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Reorganize source file hierarchy:
* Rename unity files * Move some modules to new subdirectories * Remove obsolete Visual Studio project files * Remove obsolete coding style and TODO list
This commit is contained in:
Vinnie Falco
228
src/ripple/module/app/contracts/Interpreter.cpp
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228
src/ripple/module/app/contracts/Interpreter.cpp
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//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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namespace ripple {
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namespace Script
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{
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Interpreter::Interpreter ()
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{
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mContract = nullptr;
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mCode = nullptr;
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mInstructionPointer = 0;
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mTotalFee = 0;
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mInBlock = false;
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mBlockSuccess = true;
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mBlockJump = 0;
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mFunctionTable.resize (NUM_OF_OPS);
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mFunctionTable[INT_OP] = new IntOp ();
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mFunctionTable[FLOAT_OP] = new FloatOp ();
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mFunctionTable[UINT160_OP] = new Uint160Op ();
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mFunctionTable[BOOL_OP] = new Uint160Op ();
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mFunctionTable[PATH_OP] = new Uint160Op ();
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mFunctionTable[ADD_OP] = new AddOp ();
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mFunctionTable[SUB_OP] = new SubOp ();
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mFunctionTable[MUL_OP] = new MulOp ();
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mFunctionTable[DIV_OP] = new DivOp ();
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mFunctionTable[MOD_OP] = new ModOp ();
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mFunctionTable[GTR_OP] = new GtrOp ();
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mFunctionTable[LESS_OP] = new LessOp ();
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mFunctionTable[EQUAL_OP] = new SubOp ();
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mFunctionTable[NOT_EQUAL_OP] = new SubOp ();
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mFunctionTable[AND_OP] = new SubOp ();
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mFunctionTable[OR_OP] = new SubOp ();
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mFunctionTable[NOT_OP] = new SubOp ();
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mFunctionTable[JUMP_OP] = new SubOp ();
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mFunctionTable[JUMPIF_OP] = new SubOp ();
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mFunctionTable[STOP_OP] = new SubOp ();
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mFunctionTable[CANCEL_OP] = new SubOp ();
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mFunctionTable[BLOCK_OP] = new SubOp ();
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mFunctionTable[BLOCK_END_OP] = new SubOp ();
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mFunctionTable[SEND_XRP_OP] = new SendXRPOp ();
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/*
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mFunctionTable[SEND_OP]=new SendOp();
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mFunctionTable[REMOVE_CONTRACT_OP]=new SubOp();
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mFunctionTable[FEE_OP]=new SubOp();
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mFunctionTable[CHANGE_CONTRACT_OWNER_OP]=new SubOp();
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mFunctionTable[STOP_REMOVE_OP]=new SubOp();
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mFunctionTable[SET_DATA_OP]=new SubOp();
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mFunctionTable[GET_DATA_OP]=new SubOp();
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mFunctionTable[GET_NUM_DATA_OP]=new SubOp();
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mFunctionTable[SET_REGISTER_OP]=new SubOp();
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mFunctionTable[GET_REGISTER_OP]=new SubOp();
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mFunctionTable[GET_ISSUER_ID_OP]=new SubOp();
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mFunctionTable[GET_OWNER_ID_OP]=new SubOp();
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mFunctionTable[GET_LEDGER_TIME_OP]=new SubOp();
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mFunctionTable[GET_LEDGER_NUM_OP]=new SubOp();
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mFunctionTable[GET_RAND_FLOAT_OP]=new SubOp();
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mFunctionTable[GET_XRP_ESCROWED_OP]=new SubOp();
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mFunctionTable[GET_RIPPLE_ESCROWED_OP]=new SubOp();
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mFunctionTable[GET_RIPPLE_ESCROWED_CURRENCY_OP]=new SubOp();
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mFunctionTable[GET_RIPPLE_ESCROWED_ISSUER]=new GetRippleEscrowedIssuerOp();
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mFunctionTable[GET_ACCEPT_DATA_OP]=new AcceptDataOp();
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mFunctionTable[GET_ACCEPTOR_ID_OP]=new GetAcceptorIDOp();
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mFunctionTable[GET_CONTRACT_ID_OP]=new GetContractIDOp();
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*/
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}
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Data::pointer Interpreter::popStack ()
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{
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if (mStack.size ())
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{
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Data::pointer item = mStack[mStack.size () - 1];
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mStack.pop_back ();
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return (item);
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}
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else
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{
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return (Data::pointer (new ErrorData ()));
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}
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}
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void Interpreter::pushStack (Data::pointer data)
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{
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mStack.push_back (data);
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}
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// offset is where to jump to if the block fails
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bool Interpreter::startBlock (int offset)
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{
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if (mInBlock) return (false); // can't nest blocks
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mBlockSuccess = true;
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mInBlock = true;
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mBlockJump = offset + mInstructionPointer;
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return (true);
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}
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bool Interpreter::endBlock ()
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{
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if (!mInBlock) return (false);
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mInBlock = false;
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mBlockJump = 0;
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pushStack (Data::pointer (new BoolData (mBlockSuccess)));
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return (true);
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}
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TER Interpreter::interpret (Contract* contract, const SerializedTransaction& txn, Blob& code)
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{
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mContract = contract;
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mCode = &code;
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mTotalFee = 0;
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mInstructionPointer = 0;
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while (mInstructionPointer < code.size ())
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{
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unsigned int fun = (*mCode)[mInstructionPointer];
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mInstructionPointer++;
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if (fun >= mFunctionTable.size ())
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{
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// TODO: log
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return (temMALFORMED); // TODO: is this actually what we want to do?
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}
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mTotalFee += mFunctionTable[ fun ]->getFee (); // FIXME: You can't use fees this way, there's no consensus
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if (mTotalFee > txn.getTransactionFee ().getNValue ())
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{
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// TODO: log
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return (telINSUF_FEE_P);
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}
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else
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{
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if (!mFunctionTable[ fun ]->work (this))
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{
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// TODO: log
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return (temMALFORMED); // TODO: is this actually what we want to do?
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}
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}
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}
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return (tesSUCCESS);
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}
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Data::pointer Interpreter::getIntData ()
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{
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int value = 0; // TODO
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mInstructionPointer += 4;
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return (Data::pointer (new IntData (value)));
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}
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Data::pointer Interpreter::getFloatData ()
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{
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float value = 0; // TODO
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mInstructionPointer += 4;
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return (Data::pointer (new FloatData (value)));
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}
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Data::pointer Interpreter::getUint160Data ()
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{
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uint160 value; // TODO
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mInstructionPointer += 20;
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return (Data::pointer (new Uint160Data (value)));
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}
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bool Interpreter::jumpTo (int offset)
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{
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if (offset < 0)
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{
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if (-offset > mInstructionPointer)
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return false;
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}
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else
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{
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if (offset > mCode->size () ||
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mInstructionPointer > mCode->size () - offset)
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return false;
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}
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mInstructionPointer += offset;
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return (true);
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}
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void Interpreter::stop ()
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{
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mInstructionPointer = mCode->size ();
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}
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Data::pointer Interpreter::getContractData (int index)
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{
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return (Data::pointer (new ErrorData ()));
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}
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bool Interpreter::canSign (const uint160& signer)
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{
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return (true);
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}
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}
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} // ripple
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