ELSE
DROP
THEN
- AGAIN ;
+ AGAIN ; ( Yay! We now have comments! )
: UNTIL IMMEDIATE
' 0BRANCH ,
: OVER ( a b -- a b a ) SWAP DUP ROT ;
+( An alternative comment syntax. Reads until the end of the line. )
+: \ IMMEDIATE
+ BEGIN
+ KEY
+ 10 = UNTIL ;
+
+\ So far, S" has only worked in immediate mode, which is backwards -- actually,
+\ the main use-case of this is as a compile-time word. Let's fix that.
+: S" IMMEDIATE
+ ' LITSTRING ,
+ HERE @ 0 C, \ We will put the length here
+ 0
+ BEGIN
+ 1 +
+ KEY DUP C,
+ 34 = UNTIL
+ \ Remove final "
+ HERE @ 1 - HERE !
+ 1 -
+ SWAP C! ;
+
( Compile the given string into the current word directly. )
: STORE-STRING ( str len -- )
BEGIN
( Read a number from standard input. )
: READ-NUMBER READ-WORD PARSE-NUMBER ;
-( vim: syntax=forth
-)
+: RESTART S" Ready." TELL NEWLINE ;
+RESTART
+