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

Example 16 with ParameterNode

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

the class FieldReference method getVariants.

@NotNull
@Override
public Object[] getVariants() {
    IdentifierPSINode identifier = getElement();
    PsiElement prevVisibleLeaf = PsiTreeUtil.prevVisibleLeaf(identifier);
    // Todo - remove hard coded "."
    if (prevVisibleLeaf == null || !".".equals(prevVisibleLeaf.getText())) {
        return new LookupElement[0];
    }
    PsiElement previousField = PsiTreeUtil.prevVisibleLeaf(prevVisibleLeaf);
    if (previousField == null) {
        return new LookupElement[0];
    }
    PsiReference reference = previousField.findReferenceAt(0);
    if (reference == null) {
        PsiElement prevSibling = identifier.getParent().getPrevSibling();
        if (prevSibling == null) {
            return new LookupElement[0];
        }
        if (prevSibling instanceof VariableReferenceNode) {
            PsiElement[] children = prevSibling.getChildren();
            if (children.length <= 0) {
                return new LookupElement[0];
            }
            PsiElement firstChild = children[0].getFirstChild();
            if (firstChild == null) {
                return new LookupElement[0];
            }
            PsiReference functionReference = firstChild.findReferenceAt(firstChild.getTextLength());
            if (functionReference == null) {
                return new LookupElement[0];
            }
            PsiElement resolvedElement = functionReference.resolve();
            if (resolvedElement == null) {
                return new LookupElement[0];
            }
            PsiElement parent = resolvedElement.getParent();
            if (parent instanceof FunctionDefinitionNode) {
                List<TypeNameNode> returnTypes = BallerinaPsiImplUtil.getReturnTypes(((FunctionDefinitionNode) parent));
                if (returnTypes.size() == 1) {
                    TypeNameNode typeNameNode = returnTypes.get(0);
                    List<LookupElement> functions = Arrays.asList((LookupElement[]) TypeReference.getVariants(typeNameNode));
                    return functions.toArray(new LookupElement[functions.size()]);
                }
            }
        }
    }
    if (reference == null) {
        return new LookupElement[0];
    }
    // Todo - use util method
    PsiElement resolvedElement = reference.resolve();
    if (resolvedElement == null || !(resolvedElement instanceof IdentifierPSINode)) {
        return new LookupElement[0];
    }
    PsiElement resolvedElementParent = resolvedElement.getParent();
    StructDefinitionNode structDefinitionNode = null;
    List<LookupElement> results = new LinkedList<>();
    // Resolve the corresponding resolvedElementParent to get the struct definition.
    if (resolvedElementParent instanceof VariableDefinitionNode || resolvedElementParent instanceof CodeBlockParameterNode || resolvedElementParent instanceof ParameterNode) {
        structDefinitionNode = BallerinaPsiImplUtil.resolveStructFromDefinitionNode(resolvedElementParent);
    } else if (resolvedElementParent instanceof FieldDefinitionNode) {
        structDefinitionNode = BallerinaPsiImplUtil.resolveTypeNodeStruct((resolvedElementParent));
    } else if (resolvedElementParent instanceof NameReferenceNode) {
        AssignmentStatementNode assignmentStatementNode = PsiTreeUtil.getParentOfType(resolvedElement, AssignmentStatementNode.class);
        if (assignmentStatementNode != null) {
            structDefinitionNode = BallerinaPsiImplUtil.getStructDefinition(assignmentStatementNode, ((IdentifierPSINode) resolvedElement));
        } else {
            structDefinitionNode = BallerinaPsiImplUtil.findStructDefinition((IdentifierPSINode) resolvedElement);
        }
        if (structDefinitionNode != null) {
            IdentifierPSINode structName = PsiTreeUtil.findChildOfType(structDefinitionNode, IdentifierPSINode.class);
            if (structName != null) {
                resolvedElement = structName;
            }
        }
    } else if (resolvedElementParent instanceof EnumDefinitionNode) {
        Collection<EnumFieldNode> fieldDefinitionNodes = PsiTreeUtil.findChildrenOfType(resolvedElementParent, EnumFieldNode.class);
        results.addAll(BallerinaCompletionUtils.createEnumFieldLookupElements(fieldDefinitionNodes, (IdentifierPSINode) resolvedElement));
        return results.toArray(new LookupElement[results.size()]);
    } else if (resolvedElementParent instanceof StructDefinitionNode) {
        structDefinitionNode = ((StructDefinitionNode) resolvedElementParent);
    }
    if (structDefinitionNode == null) {
        return new LookupElement[0];
    }
    Collection<FieldDefinitionNode> fieldDefinitionNodes = PsiTreeUtil.findChildrenOfType(structDefinitionNode, FieldDefinitionNode.class);
    results.addAll(BallerinaCompletionUtils.createFieldLookupElements(fieldDefinitionNodes, (IdentifierPSINode) resolvedElement, null));
    List<IdentifierPSINode> attachedFunctions = BallerinaPsiImplUtil.getAttachedFunctions(structDefinitionNode);
    results.addAll(BallerinaCompletionUtils.createAttachedFunctionsLookupElements(attachedFunctions));
    return results.toArray(new LookupElement[results.size()]);
}

Example 17 with ParameterNode

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

the class BallerinaParameterInfoHandler method getItemsToShow.

/**
 * Returns an list of {@link ParameterListNode} which corresponds to the given element and parent element.
 *
 * @param element
 * @param parent
 * @return
 */
private static List<PsiElement> getItemsToShow(PsiElement element, PsiElement parent) {
    // This method can be a overloaded method. So there can be multiple signatures. To store all of these, we
    // create a list.
    List<PsiElement> list = new ArrayList<>();
    // Function name will be at NameReferenceNode. So we search for this child node.
    PsiElement namedIdentifierDefNode = getNameIdentifierDefinitionNode(parent);
    PsiElement nameIdentifier = getNameIdentifier(element, namedIdentifierDefNode);
    if (nameIdentifier == null || !(nameIdentifier instanceof IdentifierPSINode)) {
        return list;
    }
    PsiReference reference = nameIdentifier.findReferenceAt(nameIdentifier.getTextLength());
    if (reference != null) {
        // Resolve the reference
        PsiElement resolvedElement = reference.resolve();
        if (resolvedElement != null) {
            // Resolved element will be the identifier of the function node. So we get the parent
            // node (FunctionDefinitionNode).
            PsiElement definitionNode = resolvedElement.getParent();
            if (definitionNode instanceof ParameterNode) {
                boolean isLambda = BallerinaPsiImplUtil.isALambdaFunction(resolvedElement);
                if (isLambda) {
                    ParameterTypeNameList parameterTypeNameList = PsiTreeUtil.findChildOfType(definitionNode, ParameterTypeNameList.class);
                    if (parameterTypeNameList != null) {
                        list.add(parameterTypeNameList);
                    }
                }
            } else {
                // Since we need the ParameterListNode, search for ParameterListNode child node.
                ParameterListNode parameterListNode = PsiTreeUtil.findChildOfType(definitionNode, ParameterListNode.class);
                // Add to the list if the result is not null.
                if (parameterListNode != null) {
                    list.add(parameterListNode);
                }
            }
        }
    }
    return list;
}