xahaud/src/Operation.h

#include "Interpreter.h"

namespace Script {

// Contracts are non typed  have variable data types


class Operation
{
public:
	// returns false if there was an error
	virtual bool work(Interpreter* interpreter)=0;

	virtual int getFee();

	virtual ~Operation() { ; }
};

// this is just an Int in the code
class IntOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer data=interpreter->getIntData();
		if(data->isInt32()) 
		{ 
			interpreter->pushStack( data );
			return(true);
		}
		return(false);
	}
};

class FloatOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer data=interpreter->getFloatData();
		if(data->isFloat()) 
		{ 
			interpreter->pushStack( data );
			return(true);
		}
		return(false);
	}
};

class Uint160Op : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer data=interpreter->getUint160Data();
		if(data->isUint160()) 
		{ 
			interpreter->pushStack( data );
			return(true);
		}
		return(false);
	}
};

class AddOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer data1=interpreter->popStack();
		Data::pointer data2=interpreter->popStack();
		if( (data1->isInt32() || data1->isFloat()) &&
			(data2->isInt32() || data2->isFloat()) )
		{
			if(data1->isFloat() || data2->isFloat()) interpreter->pushStack(Data::pointer(new FloatData(data1->getFloat()+data2->getFloat())));
			else interpreter->pushStack(Data::pointer(new IntData(data1->getInt()+data2->getInt())));
			return(true);
		}else
		{
			return(false);
		}	
	}
};

class SubOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer data1=interpreter->popStack();
		Data::pointer data2=interpreter->popStack();
		if( (data1->isInt32() || data1->isFloat()) &&
			(data2->isInt32() || data2->isFloat()) )
		{
			if(data1->isFloat() || data2->isFloat()) interpreter->pushStack(Data::pointer(new FloatData(data1->getFloat()-data2->getFloat())));
			else interpreter->pushStack(Data::pointer(new IntData(data1->getInt()-data2->getInt())));
			return(true);
		}else
		{
			return(false);
		}	
	}
};


class StartBlockOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer offset=interpreter->getIntData();
		return(interpreter->startBlock(offset->getInt()));
	}
};

class EndBlockOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		return(interpreter->endBlock());
	}
};

class StopOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		interpreter->stop();
		return(true);
	}
};

class AcceptDataOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer data=interpreter->popStack();
		if(data->isInt32())
		{
			interpreter->pushStack( interpreter->getAcceptData(data->getInt()) );
			return(true);
		}
		return(false);
	}
};

class JumpIfOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer offset=interpreter->getIntData();
		Data::pointer cond=interpreter->popStack();
		if(cond->isBool() && offset->isInt32())
		{
			if(cond->isTrue())
			{
				return(interpreter->jumpTo(offset->getInt()));
			}
			return(true);
		}
		return(false);
	}
};

class JumpOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer offset=interpreter->getIntData();
		if(offset->isInt32())
		{
			return(interpreter->jumpTo(offset->getInt()));
		}
		return(false);
	}
};

class SendXNSOp  : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer sourceID=interpreter->popStack();
		Data::pointer destID=interpreter->popStack();
		Data::pointer amount=interpreter->popStack();
		if(sourceID->isUint160() && destID->isUint160() && amount->isInt32() && interpreter->canSign(sourceID->getUint160()))
		{
			// make sure:
			// source is either, this contract, issuer, or acceptor

			// TODO do the send
			//interpreter->pushStack( send result);

			return(true);
		}

		return(false);
	}
};

class GetDataOp : public Operation
{
public:
	bool work(Interpreter* interpreter)
	{
		Data::pointer index=interpreter->popStack();
		if(index->isInt32()) 
		{
			interpreter->pushStack( interpreter->getContractData(index->getInt()));
			return(true);
		}

		return(false);
	}
};

}