| /******************************************************************************* |
| * 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; |
| } |
| } |
| } |