Examples with IVariableBinding org.eclipse.jdt.core.dom.IVariableBinding used on opensource projects

Example 1 with IVariableBinding

use of org.eclipse.jdt.core.dom.IVariableBinding in project che by eclipse.

the class AddImportsOperation method evaluateEdits.

private TextEdit evaluateEdits(CompilationUnit root, ImportRewrite importRewrite, int offset, int length, IProgressMonitor monitor) throws JavaModelException {
    SimpleName nameNode = null;
    if (root != null) {
        // got an AST
        ASTNode node = NodeFinder.perform(root, offset, length);
        if (node instanceof MarkerAnnotation) {
            node = ((Annotation) node).getTypeName();
        }
        if (node instanceof QualifiedName) {
            nameNode = ((QualifiedName) node).getName();
        } else if (node instanceof SimpleName) {
            nameNode = (SimpleName) node;
        }
    }
    String name, simpleName, containerName;
    int qualifierStart;
    int simpleNameStart;
    if (nameNode != null) {
        simpleName = nameNode.getIdentifier();
        simpleNameStart = nameNode.getStartPosition();
        if (nameNode.getLocationInParent() == QualifiedName.NAME_PROPERTY) {
            Name qualifier = ((QualifiedName) nameNode.getParent()).getQualifier();
            containerName = qualifier.getFullyQualifiedName();
            name = JavaModelUtil.concatenateName(containerName, simpleName);
            qualifierStart = qualifier.getStartPosition();
        } else if (nameNode.getLocationInParent() == NameQualifiedType.NAME_PROPERTY) {
            NameQualifiedType nameQualifiedType = (NameQualifiedType) nameNode.getParent();
            Name qualifier = nameQualifiedType.getQualifier();
            containerName = qualifier.getFullyQualifiedName();
            name = JavaModelUtil.concatenateName(containerName, simpleName);
            qualifierStart = qualifier.getStartPosition();
            List<Annotation> annotations = nameQualifiedType.annotations();
            if (!annotations.isEmpty()) {
                // don't remove annotations
                simpleNameStart = annotations.get(0).getStartPosition();
            }
        } else if (nameNode.getLocationInParent() == MethodInvocation.NAME_PROPERTY) {
            ASTNode qualifier = ((MethodInvocation) nameNode.getParent()).getExpression();
            if (qualifier instanceof Name) {
                containerName = ASTNodes.asString(qualifier);
                name = JavaModelUtil.concatenateName(containerName, simpleName);
                qualifierStart = qualifier.getStartPosition();
            } else {
                return null;
            }
        } else {
            //$NON-NLS-1$
            containerName = "";
            name = simpleName;
            qualifierStart = simpleNameStart;
        }
        IBinding binding = nameNode.resolveBinding();
        if (binding != null && !binding.isRecovered()) {
            if (binding instanceof ITypeBinding) {
                ITypeBinding typeBinding = ((ITypeBinding) binding).getTypeDeclaration();
                String qualifiedBindingName = typeBinding.getQualifiedName();
                if (containerName.length() > 0 && !qualifiedBindingName.equals(name)) {
                    return null;
                }
                ImportRewriteContext context = new ContextSensitiveImportRewriteContext(root, qualifierStart, importRewrite);
                String res = importRewrite.addImport(typeBinding, context);
                if (containerName.length() > 0 && !res.equals(simpleName)) {
                    // adding import failed
                    fStatus = JavaUIStatus.createError(IStatus.ERROR, CodeGenerationMessages.AddImportsOperation_error_importclash, null);
                    return null;
                }
                if (containerName.length() == 0 && res.equals(simpleName)) {
                    // no change necessary
                    return null;
                }
                return new ReplaceEdit(qualifierStart, simpleNameStart - qualifierStart, new String());
            } else if (JavaModelUtil.is50OrHigher(fCompilationUnit.getJavaProject()) && (binding instanceof IVariableBinding || binding instanceof IMethodBinding)) {
                boolean isField = binding instanceof IVariableBinding;
                ITypeBinding declaringClass = isField ? ((IVariableBinding) binding).getDeclaringClass() : ((IMethodBinding) binding).getDeclaringClass();
                if (declaringClass == null) {
                    // variableBinding.getDeclaringClass() is null for array.length
                    return null;
                }
                if (Modifier.isStatic(binding.getModifiers())) {
                    if (containerName.length() > 0) {
