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Bug 436616 - NPE in ASTCommenter$PreprocessorRangeChecker.checkOffsets

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This commit is contained in:
Sergey Prigogin 2014-06-04 10:37:21 -07:00
parent aa70cfe5d7
commit 0aa493f3d8
1 changed files with 20 additions and 16 deletions
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36
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/rewrite/commenthandler/ASTCommenter.java
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@ -1,5 +1,5 @@
/*******************************************************************************
* Copyright (c) 2008, 2013 Institute for Software, HSR Hochschule fuer Technik
* Copyright (c) 2008, 2014 Institute for Software, HSR Hochschule fuer Technik
* Rapperswil, University of applied sciences and others
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
@ -41,12 +41,13 @@ import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateParameter;
/**
* This is the starting point of the entire comment handling process. The creation of the
* NodeCommentMap is based on the IASTTranslationUnit. From this TranslationUnit the comments
* are extracted and skipped if they belong not to the same workspace. An ASTCommenterVisitor
* is initialized with this collection of comments. And the visit process can start.
* {@link NodeCommentMap} is based on the {@link IASTTranslationUnit}. From this translation unit
* the comments are extracted and skipped if they belong not to the same workspace.
* An {@link ASTCommenterVisitor} is initialized with this collection of comments. And the visit
* process can start.
*
* @see org.eclipse.cdt.internal.core.dom.rewrite.commenthandler.NodeCommenter
* @see org.eclipse.cdt.internal.core.dom.rewrite.commenthandler.NodeCommentMap
* @see NodeCommenter
* @see NodeCommentMap
*
* @author Guido Zgraggen IFS
*/
@ -65,20 +66,23 @@ public class ASTCommenter {
private int checkOffsets(IASTNode node) {
IASTFileLocation nodeLocation = node.getFileLocation();
if (nodeLocation == null)
return PROCESS_SKIP;
int nodeEndOffset = nodeLocation.getNodeOffset() + nodeLocation.getNodeLength();
int status = PROCESS_CONTINUE;
boolean nodeInBetweenCommentAndPpStmt = nodeEndOffset > commentLocation.getNodeOffset() && nodeEndOffset < ppStmtOffset;
boolean nodeInBetweenCommentAndPpStmt =
nodeEndOffset > commentLocation.getNodeOffset() && nodeEndOffset < ppStmtOffset;
if (isCommentOnSameLine(node) || nodeInBetweenCommentAndPpStmt) {
isPrePpStmtComment = false;
status = PROCESS_ABORT;
return PROCESS_ABORT;
} else if (nodeEndOffset < commentLocation.getNodeOffset()) {
status = PROCESS_SKIP;
return PROCESS_SKIP;
} else if (nodeLocation.getNodeOffset() > ppStmtOffset) {
status = PROCESS_ABORT;
return PROCESS_ABORT;
}
return status;
return PROCESS_CONTINUE;
}
private boolean isCommentOnSameLine(IASTNode node) {
@ -184,8 +188,8 @@ public class ASTCommenter {
}
/**
* Adds all comments given in {@code ast} to the {@code commentMap}. Calling this twice will have no
* effect.
* Adds all comments given in {@code ast} to the {@code commentMap}. Calling this twice has
* no effect.
*
* @param ast
* the AST which contains the comments to add
@ -197,7 +201,7 @@ public class ASTCommenter {
return;
}
IASTComment[] commentsArray = ast.getComments();
List<IASTComment> comments = new ArrayList<IASTComment>(commentsArray.length);
List<IASTComment> comments = new ArrayList<>(commentsArray.length);
for (IASTComment comment : commentsArray) {
if (comment.isPartOfTranslationUnitFile()) {
comments.add(comment);
@ -245,7 +249,7 @@ public class ASTCommenter {
return;
}
List<IASTComment> freestandingComments = new ArrayList<IASTComment>(comments.size());
List<IASTComment> freestandingComments = new ArrayList<>(comments.size());
Iterator<IASTPreprocessorStatement> statementsIter = preprocessorStatements.iterator();
Iterator<IASTComment> commentIter = comments.iterator();
IASTPreprocessorStatement curStatement = getNextNodeInTu(statementsIter);