns the WGSL source `in`, transformed using
/// `transform`.
/// @param transform the transform to apply
/// @param in the input WGSL source
/// @param data the optional DataMap to pass to Transform::Run()
/// @return the transformed output
Output Run(std::string in,
std::unique_ptr<transform::Transform> transform,
const DataMap& data = {}) {
std::vector<std::unique_ptr<transform::Transform>> transforms;
transforms.emplace_back(std::move(transform));
return Run(std::move(in), std::move(transforms), data);
}
/// Transforms and returns the WGSL source `in`, transformed using
/// a transform of type `TRANSFORM`.
/// @param in the input WGSL source
/// @param data the optional DataMap to pass to Transform::Run()
/// @return the transformed output
template <typename... TRANSFORMS>
Output Run(std::string in, const DataMap& data = {}) {
wgsl::reader::Options options;
options.allowed_features = wgsl::AllowedFeatures::Everything();
auto file = std::make_unique<Source::File>("test", in);
auto program = wgsl::reader::Parse(file.get(), options);
// Keep this pointer alive after Transform() returns
files_.emplace_back(std::move(file));
return Run<TRANSFORMS...>(std::move(program), data);
}
/// Transforms and returns program `program`, transformed using a transform of
/// type `TRANSFORM`.
/// @param program the input Program
/// @param data the optional DataMap to pass to Transform::Run()
/// @return the transformed output
template <typename... TRANSFORMS>
Output Run(Program&& program, const DataMap& data = {}) {
if (!program.IsValid()) {
return Output(std::move(program));
}
Manager manager;
DataMap outputs;
for (auto* transform_ptr : std::initializer_list<Transform*>{new TRANSFORMS()...}) {
manager.append(std::unique_ptr<Transform>(transform_ptr));
}
auto result = manager.Run(program, data, outputs);
return {std::move(result), std::move(outputs)};
}
/// @param program the input program
/// @param data the optional DataMap to pass to Transform::Run()
/// @return true if the transform should be run for the given input.
template <typename TRANSFORM>
bool ShouldRun(Program&& program, const DataMap& data = {}) {
if (!program.IsValid()) {
ADD_FAILURE() << "ShouldRun() called with invalid program: " << program.Diagnostics();
return false;
}
const Transform& t = TRANSFORM();
DataMap outputs;
auto result = t.Apply(program, data, outputs);
if (!result) {
return false;
}
if (!result->IsValid()) {
ADD_FAILURE() << "Apply() called by ShouldRun() returned errors: "
<< result->Diagnostics();
return true;
}
return result.has_value();
}
/// @param in the input WGSL source
/// @param data the optional DataMap to pass to Transform::Run()
/// @return true if the transform should be run for the given input.
template <typename TRANSFORM>
bool ShouldRun(std::string in, const DataMap& data = {}) {
wgsl::reader::Options options;
options.allowed_features = wgsl::AllowedFeatures::Everything();
auto file = std::make_unique<Source::File>("test", in);
auto program = wgsl::reader::Parse(file.get(), options);
return ShouldRun<TRANSFORM>(std::move(program), data);
}
/// @param output the output of the transform
/// @returns the output program as a WGSL string, or an error string if the
/// program is not valid.
std::string str(const Output& output) { return transform::str(output.program); }
private:
std::vector<std::unique_ptr<Source::File>> files_;
};
using TransformTest = TransformTestBase<testing::Test>;
template <typename T>
using TransformTestWithParam = TransformTestBase<testing::TestWithParam<T>>;
} // namespace tint::ast::transform
#endif // SRC_TINT_LANG_WGSL_AST_TRANSFORM_HELPER_TEST_H_