chore: add call formatter

tooling/nargo_fmt/src/visitor/expr.rs

@@ -39,6 +39,16 @@
                     self.format_expr(infix.rhs)
                 )
             }
+            ExpressionKind::Call(call_expr) => {
+                let formatted_func = self.format_expr(*call_expr.func);
+                let formatted_args = call_expr
+                    .arguments
+                    .iter()
+                    .map(|arg| self.format_expr(arg.clone()))
+                    .collect::<Vec<_>>()
+                    .join(", ");
+                format!("{}({})", formatted_func, formatted_args)
+            }
             ExpressionKind::Literal(literal) => match literal {
                 Literal::Integer(_) => slice!(self, span.start(), span.end()).to_string(),
                 Literal::Array(ArrayLiteral::Repeated { repeated_element, length }) => {
@@ -96,7 +106,7 @@
         if let Some(first_stmt) = block.first() {
             let slice = slice!(self, self.last_position, first_stmt.span.start());
             let len =
                 slice.chars().take_while(|ch| ch.is_whitespace()).collect::<String>().rfind('\n');
             self.last_position += len.unwrap_or(0) as u32;
         }
     }

tooling/nargo_fmt/tests/expected/call.nr

@@ -1,3 +1,3 @@
-fn main() {
-    main(4, 3);
+fn foo() {
+    my_function(10, some_value, another_func(20, 30));
 }

tooling/nargo_fmt/tests/input/call.nr

@@ -1,3 +1,3 @@
-fn main() {
-    main(4, 3);
-}
+fn foo() {
+    my_function(   10,some_value,another_func( 20 , 30)  );
+}