X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?p=forth.jl.git;a=blobdiff_plain;f=src%2Flib_8_vocab.4th;h=8ad875f334bb14e2699600fb392c26f57da98454;hp=e0ba306dfcfa4c2a50cbd7e7d8c82ad8350166d1;hb=d3205350a0b5935ac26e154750f5916ebbeebae3;hpb=56f581c25775f4244cd60d5943a5beb46a9ccafb

diff --git a/src/lib_8_vocab.4th b/src/lib_8_vocab.4th
index e0ba306..8ad875f 100644
--- a/src/lib_8_vocab.4th
+++ b/src/lib_8_vocab.4th
@@ -10,14 +10,43 @@
 
         >link
 
-        DUP @ LATEST !      ( set LATEST to point to the previous word )
+        dup @ current @ 1+ !      ( set LATEST to point to the previous word )
 ;
 
-: HIDE
+\ Mark word as hidden
+: HIDE ( -- )
         BL WORD FIND DROP >NAME
         DUP @ F_HIDDEN OR SWAP !
 ;
 
+: ?HIDDEN
+        1+              ( skip over the link pointer )
+        @               ( get the flags/length byte )
+        F_HIDDEN AND    ( mask the F_HIDDEN flag and return it (as a truth value) )
+;
+
+\ Display name of word
+: .NAME ( cfa -- )
+        DUP @           ( get the flags/length byte )
+        F_LENMASK AND   ( mask out the flags - just want the length )
+
+        BEGIN
+                DUP 0>          ( length > 0? )
+        WHILE
+                SWAP 1+         ( addr len -- len addr+1 )
+                DUP @           ( len addr -- len addr char | get the next character)
+                DUP 32 >= IF
+                        EMIT    ( len addr char -- len addr | and print it)
+                ELSE
+                        BASE @ SWAP HEX
+                        ." \x" 0 .R
+                        BASE !
+                THEN
+                SWAP 1-         ( len addr -- addr len-1    | subtract one from length )
+        REPEAT
+        2DROP           ( len addr -- )
+;
+
 \ Create new vocabulary
 : VOCABULARY
         create 0 ,
@@ -40,6 +69,9 @@ vocabulary ROOT
 ;
 
 : PREVIOUS
+        #context @
+        1 <= abort" Cannot empty search order stack!"
+
         1 #context -!
 ;