mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
104 lines
3.1 KiB
C++
104 lines
3.1 KiB
C++
/*
|
|
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/>.
|
|
*/
|
|
/**
|
|
* Analysis part of inline assembly.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <libsolidity/inlineasm/AsmStack.h>
|
|
|
|
#include <libsolidity/interface/Exceptions.h>
|
|
|
|
#include <boost/variant.hpp>
|
|
|
|
#include <functional>
|
|
#include <memory>
|
|
|
|
namespace dev
|
|
{
|
|
namespace solidity
|
|
{
|
|
namespace assembly
|
|
{
|
|
|
|
struct Literal;
|
|
struct Block;
|
|
struct Label;
|
|
struct FunctionalInstruction;
|
|
struct Assignment;
|
|
struct VariableDeclaration;
|
|
struct Instruction;
|
|
struct Identifier;
|
|
struct StackAssignment;
|
|
struct FunctionDefinition;
|
|
struct FunctionCall;
|
|
|
|
struct Scope;
|
|
|
|
struct AsmAnalysisInfo;
|
|
|
|
/**
|
|
* Performs the full analysis stage, calls the ScopeFiller internally, then resolves
|
|
* references and performs other checks.
|
|
* If all these checks pass, code generation should not throw errors.
|
|
*/
|
|
class AsmAnalyzer: public boost::static_visitor<bool>
|
|
{
|
|
public:
|
|
AsmAnalyzer(
|
|
AsmAnalysisInfo& _analysisInfo,
|
|
ErrorList& _errors,
|
|
ExternalIdentifierAccess::Resolver const& _resolver = ExternalIdentifierAccess::Resolver()
|
|
);
|
|
|
|
bool analyze(assembly::Block const& _block);
|
|
|
|
bool operator()(assembly::Instruction const&);
|
|
bool operator()(assembly::Literal const& _literal);
|
|
bool operator()(assembly::Identifier const&);
|
|
bool operator()(assembly::FunctionalInstruction const& _functionalInstruction);
|
|
bool operator()(assembly::Label const& _label);
|
|
bool operator()(assembly::StackAssignment const&);
|
|
bool operator()(assembly::Assignment const& _assignment);
|
|
bool operator()(assembly::VariableDeclaration const& _variableDeclaration);
|
|
bool operator()(assembly::FunctionDefinition const& _functionDefinition);
|
|
bool operator()(assembly::FunctionCall const& _functionCall);
|
|
bool operator()(assembly::Block const& _block);
|
|
|
|
private:
|
|
/// Verifies that a variable to be assigned to exists and has the same size
|
|
/// as the value, @a _valueSize, unless that is equal to -1.
|
|
bool checkAssignment(assembly::Identifier const& _assignment, size_t _valueSize = size_t(-1));
|
|
bool expectDeposit(int _deposit, int _oldHeight, SourceLocation const& _location);
|
|
Scope& scope(assembly::Block const* _block);
|
|
|
|
/// This is used when we enter the body of a function definition. There, the parameters
|
|
/// and return parameters appear as variables which are already on the stack before
|
|
/// we enter the block.
|
|
int m_virtualVariablesInNextBlock = 0;
|
|
int m_stackHeight = 0;
|
|
ExternalIdentifierAccess::Resolver const& m_resolver;
|
|
Scope* m_currentScope = nullptr;
|
|
AsmAnalysisInfo& m_info;
|
|
ErrorList& m_errors;
|
|
};
|
|
|
|
}
|
|
}
|
|
}
|