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/*******************************************************************************
* Copyright (c) 2000, 2009 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 field structure for parsing recovery
*/
import java.util.HashSet;
import java.util.Set;
import org.eclipse.jdt.internal.compiler.ast.AbstractVariableDeclaration;
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.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.Statement;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
public class RecoveredField extends RecoveredElement {
public FieldDeclaration fieldDeclaration;
boolean alreadyCompletedFieldInitialization;
public RecoveredAnnotation[] annotations;
public int annotationCount;
public int modifiers;
public int modifiersStart;
public RecoveredType[] anonymousTypes;
public int anonymousTypeCount;
public RecoveredField(FieldDeclaration fieldDeclaration, RecoveredElement parent, int bracketBalance){
this(fieldDeclaration, parent, bracketBalance, null);
}
public RecoveredField(FieldDeclaration fieldDeclaration, RecoveredElement parent, int bracketBalance, Parser parser){
super(parent, bracketBalance, parser);
this.fieldDeclaration = fieldDeclaration;
this.alreadyCompletedFieldInitialization = fieldDeclaration.initialization != null;
}
/*
* Record a field declaration
*/
public RecoveredElement add(FieldDeclaration addedfieldDeclaration, int bracketBalanceValue) {
/* default behavior is to delegate recording to parent if any */
resetPendingModifiers();
if (this.parent == null) return this; // ignore
if (this.fieldDeclaration.declarationSourceStart == addedfieldDeclaration.declarationSourceStart) {
if (this.fieldDeclaration.initialization != null) {
this.updateSourceEndIfNecessary(this.fieldDeclaration.initialization.sourceEnd);
} else {
this.updateSourceEndIfNecessary(this.fieldDeclaration.sourceEnd);
}
} else {
this.updateSourceEndIfNecessary(previousAvailableLineEnd(addedfieldDeclaration.declarationSourceStart - 1));
}
return this.parent.add(addedfieldDeclaration, bracketBalanceValue);
}
/*
* Record an expression statement if field is expecting an initialization expression,
* used for completion inside field initializers.
*/
public RecoveredElement add(Statement statement, int bracketBalanceValue) {
if (this.alreadyCompletedFieldInitialization || !(statement instanceof Expression)) {
return super.add(statement, bracketBalanceValue);
} else {
this.alreadyCompletedFieldInitialization = true;
this.fieldDeclaration.initialization = (Expression)statement;
this.fieldDeclaration.declarationSourceEnd = statement.sourceEnd;
this.fieldDeclaration.declarationEnd = statement.sourceEnd;
return this;
}
}
/*
* Record a type declaration if this field is expecting an initialization expression
* and the type is an anonymous type.
* Used for completion inside field initializers.
*/
public RecoveredElement add(TypeDeclaration typeDeclaration, int bracketBalanceValue) {
if (this.alreadyCompletedFieldInitialization
|| ((typeDeclaration.bits & ASTNode.IsAnonymousType) == 0)
|| (this.fieldDeclaration.declarationSourceEnd != 0 && typeDeclaration.sourceStart > this.fieldDeclaration.declarationSourceEnd)) {
return super.add(typeDeclaration, bracketBalanceValue);
} else {
// Prepare anonymous type list
if (this.anonymousTypes == null) {
this.anonymousTypes = new RecoveredType[5];
this.anonymousTypeCount = 0;
} else {
if (this.anonymousTypeCount == this.anonymousTypes.length) {
System.arraycopy(
this.anonymousTypes,
0,
(this.anonymousTypes = new RecoveredType[2 * this.anonymousTypeCount]),
0,
this.anonymousTypeCount);
}
}
// Store type declaration as an anonymous type
RecoveredType element = new RecoveredType(typeDeclaration, this, bracketBalanceValue);
this.anonymousTypes[this.anonymousTypeCount++] = element;
return element;
}
}
public void attach(RecoveredAnnotation[] annots, int annotCount, int mods, int modsSourceStart) {
if (annotCount > 0) {
Annotation[] existingAnnotations = this.fieldDeclaration.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.fieldDeclaration;
}
/*
* Answer the very source end of the corresponding parse node
*/
public int sourceEnd(){
return this.fieldDeclaration.declarationSourceEnd;
}
public String toString(int tab){
StringBuffer buffer = new StringBuffer(tabString(tab));
buffer.append("Recovered field:\n"); //$NON-NLS-1$
this.fieldDeclaration.print(tab + 1, buffer);
if (this.annotations != null) {
for (int i = 0; i < this.annotationCount; i++) {
buffer.append("\n"); //$NON-NLS-1$
