| /******************************************************************************* |
| * Copyright (c) 2000, 2019 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 statement structure for parsing recovery |
| */ |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.eclipse.jdt.internal.compiler.ast.ASTNode; |
| import org.eclipse.jdt.internal.compiler.ast.Block; |
| import org.eclipse.jdt.internal.compiler.ast.ForeachStatement; |
| import org.eclipse.jdt.internal.compiler.ast.Statement; |
| import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration; |
| |
| public class RecoveredStatement extends RecoveredElement { |
| |
| public Statement statement; |
| RecoveredBlock nestedBlock; |
| |
| public RecoveredStatement(Statement statement, RecoveredElement parent, int bracketBalance){ |
| super(parent, bracketBalance); |
| this.statement = statement; |
| } |
| |
| /* |
| * Answer the associated parsed structure |
| */ |
| @Override |
| public ASTNode parseTree() { |
| return this.statement; |
| } |
| /* |
| * Answer the very source end of the corresponding parse node |
| */ |
| @Override |
| public int sourceEnd(){ |
| return this.statement.sourceEnd; |
| } |
| @Override |
| public String toString(int tab){ |
| return tabString(tab) + "Recovered statement:\n" + this.statement.print(tab + 1, new StringBuffer(10)); //$NON-NLS-1$ |
| } |
| public Statement updatedStatement(int depth, Set<TypeDeclaration> knownTypes){ |
| if (this.nestedBlock != null) { |
| this.nestedBlock.updatedStatement(depth, knownTypes); |
| // block has already been assigned in its parent statement |
| } |
| return this.statement; |
| } |
| @Override |
| public void updateParseTree(){ |
| updatedStatement(0, new HashSet<TypeDeclaration>()); |
| } |
| /* |
| * Update the declarationSourceEnd of the corresponding parse node |
| */ |
| @Override |
| public void updateSourceEndIfNecessary(int bodyStart, int bodyEnd){ |
| if (this.statement.sourceEnd == 0) |
| this.statement.sourceEnd = bodyEnd; |
| } |
| @Override |
| public RecoveredElement updateOnClosingBrace(int braceStart, int braceEnd){ |
| if ((--this.bracketBalance <= 0) && (this.parent != null)){ |
| this.updateSourceEndIfNecessary(braceStart, braceEnd); |
| return this.parent.updateOnClosingBrace(braceStart, braceEnd); |
| } |
| return this; |
| } |
| @Override |
| public RecoveredElement add(Block nestedBlockDeclaration, int bracketBalanceValue) { |
| if (this.statement instanceof ForeachStatement) { |
| ForeachStatement foreach = (ForeachStatement) this.statement; |
| |
| // see RecoveredBlock.add(Block, int): |
| resetPendingModifiers(); |
| |
| /* do not consider a nested block starting passed the block end (if set) |
| it must be belonging to an enclosing block */ |
| if (foreach.sourceEnd != 0 |
| && foreach.action != null // if action is unassigned then foreach.sourceEnd is not yet the real end. |
| && nestedBlockDeclaration.sourceStart > foreach.sourceEnd) { |
| return this.parent.add(nestedBlockDeclaration, bracketBalanceValue); |
| } |
| foreach.action = nestedBlockDeclaration; |
| |
| RecoveredBlock element = new RecoveredBlock(nestedBlockDeclaration, this, bracketBalanceValue); |
| |
| if(parser().statementRecoveryActivated) { |
| addBlockStatement(element); |
| } |
| this.nestedBlock = element; |
| |
| if (nestedBlockDeclaration.sourceEnd == 0) return element; |
| return this; |
| } else { |
| return super.add(nestedBlockDeclaration, bracketBalanceValue); |
| } |
| } |
| @Override |
| public RecoveredElement add(Statement stmt, int bracketBalanceValue) { |
| if (this.statement instanceof ForeachStatement) { |
| ForeachStatement foreach = (ForeachStatement) this.statement; |
| if (foreach.action == null) { |
| // add the action to a block-less foreach, so that the action can see the for variable |
| foreach.action = stmt; |
| return this; |
| } |
| } |
| return super.add(stmt, bracketBalanceValue); |
| } |
| } |