/*

* Copyright 2021 WebAssembly Community Group participants

*

* 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 "ir/module-utils.h"

#include "pass.h"

#include "wasm.h"

//

// Ensures each type has a name. This can be useful for debugging.

//

namespace wasm {

// An arbitrary limit, above which we rename types.

static const size_t NameLenLimit = 20;

struct NameTypes : public Pass {

bool requiresNonNullableLocalFixups() override { return false; }

void run(Module* module) override {

// Find all the types.

std::vector<HeapType> types = ModuleUtils::collectHeapTypes(*module);

// Ensure simple names. If a name already exists, and is short enough, keep

// it.

size_t i = 0;

for (auto& type : types) {

if (module->typeNames.count(type) == 0 ||

module->typeNames[type].name.size() >= NameLenLimit) {

module->typeNames[type].name = "type$" + std::to_string(i++);

}

}

}

};

Pass* createNameTypesPass() { return new NameTypes(); }

} // namespace wasm