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/*
* Copyright 2016 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.
*/
//
// wasm2asm console tool
//
#include "support/colors.h"
#include "support/command-line.h"
#include "support/file.h"
#include "wasm-binary.h"
#include "wasm-printing.h"
using namespace cashew;
using namespace wasm;
int main(int argc, const char *argv[]) {
std::string sourceMapFilename;
Options options("wasm-dis", "Un-assemble a .wasm (WebAssembly binary format) into a .wast (WebAssembly text format)");
options.add("--output", "-o", "Output file (stdout if not specified)",
Options::Arguments::One,
[](Options *o, const std::string &argument) {
o->extra["output"] = argument;
Colors::disable();
})
.add("--source-map", "-sm", "Consume source map from the specified file to add location information",
Options::Arguments::One,
[&sourceMapFilename](Options *o, const std::string &argument) { sourceMapFilename = argument; })
.add_positional("INFILE", Options::Arguments::One,
[](Options *o, const std::string &argument) {
o->extra["infile"] = argument;
});
options.parse(argc, argv);
auto input(read_file<std::vector<char>>(options.extra["infile"], Flags::Binary, options.debug ? Flags::Debug : Flags::Release));
if (options.debug) std::cerr << "parsing binary..." << std::endl;
Module wasm;
try {
std::unique_ptr<std::ifstream> sourceMapStream;
WasmBinaryBuilder parser(wasm, input, options.debug);
if (sourceMapFilename.size()) {
sourceMapStream = make_unique<std::ifstream>();
sourceMapStream->open(sourceMapFilename);
parser.setDebugLocations(sourceMapStream.get());
}
parser.read();
if (sourceMapStream) {
sourceMapStream->close();
}
} catch (ParseException& p) {
p.dump(std::cerr);
Fatal() << "error in parsing wasm binary";
} catch (MapParseException& p) {
p.dump(std::cerr);
Fatal() << "error in parsing wasm source mapping";
}
if (options.debug) std::cerr << "Printing..." << std::endl;
Output output(options.extra["output"], Flags::Text, options.debug ? Flags::Debug : Flags::Release);
WasmPrinter::printModule(&wasm, output.getStream());
output << '\n';
if (options.debug) std::cerr << "Done." << std::endl;
}
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