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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-s-parser.h"
using namespace cashew;
using namespace wasm;
int main(int argc, const char *argv[]) {
bool debugInfo = false;
std::string symbolMap;
Options options("wasm-as", "Assemble a .wast (WebAssembly text format) into a .wasm (WebAssembly binary format)");
options.extra["validate"] = "wasm";
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("--validate", "-v", "Control validation of the output module",
Options::Arguments::One,
[](Options *o, const std::string &argument) {
if (argument != "web" && argument != "none" && argument != "wasm") {
std::cerr << "Valid arguments for --validate flag are 'wasm', 'web', and 'none'.\n";
exit(1);
}
o->extra["validate"] = argument;
})
.add("--debuginfo", "-g", "Emit names section and debug info",
Options::Arguments::Zero,
[&](Options *o, const std::string &arguments) { debugInfo = true; })
.add("--symbolmap", "-s", "Emit a symbol map (indexes => names)",
Options::Arguments::One,
[&](Options *o, const std::string &argument) { symbolMap = 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::string>(options.extra["infile"], Flags::Text, options.debug ? Flags::Debug : Flags::Release));
Module wasm;
try {
if (options.debug) std::cerr << "s-parsing..." << std::endl;
SExpressionParser parser(const_cast<char*>(input.c_str()));
Element& root = *parser.root;
if (options.debug) std::cerr << "w-parsing..." << std::endl;
SExpressionWasmBuilder builder(wasm, *root[0]);
} catch (ParseException& p) {
p.dump(std::cerr);
Fatal() << "error in parsing input";
}
if (options.extra["validate"] != "none") {
if (options.debug) std::cerr << "Validating..." << std::endl;
if (!wasm::WasmValidator().validate(wasm,
options.extra["validate"] == "web")) {
Fatal() << "Error: input module is not valid.\n";
}
}
if (options.debug) std::cerr << "binarification..." << std::endl;
BufferWithRandomAccess buffer(options.debug);
WasmBinaryWriter writer(&wasm, buffer, options.debug);
writer.setDebugInfo(debugInfo);
if (symbolMap.size() > 0) writer.setSymbolMap(symbolMap);
writer.write();
if (options.debug) std::cerr << "writing to output..." << std::endl;
Output output(options.extra["output"], Flags::Binary, options.debug ? Flags::Debug : Flags::Release);
buffer.writeTo(output);
if (options.debug) std::cerr << "Done." << std::endl;
}
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