58 lines
1.8 KiB
Java
58 lines
1.8 KiB
Java
/**
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* Copyright (c) 2011-2017, James Zhan 詹波 (jfinal@126.com).
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.jfinal.template.stat.ast;
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import com.jfinal.template.Env;
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import com.jfinal.template.TemplateException;
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import com.jfinal.template.expr.ast.ExprList;
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import com.jfinal.template.io.Writer;
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import com.jfinal.template.stat.Scope;
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/**
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* Call 调用模板函数，两种用法：
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* 1：常规调用
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* #@funcName(p1, p2, ..., pn)
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* 2：安全调用，函数被定义才调用，否则跳过
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* #@funcName?(p1, p2, ..., pn)
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*
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* 注意：在函数名前面引入 '@' 字符是为了区分模板函数和指令
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*/
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public class Call extends Stat {
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private String funcName;
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private ExprList exprList;
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private boolean callIfDefined;
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public Call(String funcName, ExprList exprList, boolean callIfDefined) {
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this.funcName = funcName;
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this.exprList = exprList;
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this.callIfDefined = callIfDefined;
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}
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public void exec(Env env, Scope scope, Writer writer) {
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Define function = env.getFunction(funcName);
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if (function != null) {
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function.call(env, scope, exprList, writer);
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} else if (callIfDefined) {
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return ;
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} else {
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throw new TemplateException("Template function not defined: " + funcName, location);
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}
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}
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}
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