X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?p=forth.jl.git;a=blobdiff_plain;f=src%2Fforth.jl;h=2bd68b9ab1475d5901645ba1fe67bedae223a1d0;hp=f10b9637a7247b2904df7926adf56efd0fb21f8d;hb=40ee2b7687b038db08a7337fc1ca36cc70633167;hpb=05df6187b8d42844f2813162e6ba8265b816a287

diff --git a/src/forth.jl b/src/forth.jl
index f10b963..2bd68b9 100644
--- a/src/forth.jl
+++ b/src/forth.jl
@@ -604,6 +604,66 @@ openFiles = Dict{Int64,IOStream}()
 nextFileID = 1
 SOURCE_ID, SOURCE_ID_CFA = defNewVar("SOURCE-ID", 0)
 
+
+## File access modes
+FAM_RO = 0
+FAM_WO = 1
+FAM_RO_CFA = defConst("R/O", FAM_RO)
+FAM_WO_CFA = defConst("W/O", FAM_WO)
+
+function fileOpener(create::Bool)
+    fnameLen = popPS()
+    fnameAddr = popPS()
+    fam = popPS()
+
+    fname = getString(fnameAddr, fnameLen)
+
+    if create && !isfile(fname)
+        pushPS(0)
+        pushPS(-1) # error
+        return NEXT
+    end
+
+    if (fam == FAM_RO)
+        mode = "r"
+    else
+        mode = "w"
+    end
+
+    openFiles[nextFileID] = open(fname, mode)
+    pushPS(nextFileID)
+    pushPS(0)
+    
+    nextFileID += 1
+end
+
+OPEN_FILE_CFA = defPrimWord("OPEN-FILE", () -> begin
+    fileOpener(false)
+    return NEXT
+end);
+
+CREATE_FILE_CFA = defPrimWord("CREATE-FILE", () -> begin
+    fileOpener(true)
+    return NEXT
+end);
+
+CLOSE_FILE_CFA = defPrimWord("CLOSE-FILE", () -> begin
+    fid = popPS()
+    close(openFiles[fid])
+    delete!(openFiles, fid)
+    return NEXT
+end)
+
+CLOSE_FILES_CFA = defPrimWord("CLOSE-FILES", () -> begin
+    for fh in values(openFiles)
+        close(fh)
+    end
+    empty!(openFiles)
+
+    return NEXT
+end)
+                              
+
 EMIT_CFA = defPrimWord("EMIT", () -> begin
     print(Char(popPS()))
     return NEXT
@@ -1102,38 +1162,13 @@ QUIT_CFA = defWord("QUIT",
     BRANCH_CFA,-4])
 
 ABORT_CFA = defWord("ABORT",
-    [CLOSEFILES_CFA, PSP0_CFA, PSPSTORE_CFA, QUIT_CFA])
+    [CLOSE_FILES_CFA, PSP0_CFA, PSPSTORE_CFA, QUIT_CFA])
 
 BYE_CFA = defPrimWord("BYE", () -> begin
     println("\nBye!")
     return 0
 end)
 
-# File I/O
-
-INCLUDE_CFA = defPrimWord("INCLUDE", () -> begin
-    pushPS(32)
-    callPrim(mem[WORD_CFA])
-    wordAddr = popPS()+1
-    wordLen = mem[wordAddr-1]
-    word = getString(wordAddr, wordLen)
-
-    fname = word
-    if !isfile(fname)
-        fname = Pkg.dir("forth","src",word)
-        if !isfile(fname)
-            error("No file named $word found in current directory or package source directory.")
-        end
-    end
-    push!(sources, open(fname, "r"))
-
-    # Clear input buffer
-    mem[NUMTIB] = 0
-
-    return NEXT
-end)
-
-
 #### VM loop ####
 
 initialized = false
@@ -1145,14 +1180,14 @@ elseif isfile(Pkg.dir("forth","src", "lib.4th"))
 end
 
 function run(;initialize=true)
-    # Begin with STDIN as source
-    push!(sources, STDIN)
 
     global initialized, initFileName
     if !initialized && initialize
         if initFileName != nothing
             print("Including definitions from $initFileName...")
-            push!(sources, open(initFileName, "r"))
+
+            # TODO
+
             initialized = true
         else
             println("No library file found. Only primitive words available.")
@@ -1174,10 +1209,6 @@ function run(;initialize=true)
             showerror(STDOUT, ex)
             println()
 
-            while !isempty(sources) && currentSource() != STDIN
-                close(pop!(sources))
-            end
-
             # QUIT
             reg.IP = ABORT_CFA + 1
             jmp = NEXT