| /* |
| * 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.template.TemplateException; |
| |
| /** |
| * An instruction that does multiple assignments, like [#local x=1 x=2]. |
| * Each assignment is represented by a {@link Assignment} child element. |
| * If there's only one assignment, its usually just a {@link Assignment} without parent {@link AssignmentInstruction}. |
| */ |
| final class AssignmentInstruction extends TemplateElement { |
| |
| private int scope; |
| private Expression namespaceExp; |
| |
| AssignmentInstruction(int scope) { |
| this.scope = scope; |
| setChildBufferCapacity(1); |
| } |
| |
| void addAssignment(Assignment assignment) { |
| addChild(assignment); |
| } |
| |
| void setNamespaceExp(Expression namespaceExp) { |
| this.namespaceExp = namespaceExp; |
| int ln = getChildCount(); |
| for (int i = 0; i < ln; i++) { |
| ((Assignment) getChild(i)).setNamespaceExp(namespaceExp); |
| } |
| } |
| |
| @Override |
| TemplateElement[] accept(Environment env) throws TemplateException, IOException { |
| return getChildBuffer(); |
| } |
| |
| @Override |
| protected String dump(boolean canonical) { |
| StringBuilder buf = new StringBuilder(); |
| if (canonical) buf.append('<'); |
| buf.append(Assignment.getDirectiveName(scope)); |
| if (canonical) { |
| buf.append(' '); |
| int ln = getChildCount(); |
| for (int i = 0; i < ln; i++) { |
| if (i != 0) { |
| buf.append(", "); |
| } |
| Assignment assignment = (Assignment) getChild(i); |
| buf.append(assignment.getCanonicalForm()); |
| } |
| } else { |
| buf.append("-container"); |
| } |
| if (namespaceExp != null) { |
| buf.append(" in "); |
| buf.append(namespaceExp.getCanonicalForm()); |
| } |
| if (canonical) buf.append(">"); |
| return buf.toString(); |
| } |
| |
| @Override |
| int getParameterCount() { |
| return 2; |
| } |
| |
| @Override |
| Object getParameterValue(int idx) { |
| switch (idx) { |
| case 0: return Integer.valueOf(scope); |
| case 1: return namespaceExp; |
| default: return null; |
| } |
| } |
| |
| @Override |
| ParameterRole getParameterRole(int idx) { |
| switch (idx) { |
| case 0: return ParameterRole.VARIABLE_SCOPE; |
| case 1: return ParameterRole.NAMESPACE; |
| default: return null; |
| } |
| } |
| |
| @Override |
| String getNodeTypeSymbol() { |
| return Assignment.getDirectiveName(scope); |
| } |
| |
| @Override |
| boolean isNestedBlockRepeater() { |
| return false; |
| } |
| |
| } |