+++ /dev/null
-/*******************************************************************************
- * 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 structure for parsing recovery
- */
-import org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration;
-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.ImportReference;
-import org.eclipse.jdt.internal.compiler.ast.LocalDeclaration;
-import org.eclipse.jdt.internal.compiler.ast.Statement;
-import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
-
-public class RecoveredElement {
-
- public RecoveredElement parent;
- public int bracketBalance;
- public boolean foundOpeningBrace;
- protected Parser recoveringParser;
-public RecoveredElement(RecoveredElement parent, int bracketBalance){
- this(parent, bracketBalance, null);
-}
-public RecoveredElement(RecoveredElement parent, int bracketBalance, Parser parser){
- this.parent = parent;
- this.bracketBalance = bracketBalance;
- this.recoveringParser = parser;
-}
-/*
- * Record a method declaration
- */
-public RecoveredElement add(AbstractMethodDeclaration methodDeclaration, int bracketBalanceValue) {
-
- /* default behavior is to delegate recording to parent if any */
- if (this.parent == null) return this; // ignore
- this.updateSourceEndIfNecessary(this.previousAvailableLineEnd(methodDeclaration.declarationSourceStart - 1));
- return this.parent.add(methodDeclaration, bracketBalanceValue);
-}
-/*
- * Record a nested block declaration
- */
-public RecoveredElement add(Block nestedBlockDeclaration, int bracketBalanceValue) {
-
- /* default behavior is to delegate recording to parent if any */
- if (this.parent == null) return this; // ignore
- this.updateSourceEndIfNecessary(this.previousAvailableLineEnd(nestedBlockDeclaration.sourceStart - 1));
- return this.parent.add(nestedBlockDeclaration, bracketBalanceValue);
-}
-/*
- * Record a field declaration
- */
-public RecoveredElement add(FieldDeclaration fieldDeclaration, int bracketBalanceValue) {
-
- /* default behavior is to delegate recording to parent if any */
- if (this.parent == null) return this; // ignore
- this.updateSourceEndIfNecessary(this.previousAvailableLineEnd(fieldDeclaration.declarationSourceStart - 1));
- return this.parent.add(fieldDeclaration, bracketBalanceValue);
-}
-/*
- * Record an import reference
- */
-public RecoveredElement add(ImportReference importReference, int bracketBalanceValue){
-
- /* default behavior is to delegate recording to parent if any */
- if (this.parent == null) return this; // ignore
- this.updateSourceEndIfNecessary(this.previousAvailableLineEnd(importReference.declarationSourceStart - 1));
- return this.parent.add(importReference, bracketBalanceValue);
-}
-/*
- * Record a local declaration
- */
-public RecoveredElement add(LocalDeclaration localDeclaration, int bracketBalanceValue) {
-
- /* default behavior is to delegate recording to parent if any */
- if (this.parent == null) return this; // ignore
- this.updateSourceEndIfNecessary(this.previousAvailableLineEnd(localDeclaration.declarationSourceStart - 1));
- return this.parent.add(localDeclaration, bracketBalanceValue);
-}
-/*
- * Record a statement
- */
-public RecoveredElement add(Statement statement, int bracketBalanceValue) {
-
- /* default behavior is to delegate recording to parent if any */
- if (this.parent == null) return this; // ignore
- this.updateSourceEndIfNecessary(this.previousAvailableLineEnd(statement.sourceStart - 1));
- return this.parent.add(statement, bracketBalanceValue);
-}
-/*
- * Record a type declaration
- */
-public RecoveredElement add(TypeDeclaration typeDeclaration, int bracketBalanceValue){
-
- /* default behavior is to delegate recording to parent if any */
- if (this.parent == null) return this; // ignore
- this.updateSourceEndIfNecessary(this.previousAvailableLineEnd(typeDeclaration.declarationSourceStart - 1));
- return this.parent.add(typeDeclaration, bracketBalanceValue);
-}
-/*
- * Answer the depth of this element, considering the parent link.
