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

Example 71 with VariableDeclarationFragment

use of org.eclipse.jdt.core.dom.VariableDeclarationFragment 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 72 with VariableDeclarationFragment

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

the class ConvertIterableLoopOperation method checkIteratorCondition.

private IStatus checkIteratorCondition() {
    List<Expression> initializers = getForStatement().initializers();
    if (initializers.size() != 1)
        return SEMANTIC_CHANGE_WARNING_STATUS;
    Expression expression = initializers.get(0);
    if (!(expression instanceof VariableDeclarationExpression))
        return SEMANTIC_CHANGE_WARNING_STATUS;
    VariableDeclarationExpression declaration = (VariableDeclarationExpression) expression;
    List<VariableDeclarationFragment> variableDeclarationFragments = declaration.fragments();
    if (variableDeclarationFragments.size() != 1)
        return SEMANTIC_CHANGE_WARNING_STATUS;
    VariableDeclarationFragment declarationFragment = variableDeclarationFragments.get(0);
    Expression initializer = declarationFragment.getInitializer();
    if (!(initializer instanceof MethodInvocation))
        return SEMANTIC_CHANGE_WARNING_STATUS;
    MethodInvocation methodInvocation = (MethodInvocation) initializer;
    String methodName = methodInvocation.getName().getIdentifier();
    if (//$NON-NLS-1$
    !"iterator".equals(methodName) || methodInvocation.arguments().size() != 0)
        return SEMANTIC_CHANGE_WARNING_STATUS;
    return StatusInfo.OK_STATUS;
}

Example 73 with VariableDeclarationFragment

use of org.eclipse.jdt.core.dom.VariableDeclarationFragment 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 74 with VariableDeclarationFragment

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

the class ConvertLoopOperation method getUsedVariableNames.

protected String[] getUsedVariableNames() {
    final List<String> results = new ArrayList<String>();
    ForStatement forStatement = getForStatement();
    CompilationUnit root = (CompilationUnit) forStatement.getRoot();
    Collection<String> variableNames = new ScopeAnalyzer(root).getUsedVariableNames(forStatement.getStartPosition(), forStatement.getLength());
    results.addAll(variableNames);
    forStatement.accept(new GenericVisitor() {

        @Override
        public boolean visit(SingleVariableDeclaration node) {
            results.add(node.getName().getIdentifier());
            return super.visit(node);
        }

        @Override
        public boolean visit(VariableDeclarationFragment fragment) {
            results.add(fragment.getName().getIdentifier());
            return super.visit(fragment);
        }
    });
    results.addAll(Arrays.asList(fUsedNames));
    return results.toArray(new String[results.size()]);
}

Example 75 with VariableDeclarationFragment

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

the class AbstractSerialVersionOperation method rewriteAST.

/**
	 * {@inheritDoc}
	 */
@Override
public void rewriteAST(CompilationUnitRewrite cuRewrite, LinkedProposalModel positionGroups) throws CoreException {
    final ASTRewrite rewrite = cuRewrite.getASTRewrite();
    VariableDeclarationFragment fragment = null;
    for (int i = 0; i < fNodes.length; i++) {
        final ASTNode node = fNodes[i];
        final AST ast = node.getAST();
        fragment = ast.newVariableDeclarationFragment();
        fragment.setName(ast.newSimpleName(NAME_FIELD));
        final FieldDeclaration declaration = ast.newFieldDeclaration(fragment);
        declaration.setType(ast.newPrimitiveType(PrimitiveType.LONG));
        declaration.modifiers().addAll(ASTNodeFactory.newModifiers(ast, Modifier.PRIVATE | Modifier.STATIC | Modifier.FINAL));
        if (!addInitializer(fragment, node))
            continue;
        if (fragment.getInitializer() != null) {
            final TextEditGroup editGroup = createTextEditGroup(FixMessages.SerialVersion_group_description, cuRewrite);
            if (node instanceof AbstractTypeDeclaration)
                rewrite.getListRewrite(node, ((AbstractTypeDeclaration) node).getBodyDeclarationsProperty()).insertAt(declaration, 0, editGroup);
            else if (node instanceof AnonymousClassDeclaration)
                rewrite.getListRewrite(node, AnonymousClassDeclaration.BODY_DECLARATIONS_PROPERTY).insertAt(declaration, 0, editGroup);
            else if (node instanceof ParameterizedType) {
                final ParameterizedType type = (ParameterizedType) node;
                final ASTNode parent = type.getParent();
                if (parent instanceof ClassInstanceCreation) {
                    final ClassInstanceCreation creation = (ClassInstanceCreation) parent;
                    final AnonymousClassDeclaration anonymous = creation.getAnonymousClassDeclaration();
                    if (anonymous != null)
                        rewrite.getListRewrite(anonymous, AnonymousClassDeclaration.BODY_DECLARATIONS_PROPERTY).insertAt(declaration, 0, editGroup);
                }
            } else
                Assert.isTrue(false);
            addLinkedPositions(rewrite, fragment, positionGroups);
        }
        final String comment = CodeGeneration.getFieldComment(fUnit, declaration.getType().toString(), NAME_FIELD, StubUtility.getLineDelimiterUsed(fUnit));
        if (comment != null && comment.length() > 0) {
            final Javadoc doc = (Javadoc) rewrite.createStringPlaceholder(comment, ASTNode.JAVADOC);
            declaration.setJavadoc(doc);
        }
    }
    if (fragment == null)
        return;
    positionGroups.setEndPosition(rewrite.track(fragment));
}