primitivemessagenode.java

是有关解释器的.用JAVA编写.可以解释一般的JAVA程序.

class PrimitiveMessageNode extends EvaluatableNode
{
	PrimitiveSelectorNode vPrimitiveSelectorNode;
	
	static PrimitiveMessageNode parsePrimitiveMessage(Environment env, Scanner s)throws ParserException, ScannerException
	{
		PrimitiveSelectorNode tmpPrimitiveSelectorNode;
		
		tmpPrimitiveSelectorNode= PrimitiveSelectorNode.parserPrimitiveSelector(env,s);
		matchBracket(s,'(');
		matchBracket(s,')');
		
		return new PrimitiveMessageNode(tmpPrimitiveSelectorNode);
	}
	static boolean mIsPrimitiveMessage(Scanner s) throws ScannerException
	{
		return PrimitiveSelectorNode.mIsPrimitiveSelector(s);
	}
	PrimitiveMessageNode(PrimitiveSelectorNode aPrimitiveSelectorNode)
	{
		vPrimitiveSelectorNode= aPrimitiveSelectorNode;
	}
	PrimitiveMessageNode()
	{
		vPrimitiveSelectorNode= null;
	}
	String format(int indent)
	{
		return vPrimitiveSelectorNode.format(indent)+"()";
	}
	Value evaluate(Environment env) throws InterpreterException
	{
		return vPrimitiveSelectorNode.evaluate(env);
	}
}