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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 "source-map.h"
#include "support/colors.h"
#include "support/file.h"
#include "wasm-io.h"
#include "tool-options.h"
using namespace wasm;
int main(int argc, const char* argv[]) {
std::string sourceMapFilename;
const std::string WasmDisOption = "wasm-dis options";
ToolOptions options("wasm-dis",
"Un-assemble a .wasm (WebAssembly binary format) into a "
".wat (WebAssembly text format)");
options
.add("--output",
"-o",
"Output file (stdout if not specified)",
WasmDisOption,
Options::Arguments::One,
[](Options* o, const std::string& argument) {
o->extra["output"] = argument;
Colors::setEnabled(false);
})
.add(
"--source-map",
"-sm",
"Consume source map from the specified file to add location information",
WasmDisOption,
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);
if (options.debug) {
std::cerr << "parsing binary..." << std::endl;
}
Module wasm;
options.applyOptionsBeforeParse(wasm);
try {
ModuleReader().readBinary(options.extra["infile"], wasm, sourceMapFilename);
} catch (ParseException& p) {
p.dump(std::cerr);
std::cerr << '\n';
if (options.debug) {
Fatal() << "error parsing wasm. here is what we read up to the error:\n"
<< wasm;
} else {
Fatal() << "error parsing wasm (try --debug for more info)";
}
} catch (MapParseException& p) {
p.dump(std::cerr);
std::cerr << '\n';
Fatal() << "error in parsing wasm source mapping";
}
options.applyOptionsAfterParse(wasm);
// TODO: Validation. However, validating would mean that users are forced to
// run with wasm-dis -all or such, to enable the features (unless the
// features section is present, but that's rare in general). It would be
// better to have an "autodetect" code path that enables used features
// eventually.
if (options.debug) {
std::cerr << "Printing..." << std::endl;
}
Output output(options.extra["output"], Flags::Text);
output.getStream() << wasm << '\n';
if (options.debug) {
std::cerr << "Done." << std::endl;
}
}
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