Examples with IFunctionCallNode org.apache.flex.compiler.tree.as.IFunctionCallNode used on opensource projects

Example 1 with IFunctionCallNode

use of org.apache.flex.compiler.tree.as.IFunctionCallNode in project vscode-nextgenas by BowlerHatLLC.

the class ActionScriptTextDocumentService method signatureHelp.

/**
     * Displays a function's parameters, including which one is currently
     * active. Called automatically by VSCode any time that the user types "(",
     * so be sure to check that a function call is actually happening at the
     * current position.
     */
@Override
public CompletableFuture<SignatureHelp> signatureHelp(TextDocumentPositionParams position) {
    String textDocumentUri = position.getTextDocument().getUri();
    if (!textDocumentUri.endsWith(AS_EXTENSION) && !textDocumentUri.endsWith(MXML_EXTENSION)) {
        //we couldn't find a node at the specified location
        return CompletableFuture.completedFuture(new SignatureHelp(Collections.emptyList(), -1, -1));
    }
    IASNode offsetNode = null;
    IMXMLTagData offsetTag = getOffsetMXMLTag(position);
    if (offsetTag != null) {
        IMXMLTagAttributeData attributeData = getMXMLTagAttributeWithValueAtOffset(offsetTag, currentOffset);
        if (attributeData != null) {
            //some attributes can have ActionScript completion, such as
            //events and properties with data binding
            IClassDefinition tagDefinition = (IClassDefinition) currentProject.resolveXMLNameToDefinition(offsetTag.getXMLName(), offsetTag.getMXMLDialect());
            IDefinition attributeDefinition = currentProject.resolveSpecifier(tagDefinition, attributeData.getShortName());
            if (attributeDefinition instanceof IEventDefinition) {
                IMXMLInstanceNode mxmlNode = (IMXMLInstanceNode) getOffsetNode(position);
                IMXMLEventSpecifierNode eventNode = mxmlNode.getEventSpecifierNode(attributeData.getShortName());
                for (IASNode asNode : eventNode.getASNodes()) {
                    IASNode containingNode = getContainingNodeIncludingStart(asNode, currentOffset);
                    if (containingNode != null) {
                        offsetNode = containingNode;
                    }
                }
                if (offsetNode == null) {
                    offsetNode = eventNode;
                }
            }
        }
    }
    if (offsetNode == null) {
        offsetNode = getOffsetNode(position);
    }
    if (offsetNode == null) {
        //we couldn't find a node at the specified location
        return CompletableFuture.completedFuture(new SignatureHelp(Collections.emptyList(), -1, -1));
    }
    IFunctionCallNode functionCallNode = getAncestorFunctionCallNode(offsetNode);
    IFunctionDefinition functionDefinition = null;
    if (functionCallNode != null) {
        IExpressionNode nameNode = functionCallNode.getNameNode();
        IDefinition definition = nameNode.resolve(currentUnit.getProject());
        if (definition instanceof IFunctionDefinition) {
            functionDefinition = (IFunctionDefinition) definition;
        } else if (definition instanceof IClassDefinition) {
            IClassDefinition classDefinition = (IClassDefinition) definition;
            functionDefinition = classDefinition.getConstructor();
        } else if (nameNode instanceof IIdentifierNode) {
            //special case for super()
            IIdentifierNode identifierNode = (IIdentifierNode) nameNode;
            if (identifierNode.getName().equals(IASKeywordConstants.SUPER)) {
                ITypeDefinition typeDefinition = nameNode.resolveType(currentProject);
                if (typeDefinition instanceof IClassDefinition) {
                    IClassDefinition classDefinition = (IClassDefinition) typeDefinition;
                    functionDefinition = classDefinitionToConstructor(classDefinition);
                }
            }
        }
    }
    if (functionDefinition != null) {
        SignatureHelp result = new SignatureHelp();
        List<SignatureInformation> signatures = new ArrayList<>();
        SignatureInformation signatureInfo = new SignatureInformation();
        signatureInfo.setLabel(getSignatureLabel(functionDefinition));
        List<ParameterInformation> parameters = new ArrayList<>();
        for (IParameterDefinition param : functionDefinition.getParameters()) {
            ParameterInformation paramInfo = new ParameterInformation();
            paramInfo.setLabel(param.getBaseName());
            parameters.add(paramInfo);
        }
        signatureInfo.setParameters(parameters);
        signatures.add(signatureInfo);
        result.setSignatures(signatures);
        result.setActiveSignature(0);
        int index = getFunctionCallNodeArgumentIndex(functionCallNode, offsetNode);
        IParameterDefinition[] params = functionDefinition.getParameters();
        int paramCount = params.length;
        if (paramCount > 0 && index >= paramCount) {
            if (index >= paramCount) {
                IParameterDefinition lastParam = params[paramCount - 1];
                if (lastParam.isRest()) {
                    //functions with rest parameters may accept any
                    //number of arguments, so continue to make the rest
                    //parameter active
                    index = paramCount - 1;
                } else {
                    //if there's no rest parameter, and we're beyond the
                    //final parameter, none should be active
                    index = -1;
                }
            }
        }
        if (index != -1) {
            result.setActiveParameter(index);
        }
        return CompletableFuture.completedFuture(result);
    }
    return CompletableFuture.completedFuture(new SignatureHelp(Collections.emptyList(), -1, -1));
}

