com.jfinal.template.stat.ast.ElseIf Maven / Gradle / Ivy
/**
* Copyright (c) 2011-2023, James Zhan 詹波 ([email protected]).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jfinal.template.stat.ast;
import com.jfinal.template.Env;
import com.jfinal.template.expr.ast.Expr;
import com.jfinal.template.expr.ast.ExprList;
import com.jfinal.template.expr.ast.Logic;
import com.jfinal.template.io.Writer;
import com.jfinal.template.stat.Location;
import com.jfinal.template.stat.ParseException;
import com.jfinal.template.stat.Scope;
/**
* ElseIf
*/
public class ElseIf extends Stat {
private Expr cond;
private Stat stat;
private Stat elseIfOrElse;
public ElseIf(ExprList cond, StatList statList, Location location) {
if (cond.length() == 0) {
throw new ParseException("The condition expression of #else if statement can not be blank", location);
}
this.cond = cond.getActualExpr();
this.stat = statList.getActualStat();
}
/**
* take over setStat(...) method of super class
*/
public void setStat(Stat elseIfOrElse) {
this.elseIfOrElse = elseIfOrElse;
}
public void exec(Env env, Scope scope, Writer writer) {
if (Logic.isTrue(cond.eval(scope))) {
stat.exec(env, scope, writer);
} else if (elseIfOrElse != null) {
elseIfOrElse.exec(env, scope, writer);
}
}
}