PM_SOURCE_ENCODING_NODE

Author: hasumikin

include/mrc_presym.inc

@@ -27,5 +27,6 @@ MRC_SYM_1(call,          25)
 MRC_SYM_1(Kernel,        26)
 MRC_SYM_1(Regexp,        27)
 MRC_SYM_1(compile,       28)
-MRC_SYM_2(nil_p,    nil?,29)
-MRC_SYM_2(back_ref, $+,  30)
+MRC_SYM_1(__ENCODING__,  29)
+MRC_SYM_2(nil_p,    nil?,30)
+MRC_SYM_2(back_ref, $+,  31)

src/codegen_prism.inc

@@ -2823,6 +2823,17 @@ codegen(mrc_codegen_scope *s, mrc_node *tree, int val)
       }
       break;
     }
+    case PM_SOURCE_ENCODING_NODE:
+    {
+      genop_3(s, OP_SSEND, cursp(), new_sym(s, MRC_SYM_1(__ENCODING__)), 0);
+      push();
+      { // Workaround: increase nregs in case __ENCODING__ called alone
+        // (maybe it is a useless use of a literal in void context)
+        push();
+        pop();
+      }
+      break;
+    }
     default:
     {
       char buf[256];