feat: (LSP) if in runtime code, always suggest functions that return …

…Quoted as macro calls (#6098)

# Description

## Problem

When in non-comptime code, when suggesting a function that returns
`Quoted` it should never be suggested as a non-macro call.

## Summary


![lsp-suggest-macro-call](https://github.com/user-attachments/assets/bf870da8-59fe-4993-af73-60e865d141c2)

## Additional Context

## Documentation

Check one:
- [x] No documentation needed.
- [ ] Documentation included in this PR.
- [ ] **[For Experimental Features]** Documentation to be submitted in a
separate PR.

# PR Checklist

- [x] I have tested the changes locally.
- [x] I have formatted the changes with [Prettier](https://prettier.io/)
and/or `cargo fmt` on default settings.

tooling/lsp/src/requests/completion.rs

@@ -113,6 +113,7 @@ struct NodeFinder<'a> {
     /// The line where an auto_import must be inserted
     auto_import_line: usize,
     self_type: Option<Type>,
+    in_comptime: bool,
 }
 
 impl<'a> NodeFinder<'a> {
@@ -156,6 +157,7 @@ impl<'a> NodeFinder<'a> {
             nesting: 0,
             auto_import_line: 0,
             self_type: None,
+            in_comptime: false,
         }
     }
 
@@ -1056,8 +1058,12 @@ impl<'a> Visitor for NodeFinder<'a> {
             self.collect_local_variables(&param.pattern);
         }
 
+        let old_in_comptime = self.in_comptime;
+        self.in_comptime = noir_function.def.is_comptime;
+
         noir_function.def.body.accept(Some(span), self);
 
+        self.in_comptime = old_in_comptime;
         self.type_parameters = old_type_parameters;
         self.self_type = None;
 
@@ -1278,8 +1284,12 @@ impl<'a> Visitor for NodeFinder<'a> {
         let old_local_variables = self.local_variables.clone();
         self.local_variables.clear();
 
+        let old_in_comptime = self.in_comptime;
+        self.in_comptime = true;
+
         statement.accept(self);
 
+        self.in_comptime = old_in_comptime;
         self.local_variables = old_local_variables;
 
         false
@@ -1424,8 +1434,12 @@ impl<'a> Visitor for NodeFinder<'a> {
         let old_local_variables = self.local_variables.clone();
         self.local_variables.clear();
 
+        let old_in_comptime = self.in_comptime;
+        self.in_comptime = true;
+
         block_expression.accept(Some(span), self);
 
+        self.in_comptime = old_in_comptime;
         self.local_variables = old_local_variables;
 
         false

tooling/lsp/src/requests/completion/completion_items.rs

@@ -232,7 +232,13 @@ impl<'a> NodeFinder<'a> {
         if modifiers.is_comptime
             && matches!(func_meta.return_type(), Type::Quoted(QuotedType::Quoted))
         {
-            vec![make_completion_item(false), make_completion_item(true)]
+            if self.in_comptime {
+                vec![make_completion_item(false), make_completion_item(true)]
+            } else {
+                // If not in a comptime block we can't operate with comptime values so the only thing
+                // we can do is call a macro.
+                vec![make_completion_item(true)]
+            }
         } else {
             vec![make_completion_item(false)]
         }

tooling/lsp/src/requests/completion/tests.rs

@@ -2126,7 +2126,9 @@ mod completion_tests {
         comptime fn foobar() -> Quoted {}
 
         fn main() {
-            fooba>|<
+            comptime {
+                fooba>|<
+            }
         }
         "#;
 
@@ -2140,6 +2142,24 @@ mod completion_tests {
         .await;
     }
 
+    #[test]
+    async fn test_suggests_only_macro_call_if_comptime_function_returns_quoted_and_outside_comptime(
+    ) {
+        let src = r#"
+        comptime fn foobar() -> Quoted {}
+
+        fn main() {
+            fooba>|<
+        }
+        "#;
+
+        assert_completion_excluding_auto_import(
+            src,
+            vec![function_completion_item("foobar!()", "foobar!()", "fn() -> Quoted")],
+        )
+        .await;
+    }
+
     #[test]
     async fn test_only_suggests_macro_call_for_unquote() {
         let src = r#"