/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.parser;
/**
* Internal field structure for parsing recovery
*/
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 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 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.IsAnonymousTypeMASK) == 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;
}
}
/*
* Answer the associated parsed structure
*/
public ASTNode parseTree(){
return 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"); //$NON-NLS-1$
fieldDeclaration.print(tab + 1, buffer);
if (this.anonymousTypes != null) {
for (int i = 0; i < this.anonymousTypeCount; i++){
buffer.append("\n"); //$NON-NLS-1$
buffer.append(anonymousTypes[i].toString(tab + 1));
}
}
return buffer.toString();
}
public FieldDeclaration updatedFieldDeclaration(){
if (this.anonymousTypes != null && fieldDeclaration.initialization == null) {
for (int i = 0; i < this.anonymousTypeCount; i++){
if (anonymousTypes[i].preserveContent){
fieldDeclaration.initialization = this.anonymousTypes[i].updatedTypeDeclaration().allocation;
}
}
if (this.anonymousTypeCount > 0) fieldDeclaration.bits |= ASTNode.HasLocalTypeMASK;
}
return 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 (bracketBalance > 0){ // was an array initializer
bracketBalance--;
if (bracketBalance == 0) alreadyCompletedFieldInitialization = true;
return this;
} else if (bracketBalance == 0) {
alreadyCompletedFieldInitialization = true;
updateSourceEndIfNecessary(braceEnd - 1);
}
if (parent != null){
return 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 (fieldDeclaration.declarationSourceEnd == 0
&& fieldDeclaration.type instanceof ArrayTypeReference
&& !alreadyCompletedFieldInitialization){
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(){
this.updatedFieldDeclaration();
}
/*
* 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;
}
}
}