Added CMOVE>

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

diff --git a/src/forth.jl b/src/forth.jl
index 8cc7547..5730c38 100644 (file)
--- a/src/forth.jl
+++ b/src/forth.jl
@@ -109,21 +109,27 @@ F_IMMED = 32
 F_HIDDEN = 64
 NFA_MARK = 128
 
+function dictWrite(ints::Array{Int64,1})
+    mem[mem[H]:(mem[H]+length(ints)-1)] = ints
+    mem[H] += length(ints)
+end
+dictWrite(int::Int64) = dictWrite([int])
+dictWriteString(string::ASCIIString) = dictWrite([Int64(c) for c in string])
+
 function createHeader(name::AbstractString, flags::Int64)
     mem[mem[H]] = mem[mem[CURRENT]]
     mem[mem[CURRENT]] = mem[H]
     mem[H] += 1
 
-    mem[mem[H]] = length(name) | flags | NFA_MARK; mem[H] += 1
-    putString(name, mem[H]); mem[H] += length(name)
+    dictWrite(length(name) | flags | NFA_MARK)
+    dictWriteString(name)
 end
 
 function defPrimWord(name::AbstractString, f::Function; flags::Int64=0)
     createHeader(name, flags)
 
     codeWordAddr = mem[H]
-    mem[codeWordAddr] = defPrim(f, name=name)
-    mem[H] += 1
+    dictWrite(defPrim(f, name=name))
 
     return codeWordAddr
 end
@@ -132,13 +138,9 @@ function defWord(name::AbstractString, wordAddrs::Array{Int64,1}; flags::Int64=0
     createHeader(name, flags)
 
     addr = mem[H]
-    mem[mem[H]] = DOCOL
-    mem[H] += 1
+    dictWrite(DOCOL)
 
-    for wordAddr in wordAddrs
-        mem[mem[H]] = wordAddr
-        mem[H] += 1
-    end
+    dictWrite(wordAddrs)
 
     return addr
 end
@@ -159,8 +161,8 @@ function defNewVar(name::AbstractString, initial::Array{Int64,1}; flags::Int64=0
     codeWordAddr = mem[H]
     varAddr = mem[H] + 1
 
-    mem[mem[H]] = DOVAR; mem[H] += 1
-    mem[mem[H]:(mem[H]+length(initial)-1)] = initial; mem[H] += length(initial)
+    dictWrite(DOVAR)
+    dictWrite(initial)
 
     return varAddr, codeWordAddr
 end
@@ -173,8 +175,8 @@ function defConst(name::AbstractString, val::Int64; flags::Int64=0)
 
     codeWordAddr = mem[H]
 
-    mem[mem[H]] = DOCON; mem[H] += 1
-    mem[mem[H]] = val; mem[H] += 1
+    dictWrite(DOCON)
+    dictWrite(val)
 
     return codeWordAddr
 end
@@ -696,7 +698,7 @@ end)
 
 # Dictionary searches
 
-LFATOCFA_CFA = defPrimWord("LFA>CFA", () -> begin
+FROMLINK_CFA = defPrimWord("LINK>", () -> begin
 
     addr = popPS()
     lenAndFlags = mem[addr+1]
@@ -707,8 +709,6 @@ LFATOCFA_CFA = defPrimWord("LFA>CFA", () -> begin
     return NEXT
 end)
 
-TOBODY_CFA = defWord(">BODY", [INCR_CFA, EXIT_CFA])
-
 CONTEXT, CONTEXT_CFA = defNewVar("CONTEXT", zeros(Int64, 100))
 mem[CONTEXT] = FORTH_CFA
 NUMCONTEXT, NUMCONTEXT_CFA = defNewVar("#CONTEXT", 1)
@@ -753,7 +753,7 @@ FIND_CFA = defPrimWord("FIND", () -> begin
 
     if lfa > 0
         pushPS(lfa)
-        callPrim(mem[LFATOCFA_CFA])
+        callPrim(mem[FROMLINK_CFA])
         if (lenAndFlags & F_IMMED) == F_IMMED
             pushPS(1)
         else
@@ -888,7 +888,7 @@ end, name="DODOES")
 DOES_HELPER_CFA = defPrimWord("(DOES>)", () -> begin
 
     pushPS(mem[mem[CURRENT]])
-    callPrim(mem[LFATOCFA_CFA])
+    callPrim(mem[FROMLINK_CFA])
     cfa = popPS()
 
     runtimeAddr = popPS()
@@ -899,7 +899,7 @@ DOES_HELPER_CFA = defPrimWord("(DOES>)", () -> begin
     end)), name="doesPrim")
 
     return NEXT
-end, flags=F_IMMED)
+end, flags=F_IMMED | F_HIDDEN)
 
 DOES_CFA = defWord("DOES>",
     [LIT_CFA, LIT_CFA, COMMA_CFA, HERE_CFA, LIT_CFA, 3, ADD_CFA, COMMA_CFA,