From 03d5bb0d1bd5d7c4e09ee793a680f2d538fe0122 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn-Egil=20Dahlberg?= <egil@erlang.org>
Date: Tue, 21 May 2013 18:09:55 +0200
Subject: erts: Initial Map instructions, type and structure

---
 erts/emulator/beam/copy.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'erts/emulator/beam/copy.c')

diff --git a/erts/emulator/beam/copy.c b/erts/emulator/beam/copy.c
index 23c0fca6aa..3a987e213b 100644
--- a/erts/emulator/beam/copy.c
+++ b/erts/emulator/beam/copy.c
@@ -27,6 +27,7 @@
 #include "erl_process.h"
 #include "erl_gc.h"
 #include "big.h"
+#include "erl_map.h"
 #include "erl_binary.h"
 #include "erl_bits.h"
 #include "dtrace-wrapper.h"
@@ -150,6 +151,24 @@ Uint size_object(Eterm obj)
 			goto pop_next;
 		    }
 		    break;
+		case MAP_SUBTAG:
+		    {
+			Uint n;
+			map_t *mp;
+			mp  = (map_t*)map_val_rel(obj,base);
+			ptr = (Eterm *)mp;
+			n   = map_get_size(mp) + 1;
+			sum += n + 2;
+			ptr += 2; /* hdr + size words */
+			while (n--) {
+			    obj = *ptr++;
+			    if (!IS_CONST(obj)) {
+				ESTACK_PUSH(s, obj);
+			    }
+			}
+			goto pop_next;
+		    }
+		    break;
 		case BIN_MATCHSTATE_SUBTAG:
 		    erl_exit(ERTS_ABORT_EXIT,
 			     "size_object: matchstate term not allowed");
@@ -318,6 +337,15 @@ Eterm copy_struct(Eterm obj, Uint sz, Eterm** hpp, ErlOffHeap* off_heap)
 		    }
 		}
 		break;
+	    case MAP_SUBTAG:
+		{
+		    i = map_get_size(objp) + 3;
+		    *argp = make_map_rel(htop, dst_base);
+		    while (i--) {
+			*htop++ = *objp++;
+		    }
+		}
+		break;
 	    case REFC_BINARY_SUBTAG:
 		{
 		    ProcBin* pb;
@@ -537,6 +565,10 @@ Eterm copy_shallow(Eterm* ptr, Uint sz, Eterm** hpp, ErlOffHeap* off_heap)
 		}
 		goto off_heap_common;
 
+	    case MAP_SUBTAG:
+		*hp++ = *tp++;
+		sz--;
+		break;
 	    case EXTERNAL_PID_SUBTAG:
 	    case EXTERNAL_PORT_SUBTAG:
 	    case EXTERNAL_REF_SUBTAG:
-- 
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