diff options
Diffstat (limited to 'org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/CatchUsesReference.java')
-rw-r--r-- | org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/CatchUsesReference.java | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/CatchUsesReference.java b/org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/CatchUsesReference.java new file mode 100644 index 0000000..b3556cc --- /dev/null +++ b/org.eclipse.cdt.codan.checkers/src/org/eclipse/cdt/codan/checkers/sample/CatchUsesReference.java @@ -0,0 +1,82 @@ +/******************************************************************************* + * Copyright (c) 2009 Alena Laskavaia + * 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: + * Alena Laskavaia - initial API and implementation + *******************************************************************************/ + +package org.eclipse.cdt.codan.checkers.sample; + +import org.eclipse.cdt.codan.core.model.AbstractIndexAstChecker; +import org.eclipse.cdt.core.dom.ast.ASTVisitor; +import org.eclipse.cdt.core.dom.ast.IASTDeclaration; +import org.eclipse.cdt.core.dom.ast.IASTDeclarator; +import org.eclipse.cdt.core.dom.ast.IASTPointerOperator; +import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration; +import org.eclipse.cdt.core.dom.ast.IASTStatement; +import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit; +import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCatchHandler; +import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTReferenceOperator; +import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTryBlockStatement; + +/** + * @author Alena + * + */ +public class CatchUsesReference extends AbstractIndexAstChecker { + private static final String ER_ID = "org.eclipse.cdt.codan.checkers.sample.CatchUsesReference"; + + public void processAst(IASTTranslationUnit ast) { + // traverse the ast using the visitor pattern. + ast.accept(new OnCatch()); + } + + class OnCatch extends ASTVisitor { + OnCatch() { + shouldVisitStatements = true; + } + public int visit(IASTStatement stmt) { + if (stmt instanceof ICPPASTTryBlockStatement) { + ICPPASTTryBlockStatement tblock = (ICPPASTTryBlockStatement) stmt; + ICPPASTCatchHandler[] catchHandlers = tblock.getCatchHandlers(); + for (int i = 0; i < catchHandlers.length; i++) { + ICPPASTCatchHandler catchHandler = catchHandlers[i]; + if (usesReference(catchHandler)) { + reportProblem(ER_ID, catchHandler.getDeclaration(), "Catch clause uses reference in declaration of exception"); + } + } + + return PROCESS_SKIP; + } + return PROCESS_CONTINUE; + } + /** + * @param catchHandler + * @return + */ + private boolean usesReference(ICPPASTCatchHandler catchHandler) { + IASTDeclaration declaration = catchHandler.getDeclaration(); + if (declaration instanceof IASTSimpleDeclaration) { + IASTDeclarator[] declarators = ((IASTSimpleDeclaration) declaration).getDeclarators(); + for (int i = 0; i < declarators.length; i++) { + IASTDeclarator d = declarators[i]; + IASTPointerOperator[] pointerOperators = d.getPointerOperators(); + for (int j = 0; j < pointerOperators.length; j++) { + IASTPointerOperator po = pointerOperators[j]; + if (po instanceof ICPPASTReferenceOperator) { + return true; + } + + } + } + } + return false; + } + } + + +} |