Examples with VariableReferenceNode org.ballerinalang.plugins.idea.psi.VariableReferenceNode used on opensource projects

Example 1 with VariableReferenceNode

use of org.ballerinalang.plugins.idea.psi.VariableReferenceNode in project ballerina by ballerina-lang.

the class BallerinaPsiImplUtil method getType.

@Nullable
private static PsiElement getType(@NotNull AssignmentStatementNode assignmentStatementNode, @NotNull IdentifierPSINode identifier) {
    if (!BallerinaPsiImplUtil.isVarAssignmentStatement(assignmentStatementNode)) {
        return null;
    }
    ExpressionNode expressionNode = PsiTreeUtil.getChildOfType(assignmentStatementNode, ExpressionNode.class);
    if (expressionNode == null) {
        return null;
    }
    PsiElement expressionNodeFirstChild = expressionNode.getFirstChild();
    if (expressionNodeFirstChild instanceof VariableReferenceNode) {
        PsiElement typeNode = getTypeFromVariableReference(assignmentStatementNode, identifier, expressionNodeFirstChild);
        if (typeNode != null) {
            return typeNode;
        }
    } else if (expressionNodeFirstChild instanceof TypeCastNode) {
        int index = getVariableIndexFromVarAssignment(assignmentStatementNode, identifier);
        if (index == 0) {
            TypeNameNode typeNameNode = PsiTreeUtil.getChildOfType(expressionNodeFirstChild, TypeNameNode.class);
            if (typeNameNode == null) {
                return null;
            }
            return getType(typeNameNode, false);
        }
        StructDefinitionNode errorStruct = BallerinaPsiImplUtil.getErrorStruct(assignmentStatementNode, identifier, true, false);
        if (errorStruct == null) {
            return null;
        }
        return errorStruct.getNameIdentifier();
    } else if (expressionNodeFirstChild instanceof TypeConversionNode) {
        int index = getVariableIndexFromVarAssignment(assignmentStatementNode, identifier);
        if (index == 0) {
            TypeNameNode typeNameNode = PsiTreeUtil.getChildOfType(expressionNodeFirstChild, TypeNameNode.class);
            if (typeNameNode == null) {
                return null;
            }
            return getType(typeNameNode, false);
        }
        StructDefinitionNode errorStruct = BallerinaPsiImplUtil.getErrorStruct(assignmentStatementNode, identifier, false, true);
        if (errorStruct == null) {
            return null;
        }
        return errorStruct.getNameIdentifier();
    }
    PsiReference firstChildReference = expressionNodeFirstChild.findReferenceAt(expressionNodeFirstChild.getTextLength());
    if (firstChildReference == null) {
        return null;
    }
    PsiElement resolvedElement = firstChildReference.resolve();
    if (resolvedElement == null) {
        return null;
    }
    return getType(((IdentifierPSINode) resolvedElement));
}

Example 2 with VariableReferenceNode

use of org.ballerinalang.plugins.idea.psi.VariableReferenceNode in project ballerina by ballerina-lang.

the class BallerinaPsiImplUtil method getStructDefinition.

