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Add view/pure information about instructions.

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This commit is contained in:
chriseth 2017-08-31 13:13:05 +02:00
parent 41d0ad7a9c
commit 7c61a6daf2
2 changed files with 54 additions and 0 deletions
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52
libevmasm/SemanticInformation.cpp
View File

@ -188,3 +188,55 @@ bool SemanticInformation::invalidatesStorage(Instruction _instruction)
return false; return false;
} }
} }
bool SemanticInformation::invalidInPureFunctions(Instruction _instruction)
{
switch (_instruction)
{
case Instruction::ADDRESS:
case Instruction::BALANCE:
case Instruction::ORIGIN:
case Instruction::CALLER:
case Instruction::CALLVALUE:
case Instruction::GASPRICE:
case Instruction::EXTCODESIZE:
case Instruction::EXTCODECOPY:
case Instruction::BLOCKHASH:
case Instruction::COINBASE:
case Instruction::TIMESTAMP:
case Instruction::NUMBER:
case Instruction::DIFFICULTY:
case Instruction::GASLIMIT:
case Instruction::SLOAD:
return true;
default:
break;
}
return invalidInViewFunctions(_instruction);
}
bool SemanticInformation::invalidInViewFunctions(Instruction _instruction)
{
switch (_instruction)
{
case Instruction::SSTORE:
case Instruction::JUMP:
case Instruction::JUMPI:
case Instruction::GAS:
case Instruction::LOG0:
case Instruction::LOG1:
case Instruction::LOG2:
case Instruction::LOG3:
case Instruction::LOG4:
case Instruction::CREATE:
case Instruction::CALL:
case Instruction::CALLCODE:
case Instruction::DELEGATECALL:
case Instruction::CREATE2:
case Instruction::SELFDESTRUCT:
return true;
default:
break;
}
return false;
}

2
libevmasm/SemanticInformation.h
View File

@ -53,6 +53,8 @@ struct SemanticInformation
static bool invalidatesMemory(solidity::Instruction _instruction); static bool invalidatesMemory(solidity::Instruction _instruction);
/// @returns true if the given instruction modifies storage (even indirectly). /// @returns true if the given instruction modifies storage (even indirectly).
static bool invalidatesStorage(solidity::Instruction _instruction); static bool invalidatesStorage(solidity::Instruction _instruction);
static bool invalidInPureFunctions(solidity::Instruction _instruction);
static bool invalidInViewFunctions(solidity::Instruction _instruction);
}; };
} }