| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 freemarker.core; |
| |
| import java.io.IOException; |
| |
| import freemarker.core.Expression.ReplacemenetState; |
| import freemarker.template.TemplateException; |
| |
| /** |
| * Representation of the compile-time #escape directive. |
| */ |
| class EscapeBlock extends TemplateElement { |
| |
| private final String variable; |
| private final Expression expr; |
| private Expression escapedExpr; |
| |
| |
| EscapeBlock(String variable, Expression expr, Expression escapedExpr) { |
| this.variable = variable; |
| this.expr = expr; |
| this.escapedExpr = escapedExpr; |
| } |
| |
| void setContent(TemplateElements children) { |
| setChildren(children); |
| // We don't need it anymore at this point |
| this.escapedExpr = null; |
| } |
| |
| @Override |
| TemplateElement[] accept(Environment env) throws TemplateException, IOException { |
| return getChildBuffer(); |
| } |
| |
| Expression doEscape(Expression expression) { |
| return escapedExpr.deepCloneWithIdentifierReplaced(variable, expression, new ReplacemenetState()); |
| } |
| |
| @Override |
| protected String dump(boolean canonical) { |
| StringBuilder sb = new StringBuilder(); |
| if (canonical) sb.append('<'); |
| sb.append(getNodeTypeSymbol()) |
| .append(' ').append(_CoreStringUtils.toFTLTopLevelIdentifierReference(variable)) |
| .append(" as ").append(expr.getCanonicalForm()); |
| if (canonical) { |
| sb.append('>'); |
| sb.append(getChildrenCanonicalForm()); |
| sb.append("</").append(getNodeTypeSymbol()).append('>'); |
| } |
| return sb.toString(); |
| } |
| |
| @Override |
| String getNodeTypeSymbol() { |
| return "#escape"; |
| } |
| |
| @Override |
| int getParameterCount() { |
| return 2; |
| } |
| |
| @Override |
| Object getParameterValue(int idx) { |
| switch (idx) { |
| case 0: return variable; |
| case 1: return expr; |
| default: throw new IndexOutOfBoundsException(); |
| } |
| } |
| |
| @Override |
| ParameterRole getParameterRole(int idx) { |
| switch (idx) { |
| case 0: return ParameterRole.PLACEHOLDER_VARIABLE; |
| case 1: return ParameterRole.EXPRESSION_TEMPLATE; |
| default: throw new IndexOutOfBoundsException(); |
| } |
| } |
| |
| @Override |
| boolean isOutputCacheable() { |
| return true; |
| } |
| |
| @Override |
| boolean isNestedBlockRepeater() { |
| return false; |
| } |
| |
| } |