| /******************************************************************************* |
| * Copyright (c) 2000, 2013 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.compiler.parser; |
| |
| /** |
| * Internal local variable structure for parsing recovery |
| */ |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| 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.LocalDeclaration; |
| import org.eclipse.jdt.internal.compiler.ast.Statement; |
| |
| @SuppressWarnings("rawtypes") |
| public class RecoveredLocalVariable extends RecoveredStatement { |
| |
| public RecoveredAnnotation[] annotations; |
| public int annotationCount; |
| public int modifiers; |
| public int modifiersStart; |
| |
| public LocalDeclaration localDeclaration; |
| public 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. |
| */ |
| @Override |
| public RecoveredElement add(Statement stmt, int bracketBalanceValue) { |
| |
| if (this.alreadyCompletedLocalInitialization || !(stmt instanceof Expression && ((Expression) stmt).isTrulyExpression())) { |
| 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; |
| } |
| } |
| public void attach(RecoveredAnnotation[] annots, int annotCount, int mods, int modsSourceStart) { |
| if (annotCount > 0) { |
| Annotation[] existingAnnotations = this.localDeclaration.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 |
| */ |
| @Override |
| public ASTNode parseTree(){ |
| return this.localDeclaration; |
| } |
| /* |
| * Answer the very source end of the corresponding parse node |
| */ |
| @Override |
| public int sourceEnd(){ |
| return this.localDeclaration.declarationSourceEnd; |
| } |
| @Override |
| public String toString(int tab) { |
| return tabString(tab) + "Recovered local variable:\n" + this.localDeclaration.print(tab + 1, new StringBuffer(10)); //$NON-NLS-1$ |
| } |
| @Override |
| public Statement updatedStatement(int depth, Set knownTypes){ |
| /* update annotations */ |
| if (this.modifiers != 0) { |
| this.localDeclaration.modifiers |= this.modifiers; |
| if (this.modifiersStart < this.localDeclaration.declarationSourceStart) { |
| this.localDeclaration.declarationSourceStart = this.modifiersStart; |
| } |
| } |
| /* update annotations */ |
| if (this.annotationCount > 0){ |
| int existingCount = this.localDeclaration.annotations == null ? 0 : this.localDeclaration.annotations.length; |
| Annotation[] annotationReferences = new Annotation[existingCount + this.annotationCount]; |
| if (existingCount > 0){ |
| System.arraycopy(this.localDeclaration.annotations, 0, annotationReferences, this.annotationCount, existingCount); |
| } |
| for (int i = 0; i < this.annotationCount; i++){ |
| annotationReferences[i] = this.annotations[i].updatedAnnotationReference(); |
| } |
| this.localDeclaration.annotations = annotationReferences; |
| |
| int start = this.annotations[0].annotation.sourceStart; |
| if (start < this.localDeclaration.declarationSourceStart) { |
| this.localDeclaration.declarationSourceStart = start; |
| } |
| } |
| return this.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. |
| */ |
| @Override |
| public RecoveredElement updateOnClosingBrace(int braceStart, int braceEnd){ |
| if (this.bracketBalance > 0){ // was an array initializer |
| this.bracketBalance--; |
| if (this.bracketBalance == 0) this.alreadyCompletedLocalInitialization = true; |
| return this; |
| } |
| 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. |
| */ |
| @Override |
| public RecoveredElement updateOnOpeningBrace(int braceStart, int braceEnd){ |
| if (this.localDeclaration.declarationSourceEnd == 0 |
| && (this.localDeclaration.type instanceof ArrayTypeReference || this.localDeclaration.type instanceof ArrayQualifiedTypeReference) |
| && !this.alreadyCompletedLocalInitialization){ |
| this.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); |
| } |
| @Override |
| public void updateParseTree(){ |
| updatedStatement(0, new HashSet()); |
| } |
| /* |
| * Update the declarationSourceEnd of the corresponding parse node |
| */ |
| @Override |
| public void updateSourceEndIfNecessary(int bodyStart, int bodyEnd){ |
| if (this.localDeclaration.declarationSourceEnd == 0) { |
| this.localDeclaration.declarationSourceEnd = bodyEnd; |
| this.localDeclaration.declarationEnd = bodyEnd; |
| } |
| } |
| } |