| /******************************************************************************* |
| * 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 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 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; |
| |
| public class RecoveredLocalVariable extends RecoveredStatement { |
| |
| public LocalDeclaration localDeclaration; |
| 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; |
| } |
| } |
| /* |
| * Answer the associated parsed structure |
| */ |
| public ASTNode parseTree(){ |
| return 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" + localDeclaration.print(tab + 1, new StringBuffer(10)); //$NON-NLS-1$ |
| } |
| public Statement updatedStatement(){ |
| return 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 (bracketBalance > 0){ // was an array initializer |
| bracketBalance--; |
| if (bracketBalance == 0) alreadyCompletedLocalInitialization = true; |
| return this; |
| } |
| 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 (localDeclaration.declarationSourceEnd == 0 |
| && localDeclaration.type instanceof ArrayTypeReference |
| && !alreadyCompletedLocalInitialization){ |
| 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.updatedStatement(); |
| } |
| /* |
| * 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; |
| } |
| } |
| } |