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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.
#include "src/tint/fuzzers/shuffle_transform.h"
#include <random>
#include <utility>
#include "src/tint/lang/wgsl/program/clone_context.h"
#include "src/tint/lang/wgsl/program/program_builder.h"
#include "src/tint/lang/wgsl/resolver/resolve.h"
namespace tint::fuzzers {
ShuffleTransform::ShuffleTransform(size_t seed) : seed_(seed) {}
ast::transform::Transform::ApplyResult ShuffleTransform::Apply(const Program* src,
const ast::transform::DataMap&,
ast::transform::DataMap&) const {
ProgramBuilder b;
program::CloneContext ctx{&b, src, /* auto_clone_symbols */ true};
auto decls = src->AST().GlobalDeclarations();
auto rng = std::mt19937_64{seed_};
std::shuffle(std::begin(decls), std::end(decls), rng);
for (auto* decl : decls) {
b.AST().AddGlobalDeclaration(ctx.Clone(decl));
}
ctx.Clone();
return resolver::Resolve(b);
}
} // namespace tint::fuzzers