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path: root/widgets/table/e-table-col-dnd.h
Commit message (Expand)AuthorAgeFilesLines
* Remove trailing whitespace, again.Matthew Barnes2009-05-291-1/+1
* License ChangesSankarasivasubramanian Pasupathilingam2008-08-271-16/+16
* updated novell copyright notices (left others alone)Jeffrey Stedfast2008-06-211-1/+1
* ** Remove trailing whitespace from source code.Matthew Barnes2007-11-151-1/+1
* Update FSF address in header comments (#469886). Patch from TobiasMatthew Barnes2007-09-021-2/+2
* merging the gal-2 branch back to the trunk.Mike Kestner2002-11-011-3/+3
* Added #include <libgnome/gnome-defs.h>.Christopher James Lahey2002-01-171-0/+2
* Changed the license announcement at the top of these files.Christopher James Lahey2001-10-271-0/+23
* From a patch submitted by Murray Cumming <Murray.Cumming@mybau.com>Christopher James Lahey2001-02-171-0/+4
* Add missing filesArturo Espinosa1999-12-111-0/+10
generated by cgit (git 2.34.1) at 2024-11-18 02:13:29 +0800
'#n165'>165 166 167 168 169 
/*
    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/>.
*/

#pragma once

#include <libevmasm/Instruction.h>
#include <libevmasm/SourceLocation.h>
#include <libevmasm/AssemblyItem.h>
#include <libevmasm/LinkerObject.h>
#include <libevmasm/Exceptions.h>

#include <libdevcore/Common.h>
#include <libdevcore/Assertions.h>
#include <libdevcore/SHA3.h>

#include <json/json.h>

#include <iostream>
#include <sstream>
#include <memory>

namespace dev
{
namespace eth
{

using AssemblyPointer = std::shared_ptr<Assembly>;

class Assembly
{
public:
    Assembly() {}

    AssemblyItem newTag() { return AssemblyItem(Tag, m_usedTags++); }
    AssemblyItem newPushTag() { return AssemblyItem(PushTag, m_usedTags++); }
    AssemblyItem newData(bytes const& _data) { h256 h(dev::keccak256(asString(_data))); m_data[h] = _data; return AssemblyItem(PushData, h); }
    AssemblyItem newSub(AssemblyPointer const& _sub) { m_subs.push_back(_sub); return AssemblyItem(PushSub, m_subs.size() - 1); }
    Assembly const& sub(size_t _sub) const { return *m_subs.at(_sub); }
    Assembly& sub(size_t _sub) { return *m_subs.at(_sub); }
    AssemblyItem newPushString(std::string const& _data) { h256 h(dev::keccak256(_data)); m_strings[h] = _data; return AssemblyItem(PushString, h); }
    AssemblyItem newPushSubSize(u256 const& _subId) { return AssemblyItem(PushSubSize, _subId); }
    AssemblyItem newPushLibraryAddress(std::string const& _identifier);

    void append(Assembly const& _a);
    void append(Assembly const& _a, int _deposit);
    AssemblyItem const& append(AssemblyItem const& _i);
    AssemblyItem const& append(std::string const& _data) { return append(newPushString(_data)); }
    AssemblyItem const& append(bytes const& _data) { return append(newData(_data)); }
    /// Pushes the final size of the current assembly itself. Use this when the code is modified
    /// after compilation and CODESIZE is not an option.
    void appendProgramSize() { append(AssemblyItem(PushProgramSize)); }
    void appendLibraryAddress(std::string const& _identifier) { append(newPushLibraryAddress(_identifier)); }

    AssemblyItem appendJump() { auto ret = append(newPushTag()); append(solidity::Instruction::JUMP); return ret; }
    AssemblyItem appendJumpI() { auto ret = append(newPushTag()); append(solidity::Instruction::JUMPI); return ret; }
    AssemblyItem appendJump(AssemblyItem const& _tag) { auto ret = append(_tag.pushTag()); append(solidity::Instruction::JUMP); return ret; }
    AssemblyItem appendJumpI(AssemblyItem const& _tag) { auto ret = append(_tag.pushTag()); append(solidity::Instruction::JUMPI); return ret; }

    /// Adds a subroutine to the code (in the data section) and pushes its size (via a tag)
    /// on the stack. @returns the pushsub assembly item.
    AssemblyItem appendSubroutine(AssemblyPointer const& _assembly) { auto sub = newSub(_assembly); append(newPushSubSize(size_t(sub.data()))); return sub; }
    void pushSubroutineSize(size_t _subRoutine) { append(newPushSubSize(_subRoutine)); }
    /// Pushes the offset of the subroutine.
    void pushSubroutineOffset(size_t _subRoutine) { append(AssemblyItem(PushSub, _subRoutine)); }