/**
 * Finds a {@link StructDefinitionNode} which corresponds to the provided {@link VariableReferenceNode}.
 *
 * @param variableReferenceNode   an variable reference node in the assignment statement node
 * @param assignmentStatementNode an assignment statement node
 * @param structReferenceNode     an identifier which is a var variable in the assignment node
 * @return
 */
private static StructDefinitionNode getStructDefinition(@NotNull VariableReferenceNode variableReferenceNode, @NotNull AssignmentStatementNode assignmentStatementNode, @NotNull IdentifierPSINode structReferenceNode) {
    InvocationNode invocationNode = PsiTreeUtil.getChildOfType(variableReferenceNode, InvocationNode.class);
    if (invocationNode != null) {
        AnyIdentifierNameNode anyIdentifierNameNode = PsiTreeUtil.getChildOfType(invocationNode, AnyIdentifierNameNode.class);
        if (anyIdentifierNameNode != null) {
            IdentifierPSINode identifier = PsiTreeUtil.getChildOfType(anyIdentifierNameNode, IdentifierPSINode.class);
            if (identifier != null) {
                PsiReference reference = identifier.findReferenceAt(identifier.getTextLength());
                if (reference == null) {
                    return null;
                }
                PsiElement resolvedElement = reference.resolve();
                if (resolvedElement == null) {
                    return null;
                }
                // Check whether the resolved element's parent is a connector definition.
                PsiElement definitionNode = resolvedElement.getParent();
                if (!(definitionNode instanceof ActionDefinitionNode)) {
                    return null;
                }
                return getStructDefinition(assignmentStatementNode, structReferenceNode, definitionNode);
            }
        }
    }
    // Get the first child.
    PsiElement node = variableReferenceNode.getFirstChild();
    // If te first child is a VariableReferenceNode, it can be a function invocation.
    if (node instanceof VariableReferenceNode) {
        // Check whether the node is a function invocation.
        boolean isFunctionInvocation = isFunctionInvocation((VariableReferenceNode) node);
        if (isFunctionInvocation) {
            // If it is a function invocation, the first child node will contain the function name.
            PsiElement functionName = node.getFirstChild();
            // We need to resolve the function name to the corresponding function definition.
            PsiReference reference = functionName.findReferenceAt(functionName.getTextLength());
            if (reference == null) {
                return null;
            }
            PsiElement resolvedFunctionIdentifier = reference.resolve();
            if (resolvedFunctionIdentifier == null) {
                return null;
            }
            // Check whether the resolved element's parent is a function definition.
            PsiElement definitionNode = resolvedFunctionIdentifier.getParent();
            if (!(definitionNode instanceof FunctionDefinitionNode)) {
                return null;
            }
            return getStructDefinition(assignmentStatementNode, structReferenceNode, definitionNode);
        }
    } else if (node instanceof NameReferenceNode) {
        // If the node is a NameReferenceNode, that means RHS contains a variable.
        PsiReference reference = node.findReferenceAt(node.getTextLength());
        if (reference == null) {
            return null;
        }
        // We resolve that variable to the definition.
        PsiElement resolvedDefinition = reference.resolve();
        if (resolvedDefinition == null || !(resolvedDefinition instanceof IdentifierPSINode)) {
            return null;
        }
        // Then recursively call the findStructDefinition method to get the correct definition.
        return findStructDefinition((IdentifierPSINode) resolvedDefinition);
    } else if (node instanceof FunctionInvocationNode) {
        FunctionReferenceNode functionReferenceNode = PsiTreeUtil.getChildOfType(node, FunctionReferenceNode.class);
        if (functionReferenceNode == null) {
            return null;
        }
        PsiReference reference = functionReferenceNode.findReferenceAt(functionReferenceNode.getTextLength());
        if (reference == null) {
            return null;
        }
        PsiElement resolvedDefinition = reference.resolve();
        if (resolvedDefinition == null || !(resolvedDefinition instanceof IdentifierPSINode)) {
            return null;
        }
        PsiElement definitionNode = resolvedDefinition.getParent();
        if (!(definitionNode instanceof FunctionDefinitionNode)) {
            return null;
        }
        return getStructDefinition(assignmentStatementNode, structReferenceNode, definitionNode);
    }
    return null;
}

Example 3 with VariableReferenceNode

use of org.ballerinalang.plugins.idea.psi.VariableReferenceNode in project ballerina by ballerina-lang.

the class FieldReference method resolve.

