@neo4j-cypher/editor-support/es/completion/rules/ruleVariableInExpressionPossibleFunction.js

Core functionality to support Cypher integration into editors

import * as CypherTypes from "../../lang/CypherTypes";
import * as CompletionTypes from "../CompletionTypes";
import { TreeUtils } from "../../util/TreeUtils";

// If variable is inside expression context then it might be both variable and function
export default (element => {
  const variable = TreeUtils.findAnyParent(element, [CypherTypes.VARIABLE_CONTEXT]);
  const expression = TreeUtils.findAnyParent(variable, [CypherTypes.EXPRESSION_CONTEXT]);
  return variable != null && expression != null ? [{
    type: CompletionTypes.VARIABLE
  }, {
    type: CompletionTypes.FUNCTION_NAME
  }] : [];
});