net.jangaroo.jooc.ast.Catch Maven / Gradle / Ivy
/*
* Copyright 2008 CoreMedia AG
*
* 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 net.jangaroo.jooc.ast;
import net.jangaroo.jooc.JooSymbol;
import net.jangaroo.jooc.Scope;
import net.jangaroo.jooc.sym;
import java.io.IOException;
import java.util.List;
/**
* @author Andreas Gawecki
* @author Frank Wienberg
*/
public class Catch extends KeywordStatement {
private JooSymbol lParen;
private Parameter param;
private JooSymbol rParen;
private BlockStatement block;
private TryStatement parentNode;
private Scope scope;
public Catch(JooSymbol symCatch, JooSymbol lParen, Parameter param, JooSymbol rParen, BlockStatement block) {
super(symCatch);
this.lParen = lParen;
this.param = param;
this.rParen = rParen;
this.block = block;
}
@Override
public List getChildren() {
return makeChildren(super.getChildren(), param, block);
}
@Override
public void visit(AstVisitor visitor) throws IOException {
visitor.visitCatch(this);
}
public TryStatement getParentTryStatement() {
return parentNode;
}
public JooSymbol getLParen() {
return lParen;
}
public Parameter getParam() {
return param;
}
public JooSymbol getRParen() {
return rParen;
}
public BlockStatement getBlock() {
return block;
}
public boolean hasCondition() {
TypeRelation typeRelation = param.getOptTypeRelation();
return typeRelation != null && typeRelation.getType().getSymbol().sym != sym.MUL;
}
@Override
public void scope(final Scope scope) {
this.scope = scope;
withNewDeclarationScope(this, scope, new Scoped() {
@Override
public void run(final Scope scope) {
param.scope(scope);
block.scope(scope);
}
});
}
public void analyze(AstNode parentNode) {
super.analyze(parentNode);
if (!(parentNode instanceof TryStatement)) {
throw new IllegalArgumentException("the parent node of a catch block must be a try statement, but is " + parentNode);
}
this.parentNode = (TryStatement) parentNode;
param.analyze(this);
TypeRelation typeRelation = param.getOptTypeRelation();
if (typeRelation != null) {
Type type = typeRelation.getType();
type.getIde().addExternalUsage(false);
}
if (hasCondition()) {
scope.getCompilationUnit().addBuiltInIdentifierUsage("is");
}
block.analyze(this);
}
}