mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
96 lines
4.5 KiB
C++
96 lines
4.5 KiB
C++
/*
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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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* Solidity AST to EVM bytecode compiler.
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*/
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#include <ostream>
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#include <functional>
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#include <libsolidity/ASTVisitor.h>
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#include <libsolidity/CompilerContext.h>
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namespace dev {
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namespace solidity {
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class Compiler: private ASTConstVisitor
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{
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public:
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explicit Compiler(bool _optimize = false): m_optimize(_optimize), m_context(),
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m_returnTag(m_context.newTag()) {}
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void compileContract(ContractDefinition const& _contract,
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std::map<ContractDefinition const*, bytes const*> const& _contracts);
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bytes getAssembledBytecode() { return m_context.getAssembledBytecode(m_optimize); }
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bytes getRuntimeBytecode() { return m_runtimeContext.getAssembledBytecode(m_optimize);}
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void streamAssembly(std::ostream& _stream) const { m_context.streamAssembly(_stream); }
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private:
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/// Registers the non-function objects inside the contract with the context.
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void initializeContext(ContractDefinition const& _contract,
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std::map<ContractDefinition const*, bytes const*> const& _contracts);
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/// Adds the code that is run at creation time. Should be run after exchanging the run-time context
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/// with a new and initialized context. Adds the constructor code.
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void packIntoContractCreator(ContractDefinition const& _contract, CompilerContext const& _runtimeContext);
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void appendBaseConstructorCall(FunctionDefinition const& _constructor,
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std::vector<ASTPointer<Expression>> const& _arguments);
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void appendConstructorCall(FunctionDefinition const& _constructor);
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/// Recursively searches the call graph and returns all functions referenced inside _nodes.
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/// _resolveOverride is called to resolve virtual function overrides.
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std::set<FunctionDefinition const*> getFunctionsCalled(std::set<ASTNode const*> const& _nodes,
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std::function<FunctionDefinition const*(std::string const&)> const& _resolveFunctionOverride,
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std::function<ModifierDefinition const*(std::string const&)> const& _resolveModifierOverride);
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void appendFunctionSelector(ContractDefinition const& _contract);
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/// Creates code that unpacks the arguments for the given function, from memory if
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/// @a _fromMemory is true, otherwise from call data. @returns the size of the data in bytes.
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unsigned appendCalldataUnpacker(FunctionDefinition const& _function, bool _fromMemory = false);
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void appendReturnValuePacker(FunctionDefinition const& _function);
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void registerStateVariables(ContractDefinition const& _contract);
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virtual bool visit(FunctionDefinition const& _function) override;
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virtual bool visit(IfStatement const& _ifStatement) override;
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virtual bool visit(WhileStatement const& _whileStatement) override;
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virtual bool visit(ForStatement const& _forStatement) override;
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virtual bool visit(Continue const& _continue) override;
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virtual bool visit(Break const& _break) override;
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virtual bool visit(Return const& _return) override;
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virtual bool visit(VariableDefinition const& _variableDefinition) override;
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virtual bool visit(ExpressionStatement const& _expressionStatement) override;
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virtual bool visit(PlaceholderStatement const&) override;
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/// Appends one layer of function modifier code of the current function, or the function
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/// body itself if the last modifier was reached.
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void appendModifierOrFunctionCode();
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void compileExpression(Expression const& _expression, TypePointer const& _targetType = TypePointer());
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bool const m_optimize;
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CompilerContext m_context;
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CompilerContext m_runtimeContext;
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std::vector<eth::AssemblyItem> m_breakTags; ///< tag to jump to for a "break" statement
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std::vector<eth::AssemblyItem> m_continueTags; ///< tag to jump to for a "continue" statement
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eth::AssemblyItem m_returnTag; ///< tag to jump to for a "return" statement
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unsigned m_modifierDepth = 0;
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FunctionDefinition const* m_currentFunction;
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unsigned m_stackCleanupForReturn; ///< this number of stack elements need to be removed before jump to m_returnTag
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};
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}
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}
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