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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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Utilities for the solidity compiler.
*/
#include <utility>
#include <numeric>
#include <libsolidity/AST.h>
#include <libsolidity/Compiler.h>
using namespace std;
namespace dev {
namespace solidity {
void CompilerContext::initializeLocalVariables(unsigned _numVariables)
{
if (_numVariables > 0)
{
*this << u256(0);
for (unsigned i = 1; i < _numVariables; ++i)
*this << eth::Instruction::DUP1;
m_asm.adjustDeposit(-_numVariables);
}
}
int CompilerContext::getStackPositionOfVariable(Declaration const& _declaration)
{
auto res = find(begin(m_localVariables), end(m_localVariables), &_declaration);
if (asserts(res != m_localVariables.end()))
BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Variable not found on stack."));
return end(m_localVariables) - res - 1 + m_asm.deposit();
}
eth::AssemblyItem CompilerContext::getFunctionEntryLabel(FunctionDefinition const& _function) const
{
auto res = m_functionEntryLabels.find(&_function);
if (asserts(res != m_functionEntryLabels.end()))
BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Function entry label not found."));
return res->second.tag();
}
}
}
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