freemarker.core.Case Maven / Gradle / Ivy
/*
* 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;
/**
* Represents a case in a switch statement.
*/
final class Case extends TemplateElement {
static final int TYPE_CASE = 0;
static final int TYPE_DEFAULT = 1;
Expression condition;
Case(Expression matchingValue, TemplateElements children) {
this.condition = matchingValue;
setChildren(children);
}
@Override
TemplateElement[] accept(Environment env) {
return getChildBuffer();
}
@Override
protected String dump(boolean canonical) {
StringBuilder sb = new StringBuilder();
if (canonical) sb.append('<');
sb.append(getNodeTypeSymbol());
if (condition != null) {
sb.append(' ');
sb.append(condition.getCanonicalForm());
}
if (canonical) {
sb.append('>');
sb.append(getChildrenCanonicalForm());
}
return sb.toString();
}
@Override
String getNodeTypeSymbol() {
return condition != null ? "#case" : "#default";
}
@Override
int getParameterCount() {
return 2;
}
@Override
Object getParameterValue(int idx) {
switch (idx) {
case 0: return condition;
case 1: return Integer.valueOf(condition != null ? TYPE_CASE : TYPE_DEFAULT);
default: throw new IndexOutOfBoundsException();
}
}
@Override
ParameterRole getParameterRole(int idx) {
switch (idx) {
case 0: return ParameterRole.CONDITION;
case 1: return ParameterRole.AST_NODE_SUBTYPE;
default: throw new IndexOutOfBoundsException();
}
}
@Override
boolean isNestedBlockRepeater() {
return false;
}
}