Fix duplicate completions (#4563)

crates/typst-ide/src/complete.rs

@@ -5,8 +5,8 @@ use ecow::{eco_format, EcoString};
 use if_chain::if_chain;
 use serde::{Deserialize, Serialize};
 use typst::foundations::{
-    fields_on, format_str, mutable_methods_on, repr, AutoValue, CastInfo, Func, Label,
-    NoneValue, Repr, Scope, StyleChain, Styles, Type, Value,
+    fields_on, format_str, repr, AutoValue, CastInfo, Func, Label, NoneValue, Repr,
+    Scope, StyleChain, Styles, Type, Value,
 };
 use typst::model::Document;
 use typst::syntax::{
@@ -396,19 +396,6 @@ fn field_access_completions(
         }
     }
 
-    for &(method, args) in mutable_methods_on(value.ty()) {
-        ctx.completions.push(Completion {
-            kind: CompletionKind::Func,
-            label: method.into(),
-            apply: Some(if args {
-                eco_format!("{method}(${{}})")
-            } else {
-                eco_format!("{method}()${{}}")
-            }),
-            detail: None,
-        })
-    }
-
     for &field in fields_on(value.ty()) {
         // Complete the field name along with its value. Notes:
         // 1. No parentheses since function fields cannot currently be called
@@ -1394,7 +1381,7 @@ mod tests {
     }
 
     #[test]
-    fn test_whitespace_in_autocomplete() {
+    fn test_autocomplete_whitespace() {
         //Check that extra space before '.' is handled correctly.
         test("#() .", 5, &[], &["insert", "remove", "len", "all"]);
         test("#{() .}", 6, &["insert", "remove", "len", "all"], &["foo"]);
@@ -1404,10 +1391,16 @@ mod tests {
     }
 
     #[test]
-    fn test_before_window_char_boundary() {
+    fn test_autocomplete_before_window_char_boundary() {
         // Check that the `before_window` doesn't slice into invalid byte
         // boundaries.
         let s = "😀😀     #text(font: \"\")";
         test(s, s.len() - 2, &[], &[]);
     }
+
+    #[test]
+    fn test_autocomplete_mutable_method() {
+        let s = "#{ let x = (1, 2, 3); x. }";
+        test(s, s.len() - 2, &["at", "push", "pop"], &[]);
+    }
 }

crates/typst/src/foundations/methods.rs

@@ -1,28 +1,9 @@
 //! Handles special built-in methods on values.
 
 use crate::diag::{At, SourceResult};
-use crate::foundations::{Args, Array, Dict, Str, Type, Value};
+use crate::foundations::{Args, Str, Type, Value};
 use crate::syntax::Span;
 
-/// List the available methods for a type and whether they take arguments.
-pub fn mutable_methods_on(ty: Type) -> &'static [(&'static str, bool)] {
-    if ty == Type::of::<Array>() {
-        &[
-            ("first", false),
-            ("last", false),
-            ("at", true),
-            ("pop", false),
-            ("push", true),
-            ("insert", true),
-            ("remove", true),
-        ]
-    } else if ty == Type::of::<Dict>() {
-        &[("at", true), ("insert", true), ("remove", true)]
-    } else {
-        &[]
-    }
-}
-
 /// Whether a specific method is mutating.
 pub(crate) fn is_mutating_method(method: &str) -> bool {
     matches!(method, "push" | "pop" | "insert" | "remove")

crates/typst/src/foundations/mod.rs

@@ -49,7 +49,7 @@ pub use self::float::*;
 pub use self::func::*;
 pub use self::int::*;
 pub use self::label::*;
-pub use self::methods::*;
+pub(crate) use self::methods::*;
 pub use self::module::*;
 pub use self::none::*;
 pub use self::plugin::*;