/*******************************************************************************
* 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 initializer structure for parsing recovery
*/
import org.eclipse.jdt.core.compiler.*;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.Block;
import org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.Initializer;
import org.eclipse.jdt.internal.compiler.ast.LocalDeclaration;
import org.eclipse.jdt.internal.compiler.ast.Statement;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.lookup.BaseTypes;
import org.eclipse.jdt.internal.compiler.lookup.CompilerModifiers;
public class RecoveredInitializer extends RecoveredField implements CompilerModifiers, TerminalTokens, BaseTypes {
public RecoveredType[] localTypes;
public int localTypeCount;
public RecoveredBlock initializerBody;
public RecoveredInitializer(FieldDeclaration fieldDeclaration, RecoveredElement parent, int bracketBalance){
this(fieldDeclaration, parent, bracketBalance, null);
}
public RecoveredInitializer(FieldDeclaration fieldDeclaration, RecoveredElement parent, int bracketBalance, Parser parser){
super(fieldDeclaration, parent, bracketBalance, parser);
this.foundOpeningBrace = true;
}
/*
* Record a nested block declaration
*/
public RecoveredElement add(Block nestedBlockDeclaration, int bracketBalanceValue) {
/* default behavior is to delegate recording to parent if any,
do not consider elements passed the known end (if set)
it must be belonging to an enclosing element
*/
if (fieldDeclaration.declarationSourceEnd > 0
&& nestedBlockDeclaration.sourceStart > fieldDeclaration.declarationSourceEnd){
if (this.parent == null) return this; // ignore
return this.parent.add(nestedBlockDeclaration, bracketBalanceValue);
}
/* consider that if the opening brace was not found, it is there */
if (!foundOpeningBrace){
foundOpeningBrace = true;
this.bracketBalance++;
}
initializerBody = new RecoveredBlock(nestedBlockDeclaration, this, bracketBalanceValue);
if (nestedBlockDeclaration.sourceEnd == 0) return initializerBody;
return this;
}
/*
* Record a field declaration (act like inside method body)
*/
public RecoveredElement add(FieldDeclaration newFieldDeclaration, int bracketBalanceValue) {
/* local variables inside initializer can only be final and non void */
char[][] fieldTypeName;
if ((newFieldDeclaration.modifiers & ~AccFinal) != 0 /* local var can only be final */
|| (newFieldDeclaration.type == null) // initializer
|| ((fieldTypeName = newFieldDeclaration.type.getTypeName()).length == 1 // non void
&& CharOperation.equals(fieldTypeName[0], VoidBinding.sourceName()))){
if (this.parent == null) return this; // ignore
this.updateSourceEndIfNecessary(this.previousAvailableLineEnd(newFieldDeclaration.declarationSourceStart - 1));
return this.parent.add(newFieldDeclaration, bracketBalanceValue);
}
/* default behavior is to delegate recording to parent if any,
do not consider elements passed the known end (if set)
it must be belonging to an enclosing element
*/
if (this.fieldDeclaration.declarationSourceEnd > 0
&& newFieldDeclaration.declarationSourceStart > this.fieldDeclaration.declarationSourceEnd){
if (this.parent == null) return this; // ignore
return this.parent.add(newFieldDeclaration, bracketBalanceValue);
}
// still inside initializer, treat as local variable
return this; // ignore
}
/*
* Record a local declaration - regular method should have been created a block body
*/
public RecoveredElement add(LocalDeclaration localDeclaration, int bracketBalanceValue) {
/* do not consider a type starting passed the type end (if set)
it must be belonging to an enclosing type */
if (fieldDeclaration.declarationSourceEnd != 0
&& localDeclaration.declarationSourceStart > fieldDeclaration.declarationSourceEnd){
if (parent == null) return this; // ignore
return this.parent.add(localDeclaration, bracketBalanceValue);
}
/* method body should have been created */
Block block = new Block(0);
block.sourceStart = ((Initializer)fieldDeclaration).sourceStart;
RecoveredElement element = this.add(block, 1);