@Nullable
@Override
public PsiElement resolve() {
    // Get the current element.
    IdentifierPSINode identifier = getElement();
    // Get the parent element.
    PsiElement parent = identifier.getParent();
    PsiElement prevSibling;
    // resolve multi level structs. Eg: user.name.<caret>
    if (parent instanceof StatementNode) {
        // Get the previous element.
        PsiElement prevVisibleLeaf = PsiTreeUtil.prevVisibleLeaf(parent);
        if (prevVisibleLeaf == null) {
            return null;
        }
        // Previous leaf element should be "." if the references are correctly defined.
        if (!".".equals(prevVisibleLeaf.getText())) {
            return null;
        }
        // Get the prevSibling. This is used to resolve the current field.
        prevSibling = PsiTreeUtil.prevVisibleLeaf(prevVisibleLeaf);
        if (prevSibling == null) {
            return null;
        }
    } else if (parent instanceof NameReferenceNode) {
        prevSibling = PsiTreeUtil.prevVisibleLeaf(parent);
        if (prevSibling != null && ".".equals(prevSibling.getText())) {
            prevSibling = PsiTreeUtil.prevVisibleLeaf(prevSibling);
        }
    } else {
        PsiElement parentPrevSibling = parent.getPrevSibling();
        if (parentPrevSibling != null) {
            if (parentPrevSibling instanceof VariableReferenceNode) {
                PsiElement[] children = parentPrevSibling.getChildren();
                if (children.length <= 0) {
                    return null;
                }
                PsiElement firstChild = children[0].getFirstChild();
                if (firstChild == null) {
                    return null;
                }
                prevSibling = firstChild;
            } else {
                return null;
            }
        } else {
            // If the current statement is correctly resolved, that means all the fields are identified properly.
            // Get the prevSibling. This is used to resolve the current field.
            prevSibling = PsiTreeUtil.prevVisibleLeaf(parent);
        }
    }
    // If the prevSibling is null, we return from this method because we cannot resolve the element.
    if (prevSibling == null) {
        return null;
    }
    // We get the reference at end. This is because struct field access can be multiple levels deep.
    // Eg: user.name.first - If the current node is 'first', then the previous node will be 'user.name'. If
    // we get the reference at the beginning, we we get the reference for 'user'. But we want to resolve the
    // 'name' field first. That is why we get the reference at the end.
    PsiReference variableReference = prevSibling.findReferenceAt(prevSibling.getTextLength());
    if (variableReference == null) {
        return null;
    }
    // Resolve the reference. The resolved element can be an identifier of either a struct of a field
    // depending on the current node.
    // Eg: user.name.firstName - If the current node is 'name', resolved element will be a struct definition. if
    // the current element is 'firstName', then the resolved element will be a field definition.
    PsiElement resolvedElement = variableReference.resolve();
    if (resolvedElement == null || !(resolvedElement instanceof IdentifierPSINode)) {
        return null;
    }
    // Get the parent of the resolved element.
    PsiElement resolvedElementParent = resolvedElement.getParent();
    StructDefinitionNode structDefinitionNode = null;
    // Resolve the corresponding resolvedElementParent to get the struct definition.
    if (resolvedElementParent instanceof VariableDefinitionNode || resolvedElementParent instanceof CodeBlockParameterNode || resolvedElementParent instanceof ParameterNode) {
        // Resolve the Type of the VariableDefinitionNode to get the corresponding struct.
        // Eg: User user = {}
        // In here, "User" is resolved and struct identifier is returned.
        structDefinitionNode = BallerinaPsiImplUtil.resolveStructFromDefinitionNode(resolvedElementParent);
    } else if (resolvedElementParent instanceof FieldDefinitionNode) {
        // If the resolvedElementParent is of type FieldDefinitionNode, that means we need to resolve the type of
        // the field to get the struct definition.
        // Eg: user.name.firstName - In here, if we want to resolve the 'firstName' we will get the 'Name name;'
        // field. So we need to resolve the type of the field which is 'Name'. Then we will get the Name struct.
        // Then we need to get the 'firstName' field from that.
        structDefinitionNode = BallerinaPsiImplUtil.resolveTypeNodeStruct((resolvedElementParent));
    } else if (resolvedElementParent instanceof NameReferenceNode) {
        structDefinitionNode = BallerinaPsiImplUtil.findStructDefinition((IdentifierPSINode) resolvedElement);
    } else if (resolvedElementParent instanceof EnumDefinitionNode) {
        return ((EnumDefinitionNode) resolvedElementParent).resolve(identifier);
    }
    if (structDefinitionNode == null) {
        return null;
    }
    // Resolve the field and return the resolved element.
    return structDefinitionNode.resolve(identifier);
}

Example 4 with VariableReferenceNode

use of org.ballerinalang.plugins.idea.psi.VariableReferenceNode in project ballerina by ballerina-lang.

the class BallerinaParserDefinition method createElement.

