Working on CREATE/DOES>

[forth.jl.git] / src / forth.jl

diff --git a/src/forth.jl b/src/forth.jl
index c1ca1a0..e571758 100644 (file)
--- a/src/forth.jl
+++ b/src/forth.jl
@@ -768,6 +768,8 @@ end)
 
 # Compilation
 
+STATE, STATE_CFA = defNewVar("STATE", 0)
+
 HEADER = defPrimWord("HEADER", () -> begin
 
     wordLen = popPS()
@@ -786,8 +788,6 @@ COMMA = defPrimWord(",", () -> begin
     return NEXT
 end)
 
-STATE, STATE_CFA = defNewVar("STATE", 0)
-
 LBRAC = defPrimWord("[", () -> begin
     mem[STATE] = 0
     return NEXT
@@ -836,6 +836,28 @@ TICK = defWord("'",
 BTICK = defWord("[']",
     [FROMR, DUP, INCR, TOR, FETCH, EXIT])
 
+# CREATE and DOES>
+
+CREATE = defWord("CREATE",
+    [WORD,
+    HEADER,
+    LIT, DOVAR, COMMA, EXIT]);
+
+DODOES = defPrim(() -> begin
+    pushRS(reg.IP)
+    reg.IP = reg.W + 1
+    return NEXT
+end, name="DOCOL")
+
+defConst("DODOES", DODOES)
+
+FROMDOES_PAREN = defWord("(DOES>)",
+    [DODOES, LAST, FETCH, TOCFA, STORE, EXIT])
+
+FROMDOES = defWord("DOES>",
+    [BTICK, FROMDOES_PAREN, COMMA, BTICK, EXIT, COMMA,
+    BTICK, LIT, COMMA, LATEST, FETCH, TODFA, COMMA], flags=F_IMMED)
+    
 
 # Strings