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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file main.cpp
* @author Gav Wood <i@gavwood.com>
* @date 2014
* Ethereum client.
*/
#include <fstream>
#include <iostream>
#include <clocale>
#include <liblll/Compiler.h>
#include <libdevcore/CommonIO.h>
#include <libdevcore/CommonData.h>
#include <libevmasm/Instruction.h>
using namespace std;
using namespace dev;
using namespace dev::solidity;
using namespace dev::eth;
void help()
{
cout
<< "Usage lllc [OPTIONS] <file>" << endl
<< "Options:" << endl
<< " -b,--binary Parse, compile and assemble; output byte code in binary." << endl
<< " -x,--hex Parse, compile and assemble; output byte code in hex." << endl
<< " -a,--assembly Only parse and compile; show assembly." << endl
<< " -t,--parse-tree Only parse; show parse tree." << endl
<< " -h,--help Show this help message and exit." << endl
<< " -V,--version Show the version and exit." << endl;
exit(0);
}
void version()
{
cout << "LLLC, the Lovely Little Language Compiler " << endl;
cout << " By Gav Wood, (c) 2014." << endl;
exit(0);
}
/*
The equivalent of setlocale(LC_ALL, "C") is called before any user code is run.
If the user has an invalid environment setting then it is possible for the call
to set locale to fail, so there are only two possible actions, the first is to
throw a runtime exception and cause the program to quit (default behaviour),
or the second is to modify the environment to something sensible (least
surprising behaviour).
The follow code produces the least surprising behaviour. It will use the user
specified default locale if it is valid, and if not then it will modify the
environment the process is running in to use a sensible default. This also means
that users do not need to install language packs for their OS.
*/
void setDefaultOrCLocale()
{
#if __unix__
if (!std::setlocale(LC_ALL, ""))
{
setenv("LC_ALL", "C", 1);
}
#endif
}
enum Mode { Binary, Hex, Assembly, ParseTree, Disassemble };
int main(int argc, char** argv)
{
setDefaultOrCLocale();
unsigned optimise = 1;
string infile;
Mode mode = Hex;
for (int i = 1; i < argc; ++i)
{
string arg = argv[i];
if (arg == "-h" || arg == "--help")
help();
else if (arg == "-b" || arg == "--binary")
mode = Binary;
else if (arg == "-x" || arg == "--hex")
mode = Hex;
else if (arg == "-a" || arg == "--assembly")
mode = Assembly;
else if (arg == "-t" || arg == "--parse-tree")
mode = ParseTree;
else if ((arg == "-o" || arg == "--optimise") && argc > i + 1)
optimise = atoi(argv[++i]);
else if (arg == "-d" || arg == "--disassemble")
mode = Disassemble;
else if (arg == "-V" || arg == "--version")
version();
else
infile = argv[i];
}
string src;
if (infile.empty())
{
string s;
while (!cin.eof())
{
getline(cin, s);
src.append(s);
}
}
else
src = contentsString(infile);
vector<string> errors;
if (src.empty())
errors.push_back("Empty file.");
else if (mode == Disassemble)
{
cout << disassemble(fromHex(src)) << endl;
}
else if (mode == Binary || mode == Hex)
{
auto bs = compileLLL(src, optimise ? true : false, &errors);
if (mode == Hex)
cout << toHex(bs) << endl;
else if (mode == Binary)
cout.write((char const*)bs.data(), bs.size());
}
else if (mode == ParseTree)
cout << parseLLL(src) << endl;
else if (mode == Assembly)
cout << compileLLLToAsm(src, optimise ? true : false, &errors) << endl;
for (auto const& i: errors)
cerr << i << endl;
if ( errors.size() )
return 1;
return 0;
}
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