fix: parse fundef type json

[yjl9903]

No description provided.

[peter-jerry-ye-code-review]

From the provided git diff output, here are three potential issues that can be identified:

1. Incorrect Pattern Matching in Loop:

   • The original code attempts to match the entire json array in each iteration of the loop:

     match json {
       [name, ty] => {
         let name = match name.as_string() {
           Some(name) => name

     This is incorrect because it tries to match the whole array (json) instead of the individual element (json[i]). This will likely cause a runtime error or unexpected behavior.
   • Suggested Fix: Update the match statement to match against json[i] instead:

     match json[i] {
       [name, ty] => {
         let name = match name.as_string() {
           Some(name) => name

2. Potential Array Out-of-Bounds Access:

   • The corrected match statement assumes that each element in json[i] is an array with exactly two elements ([name, ty]). If any element in json does not conform to this structure, it will result in a match failure or runtime error.
   • Suggestion: Ensure that the structure of json[i] is validated before attempting to match it.

3. Mutable Array Assignment:

   • The code initializes an empty array let array = [] but does not show how it is updated with new elements. Assuming array should be mutable and updated within the loop, it should be declared as such:

     let mut array = []

   • Suggestion: Ensure that array is mutable if it is intended to be updated within the loop.

These observations focus on ensuring correctness and robustness in handling JSON data and managing arrays within the loop.

[lynzrand]

This was missed when updating the implementation, thanks for bringing it up.