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

Example 66 with IVariableBinding

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

the class MissingReturnTypeCorrectionProposal method computeProposals.

protected Expression computeProposals(AST ast, ITypeBinding returnBinding, int returnOffset, CompilationUnit root, Expression result) {
    ScopeAnalyzer analyzer = new ScopeAnalyzer(root);
    IBinding[] bindings = analyzer.getDeclarationsInScope(returnOffset, ScopeAnalyzer.VARIABLES | ScopeAnalyzer.CHECK_VISIBILITY);
    for (int i = 0; i < bindings.length; i++) {
        IVariableBinding curr = (IVariableBinding) bindings[i];
        ITypeBinding type = curr.getType();
        if (type != null && type.isAssignmentCompatible(returnBinding) && testModifier(curr)) {
            if (result == null) {
                result = ast.newSimpleName(curr.getName());
            }
            addLinkedPositionProposal(RETURN_EXPRESSION_KEY, curr.getName(), null);
        }
    }
    return result;
}

Example 67 with IVariableBinding

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

the class MissingReturnTypeInLambdaCorrectionProposal method computeProposals.

@Override
protected Expression computeProposals(AST ast, ITypeBinding returnBinding, int returnOffset, CompilationUnit root, Expression result) {
    ScopeAnalyzer analyzer = new ScopeAnalyzer(root);
    IBinding[] bindings = analyzer.getDeclarationsInScope(returnOffset, ScopeAnalyzer.VARIABLES | ScopeAnalyzer.CHECK_VISIBILITY);
    org.eclipse.jdt.core.dom.NodeFinder finder = new org.eclipse.jdt.core.dom.NodeFinder(root, returnOffset, 0);
    ASTNode varDeclFrag = ASTResolving.findAncestor(finder.getCoveringNode(), ASTNode.VARIABLE_DECLARATION_FRAGMENT);
    IVariableBinding varDeclFragBinding = null;
    if (varDeclFrag != null)
        varDeclFragBinding = ((VariableDeclarationFragment) varDeclFrag).resolveBinding();
    for (int i = 0; i < bindings.length; i++) {
        IVariableBinding curr = (IVariableBinding) bindings[i];
        ITypeBinding type = curr.getType();
        // Bindings are compared to make sure that a lambda does not return a variable which is yet to be initialised.
        if (type != null && type.isAssignmentCompatible(returnBinding) && testModifier(curr) && !Bindings.equals(curr, varDeclFragBinding)) {
            if (result == null) {
                result = ast.newSimpleName(curr.getName());
            }
            addLinkedPositionProposal(RETURN_EXPRESSION_KEY, curr.getName(), null);
        }
    }
    return result;
}

Example 68 with IVariableBinding

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

the class ConvertForLoopOperation method validateInitializers.

/*
	 * Must be one of:
	 * <ul>
	 * <li>int [result]= 0;</li>
	 * <li>int [result]= 0, [lengthBinding]= [arrayBinding].length;</li>
	 * <li>int , [result]= 0;</li>
	 * </ul>
	 */
private boolean validateInitializers(ForStatement statement) {
    List<Expression> initializers = statement.initializers();
    if (initializers.size() != 1)
        return false;
    Expression expression = initializers.get(0);
    if (!(expression instanceof VariableDeclarationExpression))
        return false;
    VariableDeclarationExpression declaration = (VariableDeclarationExpression) expression;
    ITypeBinding declarationBinding = declaration.resolveTypeBinding();
    if (declarationBinding == null)
        return false;
    if (!declarationBinding.isPrimitive())
        return false;
    if (!PrimitiveType.INT.toString().equals(declarationBinding.getQualifiedName()))
        return false;
    List<VariableDeclarationFragment> fragments = declaration.fragments();
    if (fragments.size() == 1) {
        IVariableBinding indexBinding = getIndexBindingFromFragment(fragments.get(0));
        if (indexBinding == null)
            return false;
        fIndexBinding = indexBinding;
        return true;
    } else if (fragments.size() == 2) {
        IVariableBinding indexBinding = getIndexBindingFromFragment(fragments.get(0));
        if (indexBinding == null) {
            indexBinding = getIndexBindingFromFragment(fragments.get(1));
            if (indexBinding == null)
                return false;
            if (!validateLengthFragment(fragments.get(0)))
                return false;
        } else {
            if (!validateLengthFragment(fragments.get(1)))
                return false;
        }
        fIndexBinding = indexBinding;
        return true;
    }
    return false;
}

Example 69 with IVariableBinding

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

the class ConvertIterableLoopOperation method satisfiesPreconditions.

