fix: list_iadd with void (#146)

...also fixed general iadd with other non-list types

Author: phorward

src/value/list.rs

@@ -165,7 +165,11 @@ impl List {
         // In case list is not a list, make it a list.
         if !list.is("list") {
             let item = RefValue::from(list.borrow().clone());
-            list = Self::list(vec![item], None)?;
+            if item.is_void() {
+                *(list.borrow_mut()) = Self::list(vec![], None)?.into();
+            } else {
+                *(list.borrow_mut()) = Self::list(vec![item], None)?.into();
+            }
         }
 
         // Extend in-place when possible.

src/value/refvalue.rs

@@ -277,7 +277,11 @@ impl RefValue {
         // When a type name was emitted, try to call builtin-function for operation
         if let Some(name) = name {
             match Builtin::get_method(name, op) {
-                Ok(builtin) => return Ok(builtin.call(None, vec![self, operand.ref_or_copy()])?.unwrap()),
+                Ok(builtin) => {
+                    return Ok(builtin
+                        .call(None, vec![self, operand.ref_or_copy()])?
+                        .unwrap())
+                }
                 // default "inline" operation is the non-inline operation assigning the result to itself
                 Err(_) if op.starts_with("i") => {}
                 Err(err) => return Err(err),

tests/list_add.tok

@@ -6,6 +6,15 @@ l += 2
 l += (3, 4)
 l
 
+# iadd with void
+x += (1,2,3)
+x
+
+# iadd with int
+i = 1
+i += (2,3)
+i
+
 # iadd to itself
 a = (1,2)
 b = (3,4)
@@ -39,6 +48,10 @@ l
 
 #(1, 2, 3, 4)
 
+#(1, 2, 3)
+
+#(1, 2, 3)
+
 #(1, 2, 3, 4)
 #(1, 2)
 #(3, 4)