From: Tim Vaughan <tgvaughan@gmail.com>
Date: Mon, 18 Apr 2016 19:32:39 +0000 (+1200)
Subject: Added HIDE, IMMEDIATE
X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?p=forth.jl.git;a=commitdiff_plain;h=ce55be3d16cf4ccb4284d323fc045b2afed20320

Added HIDE, IMMEDIATE
---

diff --git a/src/forth.jl b/src/forth.jl
index cdfe88d..8c5c3de 100644
--- a/src/forth.jl
+++ b/src/forth.jl
@@ -700,6 +700,12 @@ HIDDEN = defPrim("HIDDEN", () -> begin
     reurn mem[NEXT]
 end)
 
+HIDE = defWord("HIDE",
+    [WORD,
+    FIND,
+    HIDDEN,
+    EXIT])
+
 COLON = defWord(":",
     [WORD,
     CREATE,
@@ -714,6 +720,12 @@ SEMICOLON = defWord(";",
     LBRAC,
     EXIT], flags=F_IMMEDIATE)
 
+IMMEDIATE = defPrim("IMMEDIATE", () -> begin
+    lenAndFlagsAddr = mem[LATEST] + 1
+    mem[lenAndFlagsAddr] = mem[lenAndFlagsAddr] $ F_IMMEDIATE
+    return mem[NEXT]
+end, flags=F_IMMEDIATE)
+
 #### VM loop ####
 function runVM()
     jmp = NEXT