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/*
* Copyright 2019 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.
*/
//
// Prints the a map of function indexes to function names. This can be
// useful for interpreting a stack trace from a production environment
// where names did not exist on the client. The map looks like this:
//
// 0:foo
// 1:bar
// 2:baz
//
#include "ir/module-utils.h"
#include "pass.h"
#include "support/file.h"
#include "wasm.h"
namespace wasm {
struct PrintFunctionMap : public Pass {
bool modifiesBinaryenIR() override { return false; }
void run(Module* module) override {
// If an argument is provided, write to that file; otherwise write to
// stdout.
auto outFile = getArgumentOrDefault("symbolmap", "");
Output output(outFile, Flags::Text);
auto& o = output.getStream();
Index i = 0;
auto write = [&](Function* func) {
o << i++ << ':' << func->name.str << '\n';
};
ModuleUtils::iterImportedFunctions(*module, write);
ModuleUtils::iterDefinedFunctions(*module, write);
}
};
Pass* createPrintFunctionMapPass() { return new PrintFunctionMap(); }
} // namespace wasm
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