CODE now a library word.

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

diff --git a/src/forth.jl b/src/forth.jl
index 6afe492..877c2d2 100644 (file)
--- a/src/forth.jl
+++ b/src/forth.jl
@@ -1134,42 +1134,18 @@ IMMEDIATE_CFA = defPrimWord("IMMEDIATE", () -> begin
     return NEXT
 end, flags=F_IMMED)
 
-CODE_CFA = defPrimWord("CODE", () -> begin
-    pushPS(32)
-    callPrim(mem[WORD_CFA])
-    callPrim(mem[HEADER_CFA])
-
-    exprString = "() -> begin\n"
-    while true
-        if mem[TOIN] >= mem[NUMTIB]
-            exprString = string(exprString, "\n")
-            if currentSource() == STDIN
-                println()
-            end
-
-            pushPS(TIB)
-            pushPS(160)
-            callPrim(mem[EXPECT_CFA])
-            mem[NUMTIB] = mem[SPAN]
-            mem[TOIN] = 0
-        end
-
-        pushPS(32)
-        callPrim(mem[WORD_CFA])
-        cAddr = popPS()
-        thisWord = getString(cAddr+1, mem[cAddr])
-
-        if uppercase(thisWord) == "END-CODE"
-            break
-        end
-
-        exprString = string(exprString, " ", thisWord)
-    end
-    exprString = string(exprString, "\nreturn NEXT\nend")
-
+# ( addr n -- primAddr )
+CREATE_PRIM_CFA = defPrimWord("CREATE-PRIM", () -> begin
+    len = popPS()
+    addr = popPS()
+    
+    exprString = string("() -> begin\n",
+                        getString(addr, len), "\n",
+                        "return NEXT\n",
+                        "end")
     func = eval(parse(exprString))
-    dictWrite(defPrim(func))
 
+    pushPS(defPrim(func))
     return NEXT
 end)
 
@@ -1243,7 +1219,9 @@ INCLUDED_CFA = defWord("INCLUDED",
     BRANCH_CFA, -14,                            # Loop
     SOURCE_ID_VAR_CFA, FETCH_CFA,
     CLOSE_FILE_CFA, DROP_CFA,                   # Close file
-    SOURCE_ID_VAR_CFA, STORE_CFA,                   # Restore input source
+    SOURCE_ID_VAR_CFA, STORE_CFA,               # Restore input source
+    LIT_CFA, 0, NUMIB_CFA, STORE_CFA,           # Zero #IB
+    LIT_CFA, 0, TOIN_CFA, STORE_CFA,            # Zero >IN
     EXIT_CFA])
 
 INCLUDE_CFA = defWord("INCLUDE", [LIT_CFA, 32, WORD_CFA,
@@ -1251,6 +1229,27 @@ INCLUDE_CFA = defWord("INCLUDE", [LIT_CFA, 32, WORD_CFA,
     SWAP_CFA, FETCH_CFA,
     INCLUDED_CFA, EXIT_CFA]);
 
+oldCWD = ""
+SETLIBCWD_CFA = defPrimWord("SETLIBCWD", () -> begin
+    global oldCWD = pwd()
+    if !isfile("lib.4th") # Exception for debugging.
+        cd(Pkg.dir("forth","src"))
+    end
+    return NEXT
+end)
+
+RESTORECWD_CFA = defPrimWord("RESTORECWD", () -> begin
+    cd(oldCWD)
+    return NEXT
+end)
+
+INCLUDED_LIB_CFA = defWord("INCLUDED-LIB",
+    [SETLIBCWD_CFA, INCLUDED_CFA, RESTORECWD_CFA, EXIT_CFA])
+
+INCLUDE_LIB_CFA = defWord("INCLUDE-LIB", [LIT_CFA, 32, WORD_CFA,
+    DUP_CFA, INCR_CFA,
+    SWAP_CFA, FETCH_CFA,
+    INCLUDED_LIB_CFA, EXIT_CFA]);
 
 ABORT_CFA = defWord("ABORT",
     [CLOSE_FILES_CFA, DROP_CFA, PSP0_CFA, PSPSTORE_CFA, QUIT_CFA])
@@ -1267,12 +1266,7 @@ end)
 #### VM loop ####
 
 initialized = false
-initFileName = nothing
-if isfile("lib.4th")
-    initFileName = "lib.4th"
-elseif isfile(Pkg.dir("forth","src", "lib.4th"))
-    initFileName = Pkg.dir("forth","src","lib.4th")
-end
+initFileName = "lib.4th"
 
 function run(;initialize=true)
 
@@ -1288,7 +1282,7 @@ function run(;initialize=true)
             putString(initFileName, mem[H])
             pushPS(mem[H])
             pushPS(length(initFileName))
-            pushRS(INCLUDED_CFA+1)
+            pushRS(INCLUDED_LIB_CFA+1)
 
             initialized = true
         else