X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?a=blobdiff_plain;f=scheme-primitives.4th;h=e446b2e57cfea95bc5efd91d1fb5f8faa240020c;hb=480095585b96fbcc5a4fb58fb57188609aadb6e5;hp=56ecab0e5fb3c3d6f0bfa2248dd3649e74e49bc6;hpb=7e44c5ca79a16106aefa315ccf38e74dcd365554;p=scheme.forth.jl.git diff --git a/scheme-primitives.4th b/scheme-primitives.4th index 56ecab0..e446b2e 100644 --- a/scheme-primitives.4th +++ b/scheme-primitives.4th @@ -354,7 +354,8 @@ hide relcfa ' read make-primitive read -:noname ( args -- ) +defer display +:noname ( args -- none ) 2dup 1 ensure-arg-count car print cr @@ -362,6 +363,62 @@ hide relcfa 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