mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
/*
|
|
This file is part of cpp-ethereum.
|
|
|
|
cpp-ethereum 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.
|
|
|
|
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/**
|
|
* @author Christian <c@ethdev.com>
|
|
* @date 2015
|
|
* Code generation utils that handle arrays.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
namespace dev
|
|
{
|
|
namespace solidity
|
|
{
|
|
|
|
class CompilerContext;
|
|
class Type;
|
|
class ArrayType;
|
|
|
|
/**
|
|
* Class that provides code generation for handling arrays.
|
|
*/
|
|
class ArrayUtils
|
|
{
|
|
public:
|
|
ArrayUtils(CompilerContext& _context): m_context(_context) {}
|
|
|
|
/// Copies an array to an array in storage. The arrays can be of different types only if
|
|
/// their storage representation is the same.
|
|
/// Stack pre: [source_reference] target_reference
|
|
/// Stack post: target_reference
|
|
void copyArrayToStorage(ArrayType const& _targetType, ArrayType const& _sourceType) const;
|
|
/// Clears the given dynamic or static array.
|
|
/// Stack pre: reference
|
|
/// Stack post:
|
|
void clearArray(ArrayType const& _type) const;
|
|
/// Clears the length and data elements of the array referenced on the stack.
|
|
/// Stack pre: reference
|
|
/// Stack post:
|
|
void clearDynamicArray(ArrayType const& _type) const;
|
|
/// Changes the size of a dynamic array and clears the tail if it is shortened.
|
|
/// Stack pre: reference new_length
|
|
/// Stack post:
|
|
void resizeDynamicArray(ArrayType const& _type) const;
|
|
/// Appends a loop that clears a sequence of storage slots of the given type (excluding end).
|
|
/// Stack pre: end_ref start_ref
|
|
/// Stack post: end_ref
|
|
void clearStorageLoop(Type const& _type) const;
|
|
/// Converts length to size (multiplies by size on stack), rounds up for byte arrays.
|
|
/// Stack pre: length
|
|
/// Stack post: size
|
|
void convertLengthToSize(ArrayType const& _arrayType) const;
|
|
/// Retrieves the length (number of elements) of the array ref on the stack. This also
|
|
/// works for statically-sized arrays.
|
|
/// Stack pre: reference
|
|
/// Stack post: reference length
|
|
void retrieveLength(ArrayType const& _arrayType) const;
|
|
|
|
private:
|
|
CompilerContext& m_context;
|
|
};
|
|
|
|
}
|
|
}
|