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// Copyright 2020 The Dawn & Tint Authors
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#ifndef SRC_TINT_LANG_MSL_WRITER_AST_PRINTER_HELPER_TEST_H_
#define SRC_TINT_LANG_MSL_WRITER_AST_PRINTER_HELPER_TEST_H_
#include <memory>
#include <string>
#include <utility>
#include "gtest/gtest.h"
#include "src/tint/lang/msl/writer/ast_printer/ast_printer.h"
#include "src/tint/lang/wgsl/program/program_builder.h"
#include "src/tint/lang/wgsl/resolver/resolve.h"
namespace tint::msl::writer {
/// Helper class for testing
template <typename BASE>
class TestHelperBase : public BASE, public ProgramBuilder {
public:
TestHelperBase() = default;
~TestHelperBase() override = default;
/// @returns the default generator options for SanitizeAndBuild(), if no explicit options are
/// provided.
static Options DefaultOptions() {
Options opts;
opts.disable_robustness = true;
return opts;
}
/// Builds and returns a ASTPrinter from the program.
/// @note The generator is only built once. Multiple calls to Build() will
/// return the same ASTPrinter without rebuilding.
/// @return the built generator
ASTPrinter& Build(const Options& options = {}) {
if (gen_) {
return *gen_;
}
if (!IsValid()) {
ADD_FAILURE() << "ProgramBuilder is not valid: " << Diagnostics();
}
program = std::make_unique<Program>(resolver::Resolve(*this));
if (!program->IsValid()) {
ADD_FAILURE() << program->Diagnostics();
}
gen_ = std::make_unique<ASTPrinter>(*program, options);
return *gen_;
}
/// Builds the program, runs the program through the transform::Msl sanitizer
/// and returns a ASTPrinter from the sanitized program.
/// @param options The MSL generator options.
/// @note The generator is only built once. Multiple calls to Build() will
/// return the same ASTPrinter without rebuilding.
/// @return the built generator
ASTPrinter& SanitizeAndBuild(const Options& options = DefaultOptions()) {
if (gen_) {
return *gen_;
}
if (!IsValid()) {
ADD_FAILURE() << "ProgramBuilder is not valid: " << Diagnostics();
}
program = std::make_unique<Program>(resolver::Resolve(*this));
if (!program->IsValid()) {
ADD_FAILURE() << program->Diagnostics();
}
auto result = Sanitize(*program, options);
if (!result.program.IsValid()) {
ADD_FAILURE() << result.program.Diagnostics();
}
*program = std::move(result.program);
gen_ = std::make_unique<ASTPrinter>(*program, options);
return *gen_;
}
/// The program built with a call to Build()
std::unique_ptr<Program> program;
private:
std::unique_ptr<ASTPrinter> gen_;
std::unique_ptr<ASTPrinter> gen_with_options_;
};
/// Test helper
using TestHelper = TestHelperBase<testing::Test>;
/// Param test helper
template <typename T>
using TestParamHelper = TestHelperBase<testing::TestWithParam<T>>;
} // namespace tint::msl::writer
#endif // SRC_TINT_LANG_MSL_WRITER_AST_PRINTER_HELPER_TEST_H_