/**
	 * Is this proposal applicable?
	 *
	 * @return A status with severity <code>IStatus.Error</code> if not
	 *         applicable
	 */
@Override
public final IStatus satisfiesPreconditions() {
    IStatus resultStatus = StatusInfo.OK_STATUS;
    if (JavaModelUtil.is50OrHigher(getJavaProject())) {
        resultStatus = checkExpressionCondition();
        if (resultStatus.getSeverity() == IStatus.ERROR)
            return resultStatus;
        List<Expression> updateExpressions = getForStatement().updaters();
        if (updateExpressions.size() == 1) {
            resultStatus = new StatusInfo(IStatus.WARNING, Messages.format(FixMessages.ConvertIterableLoopOperation_RemoveUpdateExpression_Warning, BasicElementLabels.getJavaCodeString(updateExpressions.get(0).toString())));
        } else if (updateExpressions.size() > 1) {
            resultStatus = new StatusInfo(IStatus.WARNING, FixMessages.ConvertIterableLoopOperation_RemoveUpdateExpressions_Warning);
        }
        for (final Iterator<Expression> outer = getForStatement().initializers().iterator(); outer.hasNext(); ) {
            final Expression initializer = outer.next();
            if (initializer instanceof VariableDeclarationExpression) {
                final VariableDeclarationExpression declaration = (VariableDeclarationExpression) initializer;
                List<VariableDeclarationFragment> fragments = declaration.fragments();
                if (fragments.size() != 1) {
                    //$NON-NLS-1$
                    return new StatusInfo(IStatus.ERROR, "");
                } else {
                    final VariableDeclarationFragment fragment = fragments.get(0);
                    fragment.accept(new ASTVisitor() {

                        @Override
                        public final boolean visit(final MethodInvocation node) {
                            final IMethodBinding binding = node.resolveMethodBinding();
                            if (binding != null) {
                                final ITypeBinding type = binding.getReturnType();
                                if (type != null) {
                                    final String qualified = type.getQualifiedName();
                                    if (qualified.startsWith("java.util.Enumeration<") || qualified.startsWith("java.util.Iterator<")) {
                                        //$NON-NLS-1$ //$NON-NLS-2$
                                        final Expression qualifier = node.getExpression();
                                        if (qualifier != null) {
                                            final ITypeBinding resolved = qualifier.resolveTypeBinding();
                                            if (resolved != null) {
                                                //$NON-NLS-1$
                                                final ITypeBinding iterable = getSuperType(resolved, "java.lang.Iterable");
                                                if (iterable != null) {
                                                    fExpression = qualifier;
                                                    fIterable = resolved;
                                                }
                                            }
                                        } else {
                                            final ITypeBinding declaring = binding.getDeclaringClass();
                                            if (declaring != null) {
                                                //$NON-NLS-1$
                                                final ITypeBinding superBinding = getSuperType(declaring, "java.lang.Iterable");
                                                if (superBinding != null) {
                                                    fIterable = superBinding;
                                                    fThis = true;
                                                }
                                            }
                                        }
                                    }
                                }
                            }
                            return true;
                        }

                        @Override
                        public final boolean visit(final VariableDeclarationFragment node) {
                            final IVariableBinding binding = node.resolveBinding();
                            if (binding != null) {
                                final ITypeBinding type = binding.getType();
                                if (type != null) {
                                    //$NON-NLS-1$
                                    ITypeBinding iterator = getSuperType(type, "java.util.Iterator");
                                    if (iterator != null)
                                        fIteratorVariable = binding;
                                    else {
                                        //$NON-NLS-1$
                                        iterator = getSuperType(type, "java.util.Enumeration");
                                        if (iterator != null)
                                            fIteratorVariable = binding;
                                    }
                                }
                            }
                            return true;
                        }
                    });
                }
            }
        }
        final Statement statement = getForStatement().getBody();
        final boolean[] otherInvocationThenNext = new boolean[] { false };
        final int[] nextInvocationCount = new int[] { 0 };
        if (statement != null && fIteratorVariable != null) {
            final ITypeBinding elementType = getElementType(fIteratorVariable.getType());
            statement.accept(new ASTVisitor() {

