import org.nfunk.jep.ASTVarNode; //导入依赖的package包/类
public void set(EvaluatorI pv, Node node, Object value) throws ParseException {
	Node lhsNode = node.jjtGetChild(0);

	if (!(lhsNode instanceof ASTVarNode))
		throw new ParseException("Ele: lhs must be a variable");
	ASTVarNode vn = (ASTVarNode) lhsNode;
	Variable var = vn.getVar();
	Object rhs = pv.eval(node.jjtGetChild(1));
	int index = -1;
	if (rhs instanceof Number) {
		index = ((Number) rhs).intValue() - 1;
	} else if (rhs instanceof Vector) {
		Vector vec = (Vector) rhs;
		if (vec.size() != 1)
			throw new ParseException("Ele: only single dimension arrays supported in JEP");
		index = ((Number) vec.firstElement()).intValue() - 1;
	} else
		throw new ParseException("Ele: rhs must be a number");
	Object oldVarVal = var.getValue();
	if (!(oldVarVal instanceof Vector))
		throw new ParseException("Ele: the value of the variable must be a Vector");
	Vector newVarVal = (Vector) ((Vector) oldVarVal).clone();
	newVarVal.set(index, value);
	var.setValue(newVarVal);
}
 

import org.nfunk.jep.ASTVarNode; //导入依赖的package包/类
public void set(EvaluatorI pv, Node node, Object value)
		throws ParseException {
	Node lhsNode = node.jjtGetChild(0);

	if(!(lhsNode instanceof ASTVarNode))
		throw new ParseException("Ele: lhs must be a variable");
	ASTVarNode vn = (ASTVarNode) lhsNode;
	Variable var = pv.getSymbolTable().getVar(vn.getVarName());
	Object rhs = pv.eval(node.jjtGetChild(1));
	int index=-1;
	if(rhs instanceof Number)
	{
		index=((Number) rhs).intValue()-1;
	}
	else if(rhs instanceof Vector)
	{
		Vector vec = (Vector) rhs;
		if(vec.size()!=1) throw new ParseException("Ele: only single dimension arrays supported in JEP");
		index = ((Number) vec.firstElement()).intValue()-1;
	}
	else throw new ParseException("Ele: rhs must be a number");
	Object oldVarVal = var.getValue();
	if(!(oldVarVal instanceof Vector))
		throw new ParseException("Ele: the value of the variable must be a Vector");
	Vector newVarVal = (Vector) ((Vector) oldVarVal).clone();
	newVarVal.set(index,value);
	var.setValue(newVarVal);
}
 

import org.nfunk.jep.ASTVarNode; //导入依赖的package包/类
public void set(EvaluatorI pv, Node node, Object value)
		throws ParseException {
	Node lhsNode = node.jjtGetChild(0);

	if(!(lhsNode instanceof ASTVarNode))
		throw new ParseException("Ele: lhs must be a variable");
	ASTVarNode vn = (ASTVarNode) lhsNode;
	Variable var = vn.getVar();
	Object rhs = pv.eval(node.jjtGetChild(1));
	int index=-1;
	if(rhs instanceof Number)
	{
		index=((Number) rhs).intValue()-1;
	}
	else if(rhs instanceof Vector)
	{
		Vector vec = (Vector) rhs;
		if(vec.size()!=1) throw new ParseException("Ele: only single dimension arrays supported in JEP");
		index = ((Number) vec.firstElement()).intValue()-1;
	}
	else throw new ParseException("Ele: rhs must be a number");
	Object oldVarVal = var.getValue();
	if(!(oldVarVal instanceof Vector))
		throw new ParseException("Ele: the value of the variable must be a Vector");
	Vector newVarVal = (Vector) ((Vector) oldVarVal).clone();
	newVarVal.set(index,value);
	var.setValue(newVarVal);
}