return element.add(localDeclaration, bracketBalanceValue);
}
/*
* Record a statement - regular method should have been created a block body
*/
public RecoveredElement add(Statement statement, int bracketBalanceValue) {
/* do not consider a statement starting passed the initializer end (if set)
it must be belonging to an enclosing type */
if (fieldDeclaration.declarationSourceEnd != 0
&& statement.sourceStart > fieldDeclaration.declarationSourceEnd){
if (parent == null) return this; // ignore
return this.parent.add(statement, bracketBalanceValue);
}
/* initializer body should have been created */
Block block = new Block(0);
block.sourceStart = ((Initializer)fieldDeclaration).sourceStart;
RecoveredElement element = this.add(block, 1);
return element.add(statement, bracketBalanceValue);
}
public RecoveredElement add(TypeDeclaration typeDeclaration, int bracketBalanceValue) {
/* do not consider a type starting passed the type end (if set)
it must be belonging to an enclosing type */
if (fieldDeclaration.declarationSourceEnd != 0
&& typeDeclaration.declarationSourceStart > fieldDeclaration.declarationSourceEnd){
if (parent == null) return this; // ignore
return this.parent.add(typeDeclaration, bracketBalanceValue);
}
if ((typeDeclaration.bits & ASTNode.IsLocalTypeMASK) != 0){
/* method body should have been created */
Block block = new Block(0);
block.sourceStart = ((Initializer)fieldDeclaration).sourceStart;
RecoveredElement element = this.add(block, 1);
return element.add(typeDeclaration, bracketBalanceValue);
}
if (localTypes == null) {
localTypes = new RecoveredType[5];
localTypeCount = 0;
} else {
if (localTypeCount == localTypes.length) {
System.arraycopy(
localTypes,
0,
(localTypes = new RecoveredType[2 * localTypeCount]),
0,
localTypeCount);
}
}
RecoveredType element = new RecoveredType(typeDeclaration, this, bracketBalanceValue);
localTypes[localTypeCount++] = element;
/* consider that if the opening brace was not found, it is there */
if (!foundOpeningBrace){
foundOpeningBrace = true;
this.bracketBalance++;
}
return element;
}
public String toString(int tab) {
StringBuffer result = new StringBuffer(tabString(tab));
result.append("Recovered initializer:\n"); //$NON-NLS-1$
this.fieldDeclaration.print(tab + 1, result);
if (this.initializerBody != null) {
result.append("\n"); //$NON-NLS-1$
result.append(this.initializerBody.toString(tab + 1));
}
return result.toString();
}
public FieldDeclaration updatedFieldDeclaration(){
if (initializerBody != null){
Block block = initializerBody.updatedBlock();
if (block != null){
((Initializer)fieldDeclaration).block = block;
}
if (this.localTypeCount > 0) fieldDeclaration.bits |= ASTNode.HasLocalTypeMASK;
}
if (fieldDeclaration.sourceEnd == 0){
fieldDeclaration.sourceEnd = fieldDeclaration.declarationSourceEnd;
}
return fieldDeclaration;
}
/*
* A closing brace got consumed, might have closed the current element,
* in which case both the currentElement is exited
*/
public RecoveredElement updateOnClosingBrace(int braceStart, int braceEnd){
if ((--bracketBalance <= 0) && (parent != null)){
this.updateSourceEndIfNecessary(braceStart, braceEnd);
return parent;
}
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){
bracketBalance++;
return this; // request to restart
}
/*
* Update the declarationSourceEnd of the corresponding parse node
*/
public void updateSourceEndIfNecessary(int braceStart, int braceEnd){
if (this.fieldDeclaration.declarationSourceEnd == 0) {
Initializer initializer = (Initializer)fieldDeclaration;
if(parser().rBraceSuccessorStart >= braceEnd) {
if (initializer.bodyStart < parser().rBraceEnd) {
initializer.declarationSourceEnd = parser().rBraceEnd;
} else {
initializer.declarationSourceEnd = initializer.bodyStart;
}
if (initializer.bodyStart < parser().rBraceStart) {
initializer.bodyEnd = parser().rBraceStart;
} else {
initializer.bodyEnd = initializer.bodyStart;
}
} else {
initializer.declarationSourceEnd = braceEnd;
initializer.bodyEnd = braceStart - 1;
}
if(initializer.block != null) {
initializer.block.sourceEnd = initializer.declarationSourceEnd;
}
}
}
}