    /// Appends @a _data literally to the very end of the bytecode.
    void appendAuxiliaryDataToEnd(bytes const& _data) { m_auxiliaryData += _data; }

    template <class T> Assembly& operator<<(T const& _d) { append(_d); return *this; }
    AssemblyItems const& items() const { return m_items; }
    AssemblyItem const& back() const { return m_items.back(); }
    std::string backString() const { return m_items.size() && m_items.back().type() == PushString ? m_strings.at((h256)m_items.back().data()) : std::string(); }

    void injectStart(AssemblyItem const& _i);
    int deposit() const { return m_deposit; }
    void adjustDeposit(int _adjustment) { m_deposit += _adjustment; assertThrow(m_deposit >= 0, InvalidDeposit, ""); }
    void setDeposit(int _deposit) { m_deposit = _deposit; assertThrow(m_deposit >= 0, InvalidDeposit, ""); }

    /// Changes the source location used for each appended item.
    void setSourceLocation(SourceLocation const& _location) { m_currentSourceLocation = _location; }

    /// Assembles the assembly into bytecode. The assembly should not be modified after this call.
    LinkerObject const& assemble() const;
    bytes const& data(h256 const& _i) const { return m_data.at(_i); }

    struct OptimiserSettings
    {
        bool isCreation = false;
        bool runJumpdestRemover = false;
        bool runPeephole = false;
        bool runDeduplicate = false;
        bool runCSE = false;
        bool runConstantOptimiser = false;
        /// This specifies an estimate on how often each opcode in this assembly will be executed,
        /// i.e. use a small value to optimise for size and a large value to optimise for runtime gas usage.
        size_t expectedExecutionsPerDeployment = 200;
    };

    /// Execute optimisation passes as defined by @a _settings and return the optimised assembly.
    Assembly& optimise(OptimiserSettings const& _settings);

    /// Modify (if @a _enable is set) and return the current assembly such that creation and
    /// execution gas usage is optimised. @a _isCreation should be true for the top-level assembly.
    /// @a _runs specifes an estimate on how often each opcode in this assembly will be executed,
    /// i.e. use a small value to optimise for size and a large value to optimise for runtime.
    /// If @a _enable is not set, will perform some simple peephole optimizations.
    Assembly& optimise(bool _enable, bool _isCreation = true, size_t _runs = 200);

    Json::Value stream(
        std::ostream& _out,
        std::string const& _prefix = "",
        const StringMap &_sourceCodes = StringMap(),
        bool _inJsonFormat = false
    ) const;

protected:
    /// Does the same operations as @a optimise, but should only be applied to a sub and
    /// returns the replaced tags. Also takes an argument containing the tags of this assembly
    /// that are referenced in a super-assembly.
    std::map<u256, u256> optimiseInternal(OptimiserSettings const& _settings, std::set<size_t> const& _tagsReferencedFromOutside);

    unsigned bytesRequired(unsigned subTagSize) const;

private:
    Json::Value streamAsmJson(std::ostream& _out, StringMap const& _sourceCodes) const;
    std::ostream& streamAsm(std::ostream& _out, std::string const& _prefix, StringMap const& _sourceCodes) const;
    Json::Value createJsonValue(std::string _name, int _begin, int _end, std::string _value = std::string(), std::string _jumpType = std::string()) const;

protected:
    /// 0 is reserved for exception
    unsigned m_usedTags = 1;
    AssemblyItems m_items;
    std::map<h256, bytes> m_data;
    /// Data that is appended to the very end of the contract.
    bytes m_auxiliaryData;
    std::vector<std::shared_ptr<Assembly>> m_subs;
    std::map<h256, std::string> m_strings;
    std::map<h256, std::string> m_libraries; ///< Identifiers of libraries to be linked.

    mutable LinkerObject m_assembledObject;
    mutable std::vector<size_t> m_tagPositionsInBytecode;

    int m_deposit = 0;

    SourceLocation m_currentSourceLocation;
};

inline std::ostream& operator<<(std::ostream& _out, Assembly const& _a)
{
    _a.stream(_out);
    return _out;
}

}
}
generated by cgit (git 2.34.1) at 2024-11-18 02:13:29 +0800