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@ -21,7 +21,7 @@ |
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#pragma once |
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#pragma once |
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#include <list> |
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#include <set> |
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#include <functional> |
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#include <functional> |
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#include <libdevcore/Common.h> |
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#include <libdevcore/Common.h> |
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#include <libevmface/Instruction.h> |
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#include <libevmface/Instruction.h> |
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@ -45,49 +45,54 @@ struct Post |
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using OnOpFunc = std::function<void(uint64_t /*steps*/, Instruction /*instr*/, bigint /*newMemSize*/, bigint /*gasCost*/, void/*VM*/*, void/*ExtVM*/ const*)>; |
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using OnOpFunc = std::function<void(uint64_t /*steps*/, Instruction /*instr*/, bigint /*newMemSize*/, bigint /*gasCost*/, void/*VM*/*, void/*ExtVM*/ const*)>; |
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/**
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/**
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* @brief A null implementation of the class for specifying VM externalities. |
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* @brief Interface and null implementation of the class for specifying VM externalities. |
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*/ |
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*/ |
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class ExtVMFace |
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class ExtVMFace |
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{ |
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{ |
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public: |
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public: |
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/// Null constructor.
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/// Null constructor.
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ExtVMFace() {} |
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ExtVMFace() = default; |
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/// Full constructor.
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/// Full constructor.
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ExtVMFace(Address _myAddress, Address _caller, Address _origin, u256 _value, u256 _gasPrice, bytesConstRef _data, bytesConstRef _code, BlockInfo const& _previousBlock, BlockInfo const& _currentBlock, unsigned _depth); |
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ExtVMFace(Address _myAddress, Address _caller, Address _origin, u256 _value, u256 _gasPrice, bytesConstRef _data, bytesConstRef _code, BlockInfo const& _previousBlock, BlockInfo const& _currentBlock, unsigned _depth); |
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/// Get the code at the given location in code ROM.
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virtual ~ExtVMFace() = default; |
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byte getCode(u256 _n) const { return _n < code.size() ? code[(unsigned)_n] : 0; } |
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ExtVMFace(ExtVMFace const&) = delete; |
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void operator=(ExtVMFace) = delete; |
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/// Read storage location.
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/// Read storage location.
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u256 store(u256) { return 0; } |
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virtual u256 store(u256) { return 0; } |
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/// Write a value in storage.
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/// Write a value in storage.
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void setStore(u256, u256) {} |
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virtual void setStore(u256, u256) {} |
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/// Read address's balance.
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/// Read address's balance.
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u256 balance(Address) { return 0; } |
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virtual u256 balance(Address) { return 0; } |
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/// Read address's code.
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/// Read address's code.
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bytes const& codeAt(Address) { return NullBytes; } |
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virtual bytes const& codeAt(Address) { return NullBytes; } |
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/// Subtract amount from account's balance.
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/// Subtract amount from account's balance.
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void subBalance(u256) {} |
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virtual void subBalance(u256) {} |
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/// Determine account's TX count.
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/// Determine account's TX count.
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u256 txCount(Address) { return 0; } |
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virtual u256 txCount(Address) { return 0; } |
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/// Suicide the associated contract and give proceeds to the given address.
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/// Suicide the associated contract and give proceeds to the given address.
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void suicide(Address) { suicides.insert(myAddress); } |
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virtual void suicide(Address) { suicides.insert(myAddress); } |
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/// Create a new (contract) account.
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/// Create a new (contract) account.
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h160 create(u256, u256*, bytesConstRef, bytesConstRef) { return h160(); } |
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virtual h160 create(u256, u256*, bytesConstRef, OnOpFunc const&) { return h160(); } |
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/// Make a new message call.
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/// Make a new message call.
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bool call(Address, u256, bytesConstRef, u256*, bytesRef, OnOpFunc const&, Address, Address) { return false; } |
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virtual bool call(Address, u256, bytesConstRef, u256*, bytesRef, OnOpFunc const&, Address, Address) { return false; } |
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/// Revert any changes made (by any of the other calls).
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/// Revert any changes made (by any of the other calls).
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void revert() {} |
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virtual void revert() {} |
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/// Get the code at the given location in code ROM.
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byte getCode(u256 _n) const { return _n < code.size() ? code[(size_t)_n] : 0; } |
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Address myAddress; ///< Address associated with executing code (a contract, or contract-to-be).
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Address myAddress; ///< Address associated with executing code (a contract, or contract-to-be).
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Address caller; ///< Address which sent the message (either equal to origin or a contract).
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Address caller; ///< Address which sent the message (either equal to origin or a contract).
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Gav Wood
10 years ago