- */
-public int depth(){
- int depth = 0;
- RecoveredElement current = this;
- while ((current = current.parent) != null) depth++;
- return depth;
-}
-/*
- * Answer the enclosing method node, or null if none
- */
-public RecoveredInitializer enclosingInitializer(){
- RecoveredElement current = this;
- while (current != null){
- if (current instanceof RecoveredInitializer){
- return (RecoveredInitializer) current;
- }
- current = current.parent;
- }
- return null;
-}
-/*
- * Answer the enclosing method node, or null if none
- */
-public RecoveredMethod enclosingMethod(){
- RecoveredElement current = this;
- while (current != null){
- if (current instanceof RecoveredMethod){
- return (RecoveredMethod) current;
- }
- current = current.parent;
- }
- return null;
-}
-/*
- * Answer the enclosing type node, or null if none
- */
-public RecoveredType enclosingType(){
- RecoveredElement current = this;
- while (current != null){
- if (current instanceof RecoveredType){
- return (RecoveredType) current;
- }
- current = current.parent;
- }
- return null;
-}
-/*
- * Answer the closest specified parser
- */
-public Parser parser(){
- RecoveredElement current = this;
- while (current != null){
- if (current.recoveringParser != null){
- return current.recoveringParser;
- }
- current = current.parent;
- }
- return null;
-}
-/*
- * Answer the associated parsed structure
- */
-public ASTNode parseTree(){
- return null;
-}
-/*
- * Iterate the enclosing blocks and tag them so as to preserve their content
- */
-public void preserveEnclosingBlocks(){
- RecoveredElement current = this;
- while (current != null){
- if (current instanceof RecoveredBlock){
- ((RecoveredBlock)current).preserveContent = true;
- }
- if (current instanceof RecoveredType){ // for anonymous types
- ((RecoveredType)current).preserveContent = true;
- }
- current = current.parent;
- }
-}
-/*
- * Answer the position of the previous line end if
- * there is nothing but spaces in between it and the
- * line end. Used to trim spaces on unclosed elements.
- */
-public int previousAvailableLineEnd(int position){
-
- Parser parser = this.parser();
- if (parser == null) return position;
-
- Scanner scanner = parser.scanner;
- if (scanner.lineEnds == null) return position;
-
- int index = scanner.getLineNumber(position);
- if (index < 2) return position;
- int previousLineEnd = scanner.lineEnds[index-2];
-
- char[] source = scanner.source;
- for (int i = previousLineEnd+1; i < position; i++){
- if (!(source[i] == ' ' || source[i] == '\t')) return position;
- }
- return previousLineEnd;
-}
-/*
- * Answer the very source end of the corresponding parse node
- */
-public int sourceEnd(){
- return 0;
-}
-protected String tabString(int tab) {
- StringBuffer result = new StringBuffer();
- for (int i = tab; i > 0; i--) {
- result.append(" "); //$NON-NLS-1$
- }
- return result.toString();
-}
-/*
- * Answer the top node
- */
-public RecoveredElement topElement(){
- RecoveredElement current = this;
- while (current.parent != null){
- current = current.parent;
- }
- return current;
-}
-public String toString() {
- return toString(0);
-}
-public String toString(int tab) {
- return super.toString();
-}
-/*
- * Answer the enclosing type node, or null if none
- */
-public RecoveredType type(){
- RecoveredElement current = this;
- while (current != null){
- if (current instanceof RecoveredType){
- return (RecoveredType) current;
- }
- current = current.parent;
- }
- return null;
-}
-/*
- * Update the bodyStart of the corresponding parse node
- */
-public void updateBodyStart(int bodyStart){
- this.foundOpeningBrace = true;
-}
-/*
- * Update the corresponding parse node from parser state which
- * is about to disappear because of restarting recovery
- */
-public void updateFromParserState(){
- // default implementation: do nothing
-}
-/*
- * 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 ((--this.bracketBalance <= 0) && (this.parent != null)){
- this.updateSourceEndIfNecessary(braceStart, braceEnd);
- return this.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 braceEnd){return null;}*/
-public RecoveredElement updateOnOpeningBrace(int braceStart, int braceEnd){
-
- if (this.bracketBalance++ == 0){
- this.updateBodyStart(braceEnd + 1);
- return this;
- }
- return null; // no update is necessary
-}
-/*
- * Final update the corresponding parse node
- */
-public void updateParseTree(){
- // default implementation: do nothing
-}
-/*
- * Update the declarationSourceEnd of the corresponding parse node
- */
-public void updateSourceEndIfNecessary(int braceStart, int braceEnd){
- // default implementation: do nothing
-}
-public void updateSourceEndIfNecessary(int sourceEnd){
- this.updateSourceEndIfNecessary(sourceEnd + 1, sourceEnd);
-}
-}
projects / org.ibex.tool.git / blobdiff