From dcd3e5907ca830f118bf7b55bbf1b1210a67385d Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Wed, 27 May 2020 23:22:28 +0900
Subject: Define a new function `mrb_funcall_id()`.

`mrb_funcall_id()` takes `mrb_sym` instead of `char*` for a method name.
You can use `MRB_SYM()`/`MRB_QSYM()` to specify the method to call.
---
 src/vm.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/vm.c')

diff --git a/src/vm.c b/src/vm.c
index 2e96cd0dc..5543496c1 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -401,6 +401,25 @@ mrb_funcall(mrb_state *mrb, mrb_value self, const char *name, mrb_int argc, ...)
   return mrb_funcall_argv(mrb, self, mid, argc, argv);
 }
 
+MRB_API mrb_value
+mrb_funcall_id(mrb_state *mrb, mrb_value self, mrb_sym mid, mrb_int argc, ...)
+{
+  mrb_value argv[MRB_FUNCALL_ARGC_MAX];
+  va_list ap;
+  mrb_int i;
+
+  if (argc > MRB_FUNCALL_ARGC_MAX) {
+    mrb_raise(mrb, E_ARGUMENT_ERROR, "Too long arguments. (limit=" MRB_STRINGIZE(MRB_FUNCALL_ARGC_MAX) ")");
+  }
+
+  va_start(ap, argc);
+  for (i = 0; i < argc; i++) {
+    argv[i] = va_arg(ap, mrb_value);
+  }
+  va_end(ap);
+  return mrb_funcall_argv(mrb, self, mid, argc, argv);
+}
+
 static int
 ci_nregs(mrb_callinfo *ci)
 {
-- 
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