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/*******************************************************************************
* Copyright (c) 2000, 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.parser;
/**
* Internal local variable structure for parsing recovery
*/
import java.util.HashSet;
import java.util.Set;
import org.eclipse.jdt.internal.compiler.ast.Annotation;
import org.eclipse.jdt.internal.compiler.ast.ArrayQualifiedTypeReference;
import org.eclipse.jdt.internal.compiler.ast.ArrayTypeReference;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.Expression;
import org.eclipse.jdt.internal.compiler.ast.LocalDeclaration;
import org.eclipse.jdt.internal.compiler.ast.Statement;
@SuppressWarnings("rawtypes")
public class RecoveredLocalVariable extends RecoveredStatement {
public RecoveredAnnotation[] annotations;
public int annotationCount;
public int modifiers;
public int modifiersStart;
public LocalDeclaration localDeclaration;
public boolean alreadyCompletedLocalInitialization;
public RecoveredLocalVariable(LocalDeclaration localDeclaration, RecoveredElement parent, int bracketBalance){
super(localDeclaration, parent, bracketBalance);
this.localDeclaration = localDeclaration;
this.alreadyCompletedLocalInitialization = localDeclaration.initialization != null;
}
/*
* Record an expression statement if local variable is expecting an initialization expression.
*/
public RecoveredElement add(Statement stmt, int bracketBalanceValue) {
if (this.alreadyCompletedLocalInitialization || !(stmt instanceof Expression)) {
return super.add(stmt, bracketBalanceValue);
} else {
this.alreadyCompletedLocalInitialization = true;
this.localDeclaration.initialization = (Expression)stmt;
this.localDeclaration.declarationSourceEnd = stmt.sourceEnd;
this.localDeclaration.declarationEnd = stmt.sourceEnd;
return this;
}
}
public void attach(RecoveredAnnotation[] annots, int annotCount, int mods, int modsSourceStart) {
if (annotCount > 0) {
Annotation[] existingAnnotations = this.localDeclaration.annotations;
if (existingAnnotations != null) {
this.annotations = new RecoveredAnnotation[annotCount];
this.annotationCount = 0;
next : for (int i = 0; i < annotCount; i++) {
for (int j = 0; j < existingAnnotations.length; j++) {
if (annots[i].annotation == existingAnnotations[j]) continue next;
}
this.annotations[this.annotationCount++] = annots[i];
}
} else {
this.annotations = annots;
this.annotationCount = annotCount;
}
}
if (mods != 0) {
this.modifiers = mods;
this.modifiersStart = modsSourceStart;
}
}
/*
* Answer the associated parsed structure
*/
public ASTNode parseTree(){
return this.localDeclaration;
}
/*
* Answer the very source end of the corresponding parse node
*/
public int sourceEnd(){
return this.localDeclaration.declarationSourceEnd;
}
public String toString(int tab) {
return tabString(tab) + "Recovered local variable:\n" + this.localDeclaration.print(tab + 1, new StringBuffer(10)); //$NON-NLS-1$
}
public Statement updatedStatement(int depth, Set knownTypes){
/* update annotations */
if (this.modifiers != 0) {
this.localDeclaration.modifiers |= this.modifiers;
if (this.modifiersStart < this.localDeclaration.declarationSourceStart) {
this.localDeclaration.declarationSourceStart = this.modifiersStart;
}
}
/* update annotations */
if (this.annotationCount > 0){
int existingCount = this.localDeclaration.annotations == null ? 0 : this.localDeclaration.annotations.length;
Annotation[] annotationReferences = new Annotation[existingCount + this.annotationCount];
if (existingCount > 0){
System.arraycopy(this.localDeclaration.annotations, 0, annotationReferences, this.annotationCount, existingCount);
}
for (int i = 0; i < this.annotationCount; i++){
annotationReferences[i] = this.annotations[i].updatedAnnotationReference();
}
this.localDeclaration.annotations = annotationReferences;
int start = this.annotations[0].annotation.sourceStart;
if (start < this.localDeclaration.declarationSourceStart) {
this.localDeclaration.declarationSourceStart = start;
}
}
return this.localDeclaration;
}
/*
* A closing brace got consumed, might have closed the current element,
* in which case both the currentElement is exited.
*
* Fields have no associated braces, thus if matches, then update parent.
*/
public RecoveredElement updateOnClosingBrace(int braceStart, int braceEnd){
if (this.bracketBalance > 0){ // was an array initializer
this.bracketBalance--;
if (this.bracketBalance == 0) this.alreadyCompletedLocalInitialization = true;
return this;
}
if (this.parent != null){
return this.parent.updateOnClosingBrace(braceStart, braceEnd);
}
return this;
}
/*
* An opening brace got consumed, might be the expected opening one of the current element,
* in which case the bodyStart is updated.
*/
public RecoveredElement updateOnOpeningBrace(int braceStart, int braceEnd){
if (this.localDeclaration.declarationSourceEnd == 0
&& (this.localDeclaration.type instanceof ArrayTypeReference || this.localDeclaration.type instanceof ArrayQualifiedTypeReference)
&& !this.alreadyCompletedLocalInitialization){
this.bracketBalance++;
return null; // no update is necessary (array initializer)
}
// might be an array initializer
this.updateSourceEndIfNecessary(braceStart - 1, braceEnd - 1);
return this.parent.updateOnOpeningBrace(braceStart, braceEnd);
}
public void updateParseTree(){
updatedStatement(0, new HashSet());
}
/*
* Update the declarationSourceEnd of the corresponding parse node
*/
public void updateSourceEndIfNecessary(int bodyStart, int bodyEnd){
if (this.localDeclaration.declarationSourceEnd == 0) {
this.localDeclaration.declarationSourceEnd = bodyEnd;
this.localDeclaration.declarationEnd = bodyEnd;
}
}
}