Example 2 with IFunctionCallNode

use of org.apache.flex.compiler.tree.as.IFunctionCallNode in project vscode-nextgenas by BowlerHatLLC.

the class ActionScriptTextDocumentService method actionScriptCompletionWithNode.

private CompletableFuture<CompletionList> actionScriptCompletionWithNode(TextDocumentPositionParams position, IASNode offsetNode) {
    CompletionList result = new CompletionList();
    result.setIsIncomplete(false);
    result.setItems(new ArrayList<>());
    if (offsetNode == null) {
        //we couldn't find a node at the specified location
        autoCompletePackageBlock(result);
        return CompletableFuture.completedFuture(result);
    }
    IASNode parentNode = offsetNode.getParent();
    IASNode nodeAtPreviousOffset = null;
    if (parentNode != null) {
        nodeAtPreviousOffset = parentNode.getContainingNode(currentOffset - 1);
    }
    if (!isActionScriptCompletionAllowedInNode(position, offsetNode)) {
        //if we're inside a node that shouldn't have completion!
        return CompletableFuture.completedFuture(new CompletionList());
    }
    //variable types
    if (offsetNode instanceof IVariableNode) {
        IVariableNode variableNode = (IVariableNode) offsetNode;
        IExpressionNode nameExpression = variableNode.getNameExpressionNode();
        IExpressionNode typeNode = variableNode.getVariableTypeNode();
        int line = position.getPosition().getLine();
        int column = position.getPosition().getCharacter();
        if (line >= nameExpression.getEndLine() && line <= typeNode.getLine()) {
            if ((line != nameExpression.getEndLine() && line != typeNode.getLine()) || (line == nameExpression.getEndLine() && column > nameExpression.getEndColumn()) || (line == typeNode.getLine() && column <= typeNode.getColumn())) {
                autoCompleteTypes(offsetNode, result);
            }
            return CompletableFuture.completedFuture(result);
        }
    }
    if (parentNode != null && parentNode instanceof IVariableNode) {
        IVariableNode variableNode = (IVariableNode) parentNode;
        if (offsetNode == variableNode.getVariableTypeNode()) {
            autoCompleteTypes(parentNode, result);
            return CompletableFuture.completedFuture(result);
        }
    }
    //function return types
    if (offsetNode instanceof IFunctionNode) {
        IFunctionNode functionNode = (IFunctionNode) offsetNode;
        IContainerNode parameters = functionNode.getParametersContainerNode();
        IExpressionNode typeNode = functionNode.getReturnTypeNode();
        if (typeNode != null) {
            int line = position.getPosition().getLine();
            int column = position.getPosition().getCharacter();
            if (line >= parameters.getEndLine() && column > parameters.getEndColumn() && line <= typeNode.getLine() && column <= typeNode.getColumn()) {
                autoCompleteTypes(offsetNode, result);
                return CompletableFuture.completedFuture(result);
            }
        }
    }
    if (parentNode != null && parentNode instanceof IFunctionNode) {
        IFunctionNode functionNode = (IFunctionNode) parentNode;
        if (offsetNode == functionNode.getReturnTypeNode()) {
            autoCompleteTypes(parentNode, result);
            return CompletableFuture.completedFuture(result);
        }
    }
    //new keyword types
    if (parentNode != null && parentNode instanceof IFunctionCallNode) {
        IFunctionCallNode functionCallNode = (IFunctionCallNode) parentNode;
        if (functionCallNode.getNameNode() == offsetNode && functionCallNode.isNewExpression()) {
            autoCompleteTypes(parentNode, result);
            return CompletableFuture.completedFuture(result);
        }
    }
    if (nodeAtPreviousOffset != null && nodeAtPreviousOffset instanceof IKeywordNode && nodeAtPreviousOffset.getNodeID() == ASTNodeID.KeywordNewID) {
        autoCompleteTypes(nodeAtPreviousOffset, result);