@NotNull
public PsiElement createElement(ASTNode node) {
    IElementType elementType = node.getElementType();
    if (elementType instanceof TokenIElementType) {
        return new ANTLRPsiNode(node);
    }
    if (!(elementType instanceof RuleIElementType)) {
        return new ANTLRPsiNode(node);
    }
    RuleIElementType ruleElType = (RuleIElementType) elementType;
    switch(ruleElType.getRuleIndex()) {
        case BallerinaParser.RULE_functionDefinition:
            return new FunctionDefinitionNode(node);
        case BallerinaParser.RULE_callableUnitBody:
            return new CallableUnitBodyNode(node);
        case BallerinaParser.RULE_nameReference:
            return new NameReferenceNode(node);
        case BallerinaParser.RULE_variableReference:
            return new VariableReferenceNode(node);
        case BallerinaParser.RULE_variableDefinitionStatement:
            return new VariableDefinitionNode(node);
        case BallerinaParser.RULE_parameter:
            return new ParameterNode(node);
        case BallerinaParser.RULE_resourceDefinition:
            return new ResourceDefinitionNode(node);
        case BallerinaParser.RULE_packageName:
            return new PackageNameNode(node);
        case BallerinaParser.RULE_fullyQualifiedPackageName:
            return new FullyQualifiedPackageNameNode(node);
        case BallerinaParser.RULE_expressionList:
            return new ExpressionListNode(node);
        case BallerinaParser.RULE_expression:
            return new ExpressionNode(node);
        case BallerinaParser.RULE_functionInvocation:
            return new FunctionInvocationNode(node);
        case BallerinaParser.RULE_compilationUnit:
            return new CompilationUnitNode(node);
        case BallerinaParser.RULE_packageDeclaration:
            return new PackageDeclarationNode(node);
        case BallerinaParser.RULE_annotationAttachment:
            return new AnnotationAttachmentNode(node);
        case BallerinaParser.RULE_serviceBody:
            return new ServiceBodyNode(node);
        case BallerinaParser.RULE_importDeclaration:
            return new ImportDeclarationNode(node);
        case BallerinaParser.RULE_statement:
            return new StatementNode(node);
        case BallerinaParser.RULE_typeName:
            return new TypeNameNode(node);
        case BallerinaParser.RULE_constantDefinition:
            return new ConstantDefinitionNode(node);
        case BallerinaParser.RULE_structDefinition:
            return new StructDefinitionNode(node);
        case BallerinaParser.RULE_simpleLiteral:
            return new SimpleLiteralNode(node);
        case BallerinaParser.RULE_packageAlias:
            return new AliasNode(node);
        case BallerinaParser.RULE_parameterList:
            return new ParameterListNode(node);
        case BallerinaParser.RULE_fieldDefinition:
            return new FieldDefinitionNode(node);
        case BallerinaParser.RULE_parameterTypeNameList:
            return new ParameterTypeNameList(node);
        case BallerinaParser.RULE_parameterTypeName:
            return new ConnectorInitNode(node);
        case BallerinaParser.RULE_serviceDefinition:
            return new ServiceDefinitionNode(node);
        case BallerinaParser.RULE_valueTypeName:
            return new ValueTypeNameNode(node);
        case BallerinaParser.RULE_annotationDefinition:
            return new AnnotationAttributeValueNode(node);
        case BallerinaParser.RULE_structBody:
            return new StructBodyNode(node);
        case BallerinaParser.RULE_returnParameter:
            return new ReturnParameterNode(node);
        case BallerinaParser.RULE_attachmentPoint:
            return new AttachmentPointNode(node);
        case BallerinaParser.RULE_definition:
            return new DefinitionNode(node);
        case BallerinaParser.RULE_ifElseStatement:
            return new IfElseStatementNode(node);
        case BallerinaParser.RULE_assignmentStatement:
            return new AssignmentStatementNode(node);
        case BallerinaParser.RULE_variableReferenceList:
            return new VariableReferenceListNode(node);
        case BallerinaParser.RULE_recordLiteral:
            return new RecordLiteralNode(node);
        case BallerinaParser.RULE_globalVariableDefinition:
            return new GlobalVariableDefinitionNode(node);
        case BallerinaParser.RULE_recordKeyValue:
            return new RecordKeyValueNode(node);
        case BallerinaParser.RULE_forkJoinStatement:
            return new ForkJoinStatementNode(node);
        case BallerinaParser.RULE_returnStatement:
            return new ReturnStatementNode(node);
        case BallerinaParser.RULE_throwStatement:
            return new ThrowStatementNode(node);
        case BallerinaParser.RULE_transformerDefinition:
            return new TransformerDefinitionNode(node);
        case BallerinaParser.RULE_workerReply:
            return new WorkerReplyNode(node);
        case BallerinaParser.RULE_triggerWorker:
            return new TriggerWorkerNode(node);
        case BallerinaParser.RULE_workerDeclaration:
            return new WorkerDeclarationNode(node);
        case BallerinaParser.RULE_workerBody:
            return new WorkerBodyNode(node);
        case BallerinaParser.RULE_joinConditions:
            return new JoinConditionNode(node);
        case BallerinaParser.RULE_field:
            return new FieldNode(node);
        case BallerinaParser.RULE_recordKey:
            return new RecordKeyNode(node);
        case BallerinaParser.RULE_recordValue:
            return new RecordValueNode(node);
        case BallerinaParser.RULE_functionReference:
            return new FunctionReferenceNode(node);
        case BallerinaParser.RULE_codeBlockBody:
            return new CodeBlockBodyNode(node);
        case BallerinaParser.RULE_nonEmptyCodeBlockBody:
            return new NonEmptyCodeBlockBodyNode(node);
        case BallerinaParser.RULE_tryCatchStatement:
            return new TryCatchStatementNode(node);
        case BallerinaParser.RULE_catchClause:
            return new CatchClauseNode(node);
        case BallerinaParser.RULE_codeBlockParameter:
            return new CodeBlockParameterNode(node);
        case BallerinaParser.RULE_foreachStatement:
            return new ForEachStatementNode(node);
        case BallerinaParser.RULE_joinClause:
            return new JoinClauseNode(node);
        case BallerinaParser.RULE_timeoutClause:
            return new TimeoutClauseNode(node);
        case BallerinaParser.RULE_xmlAttrib:
            return new XmlAttribNode(node);
        case BallerinaParser.RULE_namespaceDeclaration:
            return new NamespaceDeclarationNode(node);
        case BallerinaParser.RULE_stringTemplateLiteral:
            return new StringTemplateLiteralNode(node);
        case BallerinaParser.RULE_stringTemplateContent:
            return new StringTemplateContentNode(node);
        case BallerinaParser.RULE_typeConversion:
            return new TypeConversionNode(node);
        case BallerinaParser.RULE_xmlContent:
            return new XmlContentNode(node);
        case BallerinaParser.RULE_invocation:
            return new InvocationNode(node);
        case BallerinaParser.RULE_enumDefinition:
            return new EnumDefinitionNode(node);
        case BallerinaParser.RULE_enumField:
            return new EnumFieldNode(node);
        case BallerinaParser.RULE_builtInReferenceTypeName:
            return new BuiltInReferenceTypeNameNode(node);
        case BallerinaParser.RULE_referenceTypeName:
            return new ReferenceTypeNameNode(node);
        case BallerinaParser.RULE_functionTypeName:
            return new FunctionTypeNameNode(node);
        case BallerinaParser.RULE_lambdaFunction:
            return new LambdaFunctionNode(node);
        case BallerinaParser.RULE_endpointDeclaration:
            return new EndpointDeclarationNode(node);
        case BallerinaParser.RULE_anonStructTypeName:
            return new AnonStructTypeNameNode(node);
        case BallerinaParser.RULE_userDefineTypeName:
            return new UserDefinedTypeName(node);
        case BallerinaParser.RULE_anyIdentifierName:
            return new AnyIdentifierNameNode(node);
        case BallerinaParser.RULE_documentationAttachment:
            return new DocumentationAttachmentNode(node);
        case BallerinaParser.RULE_documentationTemplateInlineCode:
            return new DocumentationTemplateInlineCodeNode(node);
        case BallerinaParser.RULE_singleBackTickDocInlineCode:
            return new SingleBackTickDocInlineCodeNode(node);
        case BallerinaParser.RULE_doubleBackTickDocInlineCode:
            return new DoubleBackTickInlineCodeNode(node);
        case BallerinaParser.RULE_tripleBackTickDocInlineCode:
            return new TripleBackTickInlineCodeNode(node);
        case BallerinaParser.RULE_deprecatedAttachment:
            return new DeprecatedAttachmentNode(node);
        case BallerinaParser.RULE_deprecatedText:
            return new DeprecatedTextNode(node);
        case BallerinaParser.RULE_singleBackTickDeprecatedInlineCode:
            return new SingleBackTickDeprecatedInlineCodeNode(node);
        case BallerinaParser.RULE_doubleBackTickDeprecatedInlineCode:
            return new DoubleBackTickDeprecatedInlineCodeNode(node);
        case BallerinaParser.RULE_tripleBackTickDeprecatedInlineCode:
            return new TripleBackTickDeprecatedInlineCodeNode(node);
        case BallerinaParser.RULE_documentationTemplateAttributeDescription:
            return new DocumentationTemplateAttributeDescriptionNode(node);
        case BallerinaParser.RULE_formalParameterList:
            return new FormalParameterListNode(node);
        case BallerinaParser.RULE_integerLiteral:
            return new IntegerLiteralNode(node);
        case BallerinaParser.RULE_matchPatternClause:
            return new MatchPatternClauseNode(node);
        default:
            return new ANTLRPsiNode(node);
    }
}

