Handle case when rust macro node has no children of type identifier

helper/src/rust/parser.rs

@@ -1,5 +1,5 @@
-use tree_sitter::{Parser, Node};
 use serde_json::{Map, Value};
+use tree_sitter::{Node, Parser};
 
 use crate::base_parser::BaseParser;
 use crate::traverse;
@@ -36,7 +36,7 @@ impl<'a> BaseParser for RustParser<'a> {
                         new_line = sibling_node.start_position().row + 1;
                         temp_node = sibling_node;
                     } else {
-                      break;
+                        break;
                     }
                 }
 
@@ -55,12 +55,19 @@ impl<'a> RustParser<'a> {
 
         let tree = parser.parse(code, None).unwrap();
 
-        Self { code, tree, line, node_types }
+        Self {
+            code,
+            tree,
+            line,
+            node_types,
+        }
     }
 
     fn parse_node(&self, node: &Node) -> Option<Result<Map<String, Value>, String>> {
         for child_node in traverse::PreOrder::new(node.walk()) {
-            if child_node.start_position().row + 1 == *self.line && self.node_types.contains(&child_node.kind()) {
+            if child_node.start_position().row + 1 == *self.line
+                && self.node_types.contains(&child_node.kind())
+            {
                 return match child_node.kind() {
                     "function_item" => Some(self.parse_function(&child_node)),
                     _ => None,
@@ -77,20 +84,27 @@ impl<'a> RustParser<'a> {
         for child_node in node.children(&mut node.walk()) {
             match child_node.kind() {
                 "function_modifiers" => {
-                    let unsafe_modifier = child_node.children(&mut child_node.walk()).filter(|node| node.kind() == "unsafe").next();
+                    let unsafe_modifier = child_node
+                        .children(&mut child_node.walk())
+                        .filter(|node| node.kind() == "unsafe")
+                        .next();
                     if unsafe_modifier.is_some() {
                         tokens.insert("has_unsafe".to_string(), Value::Bool(true));
                     }
-                },
+                }
                 "generic_type" => {
-                    let result_enum = child_node.children(&mut child_node.walk())
-                        .filter(|node| node.kind() == "type_identifier" && self.get_node_text(&node) == "Result")
+                    let result_enum = child_node
+                        .children(&mut child_node.walk())
+                        .filter(|node| {
+                            node.kind() == "type_identifier"
+                                && self.get_node_text(&node) == "Result"
+                        })
                         .next();
 
                     if result_enum.is_some() {
                         tokens.insert("has_errors".to_string(), Value::Bool(true));
                     }
-                },
+                }
                 "parameters" => {
                     let mut params = Vec::new();
 
@@ -118,12 +132,12 @@ impl<'a> RustParser<'a> {
                     if !params.is_empty() {
                         tokens.insert("params".to_string(), Value::Array(params));
                     }
-                },
+                }
                 "block" => {
                     let has_panics = self.has_panics(&child_node);
                     tokens.insert("has_panics".to_string(), Value::Bool(has_panics));
-                },
-                _ => {},
+                }
+                _ => {}
             }
         }
 
@@ -132,12 +146,15 @@ impl<'a> RustParser<'a> {
 
     fn has_panics(&self, node: &Node) -> bool {
         if node.kind() == "macro_invocation" {
-            let macro_name = node
+            let macro_name = match node
                 .children(&mut node.walk())
                 .filter(|node| node.kind() == "identifier")
                 .next()
                 .and_then(|node| Some(self.get_node_text(&node)))
-                .unwrap();
+            {
+                Some(name) => name,
+                None => return false,
+            };
 
             if macro_name == "panic" {
                 return true;