        return CompletableFuture.completedFuture(result);
    }
    //as and is keyword types
    if (parentNode != null && parentNode instanceof IBinaryOperatorNode && (parentNode.getNodeID() == ASTNodeID.Op_AsID || parentNode.getNodeID() == ASTNodeID.Op_IsID)) {
        IBinaryOperatorNode binaryOperatorNode = (IBinaryOperatorNode) parentNode;
        if (binaryOperatorNode.getRightOperandNode() == offsetNode) {
            autoCompleteTypes(parentNode, result);
            return CompletableFuture.completedFuture(result);
        }
    }
    if (nodeAtPreviousOffset != null && nodeAtPreviousOffset instanceof IBinaryOperatorNode && (nodeAtPreviousOffset.getNodeID() == ASTNodeID.Op_AsID || nodeAtPreviousOffset.getNodeID() == ASTNodeID.Op_IsID)) {
        autoCompleteTypes(nodeAtPreviousOffset, result);
        return CompletableFuture.completedFuture(result);
    }
    //class extends keyword
    if (offsetNode instanceof IClassNode && nodeAtPreviousOffset != null && nodeAtPreviousOffset instanceof IKeywordNode && nodeAtPreviousOffset.getNodeID() == ASTNodeID.KeywordExtendsID) {
        autoCompleteTypes(offsetNode, result);
        return CompletableFuture.completedFuture(result);
    }
    //class implements keyword
    if (offsetNode instanceof IClassNode && nodeAtPreviousOffset != null && nodeAtPreviousOffset instanceof IKeywordNode && nodeAtPreviousOffset.getNodeID() == ASTNodeID.KeywordImplementsID) {
        autoCompleteTypes(offsetNode, result);
        return CompletableFuture.completedFuture(result);
    }
    //interface extends keyword
    if (offsetNode instanceof IInterfaceNode && nodeAtPreviousOffset != null && nodeAtPreviousOffset instanceof IKeywordNode && nodeAtPreviousOffset.getNodeID() == ASTNodeID.KeywordExtendsID) {
        autoCompleteTypes(offsetNode, result);
        return CompletableFuture.completedFuture(result);
    }
    //package (must be before member access)
    if (offsetNode instanceof IPackageNode) {
        IPackageNode packageNode = (IPackageNode) offsetNode;
        autoCompletePackageName(packageNode.getPackageName(), result);
        return CompletableFuture.completedFuture(result);
    }
    if (parentNode != null && parentNode instanceof FullNameNode) {
        IASNode gpNode = parentNode.getParent();
        if (gpNode != null && gpNode instanceof IPackageNode) {
            IPackageNode packageNode = (IPackageNode) gpNode;
            autoCompletePackageName(packageNode.getPackageName(), result);
        }
    }
    if (parentNode != null && parentNode instanceof IPackageNode) {
        //we'll get here if the last character in the package name is .
        IPackageNode packageNode = (IPackageNode) parentNode;
        IExpressionNode nameNode = packageNode.getNameExpressionNode();
        if (offsetNode == nameNode) {
            autoCompletePackageName(packageNode.getPackageName(), result);
            return CompletableFuture.completedFuture(result);
        }
    }
    //import (must be before member access)
    if (parentNode != null && parentNode instanceof IImportNode) {
        IImportNode importNode = (IImportNode) parentNode;
        IExpressionNode nameNode = importNode.getImportNameNode();
        if (offsetNode == nameNode) {
            String importName = importNode.getImportName();
            importName = importName.substring(0, position.getPosition().getCharacter() - nameNode.getColumn());
            autoCompleteImport(importName, result);
            return CompletableFuture.completedFuture(result);
        }
    }
    if (parentNode != null && parentNode instanceof FullNameNode) {
        IASNode gpNode = parentNode.getParent();
        if (gpNode != null && gpNode instanceof IImportNode) {
            IImportNode importNode = (IImportNode) gpNode;
            IExpressionNode nameNode = importNode.getImportNameNode();
            if (parentNode == nameNode) {
                String importName = importNode.getImportName();
