equalityoperandnode.java

是有关解释器的.用JAVA编写.可以解释一般的JAVA程序.

class EqualityOperandNode extends EvaluatableNode
{
	EvaluatableNode vEqualityOperandNode;
	
	static EqualityOperandNode parserEqualityOperand(Environment env, Scanner s) throws ParserException, ScannerException
	{
		EvaluatableNode tmpEqualityOperandNode;
		
		if(DirectionNode.mIsDirection(s))
			tmpEqualityOperandNode= DirectionNode.parserDirection(env,s);
		else
			tmpEqualityOperandNode= ComplexEqualityOperandNode.parserComplexEqualityOperand(env,s);		
		
		return new EqualityOperandNode(tmpEqualityOperandNode);
	}

	EqualityOperandNode()
	{		
		vEqualityOperandNode= null;
	}
	EqualityOperandNode(EvaluatableNode aEqualityOperandNode)
	{	
		vEqualityOperandNode= aEqualityOperandNode;
	}
	String format(int indent)
	{		
		return vEqualityOperandNode.format(indent);
	}
	Value evaluate(Environment env) throws InterpreterException
	{		
		return vEqualityOperandNode.evaluate(env);
	}
	boolean typeCheck(Environment env) throws InterpreterException
	{		
		return vEqualityOperandNode.typeCheck(env);		
	}
}