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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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2017
* Converts a parsed assembly into its textual form.
*/
#include <libsolidity/inlineasm/AsmPrinter.h>
#include <libsolidity/inlineasm/AsmData.h>
#include <libsolidity/interface/Exceptions.h>
#include <boost/algorithm/string.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/range/adaptor/transformed.hpp>
#include <memory>
#include <functional>
using namespace std;
using namespace dev;
using namespace dev::solidity;
using namespace dev::solidity::assembly;
//@TODO source locations
string AsmPrinter::operator()(assembly::Instruction const& _instruction)
{
solAssert(!m_julia, "");
return boost::to_lower_copy(instructionInfo(_instruction.instruction).name);
}
string AsmPrinter::operator()(assembly::Literal const& _literal)
{
switch (_literal.kind)
{
case LiteralKind::Number:
return _literal.value + appendTypeName(_literal.type);
case LiteralKind::Boolean:
return ((_literal.value == "true") ? "true" : "false") + appendTypeName(_literal.type);
case LiteralKind::String:
break;
}
string out;
for (char c: _literal.value)
if (c == '\\')
out += "\\\\";
else if (c == '"')
out += "\\\"";
else if (c == '\b')
out += "\\b";
else if (c == '\f')
out += "\\f";
else if (c == '\n')
out += "\\n";
else if (c == '\r')
out += "\\r";
else if (c == '\t')
out += "\\t";
else if (c == '\v')
out += "\\v";
else if (!isprint(c, locale::classic()))
{
ostringstream o;
o << std::hex << setfill('0') << setw(2) << (unsigned)(unsigned char)(c);
out += "\\x" + o.str();
}
else
out += c;
return "\"" + out + "\"" + appendTypeName(_literal.type);
}
string AsmPrinter::operator()(assembly::Identifier const& _identifier)
{
return _identifier.name;
}
string AsmPrinter::operator()(assembly::FunctionalInstruction const& _functionalInstruction)
{
solAssert(!m_julia, "");
return
(*this)(_functionalInstruction.instruction) +
"(" +
boost::algorithm::join(
_functionalInstruction.arguments | boost::adaptors::transformed(boost::apply_visitor(*this)),
", " ) +
")";
}
string AsmPrinter::operator()(assembly::Label const& _label)
{
solAssert(!m_julia, "");
return _label.name + ":";
}
string AsmPrinter::operator()(assembly::StackAssignment const& _assignment)
{
solAssert(!m_julia, "");
return "=: " + (*this)(_assignment.variableName);
}
string AsmPrinter::operator()(assembly::Assignment const& _assignment)
{
return (*this)(_assignment.variableName) + " := " + boost::apply_visitor(*this, *_assignment.value);
}
string AsmPrinter::operator()(assembly::VariableDeclaration const& _variableDeclaration)
{
string out = "let ";
out += boost::algorithm::join(
_variableDeclaration.variables | boost::adaptors::transformed(
[this](TypedName variable) { return variable.name + appendTypeName(variable.type); }
),
", "
);
out += " := ";
out += boost::apply_visitor(*this, *_variableDeclaration.value);
return out;
}
string AsmPrinter::operator()(assembly::FunctionDefinition const& _functionDefinition)
{
string out = "function " + _functionDefinition.name + "(";
out += boost::algorithm::join(
_functionDefinition.arguments | boost::adaptors::transformed(
[this](TypedName argument) { return argument.name + appendTypeName(argument.type); }
),
", "
);
out += ")";
if (!_functionDefinition.returns.empty())
{
out += " -> ";
out += boost::algorithm::join(
_functionDefinition.returns | boost::adaptors::transformed(
[this](TypedName argument) { return argument.name + appendTypeName(argument.type); }
),
", "
);
}
return out + "\n" + (*this)(_functionDefinition.body);
}
string AsmPrinter::operator()(assembly::FunctionCall const& _functionCall)
{
return
(*this)(_functionCall.functionName) + "(" +
boost::algorithm::join(
_functionCall.arguments | boost::adaptors::transformed(boost::apply_visitor(*this)),
", " ) +
")";
}
string AsmPrinter::operator()(Switch const& _switch)
{
string out = "switch " + boost::apply_visitor(*this, *_switch.expression);
for (auto const& _case: _switch.cases)
{
if (!_case.value)
out += "\ndefault ";
else
out += "\ncase " + (*this)(*_case.value) + " ";
out += (*this)(_case.body);
}
return out;
}
string AsmPrinter::operator()(assembly::ForLoop const& _forLoop)
{
string out = "for ";
out += (*this)(_forLoop.pre);
out += "\n";
out += boost::apply_visitor(*this, *_forLoop.condition);
out += "\n";
out += (*this)(_forLoop.post);
out += "\n";
out += (*this)(_forLoop.body);
return out;
}
string AsmPrinter::operator()(Block const& _block)
{
if (_block.statements.empty())
return "{\n}";
string body = boost::algorithm::join(
_block.statements | boost::adaptors::transformed(boost::apply_visitor(*this)),
"\n"
);
boost::replace_all(body, "\n", "\n ");
return "{\n " + body + "\n}";
}
string AsmPrinter::appendTypeName(std::string const& _type)
{
if (m_julia)
return ":" + _type;
return "";
}
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