/** * Looks for local variable declarations. For every declaration of a variable, the parent {@link * Block} denoting the variable's scope is stored in {variableScope} map. * * @param node the node to visit */ @Override public boolean visit(final VariableDeclarationStatement node) { for (final Object fragment : node.fragments()) { final VariableDeclarationFragment frag = (VariableDeclarationFragment) fragment; addBinding(node, frag.getName(), node.getType()); } return true; }
/* * @see ASTVisitor#visit(VariableDeclarationStatement) */ public boolean visit(VariableDeclarationStatement node) { if (node.getAST().apiLevel() >= AST.JLS3) { printModifiers(node.modifiers()); } node.getType().accept(this); this.fBuffer.append(" "); // $NON-NLS-1$ for (Iterator it = node.fragments().iterator(); it.hasNext(); ) { VariableDeclarationFragment f = (VariableDeclarationFragment) it.next(); f.accept(this); if (it.hasNext()) { this.fBuffer.append(", "); // $NON-NLS-1$ } } this.fBuffer.append(";"); // $NON-NLS-1$ return false; }
@Override public boolean visit(VariableDeclarationStatement node) { Type typ = node.getType(); if (typ.isSimpleType()) { SimpleType simple = (SimpleType) typ; String typName = simple.getName().getFullyQualifiedName(); List<VariableDeclarationFragment> vars = node.fragments(); for (VariableDeclarationFragment var : vars) { map.put(var.getName().getIdentifier(), typName); } } if (typ.isQualifiedType()) { QualifiedType qual = (QualifiedType) typ; String typName = qual.getName().getFullyQualifiedName(); List<VariableDeclarationFragment> vars = node.fragments(); for (VariableDeclarationFragment var : vars) { map.put(var.getName().getIdentifier(), typName); } } if (typ.isPrimitiveType()) { PrimitiveType prim = (PrimitiveType) typ; String typName = prim.getPrimitiveTypeCode().toString(); List<VariableDeclarationFragment> vars = node.fragments(); for (VariableDeclarationFragment var : vars) { map.put(var.getName().getIdentifier(), typName); } } if (typ.isParameterizedType()) { ParameterizedType prim = (ParameterizedType) typ; String typName = prim.getType().toString(); List<VariableDeclarationFragment> vars = node.fragments(); for (VariableDeclarationFragment var : vars) { map.put(var.getName().getIdentifier(), typName); } } if (typ.isArrayType()) { ArrayType prim = (ArrayType) typ; String typName = "Array"; List<VariableDeclarationFragment> vars = node.fragments(); for (VariableDeclarationFragment var : vars) { map.put(var.getName().getIdentifier(), typName); } } return true; }
@Override public void endVisit(VariableDeclarationStatement node) { checkTypeInDeclaration(node.getType()); super.endVisit(node); }
private ASTRewrite doAddLocal(CompilationUnit cu) { AST ast = cu.getAST(); Block body; BodyDeclaration decl = ASTResolving.findParentBodyDeclaration(fOriginalNode); IBinding targetContext = null; if (decl instanceof MethodDeclaration) { body = (((MethodDeclaration) decl).getBody()); targetContext = ((MethodDeclaration) decl).resolveBinding(); } else if (decl instanceof Initializer) { body = (((Initializer) decl).getBody()); targetContext = Bindings.getBindingOfParentType(decl); } else { return null; } ASTRewrite rewrite = ASTRewrite.create(ast); ImportRewrite imports = createImportRewrite((CompilationUnit) decl.getRoot()); ImportRewriteContext importRewriteContext = new ContextSensitiveImportRewriteContext(decl, imports); SimpleName[] names = getAllReferences(body); ASTNode dominant = getDominantNode(names); Statement dominantStatement = ASTResolving.findParentStatement(dominant); if (ASTNodes.isControlStatementBody(dominantStatement.getLocationInParent())) { dominantStatement = (Statement) dominantStatement.getParent(); } SimpleName node = names[0]; if (isAssigned(dominantStatement, node)) { // x = 1; -> int x = 1; Assignment assignment = (Assignment) node.getParent(); // trick to avoid comment removal around the statement: keep the expression statement // and replace the assignment with an VariableDeclarationExpression VariableDeclarationFragment newDeclFrag = ast.newVariableDeclarationFragment(); VariableDeclarationExpression newDecl = ast.newVariableDeclarationExpression(newDeclFrag); newDecl.setType(evaluateVariableType(ast, imports, importRewriteContext, targetContext)); Expression placeholder = (Expression) rewrite.createCopyTarget(assignment.getRightHandSide()); newDeclFrag.setInitializer(placeholder); newDeclFrag.setName(ast.newSimpleName(node.getIdentifier())); rewrite.replace(assignment, newDecl, null); addLinkedPosition(rewrite.track(newDecl.getType()), false, KEY_TYPE); addLinkedPosition(rewrite.track(newDeclFrag.getName()), true, KEY_NAME); setEndPosition(rewrite.track(assignment.getParent())); return rewrite; } else if ((dominant != dominantStatement) && isForStatementInit(dominantStatement, node)) { // for (x = 1;;) ->for (int x = 1;;) Assignment assignment = (Assignment) node.getParent(); VariableDeclarationFragment frag = ast.newVariableDeclarationFragment(); VariableDeclarationExpression expression = ast.newVariableDeclarationExpression(frag); frag.setName(ast.newSimpleName(node.getIdentifier())); Expression placeholder = (Expression) rewrite.createCopyTarget(assignment.getRightHandSide()); frag.setInitializer(placeholder); expression.setType(evaluateVariableType(ast, imports, importRewriteContext, targetContext)); rewrite.replace(assignment, expression, null); addLinkedPosition(rewrite.track(expression.getType()), false, KEY_TYPE); addLinkedPosition(rewrite.track(frag.getName()), true, KEY_NAME); setEndPosition(rewrite.track(expression)); return rewrite; } else if ((dominant != dominantStatement) && isEnhancedForStatementVariable(dominantStatement, node)) { // for (x: collectionOfT) -> for (T x: collectionOfT) EnhancedForStatement enhancedForStatement = (EnhancedForStatement) dominantStatement; SingleVariableDeclaration parameter = enhancedForStatement.getParameter(); Expression expression = enhancedForStatement.getExpression(); SimpleName newName = (SimpleName) rewrite.createMoveTarget(node); rewrite.set(parameter, SingleVariableDeclaration.NAME_PROPERTY, newName, null); ITypeBinding elementBinding = null; ITypeBinding typeBinding = expression.resolveTypeBinding(); if (typeBinding != null) { if (typeBinding.isArray()) { elementBinding = typeBinding.getElementType(); } else { ITypeBinding iterable = Bindings.findTypeInHierarchy(typeBinding, "java.lang.Iterable"); // $NON-NLS-1$ if (iterable != null) { ITypeBinding[] typeArguments = iterable.getTypeArguments(); if (typeArguments.length == 1) { elementBinding = typeArguments[0]; elementBinding = Bindings.normalizeForDeclarationUse(elementBinding, ast); } } } } Type type; if (elementBinding != null) { type = imports.addImport(elementBinding, ast, importRewriteContext); } else { type = ast.newSimpleType(ast.newSimpleName("Object")); // $NON-NLS-1$ } rewrite.set(parameter, SingleVariableDeclaration.TYPE_PROPERTY, type, null); addLinkedPosition(rewrite.track(type), false, KEY_TYPE); addLinkedPosition(rewrite.track(newName), true, KEY_NAME); setEndPosition(rewrite.track(expression)); return rewrite; } // foo(x) -> int x; foo(x) VariableDeclarationFragment newDeclFrag = ast.newVariableDeclarationFragment(); VariableDeclarationStatement newDecl = ast.newVariableDeclarationStatement(newDeclFrag); newDeclFrag.setName(ast.newSimpleName(node.getIdentifier())); newDecl.setType(evaluateVariableType(ast, imports, importRewriteContext, targetContext)); // newDeclFrag.setInitializer(ASTNodeFactory.newDefaultExpression(ast, newDecl.getType(), 0)); addLinkedPosition(rewrite.track(newDecl.getType()), false, KEY_TYPE); addLinkedPosition(rewrite.track(node), true, KEY_NAME); addLinkedPosition(rewrite.track(newDeclFrag.getName()), false, KEY_NAME); Statement statement = dominantStatement; List<? extends ASTNode> list = ASTNodes.getContainingList(statement); while (list == null && statement.getParent() instanceof Statement) { // parent must be if, for or while statement = (Statement) statement.getParent(); list = ASTNodes.getContainingList(statement); } if (list != null) { ASTNode parent = statement.getParent(); StructuralPropertyDescriptor childProperty = statement.getLocationInParent(); if (childProperty.isChildListProperty()) { rewrite .getListRewrite(parent, (ChildListPropertyDescriptor) childProperty) .insertBefore(newDecl, statement, null); return rewrite; } else { return null; } } return rewrite; }