                        if (containerName.equals(declaringClass.getName()) || containerName.equals(declaringClass.getQualifiedName())) {
                            ASTNode node = nameNode.getParent();
                            boolean isDirectlyAccessible = false;
                            while (node != null) {
                                if (isTypeDeclarationSubTypeCompatible(node, declaringClass)) {
                                    isDirectlyAccessible = true;
                                    break;
                                }
                                node = node.getParent();
                            }
                            if (!isDirectlyAccessible) {
                                if (Modifier.isPrivate(declaringClass.getModifiers())) {
                                    fStatus = JavaUIStatus.createError(IStatus.ERROR, Messages.format(CodeGenerationMessages.AddImportsOperation_error_not_visible_class, BasicElementLabels.getJavaElementName(declaringClass.getName())), null);
                                    return null;
                                }
                                String res = importRewrite.addStaticImport(declaringClass.getQualifiedName(), binding.getName(), isField);
                                if (!res.equals(simpleName)) {
                                    // adding import failed
                                    return null;
                                }
                            }
                            //$NON-NLS-1$
                            return new ReplaceEdit(qualifierStart, simpleNameStart - qualifierStart, "");
                        }
                    }
                }
                // no static imports for packages
                return null;
            } else {
                return null;
            }
        }
        if (binding != null && binding.getKind() != IBinding.TYPE) {
            // recovered binding
            return null;
        }
    } else {
        IBuffer buffer = fCompilationUnit.getBuffer();
        qualifierStart = getNameStart(buffer, offset);
        int nameEnd = getNameEnd(buffer, offset + length);
        int len = nameEnd - qualifierStart;
        name = buffer.getText(qualifierStart, len).trim();
        if (name.length() == 0) {
            return null;
        }
        simpleName = Signature.getSimpleName(name);
        containerName = Signature.getQualifier(name);
        IJavaProject javaProject = fCompilationUnit.getJavaProject();
        if (simpleName.length() == 0 || JavaConventionsUtil.validateJavaTypeName(simpleName, javaProject).matches(IStatus.ERROR) || (containerName.length() > 0 && JavaConventionsUtil.validateJavaTypeName(containerName, javaProject).matches(IStatus.ERROR))) {
            fStatus = JavaUIStatus.createError(IStatus.ERROR, CodeGenerationMessages.AddImportsOperation_error_invalid_selection, null);
            return null;
        }
        simpleNameStart = getSimpleNameStart(buffer, qualifierStart, containerName);
        int res = importRewrite.getDefaultImportRewriteContext().findInContext(containerName, simpleName, ImportRewriteContext.KIND_TYPE);
        if (res == ImportRewriteContext.RES_NAME_CONFLICT) {
            fStatus = JavaUIStatus.createError(IStatus.ERROR, CodeGenerationMessages.AddImportsOperation_error_importclash, null);
            return null;
        } else if (res == ImportRewriteContext.RES_NAME_FOUND) {
            //$NON-NLS-1$
            return new ReplaceEdit(qualifierStart, simpleNameStart - qualifierStart, "");
        }
    }
    IJavaSearchScope searchScope = SearchEngine.createJavaSearchScope(new IJavaElement[] { fCompilationUnit.getJavaProject() });
    TypeNameMatch[] types = findAllTypes(simpleName, searchScope, nameNode, new SubProgressMonitor(monitor, 1));
    if (types.length == 0) {
        fStatus = JavaUIStatus.createError(IStatus.ERROR, Messages.format(CodeGenerationMessages.AddImportsOperation_error_notresolved_message, BasicElementLabels.getJavaElementName(simpleName)), null);
        return null;
    }
    if (monitor.isCanceled()) {
        throw new OperationCanceledException();
    }
    TypeNameMatch chosen;
    if (types.length > 1 && fQuery != null) {
        chosen = fQuery.chooseImport(types, containerName);
        if (chosen == null) {
            throw new OperationCanceledException();
        }
    } else {
        chosen = types[0];
    }
    ImportRewriteContext context = root == null ? null : new ContextSensitiveImportRewriteContext(root, simpleNameStart, importRewrite);
    importRewrite.addImport(chosen.getFullyQualifiedName(), context);
    //$NON-NLS-1$
    return new ReplaceEdit(qualifierStart, simpleNameStart - qualifierStart, "");
}

