-( = Type predicates = )
+( ==== Type predicates ==== )
:noname ( args -- boolobj )
2dup 1 ensure-arg-count
car primitive-proc-type istype? -rot 2drop boolean-type
; make-primitive procedure?
-( = Type conversions = )
+( ==== Type conversions ==== )
:noname ( args -- fixnum )
2dup 1 ensure-arg-count
drop character-type
; make-primitive integer->char
-: num-to-charlist ( num -- charlist )
- ?dup 0= if
+: fixnum-to-charlist ( fixnum -- charlist )
+ over 0= if
+ 2drop
[char] 0 character-type nil cons
exit
then
- nil rot
+ nil 2swap ( charlist fixnum )
begin
- ?dup 0>
+ over 0>
while
- dup 10 mod swap 10 / swap
- 2swap rot
- [char] 0 + character-type 2swap
- cons
- rot
+ 2dup swap 10 mod swap ( charlist fixnum fixnummod )
+ 2swap swap 10 / swap ( charlist fixnummod fixnumdiv )
+ -2rot ( fixnumdiv charlist fixnummod )
+
+ drop [char] 0 + character-type 2swap
+ cons ( fixnumdiv newcharlist )
+
+ 2swap
repeat
+
+ 2drop
;
:noname ( args -- string )
2dup 1 ensure-arg-count
car fixnum-type ensure-arg-type
- drop
+ 2dup swap abs swap
- dup 0< swap abs ( bool num )
- num-to-charlist
- rot if
+ fixnum-to-charlist ( fixnum charlist )
+ 2swap drop 0< if
[char] - character-type 2swap cons
then
charlist>symbol
; make-primitive string->symbol
-( = Arithmetic = )
+( ==== Arithmetic ==== )
: add-prim ( args -- fixnum )
2dup nil objeq? if
hide relcfa
-( = Pairs and Lists = )
+( ==== Pairs and Lists ==== )
:noname ( args -- pair )
2dup 2 ensure-arg-count
ok-symbol
; make-primitive set-cdr!
-( = Polymorphic equality testing = )
+( ==== Polymorphic equality testing ==== )
:noname ( args -- bool )
2dup 2 ensure-arg-count
objeq? boolean-type
; make-primitive eq?
+
+( ==== Input/Output ==== )
+
+:noname ( args -- finalResult )
+ 2dup 1 ensure-arg-count
+ car string-type ensure-arg-type
+
+ drop pair-type
+ pad charlist>cstr
+ pad swap load
+; make-primitive load
+
+' read make-primitive read
+
+defer display
+:noname ( args -- none )
+ 2dup 1 ensure-arg-count
+
+ car print cr
+
+ none
+; make-primitive write
+
+: displaypair ( pairobj -- )
+ 2dup
+ car display
+ cdr
+ nil-type istype? if 2drop exit then
+ pair-type istype? if space recurse exit then
+ ." . " display
+;
+
+: displaychar ( charobj -- )
+ drop emit
+;
+
+:noname ( obj -- )
+ pair-type istype? if ." (" displaypair ." )" exit then
+ character-type istype? if displaychar exit then
+ string-type istype? if (printstring) exit then
+
+ print
+; is display
+
+:noname ( args -- none )
+ 2dup 1 ensure-arg-count
+ car string-type ensure-arg-type
+
+ (printstring) cr
+
+ none
+; make-primitive display-string
+
+:noname ( args -- none )
+ 2dup 1 ensure-arg-count
+ car character-type ensure-arg-type
+
+ displaychar cr
+
+ none
+; make-primitive display-character
+
+:noname ( args -- none )
+ 2dup 1 ensure-arg-count
+ car
+
+ display cr
+
+ none
+; make-primitive display
+
+:noname ( args -- none )
+ 0 ensure-arg-count
+
+ cr
+
+ none
+; make-primitive newline
+
+( ==== Evaluation ==== )
+
+:noname ( args -- result )
+ 2dup car 2swap cdr
+
+ nil? false = if car then ( proc argvals )
+
+ apply
+; make-primitive apply