private void createTryCatchStatement(org.eclipse.jdt.core.IBuffer buffer, String lineDelimiter) throws CoreException { List<Statement> result = new ArrayList<>(1); TryStatement tryStatement = getAST().newTryStatement(); ITypeBinding[] exceptions = fAnalyzer.getExceptions(); ImportRewriteContext context = new ContextSensitiveImportRewriteContext( fAnalyzer.getEnclosingBodyDeclaration(), fImportRewrite); if (!fIsMultiCatch) { for (int i = 0; i < exceptions.length; i++) { ITypeBinding exception = exceptions[i]; CatchClause catchClause = getAST().newCatchClause(); tryStatement.catchClauses().add(catchClause); SingleVariableDeclaration decl = getAST().newSingleVariableDeclaration(); String varName = StubUtility.getExceptionVariableName(fCUnit.getJavaProject()); String name = fScope.createName(varName, false); decl.setName(getAST().newSimpleName(name)); Type type = fImportRewrite.addImport(exception, getAST(), context); decl.setType(type); catchClause.setException(decl); Statement st = getCatchBody(ASTNodes.getQualifiedTypeName(type), name, lineDelimiter); if (st != null) { catchClause.getBody().statements().add(st); } fLinkedProposalModel .getPositionGroup(GROUP_EXC_TYPE + i, true) .addPosition(fRewriter.track(decl.getType()), i == 0); fLinkedProposalModel .getPositionGroup(GROUP_EXC_NAME + i, true) .addPosition(fRewriter.track(decl.getName()), false); } } else { List<ITypeBinding> filteredExceptions = filterSubtypeExceptions(exceptions); CatchClause catchClause = getAST().newCatchClause(); SingleVariableDeclaration decl = getAST().newSingleVariableDeclaration(); String varName = StubUtility.getExceptionVariableName(fCUnit.getJavaProject()); String name = fScope.createName(varName, false); decl.setName(getAST().newSimpleName(name)); UnionType unionType = getAST().newUnionType(); List<Type> types = unionType.types(); int i = 0; for (ITypeBinding exception : filteredExceptions) { Type type = fImportRewrite.addImport(exception, getAST(), context); types.add(type); fLinkedProposalModel .getPositionGroup(GROUP_EXC_TYPE + i, true) .addPosition(fRewriter.track(type), i == 0); i++; } decl.setType(unionType); catchClause.setException(decl); fLinkedProposalModel .getPositionGroup(GROUP_EXC_NAME + 0, true) .addPosition(fRewriter.track(decl.getName()), false); Statement st = getCatchBody("Exception", name, lineDelimiter); // $NON-NLS-1$ if (st != null) { catchClause.getBody().statements().add(st); } tryStatement.catchClauses().add(catchClause); } List<ASTNode> variableDeclarations = getSpecialVariableDeclarationStatements(); ListRewrite statements = fRewriter.getListRewrite(tryStatement.getBody(), Block.STATEMENTS_PROPERTY); boolean selectedNodeRemoved = false; ASTNode expressionStatement = null; for (int i = 0; i < fSelectedNodes.length; i++) { ASTNode node = fSelectedNodes[i]; if (node instanceof VariableDeclarationStatement && variableDeclarations.contains(node)) { AST ast = getAST(); VariableDeclarationStatement statement = (VariableDeclarationStatement) node; // Create a copy and remove the initializer VariableDeclarationStatement copy = (VariableDeclarationStatement) ASTNode.copySubtree(ast, statement); List<IExtendedModifier> modifiers = copy.modifiers(); for (Iterator<IExtendedModifier> iter = modifiers.iterator(); iter.hasNext(); ) { IExtendedModifier modifier = iter.next(); if (modifier.isModifier() && Modifier.isFinal(((Modifier) modifier).getKeyword().toFlagValue())) { iter.remove(); } } List<VariableDeclarationFragment> fragments = copy.fragments(); for (Iterator<VariableDeclarationFragment> iter = fragments.iterator(); iter.hasNext(); ) { VariableDeclarationFragment fragment = iter.next(); fragment.setInitializer(null); } CompilationUnit root = (CompilationUnit) statement.getRoot(); int extendedStart = root.getExtendedStartPosition(statement); // we have a leading comment and the comment is covered by the selection if (extendedStart != statement.getStartPosition() && extendedStart >= fSelection.getOffset()) { String commentToken = buffer.getText(extendedStart, statement.getStartPosition() - extendedStart); commentToken = Strings.trimTrailingTabsAndSpaces(commentToken); Type type = statement.getType(); String typeName = buffer.getText(type.getStartPosition(), type.getLength()); copy.setType( (Type) fRewriter.createStringPlaceholder(commentToken + typeName, type.getNodeType())); } result.add(copy); // convert the fragments into expression statements fragments = statement.fragments(); if (!fragments.isEmpty()) { List<ExpressionStatement> newExpressionStatements = new ArrayList<>(); for (Iterator<VariableDeclarationFragment> iter = fragments.iterator(); iter.hasNext(); ) { VariableDeclarationFragment fragment = iter.next(); Expression initializer = fragment.getInitializer(); if (initializer != null) { Assignment assignment = ast.newAssignment(); assignment.setLeftHandSide( (Expression) fRewriter.createCopyTarget(fragment.getName())); assignment.setRightHandSide((Expression) fRewriter.createCopyTarget(initializer)); newExpressionStatements.add(ast.newExpressionStatement(assignment)); } } if (!newExpressionStatements.isEmpty()) { if (fSelectedNodes.length == 1) { expressionStatement = fRewriter.createGroupNode( newExpressionStatements.toArray(new ASTNode[newExpressionStatements.size()])); } else { fRewriter.replace( statement, fRewriter.createGroupNode( newExpressionStatements.toArray(new ASTNode[newExpressionStatements.size()])), null); } } else { fRewriter.remove(statement, null); selectedNodeRemoved = true; } } else { fRewriter.remove(statement, null); selectedNodeRemoved = true; } } } result.add(tryStatement); ASTNode replacementNode; if (result.size() == 1) { replacementNode = result.get(0); } else { replacementNode = fRewriter.createGroupNode(result.toArray(new ASTNode[result.size()])); } if (fSelectedNodes.length == 1) { ASTNode selectedNode = fSelectedNodes[0]; if (selectedNode instanceof MethodReference) { MethodReference methodReference = (MethodReference) selectedNode; IMethodBinding functionalMethod = QuickAssistProcessor.getFunctionalMethodForMethodReference(methodReference); // functionalMethod is non-null and non-generic. See // ExceptionAnalyzer.handleMethodReference(MethodReference node). Assert.isTrue(functionalMethod != null && !functionalMethod.isGenericMethod()); LambdaExpression lambda = QuickAssistProcessor.convertMethodRefernceToLambda( methodReference, functionalMethod, fRootNode, fRewriter, null, true); ASTNode statementInBlock = (ASTNode) ((Block) lambda.getBody()).statements().get(0); fRewriter.replace(statementInBlock, replacementNode, null); statements.insertLast(statementInBlock, null); return; } LambdaExpression enclosingLambda = ASTResolving.findEnclosingLambdaExpression(selectedNode); if (enclosingLambda != null && selectedNode.getLocationInParent() == LambdaExpression.BODY_PROPERTY && enclosingLambda.resolveMethodBinding() != null) { QuickAssistProcessor.changeLambdaBodyToBlock(enclosingLambda, getAST(), fRewriter); Block blockBody = (Block) fRewriter.get(enclosingLambda, LambdaExpression.BODY_PROPERTY); ASTNode statementInBlock = (ASTNode) blockBody.statements().get(0); fRewriter.replace(statementInBlock, replacementNode, null); statements.insertLast(statementInBlock, null); return; } if (expressionStatement != null) { statements.insertLast(expressionStatement, null); } else { if (!selectedNodeRemoved) statements.insertLast(fRewriter.createMoveTarget(selectedNode), null); } fRewriter.replace(selectedNode, replacementNode, null); } else { ListRewrite source = fRewriter.getListRewrite( fSelectedNodes[0].getParent(), (ChildListPropertyDescriptor) fSelectedNodes[0].getLocationInParent()); ASTNode toMove = source.createMoveTarget( fSelectedNodes[0], fSelectedNodes[fSelectedNodes.length - 1], replacementNode, null); statements.insertLast(toMove, null); } }