buffer.append(this.annotations[i].toString(tab + 1));
}
}
if (this.anonymousTypes != null) {
for (int i = 0; i < this.anonymousTypeCount; i++){
buffer.append("\n"); //$NON-NLS-1$
buffer.append(this.anonymousTypes[i].toString(tab + 1));
}
}
return buffer.toString();
}
public FieldDeclaration updatedFieldDeclaration(int depth, Set knownTypes){
/* update annotations */
if (this.modifiers != 0) {
this.fieldDeclaration.modifiers |= this.modifiers;
if (this.modifiersStart < this.fieldDeclaration.declarationSourceStart) {
this.fieldDeclaration.declarationSourceStart = this.modifiersStart;
}
}
/* update annotations */
if (this.annotationCount > 0){
int existingCount = this.fieldDeclaration.annotations == null ? 0 : this.fieldDeclaration.annotations.length;
Annotation[] annotationReferences = new Annotation[existingCount + this.annotationCount];
if (existingCount > 0){
System.arraycopy(this.fieldDeclaration.annotations, 0, annotationReferences, this.annotationCount, existingCount);
}
for (int i = 0; i < this.annotationCount; i++){
annotationReferences[i] = this.annotations[i].updatedAnnotationReference();
}
this.fieldDeclaration.annotations = annotationReferences;
int start = this.annotations[0].annotation.sourceStart;
if (start < this.fieldDeclaration.declarationSourceStart) {
this.fieldDeclaration.declarationSourceStart = start;
}
}
if (this.anonymousTypes != null) {
if(this.fieldDeclaration.initialization == null) {
for (int i = 0; i < this.anonymousTypeCount; i++){
RecoveredType recoveredType = this.anonymousTypes[i];
TypeDeclaration typeDeclaration = recoveredType.typeDeclaration;
if(typeDeclaration.declarationSourceEnd == 0) {
typeDeclaration.declarationSourceEnd = this.fieldDeclaration.declarationSourceEnd;
typeDeclaration.bodyEnd = this.fieldDeclaration.declarationSourceEnd;
}
if (recoveredType.preserveContent){
TypeDeclaration anonymousType = recoveredType.updatedTypeDeclaration(depth + 1, knownTypes);
if (anonymousType != null) {
this.fieldDeclaration.initialization = anonymousType.allocation;
if(this.fieldDeclaration.declarationSourceEnd == 0) {
int end = anonymousType.declarationSourceEnd;
this.fieldDeclaration.declarationSourceEnd = end;
this.fieldDeclaration.declarationEnd = end;
}
}
}
}
if (this.anonymousTypeCount > 0) this.fieldDeclaration.bits |= ASTNode.HasLocalType;
} else if(this.fieldDeclaration.getKind() == AbstractVariableDeclaration.ENUM_CONSTANT) {
// fieldDeclaration is an enum constant
for (int i = 0; i < this.anonymousTypeCount; i++){
RecoveredType recoveredType = this.anonymousTypes[i];
TypeDeclaration typeDeclaration = recoveredType.typeDeclaration;
if(typeDeclaration.declarationSourceEnd == 0) {
typeDeclaration.declarationSourceEnd = this.fieldDeclaration.declarationSourceEnd;
typeDeclaration.bodyEnd = this.fieldDeclaration.declarationSourceEnd;
}
// if the enum is recovered then enum constants must be recovered too.
// depth is considered as the same as the depth of the enum
recoveredType.updatedTypeDeclaration(depth, knownTypes);
}
}
}
return this.fieldDeclaration;
}
/*
* 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) {
if(this.fieldDeclaration.getKind() == AbstractVariableDeclaration.ENUM_CONSTANT) {
updateSourceEndIfNecessary(braceEnd - 1);
return this.parent;
} else {
this.alreadyCompletedFieldInitialization = true;
}
}
return this;
} else if (this.bracketBalance == 0) {
this.alreadyCompletedFieldInitialization = true;
updateSourceEndIfNecessary(braceEnd - 1);
}
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.fieldDeclaration.declarationSourceEnd == 0
&& (this.fieldDeclaration.type instanceof ArrayTypeReference || this.fieldDeclaration.type instanceof ArrayQualifiedTypeReference)
&& !this.alreadyCompletedFieldInitialization){
this.bracketBalance++;
return null; // no update is necessary (array initializer)
}
if (this.fieldDeclaration.declarationSourceEnd == 0
&& this.fieldDeclaration.getKind() == AbstractVariableDeclaration.ENUM_CONSTANT){
this.bracketBalance++;
return null; // no update is necessary (enum constant)
}
// might be an array initializer
this.updateSourceEndIfNecessary(braceStart - 1, braceEnd - 1);
return this.parent.updateOnOpeningBrace(braceStart, braceEnd);
}
public void updateParseTree(){
updatedFieldDeclaration(0, new HashSet());
}
/*
* Update the declarationSourceEnd of the corresponding parse node
*/
public void updateSourceEndIfNecessary(int bodyStart, int bodyEnd){
if (this.fieldDeclaration.declarationSourceEnd == 0) {
this.fieldDeclaration.declarationSourceEnd = bodyEnd;
this.fieldDeclaration.declarationEnd = bodyEnd;
}
}
}
