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132 lines
4.0 KiB
132 lines
4.0 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @author Christian <c@ethdev.com>
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* @date 2014
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* Utilities for the solidity compiler.
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*/
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#include <utility>
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#include <numeric>
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#include <libsolidity/AST.h>
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#include <libsolidity/Compiler.h>
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using namespace std;
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namespace dev
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{
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namespace solidity
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{
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void CompilerContext::addMagicGlobal(MagicVariableDeclaration const& _declaration)
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{
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m_magicGlobals.insert(&_declaration);
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}
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void CompilerContext::addStateVariable(VariableDeclaration const& _declaration)
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{
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m_stateVariables[&_declaration] = m_stateVariablesSize;
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m_stateVariablesSize += _declaration.getType()->getStorageSize();
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}
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void CompilerContext::addVariable(VariableDeclaration const& _declaration,
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unsigned _offsetToCurrent)
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{
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solAssert(m_asm.deposit() >= 0 && unsigned(m_asm.deposit()) >= _offsetToCurrent, "");
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m_localVariables[&_declaration] = unsigned(m_asm.deposit()) - _offsetToCurrent;
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}
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void CompilerContext::addAndInitializeVariable(VariableDeclaration const& _declaration)
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{
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addVariable(_declaration);
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int const size = _declaration.getType()->getSizeOnStack();
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for (int i = 0; i < size; ++i)
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*this << u256(0);
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}
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void CompilerContext::addFunction(FunctionDefinition const& _function)
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{
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eth::AssemblyItem tag(m_asm.newTag());
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m_functionEntryLabels.insert(make_pair(&_function, tag));
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m_virtualFunctionEntryLabels.insert(make_pair(_function.getName(), tag));
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}
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void CompilerContext::addModifier(ModifierDefinition const& _modifier)
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{
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m_functionModifiers.insert(make_pair(_modifier.getName(), &_modifier));
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}
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bytes const& CompilerContext::getCompiledContract(const ContractDefinition& _contract) const
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{
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auto ret = m_compiledContracts.find(&_contract);
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solAssert(ret != m_compiledContracts.end(), "Compiled contract not found.");
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return *ret->second;
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}
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bool CompilerContext::isLocalVariable(Declaration const* _declaration) const
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{
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return m_localVariables.count(_declaration);
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}
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eth::AssemblyItem CompilerContext::getFunctionEntryLabel(FunctionDefinition const& _function) const
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{
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auto res = m_functionEntryLabels.find(&_function);
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solAssert(res != m_functionEntryLabels.end(), "Function entry label not found.");
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return res->second.tag();
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}
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eth::AssemblyItem CompilerContext::getVirtualFunctionEntryLabel(FunctionDefinition const& _function) const
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{
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auto res = m_virtualFunctionEntryLabels.find(_function.getName());
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solAssert(res != m_virtualFunctionEntryLabels.end(), "Function entry label not found.");
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return res->second.tag();
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}
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ModifierDefinition const& CompilerContext::getFunctionModifier(string const& _name) const
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{
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auto res = m_functionModifiers.find(_name);
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solAssert(res != m_functionModifiers.end(), "Function modifier override not found.");
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return *res->second;
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}
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unsigned CompilerContext::getBaseStackOffsetOfVariable(Declaration const& _declaration) const
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{
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auto res = m_localVariables.find(&_declaration);
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solAssert(res != m_localVariables.end(), "Variable not found on stack.");
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return res->second;
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}
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unsigned CompilerContext::baseToCurrentStackOffset(unsigned _baseOffset) const
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{
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return m_asm.deposit() - _baseOffset - 1;
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}
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unsigned CompilerContext::currentToBaseStackOffset(unsigned _offset) const
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{
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return m_asm.deposit() - _offset - 1;
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}
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u256 CompilerContext::getStorageLocationOfVariable(const Declaration& _declaration) const
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{
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auto it = m_stateVariables.find(&_declaration);
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solAssert(it != m_stateVariables.end(), "Variable not found in storage.");
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return it->second;
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}
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}
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}
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