                @Override
                public boolean visit(SimpleName node) {
                    IBinding nodeBinding = node.resolveBinding();
                    if (fElementVariable != null && fElementVariable.equals(nodeBinding)) {
                        fMakeFinal = false;
                    }
                    if (nodeBinding == fIteratorVariable) {
                        if (node.getLocationInParent() == MethodInvocation.EXPRESSION_PROPERTY) {
                            MethodInvocation invocation = (MethodInvocation) node.getParent();
                            String name = invocation.getName().getIdentifier();
                            if (name.equals("next") || name.equals("nextElement")) {
                                //$NON-NLS-1$ //$NON-NLS-2$
                                nextInvocationCount[0]++;
                                Expression left = null;
                                if (invocation.getLocationInParent() == Assignment.RIGHT_HAND_SIDE_PROPERTY) {
                                    left = ((Assignment) invocation.getParent()).getLeftHandSide();
                                } else if (invocation.getLocationInParent() == VariableDeclarationFragment.INITIALIZER_PROPERTY) {
                                    left = ((VariableDeclarationFragment) invocation.getParent()).getName();
                                }
                                return visitElementVariable(left);
                            }
                        }
                        otherInvocationThenNext[0] = true;
                    }
                    return true;
                }

                private boolean visitElementVariable(final Expression node) {
                    if (node != null) {
                        final ITypeBinding binding = node.resolveTypeBinding();
                        if (binding != null && elementType.equals(binding)) {
                            if (node instanceof Name) {
                                final Name name = (Name) node;
                                final IBinding result = name.resolveBinding();
                                if (result != null) {
                                    fOccurrences.add(node);
                                    fElementVariable = result;
                                    return false;
                                }
                            } else if (node instanceof FieldAccess) {
                                final FieldAccess access = (FieldAccess) node;
                                final IBinding result = access.resolveFieldBinding();
                                if (result != null) {
                                    fOccurrences.add(node);
                                    fElementVariable = result;
                                    return false;
                                }
                            }
                        }
                    }
                    return true;
                }
            });
            if (otherInvocationThenNext[0])
                return ERROR_STATUS;
            if (nextInvocationCount[0] > 1)
                return ERROR_STATUS;
            if (fElementVariable != null) {
                statement.accept(new ASTVisitor() {

                    @Override
                    public final boolean visit(final VariableDeclarationFragment node) {
                        if (node.getInitializer() instanceof NullLiteral) {
                            SimpleName name = node.getName();
                            if (elementType.equals(name.resolveTypeBinding()) && fElementVariable.equals(name.resolveBinding())) {
                                fOccurrences.add(name);
                            }
                        }
                        return true;
                    }
                });
            }
        }
        final ASTNode root = getForStatement().getRoot();
        if (root != null) {
            root.accept(new ASTVisitor() {

                @Override
                public final boolean visit(final ForStatement node) {
                    return false;
                }

                @Override
                public final boolean visit(final SimpleName node) {
                    final IBinding binding = node.resolveBinding();
                    if (binding != null && binding.equals(fElementVariable))
                        fAssigned = true;
                    return false;
                }
            });
        }
    }
    if ((fExpression != null || fThis) && fIterable != null && fIteratorVariable != null && !fAssigned) {
        return resultStatus;
    } else {
        return ERROR_STATUS;
    }
}

Example 70 with IVariableBinding

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

the class AddUnimplementedMethodsOperation method getUnimplementedMethods.

private IMethodBinding[] getUnimplementedMethods(ASTNode typeNode) {
    ITypeBinding binding = null;
    boolean implementAbstractsOfInput = false;
    if (typeNode instanceof AnonymousClassDeclaration) {
        AnonymousClassDeclaration decl = (AnonymousClassDeclaration) typeNode;
        binding = decl.resolveBinding();
    } else if (typeNode instanceof AbstractTypeDeclaration) {
        AbstractTypeDeclaration decl = (AbstractTypeDeclaration) typeNode;
        binding = decl.resolveBinding();
    } else if (typeNode instanceof EnumConstantDeclaration) {
        EnumConstantDeclaration enumConstantDeclaration = (EnumConstantDeclaration) typeNode;
        if (enumConstantDeclaration.getAnonymousClassDeclaration() != null) {
            binding = enumConstantDeclaration.getAnonymousClassDeclaration().resolveBinding();
        } else {
            IVariableBinding varBinding = enumConstantDeclaration.resolveVariable();
            if (varBinding != null) {
                binding = varBinding.getDeclaringClass();
                implementAbstractsOfInput = true;
            }
        }
    }
    if (binding == null)
        return new IMethodBinding[0];
    IMethodBinding[] unimplementedMethods = StubUtility2.getUnimplementedMethods(binding, implementAbstractsOfInput);
    Arrays.sort(unimplementedMethods, new MethodsSourcePositionComparator(binding));
    return unimplementedMethods;
}