From 24a0bd8cfb170a002b5266e4dfd3da007b4fc145 Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Fri, 27 Oct 2023 15:37:00 +0200
Subject: Fix error priority for function arguments

Errors about superfluous arguments are now thrown before errors of the function execution itself.

Fixes #1367
---
 crates/typst-macros/src/func.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'crates')

diff --git a/crates/typst-macros/src/func.rs b/crates/typst-macros/src/func.rs
index 5b8501d0..b67fb909 100644
--- a/crates/typst-macros/src/func.rs
+++ b/crates/typst-macros/src/func.rs
@@ -307,6 +307,9 @@ fn create_wrapper_closure(func: &Func) -> TokenStream {
         }
     };
 
+    // Throws errors about unexpected arguments.
+    let finish = (!func.special.args).then(|| quote! { args.take().finish()?; });
+
     // This is the actual function call.
     let call = {
         let self_ = func
@@ -332,6 +335,7 @@ fn create_wrapper_closure(func: &Func) -> TokenStream {
         |vm, args| {
             let __typst_func = #parent #ident;
             #handlers
+            #finish
             let output = #call;
             ::typst::eval::IntoResult::into_result(output, args.span)
         }
-- 
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