Example 2 with IVariableBinding

use of org.eclipse.jdt.core.dom.IVariableBinding in project che by eclipse.

the class UnresolvedElementsSubProcessor method getExpressionBaseName.

private static String getExpressionBaseName(Expression expr) {
    IBinding argBinding = Bindings.resolveExpressionBinding(expr, true);
    if (argBinding instanceof IVariableBinding) {
        IJavaProject project = null;
        ASTNode root = expr.getRoot();
        if (root instanceof CompilationUnit) {
            ITypeRoot typeRoot = ((CompilationUnit) root).getTypeRoot();
            if (typeRoot != null)
                project = typeRoot.getJavaProject();
        }
        return StubUtility.getBaseName((IVariableBinding) argBinding, project);
    }
    if (expr instanceof SimpleName)
        return ((SimpleName) expr).getIdentifier();
    return null;
}

Example 3 with IVariableBinding

use of org.eclipse.jdt.core.dom.IVariableBinding in project che by eclipse.

the class TypeMismatchSubProcessor method addChangeSenderTypeProposals.

public static void addChangeSenderTypeProposals(IInvocationContext context, Expression nodeToCast, ITypeBinding castTypeBinding, boolean isAssignedNode, int relevance, Collection<ICommandAccess> proposals) throws JavaModelException {
    IBinding callerBinding = Bindings.resolveExpressionBinding(nodeToCast, false);
    ICompilationUnit cu = context.getCompilationUnit();
    CompilationUnit astRoot = context.getASTRoot();
    ICompilationUnit targetCu = null;
    ITypeBinding declaringType = null;
    IBinding callerBindingDecl = callerBinding;
    if (callerBinding instanceof IVariableBinding) {
        IVariableBinding variableBinding = (IVariableBinding) callerBinding;
        if (variableBinding.isEnumConstant()) {
            return;
        }
        if (!variableBinding.isField()) {
            targetCu = cu;
        } else {
            callerBindingDecl = variableBinding.getVariableDeclaration();
            ITypeBinding declaringClass = variableBinding.getDeclaringClass();
            if (declaringClass == null) {
                // array length
                return;
            }
            declaringType = declaringClass.getTypeDeclaration();
        }
    } else if (callerBinding instanceof IMethodBinding) {
        IMethodBinding methodBinding = (IMethodBinding) callerBinding;
        if (!methodBinding.isConstructor()) {
            declaringType = methodBinding.getDeclaringClass().getTypeDeclaration();
            callerBindingDecl = methodBinding.getMethodDeclaration();
        }
    } else if (callerBinding instanceof ITypeBinding && nodeToCast.getLocationInParent() == SingleMemberAnnotation.TYPE_NAME_PROPERTY) {
        declaringType = (ITypeBinding) callerBinding;
        //$NON-NLS-1$
        callerBindingDecl = Bindings.findMethodInType(declaringType, "value", (String[]) null);
        if (callerBindingDecl == null) {
            return;
        }
    }
    if (declaringType != null && declaringType.isFromSource()) {
        targetCu = ASTResolving.findCompilationUnitForBinding(cu, astRoot, declaringType);
    }
    if (targetCu != null && ASTResolving.isUseableTypeInContext(castTypeBinding, callerBindingDecl, false)) {
        proposals.add(new TypeChangeCorrectionProposal(targetCu, callerBindingDecl, astRoot, castTypeBinding, isAssignedNode, relevance));
    }
    // add interface to resulting type
    if (!isAssignedNode) {
        ITypeBinding nodeType = nodeToCast.resolveTypeBinding();
        if (castTypeBinding.isInterface() && nodeType != null && nodeType.isClass() && !nodeType.isAnonymous() && nodeType.isFromSource()) {
            ITypeBinding typeDecl = nodeType.getTypeDeclaration();
            ICompilationUnit nodeCu = ASTResolving.findCompilationUnitForBinding(cu, astRoot, typeDecl);
            if (nodeCu != null && ASTResolving.isUseableTypeInContext(castTypeBinding, typeDecl, true)) {
                proposals.add(new ImplementInterfaceProposal(nodeCu, typeDecl, astRoot, castTypeBinding, relevance - 1));
            }
        }
    }
}