                importName = importName.substring(0, position.getPosition().getCharacter() - nameNode.getColumn());
                autoCompleteImport(importName, result);
                return CompletableFuture.completedFuture(result);
            }
        }
    }
    if (nodeAtPreviousOffset != null && nodeAtPreviousOffset instanceof IImportNode) {
        autoCompleteImport("", result);
        return CompletableFuture.completedFuture(result);
    }
    //member access
    if (offsetNode instanceof IMemberAccessExpressionNode) {
        IMemberAccessExpressionNode memberAccessNode = (IMemberAccessExpressionNode) offsetNode;
        IExpressionNode leftOperand = memberAccessNode.getLeftOperandNode();
        IExpressionNode rightOperand = memberAccessNode.getRightOperandNode();
        int line = position.getPosition().getLine();
        int column = position.getPosition().getCharacter();
        if (line >= leftOperand.getEndLine() && line <= rightOperand.getLine()) {
            if ((line != leftOperand.getEndLine() && line != rightOperand.getLine()) || (line == leftOperand.getEndLine() && column > leftOperand.getEndColumn()) || (line == rightOperand.getLine() && column <= rightOperand.getColumn())) {
                autoCompleteMemberAccess(memberAccessNode, result);
                return CompletableFuture.completedFuture(result);
            }
        }
    }
    if (parentNode != null && parentNode instanceof IMemberAccessExpressionNode) {
        IMemberAccessExpressionNode memberAccessNode = (IMemberAccessExpressionNode) parentNode;
        //you would expect that the offset node could only be the right
        //operand, but it's actually possible for it to be the left operand,
        //even if the . has been typed! only sometimes, though.
        boolean isValidLeft = true;
        if (offsetNode == memberAccessNode.getLeftOperandNode() && memberAccessNode.getRightOperandNode() instanceof IIdentifierNode) {
            //if the left and right operands both exist, then this is not
            //member access and we should skip ahead
            isValidLeft = false;
        }
        if (offsetNode == memberAccessNode.getRightOperandNode() || isValidLeft) {
            autoCompleteMemberAccess(memberAccessNode, result);
            return CompletableFuture.completedFuture(result);
        }
    }
    if (nodeAtPreviousOffset != null && nodeAtPreviousOffset instanceof IMemberAccessExpressionNode) {
        //depending on the left operand, if a . is typed, the member access
        //may end up being the previous node instead of the parent or offset
        //node, so check if the right operand is empty
        IMemberAccessExpressionNode memberAccessNode = (IMemberAccessExpressionNode) nodeAtPreviousOffset;
        IExpressionNode rightOperandNode = memberAccessNode.getRightOperandNode();
        if (rightOperandNode instanceof IIdentifierNode) {
            IIdentifierNode identifierNode = (IIdentifierNode) rightOperandNode;
            if (identifierNode.getName().equals("")) {
                autoCompleteMemberAccess(memberAccessNode, result);
                return CompletableFuture.completedFuture(result);
            }
        }
    }
    //local scope
    do {
        //nodes to check
        if (offsetNode instanceof IScopedNode) {
            IScopedNode scopedNode = (IScopedNode) offsetNode;
            //include all members and local things that are in scope
            autoCompleteScope(scopedNode, false, result);
            //include all public definitions
            IASScope scope = scopedNode.getScope();
            IDefinition definitionToSkip = scope.getDefinition();
            autoCompleteDefinitions(result, false, false, null, definitionToSkip);
            return CompletableFuture.completedFuture(result);
        }
        offsetNode = offsetNode.getParent();
    } while (offsetNode != null);
    return CompletableFuture.completedFuture(result);
}