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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::addMagicGlobal(MagicVariableDeclaration const& _declaration)
{
m_magicGlobals.insert(&_declaration);
}
void CompilerContext::addStateVariable(VariableDeclaration const& _declaration)
{
m_stateVariables[&_declaration] = m_stateVariablesSize;
m_stateVariablesSize += _declaration.getType()->getStorageSize();
}
void CompilerContext::addVariable(VariableDeclaration const& _declaration,
unsigned _offsetToCurrent)
{
solAssert(m_asm.deposit() >= 0 && unsigned(m_asm.deposit()) >= _offsetToCurrent, "");
m_localVariables[&_declaration] = unsigned(m_asm.deposit()) - _offsetToCurrent;
}
void CompilerContext::addAndInitializeVariable(VariableDeclaration const& _declaration)
{
addVariable(_declaration);
int const size = _declaration.getType()->getSizeOnStack();
for (int i = 0; i < size; ++i)
*this << u256(0);
}
void CompilerContext::addFunction(Declaration const& _decl)
{
eth::AssemblyItem tag(m_asm.newTag());
m_functionEntryLabels.insert(make_pair(&_decl, tag));
m_virtualFunctionEntryLabels.insert(make_pair(_decl.getName(), tag));
}
void CompilerContext::addModifier(ModifierDefinition const& _modifier)
{
m_functionModifiers.insert(make_pair(_modifier.getName(), &_modifier));
}
bytes const& CompilerContext::getCompiledContract(const ContractDefinition& _contract) const
{
auto ret = m_compiledContracts.find(&_contract);
solAssert(ret != m_compiledContracts.end(), "Compiled contract not found.");
return *ret->second;
}
bool CompilerContext::isLocalVariable(Declaration const* _declaration) const
{
return m_localVariables.count(_declaration);
}
eth::AssemblyItem CompilerContext::getFunctionEntryLabel(Declaration const& _declaration) const
{
auto res = m_functionEntryLabels.find(&_declaration);
solAssert(res != m_functionEntryLabels.end(), "Function entry label not found.");
return res->second.tag();
}
eth::AssemblyItem CompilerContext::getVirtualFunctionEntryLabel(FunctionDefinition const& _function) const
{
auto res = m_virtualFunctionEntryLabels.find(_function.getName());
solAssert(res != m_virtualFunctionEntryLabels.end(), "Function entry label not found.");
return res->second.tag();
}
ModifierDefinition const& CompilerContext::getFunctionModifier(string const& _name) const
{
auto res = m_functionModifiers.find(_name);
solAssert(res != m_functionModifiers.end(), "Function modifier override not found.");
return *res->second;
}
unsigned CompilerContext::getBaseStackOffsetOfVariable(Declaration const& _declaration) const
{
auto res = m_localVariables.find(&_declaration);
solAssert(res != m_localVariables.end(), "Variable not found on stack.");
return res->second;
}
unsigned CompilerContext::baseToCurrentStackOffset(unsigned _baseOffset) const
{
return m_asm.deposit() - _baseOffset - 1;
}
unsigned CompilerContext::currentToBaseStackOffset(unsigned _offset) const
{
return m_asm.deposit() - _offset - 1;
}
u256 CompilerContext::getStorageLocationOfVariable(const Declaration& _declaration) const
{
auto it = m_stateVariables.find(&_declaration);
solAssert(it != m_stateVariables.end(), "Variable not found in storage.");
return it->second;
}
}
}
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