// Copyright (C) 2005 Google Inc.
//
// 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.google.caja.parser.js;
import com.google.caja.lexer.FilePosition;
import com.google.caja.lexer.TokenConsumer;
import com.google.caja.parser.ParseTreeNode;
import com.google.caja.reporting.RenderContext;
import com.google.javascript.jscomp.jsonml.JsonML;
import com.google.javascript.jscomp.jsonml.TagType;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
/**
*
* @author mikesamuel@gmail.com
*/
public final class SwitchStmt extends LabeledStatement {
private static final long serialVersionUID = -7284973291082281855L;
@ReflectiveCtor
public SwitchStmt(
FilePosition pos, String label, List<? extends ParseTreeNode> children) {
super(pos, label, ParseTreeNode.class);
createMutation().appendChildren(children).execute();
}
public SwitchStmt(
FilePosition pos, String label,
Expression valueExpr, List<SwitchCase> cases) {
super(pos, label, ParseTreeNode.class);
createMutation().appendChild(valueExpr).appendChildren(cases).execute();
}
@Override
protected void childrenChanged() {
super.childrenChanged();
List<? extends ParseTreeNode> children = children();
ParseTreeNode valueExpr = children.get(0);
if (!(valueExpr instanceof Expression)) {
throw new ClassCastException(
"Expected " + Expression.class.getName() + " not "
+ valueExpr.getClass().getName());
}
for (ParseTreeNode node : children.subList(1, children.size())) {
if (!(node instanceof SwitchCase)) {
throw new ClassCastException(
"Expected " + SwitchCase.class.getName() + " not "
+ (node != null ? node.getClass().getName() : "<null>"));
}
}
}
@Override
public void continues(Map<String, List<ContinueStmt>> contsReaching) {
// switch statements don't intercept continues
for (ParseTreeNode child : children()) {
if (child instanceof Statement) {
((Statement) child).continues(contsReaching);
}
}
}
@Override
public boolean isTargetForContinue() { return false; }
public void render(RenderContext rc) {
TokenConsumer out = rc.getOut();
out.mark(getFilePosition());
String label = getRenderedLabel(rc);
if (null != label) {
out.consume(label);
out.consume(":");
}
Iterator<? extends ParseTreeNode> it = children().iterator();
out.consume("switch");
out.consume("(");
it.next().render(rc);
out.consume(")");
out.consume("{");
while (it.hasNext()) {
SwitchCase caseStmt = (SwitchCase) it.next();
caseStmt.render(rc);
}
out.mark(FilePosition.endOfOrNull(getFilePosition()));
out.consume("}");
}
@Override
public boolean isTerminal() {
return true;
}
public boolean hasHangingConditional() { return false; }
@SuppressWarnings("unchecked")
public JsonML toJsonML() {
return wrapIfLabelled(
JsonMLBuilder.builder(TagType.SwitchStmt, getFilePosition())
.addChildren((List<? extends JsonMLCompatible>) children())
.build());
}
}