diff options
Diffstat (limited to 'libsolidity/LValue.h')
| -rw-r--r-- | libsolidity/LValue.h | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/libsolidity/LValue.h b/libsolidity/LValue.h index cbbfb102..94c8d3b8 100644 --- a/libsolidity/LValue.h +++ b/libsolidity/LValue.h @@ -23,6 +23,7 @@ #pragma once #include <memory> +#include <vector> #include <libevmasm/SourceLocation.h> #include <libsolidity/ArrayUtils.h> @@ -33,6 +34,7 @@ namespace solidity class Declaration; class Type; +class TupleType; class ArrayType; class CompilerContext; class VariableDeclaration; @@ -43,7 +45,7 @@ class VariableDeclaration; class LValue { protected: - LValue(CompilerContext& _compilerContext, Type const& _dataType): + explicit LValue(CompilerContext& _compilerContext, Type const* _dataType = nullptr): m_context(_compilerContext), m_dataType(_dataType) {} public: @@ -68,7 +70,7 @@ public: protected: CompilerContext& m_context; - Type const& m_dataType; + Type const* m_dataType; }; /** @@ -193,5 +195,30 @@ private: ArrayType const& m_arrayType; }; +/** + * Tuple object that can itself hold several LValues. + */ +class TupleObject: public LValue +{ +public: + /// Constructs the LValue assuming that the other LValues are present on the stack. + /// Empty unique_ptrs are possible if e.g. some values should be ignored during assignment. + TupleObject(CompilerContext& _compilerContext, std::vector<std::unique_ptr<LValue>>&& _lvalues); + virtual unsigned sizeOnStack() const; + virtual void retrieveValue(SourceLocation const& _location, bool _remove = false) const override; + virtual void storeValue( + Type const& _sourceType, + SourceLocation const& _location = SourceLocation(), + bool _move = false + ) const override; + virtual void setToZero( + SourceLocation const& _location = SourceLocation(), + bool _removeReference = true + ) const override; + +private: + std::vector<std::unique_ptr<LValue>> m_lvalues; +}; + } } |