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/*
    This file is part of solidity.

    solidity 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.

    solidity 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 solidity.  If not, see <http://www.gnu.org/licenses/>.
*/
/**
 * Full assembly stack that can support EVM-assembly and JULIA as input and EVM, EVM1.5 and
 * eWasm as output.
 */


#include <libsolidity/interface/AssemblyStack.h>

#include <libsolidity/parsing/Scanner.h>
#include <libsolidity/inlineasm/AsmPrinter.h>
#include <libsolidity/inlineasm/AsmParser.h>
#include <libsolidity/inlineasm/AsmAnalysis.h>
#include <libsolidity/inlineasm/AsmCodeGen.h>

#include <libevmasm/Assembly.h>

using namespace std;
using namespace dev;
using namespace dev::solidity;


Scanner const& AssemblyStack::scanner() const
{
    solAssert(m_scanner, "");
    return *m_scanner;
}

bool AssemblyStack::parseAndAnalyze(std::string const& _sourceName, std::string const& _source)
{
    m_analysisSuccessful = false;
    m_scanner = make_shared<Scanner>(CharStream(_source), _sourceName);
    m_parserResult = assembly::Parser(m_errorReporter, m_language == Language::JULIA).parse(m_scanner);
    if (!m_errorReporter.errors().empty())
        return false;
    solAssert(m_parserResult, "");

    m_analysisInfo = make_shared<assembly::AsmAnalysisInfo>();
    assembly::AsmAnalyzer analyzer(*m_analysisInfo, m_errorReporter);
    m_analysisSuccessful = analyzer.analyze(*m_parserResult);
    return m_analysisSuccessful;
}

eth::LinkerObject AssemblyStack::assemble(Machine _machine)
{
    solAssert(m_analysisSuccessful, "");
    solAssert(m_parserResult, "");
    solAssert(m_analysisInfo, "");

    switch (_machine)
    {
    case Machine::EVM:
    {
        auto assembly = assembly::CodeGenerator(m_errorReporter).assemble(*m_parserResult, *m_analysisInfo);
        return assembly.assemble();
    }
    case Machine::EVM15:
        solUnimplemented("EVM 1.5 backend is not yet implemented.");
    case Machine::eWasm:
        solUnimplemented("eWasm backend is not yet implemented.");
    }
    // unreachable
    return eth::LinkerObject();
}

string AssemblyStack::print()
{
    solAssert(m_parserResult, "");
    return assembly::AsmPrinter(m_language == Language::JULIA)(*m_parserResult);
}