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@ -212,12 +212,12 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas |
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evm.StateDB.CreateAccount(addr) |
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} |
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evm.Transfer(evm.StateDB, caller.Address(), to.Address(), value) |
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// Initialise a new contract and set the code that is to be used by the EVM.
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// The contract is a scoped environment for this execution context only.
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contract := NewContract(caller, to, value, gas) |
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contract.SetCallCode(&addr, evm.StateDB.GetCodeHash(addr), evm.StateDB.GetCode(addr)) |
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// Even if the account has no code, we need to continue because it might be a precompile
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start := time.Now() |
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// Capture the tracer start/end events in debug mode
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@ -352,8 +352,20 @@ func (evm *EVM) StaticCall(caller ContractRef, addr common.Address, input []byte |
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return ret, contract.Gas, err |
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} |
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type codeAndHash struct { |
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code []byte |
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hash common.Hash |
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} |
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func (c *codeAndHash) Hash() common.Hash { |
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if c.hash == (common.Hash{}) { |
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c.hash = crypto.Keccak256Hash(c.code) |
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} |
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return c.hash |
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} |
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// create creates a new contract using code as deployment code.
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func (evm *EVM) create(caller ContractRef, code []byte, gas uint64, value *big.Int, address common.Address) ([]byte, common.Address, uint64, error) { |
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func (evm *EVM) create(caller ContractRef, codeAndHash *codeAndHash, gas uint64, value *big.Int, address common.Address) ([]byte, common.Address, uint64, error) { |
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// Depth check execution. Fail if we're trying to execute above the
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// limit.
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if evm.depth > int(params.CallCreateDepth) { |
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@ -382,14 +394,14 @@ func (evm *EVM) create(caller ContractRef, code []byte, gas uint64, value *big.I |
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// EVM. The contract is a scoped environment for this execution context
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// only.
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contract := NewContract(caller, AccountRef(address), value, gas) |
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contract.SetCallCode(&address, crypto.Keccak256Hash(code), code) |
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contract.SetCodeOptionalHash(&address, codeAndHash) |
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if evm.vmConfig.NoRecursion && evm.depth > 0 { |
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return nil, address, gas, nil |
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} |
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if evm.vmConfig.Debug && evm.depth == 0 { |
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evm.vmConfig.Tracer.CaptureStart(caller.Address(), address, true, code, gas, value) |
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evm.vmConfig.Tracer.CaptureStart(caller.Address(), address, true, codeAndHash.code, gas, value) |
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} |
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start := time.Now() |
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@ -433,7 +445,7 @@ func (evm *EVM) create(caller ContractRef, code []byte, gas uint64, value *big.I |
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// Create creates a new contract using code as deployment code.
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func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) { |
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contractAddr = crypto.CreateAddress(caller.Address(), evm.StateDB.GetNonce(caller.Address())) |
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return evm.create(caller, code, gas, value, contractAddr) |
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return evm.create(caller, &codeAndHash{code: code}, gas, value, contractAddr) |
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} |
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// Create2 creates a new contract using code as deployment code.
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@ -441,8 +453,9 @@ func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.I |
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// The different between Create2 with Create is Create2 uses sha3(0xff ++ msg.sender ++ salt ++ sha3(init_code))[12:]
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// instead of the usual sender-and-nonce-hash as the address where the contract is initialized at.
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func (evm *EVM) Create2(caller ContractRef, code []byte, gas uint64, endowment *big.Int, salt *big.Int) (ret []byte, contractAddr common.Address, leftOverGas uint64, err error) { |
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contractAddr = crypto.CreateAddress2(caller.Address(), common.BigToHash(salt), code) |
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return evm.create(caller, code, gas, endowment, contractAddr) |
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codeAndHash := &codeAndHash{code: code} |
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contractAddr = crypto.CreateAddress2(caller.Address(), common.BigToHash(salt), codeAndHash.Hash().Bytes()) |
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return evm.create(caller, codeAndHash, gas, endowment, contractAddr) |
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} |
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// ChainConfig returns the environment's chain configuration
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