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Provide access to storage offsets via contract type.

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This commit is contained in:
chriseth 2015-03-16 16:15:13 +01:00
parent ed757ba5bf
commit 895c08342c
3 changed files with 30 additions and 17 deletions
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17
Compiler.cpp
View File

@ -20,12 +20,12 @@
* Solidity compiler.
*/
#include <libsolidity/Compiler.h>
#include <algorithm>
#include <boost/range/adaptor/reversed.hpp>
#include <libevmcore/Instruction.h>
#include <libevmcore/Assembly.h>
#include <libsolidity/AST.h>
#include <libsolidity/Compiler.h>
#include <libsolidity/ExpressionCompiler.h>
#include <libsolidity/CompilerUtils.h>
@ -274,19 +274,8 @@ void Compiler::appendReturnValuePacker(TypePointers const& _typeParameters)
void Compiler::registerStateVariables(ContractDefinition const& _contract)
{
vector<VariableDeclaration const*> variables;
for (ContractDefinition const* contract: boost::adaptors::reverse(_contract.getLinearizedBaseContracts()))
for (ASTPointer<VariableDeclaration> const& variable: contract->getStateVariables())
if (!variable->isConstant())
variables.push_back(variable.get());
TypePointers types;
for (auto variable: variables)
types.push_back(variable->getType());
StorageOffsets offsets;
offsets.computeOffsets(types);
for (size_t index = 0; index < variables.size(); ++index)
if (auto const* offset = offsets.getOffset(index))
m_context.addStateVariable(*variables[index], offset->first, offset->second);
for (auto const& var: ContractType(_contract).getStateVariables())
m_context.addStateVariable(*get<0>(var), get<1>(var), get<2>(var));
}
void Compiler::initializeStateVariables(ContractDefinition const& _contract)

26
Types.cpp
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@ -20,14 +20,14 @@
* Solidity data types
*/
#include <libsolidity/Types.h>
#include <limits>
#include <boost/range/adaptor/reversed.hpp>
#include <libdevcore/CommonIO.h>
#include <libdevcore/CommonData.h>
#include <libsolidity/Utils.h>
#include <libsolidity/Types.h>
#include <libsolidity/AST.h>
#include <limits>
using namespace std;
namespace dev
@ -812,6 +812,26 @@ u256 ContractType::getFunctionIdentifier(string const& _functionName) const
return Invalid256;
}
vector<tuple<VariableDeclaration const*, u256, unsigned>> ContractType::getStateVariables() const
{
vector<VariableDeclaration const*> variables;
for (ContractDefinition const* contract: boost::adaptors::reverse(m_contract.getLinearizedBaseContracts()))
for (ASTPointer<VariableDeclaration> const& variable: contract->getStateVariables())
if (!variable->isConstant())
variables.push_back(variable.get());
TypePointers types;
for (auto variable: variables)
types.push_back(variable->getType());
StorageOffsets offsets;
offsets.computeOffsets(types);
vector<tuple<VariableDeclaration const*, u256, unsigned>> variablesAndOffsets;
for (size_t index = 0; index < variables.size(); ++index)
if (auto const* offset = offsets.getOffset(index))
variablesAndOffsets.push_back(make_tuple(variables[index], offset->first, offset->second));
return variablesAndOffsets;
}
TypePointer StructType::unaryOperatorResult(Token::Value _operator) const
{
return _operator == Token::Delete ? make_shared<VoidType>() : TypePointer();

4
Types.h
View File

@ -403,6 +403,10 @@ public:
/// not exist.
u256 getFunctionIdentifier(std::string const& _functionName) const;
/// @returns a list of all state variables (including inherited) of the contract and their
/// offsets in storage.
std::vector<std::tuple<VariableDeclaration const*, u256, unsigned>> getStateVariables() const;
private:
ContractDefinition const& m_contract;
/// If true, it is the "super" type of the current contract, i.e. it contains only inherited