Example 4 with IVariableBinding

use of org.eclipse.jdt.core.dom.IVariableBinding in project che by eclipse.

the class UnresolvedElementsSubProcessor method addSimilarVariableProposals.

private static void addSimilarVariableProposals(ICompilationUnit cu, CompilationUnit astRoot, ITypeBinding binding, IVariableBinding resolvedField, SimpleName node, boolean isWriteAccess, Collection<ICommandAccess> proposals) {
    int kind = ScopeAnalyzer.VARIABLES | ScopeAnalyzer.CHECK_VISIBILITY;
    if (!isWriteAccess) {
        // also try to find similar methods
        kind |= ScopeAnalyzer.METHODS;
    }
    IBinding[] varsAndMethodsInScope = (new ScopeAnalyzer(astRoot)).getDeclarationsInScope(node, kind);
    if (varsAndMethodsInScope.length > 0) {
        // avoid corrections like int i= i;
        String otherNameInAssign = null;
        // help with x.getString() -> y.getString()
        String methodSenderName = null;
        String fieldSenderName = null;
        ASTNode parent = node.getParent();
        switch(parent.getNodeType()) {
            case ASTNode.VARIABLE_DECLARATION_FRAGMENT:
                // node must be initializer
                otherNameInAssign = ((VariableDeclarationFragment) parent).getName().getIdentifier();
                break;
            case ASTNode.ASSIGNMENT:
                Assignment assignment = (Assignment) parent;
                if (isWriteAccess && assignment.getRightHandSide() instanceof SimpleName) {
                    otherNameInAssign = ((SimpleName) assignment.getRightHandSide()).getIdentifier();
                } else if (!isWriteAccess && assignment.getLeftHandSide() instanceof SimpleName) {
                    otherNameInAssign = ((SimpleName) assignment.getLeftHandSide()).getIdentifier();
                }
                break;
            case ASTNode.METHOD_INVOCATION:
                MethodInvocation inv = (MethodInvocation) parent;
                if (inv.getExpression() == node) {
                    methodSenderName = inv.getName().getIdentifier();
                }
                break;
            case ASTNode.QUALIFIED_NAME:
                QualifiedName qualName = (QualifiedName) parent;
                if (qualName.getQualifier() == node) {
                    fieldSenderName = qualName.getName().getIdentifier();
                }
                break;
        }
        ITypeBinding guessedType = ASTResolving.guessBindingForReference(node);
        //$NON-NLS-1$
        ITypeBinding objectBinding = astRoot.getAST().resolveWellKnownType("java.lang.Object");
        String identifier = node.getIdentifier();
        boolean isInStaticContext = ASTResolving.isInStaticContext(node);
        ArrayList<CUCorrectionProposal> newProposals = new ArrayList<CUCorrectionProposal>(51);
        loop: for (int i = 0; i < varsAndMethodsInScope.length && newProposals.size() <= 50; i++) {
            IBinding varOrMeth = varsAndMethodsInScope[i];
            if (varOrMeth instanceof IVariableBinding) {
                IVariableBinding curr = (IVariableBinding) varOrMeth;
                String currName = curr.getName();
                if (currName.equals(otherNameInAssign)) {
                    continue loop;
                }
                if (resolvedField != null && Bindings.equals(resolvedField, curr)) {
                    continue loop;
                }
                boolean isFinal = Modifier.isFinal(curr.getModifiers());
                if (isFinal && curr.isField() && isWriteAccess) {
                    continue loop;
                }
                if (isInStaticContext && !Modifier.isStatic(curr.getModifiers()) && curr.isField()) {
                    continue loop;
                }
                int relevance = IProposalRelevance.SIMILAR_VARIABLE_PROPOSAL;
                if (NameMatcher.isSimilarName(currName, identifier)) {
                    // variable with a similar name than the unresolved variable
                    relevance += 3;
                }
                if (currName.equalsIgnoreCase(identifier)) {