Example 5 with VariableReferenceNode

use of org.ballerinalang.plugins.idea.psi.VariableReferenceNode in project ballerina by ballerina-lang.

the class BallerinaPsiImplUtil method getAllLocalVariablesInScope.

/**
 * Returns all local variables in the provided scope.
 *
 * @param scope
 * @param caretOffset
 * @return
 */
@NotNull
public static List<IdentifierPSINode> getAllLocalVariablesInScope(@NotNull ScopeNode scope, int caretOffset) {
    List<IdentifierPSINode> results = new LinkedList<>();
    Collection<VariableDefinitionNode> variableDefinitionNodes = PsiTreeUtil.findChildrenOfType(scope, VariableDefinitionNode.class);
    for (VariableDefinitionNode variableDefinitionNode : variableDefinitionNodes) {
        if (isValidVariable(variableDefinitionNode, scope, caretOffset)) {
            PsiElement identifier = variableDefinitionNode.getNameIdentifier();
            if (identifier != null && identifier instanceof IdentifierPSINode) {
                results.add(((IdentifierPSINode) identifier));
            }
        }
    }
    if (scope instanceof TransformerDefinitionNode) {
        Collection<ExpressionVariableDefinitionStatementNode> nodes = PsiTreeUtil.findChildrenOfType(scope, ExpressionVariableDefinitionStatementNode.class);
        for (ExpressionVariableDefinitionStatementNode node : nodes) {
            ScopeNode closestScope = PsiTreeUtil.getParentOfType(node, TransformerDefinitionNode.class);
            if (closestScope == null || !closestScope.equals(scope)) {
                continue;
            }
            PsiElement identifier = node.getNameIdentifier();
            if (identifier != null && identifier instanceof IdentifierPSINode) {
                results.add(((IdentifierPSINode) identifier));
            }
        }
    }
    if (scope instanceof ForEachStatementNode) {
        VariableReferenceListNode variableReferenceListNode = PsiTreeUtil.getChildOfType(scope, VariableReferenceListNode.class);
        if (variableReferenceListNode != null) {
            List<VariableReferenceNode> variableReferenceNodes = PsiTreeUtil.getChildrenOfTypeAsList(variableReferenceListNode, VariableReferenceNode.class);
            for (VariableReferenceNode variableReferenceNode : variableReferenceNodes) {
                if (variableReferenceNode != null) {
                    IdentifierPSINode identifier = PsiTreeUtil.findChildOfType(variableReferenceNode, IdentifierPSINode.class);
                    if (identifier != null) {
                        results.add(identifier);
                    }
                }
            }
        }
    }
    Collection<AssignmentStatementNode> assignmentStatementNodes = PsiTreeUtil.findChildrenOfType(scope, AssignmentStatementNode.class);
    for (AssignmentStatementNode assignmentStatementNode : assignmentStatementNodes) {
        if (isValidVarAssignment(assignmentStatementNode, scope, caretOffset)) {
            results.addAll(getVariablesFromVarAssignment(assignmentStatementNode));
        }
    }
    return results;
}