Function convertCondition

packages/graph/src/astToSteps.ts:2338–2465

* Convert AST condition to Step condition format. * @param condition - The AST condition to convert * @param useDirectPropertyAccess - If true, use direct property access (e.g., for shortestPath target conditions) * instead of propertyRef (which requires variable

(
  condition: Condition,
  useDirectPropertyAccess: boolean = false,
)

 *                                  instead of propertyRef (which requires variable bindings)
 */
function convertCondition(
  condition: Condition,
  useDirectPropertyAccess: boolean = false,
): StepCondition {
  switch (condition.type) {
    case "PropertyCondition": {
      const propCondition = condition as PropertyCondition;
      // Convert the condition value - handle variable and property references
      const conditionValue = convertConditionValue(propCondition.value);

      // When useDirectPropertyAccess is true (e.g., shortestPath target conditions),
      // use simple property access that evaluates against the current vertex
      if (useDirectPropertyAccess) {
        return [propCondition.operator, propCondition.property, conditionValue] as StepCondition;
      }

      // Use ExpressionCondition with propertyRef to properly resolve the variable
      // This ensures the condition looks up the variable from the path bindings
      // rather than assuming the current element
      return [
        "expr",
        propCondition.operator as BinaryOperator,
        {
          type: "propertyRef",
          variable: propCondition.variable,
          property: propCondition.property,
        },
        conditionValue,
      ] as StepCondition;
    }

    case "ExistsCondition": {
      const existsCondition = condition as ExistsCondition;
      return ["exists", existsCondition.property] as StepCondition;
    }

    case "AndCondition": {
      const andCondition = condition as AndCondition;
      return [
        "and",
        convertCondition(andCondition.left, useDirectPropertyAccess),
        convertCondition(andCondition.right, useDirectPropertyAccess),
      ] as StepCondition;
    }

    case "OrCondition": {
      const orCondition = condition as OrCondition;
      return [
        "or",
        convertCondition(orCondition.left, useDirectPropertyAccess),
        convertCondition(orCondition.right, useDirectPropertyAccess),
      ] as StepCondition;
    }

    case "XorCondition": {
      const xorCondition = condition as XorCondition;
      return [
        "xor",