                    relevance += 5;
                }
                ITypeBinding varType = curr.getType();
                if (varType != null) {
                    if (guessedType != null && guessedType != objectBinding) {
                        // variable type is compatible with the guessed type
                        if (!isWriteAccess && canAssign(varType, guessedType) || isWriteAccess && canAssign(guessedType, varType)) {
                            // unresolved variable can be assign to this variable
                            relevance += 2;
                        }
                    }
                    if (methodSenderName != null && hasMethodWithName(varType, methodSenderName)) {
                        relevance += 2;
                    }
                    if (fieldSenderName != null && hasFieldWithName(varType, fieldSenderName)) {
                        relevance += 2;
                    }
                }
                if (relevance > 0) {
                    String label = Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_changevariable_description, BasicElementLabels.getJavaElementName(currName));
                    newProposals.add(new RenameNodeCorrectionProposal(label, cu, node.getStartPosition(), node.getLength(), currName, relevance));
                }
            } else if (varOrMeth instanceof IMethodBinding) {
                IMethodBinding curr = (IMethodBinding) varOrMeth;
                if (!curr.isConstructor() && guessedType != null && canAssign(curr.getReturnType(), guessedType)) {
                    if (NameMatcher.isSimilarName(curr.getName(), identifier)) {
                        AST ast = astRoot.getAST();
                        ASTRewrite rewrite = ASTRewrite.create(ast);
                        String label = Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_changetomethod_description, ASTResolving.getMethodSignature(curr));
                        Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
                        LinkedCorrectionProposal proposal = new LinkedCorrectionProposal(label, cu, rewrite, IProposalRelevance.CHANGE_TO_METHOD, image);
                        newProposals.add(proposal);
                        MethodInvocation newInv = ast.newMethodInvocation();
                        newInv.setName(ast.newSimpleName(curr.getName()));
                        ITypeBinding[] parameterTypes = curr.getParameterTypes();
                        for (int k = 0; k < parameterTypes.length; k++) {
                            ASTNode arg = ASTNodeFactory.newDefaultExpression(ast, parameterTypes[k]);
                            newInv.arguments().add(arg);
                            proposal.addLinkedPosition(rewrite.track(arg), false, null);
                        }
                        rewrite.replace(node, newInv, null);
                    }
                }
            }
        }
        if (newProposals.size() <= 50)
            proposals.addAll(newProposals);
    }
    if (binding != null && binding.isArray()) {
        //$NON-NLS-1$
        String idLength = "length";
        String label = Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_changevariable_description, idLength);
        proposals.add(new RenameNodeCorrectionProposal(label, cu, node.getStartPosition(), node.getLength(), idLength, IProposalRelevance.CHANGE_VARIABLE));
    }
}

Example 5 with IVariableBinding

use of org.eclipse.jdt.core.dom.IVariableBinding in project che by eclipse.

the class UnresolvedElementsSubProcessor method hasMethodWithName.

private static boolean hasMethodWithName(ITypeBinding typeBinding, String name) {
    IVariableBinding[] fields = typeBinding.getDeclaredFields();
    for (int i = 0; i < fields.length; i++) {
        if (fields[i].getName().equals(name)) {
            return true;
        }
    }
    ITypeBinding superclass = typeBinding.getSuperclass();
    if (superclass != null) {
        return hasMethodWithName(superclass, name);
    }
    return false;
}