From: Tim Vaughan <tgvaughan@gmail.com>
Date: Tue, 24 May 2016 11:36:48 +0000 (+1200)
Subject: CREATE/DOES> working.  Closes #2.
X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?a=commitdiff_plain;h=d75b27e59e0ea50e52018239a74e1edc831219f7;p=forth.jl.git

CREATE/DOES> working.  Closes #2.
---

diff --git a/src/forth.jl b/src/forth.jl
index 0835e4b..80f6b76 100644
--- a/src/forth.jl
+++ b/src/forth.jl
@@ -902,6 +902,9 @@ end)
 
 # Compilation
 
+HERE = defWord("HERE",
+    [H_CFA, FETCH, EXIT])
+
 HEADER = defPrimWord("HEADER", () -> begin
     wordAddr = popPS()+1
     wordLen = mem[wordAddr-1]
@@ -915,33 +918,35 @@ end)
 CREATE = defWord("CREATE",
     [LIT, 32, WORD, HEADER,
     LIT, DOVAR, COMMA,
-    EXIT]);
+    EXIT])
 
 DODOES = defPrim(() -> begin
     pushRS(reg.IP)
     reg.IP = popPS()
+    pushPS(reg.W + 1)
     return NEXT
 end, name="DODOES")
 
-BDOES = defPrimWord("(DOES>)", () -> begin
+DOES_HELPER = defPrimWord("(DOES>)", () -> begin
+
     pushPS(mem[LATEST])
     callPrim(mem[TOCFA])
     cfa = popPS()
-    println(cfa)
+
+    runtimeAddr = popPS()
 
     mem[cfa] = defPrim(eval(:(() -> begin
-        pushPS($(mem[H]))
+        pushPS($(runtimeAddr))
         return DODOES
     end)), name="doesPrim")
 
-    mem[mem[H]] = LIT; mem[H] += 1
-    mem[mem[H]] = cfa+1; mem[H] += 1
-
     return NEXT
 end, flags=F_IMMED)
 
 DOES = defWord("DOES>",
-    [BDOES, EXIT])
+    [BTICK, LIT, COMMA, HERE, LIT, 3, ADD, COMMA,
+    BTICK, DOES_HELPER, COMMA, BTICK, EXIT, COMMA, EXIT],
+    flags=F_IMMED)
 
 LBRAC = defPrimWord("[", () -> begin
     mem[STATE] = 0
diff --git a/src/lib.4th b/src/lib.4th
index f8eb737..647b499 100644
--- a/src/lib.4th
+++ b/src/lib.4th
@@ -27,8 +27,6 @@
 
 : DEPTH PSP@ PSP0 - ;
 
-: HERE H @ ;
-
 : '\n' 10 ;
 : BL 32 ;