1 ! Copyright (C) 2004, 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: kernel.private slots.private classes.tuple.private ;
11 : spin ( x y z -- z y x ) swap rot ; inline
13 : roll ( x y z t -- y z t x ) [ rot ] dip swap ; inline
15 : -roll ( x y z t -- t x y z ) swap [ -rot ] dip ; inline
17 : 2over ( x y z -- x y z x y ) pick pick ; inline
19 : clear ( -- ) { } set-datastack ;
22 GENERIC: call ( callable -- )
26 : ? ( ? true false -- true/false )
27 #! 'if' and '?' can be defined in terms of each other
28 #! because the JIT special-cases an 'if' preceeded by
29 #! two literal quotations.
30 rot [ drop ] [ nip ] if ; inline
32 : if ( ? true false -- ) ? call ;
35 : unless ( ? false -- )
36 swap [ drop ] [ call ] if ; inline
39 swap [ call ] [ drop ] if ; inline
42 : if* ( ? true false -- )
43 pick [ drop call ] [ 2nip call ] if ; inline
46 over [ call ] [ 2drop ] if ; inline
48 : unless* ( ? false -- )
49 over [ drop ] [ nip call ] if ; inline
52 : ?if ( default cond true false -- )
53 pick [ roll 2drop call ] [ 2nip call ] if ; inline
56 : slip ( quot x -- x ) [ call ] dip ;
58 : 2slip ( quot x y -- x y ) [ call ] 2dip ;
60 : 3slip ( quot x y z -- x y z ) [ call ] 3dip ;
62 : dip ( x quot -- x ) swap slip ; inline
64 : 2dip ( x y quot -- x y ) -rot 2slip ; inline
66 : 3dip ( x y z quot -- x y z ) -roll 3slip ; inline
69 : keep ( x quot -- x ) over slip ; inline
71 : 2keep ( x y quot -- x y ) [ 2dup ] dip 2dip ; inline
73 : 3keep ( x y z quot -- x y z ) [ 3dup ] dip 3dip ; inline
77 [ keep ] dip call ; inline
80 [ [ keep ] dip keep ] dip call ; inline
84 [ 2keep ] dip call ; inline
86 : 2tri ( x y p q r -- )
87 [ [ 2keep ] dip 2keep ] dip call ; inline
90 : 3bi ( x y z p q -- )
91 [ 3keep ] dip call ; inline
93 : 3tri ( x y z p q r -- )
94 [ [ 3keep ] dip 3keep ] dip call ; inline
98 [ dip ] dip call ; inline
100 : tri* ( x y z p q r -- )
101 [ [ 2dip ] dip dip ] dip call ; inline
104 : 2bi* ( w x y z p q -- )
105 [ 2dip ] dip call ; inline
108 : bi@ ( x y quot -- )
111 : tri@ ( x y z quot -- )
112 dup dup tri* ; inline
115 : 2bi@ ( w x y z quot -- )
118 : loop ( pred: ( -- ? ) -- )
119 dup slip swap [ loop ] [ drop ] if ; inline recursive
121 : while ( pred: ( -- ? ) body: ( -- ) tail: ( -- ) -- )
122 [ dup slip ] 2dip roll
123 [ [ tuck 2slip ] dip while ]
124 [ 2nip call ] if ; inline recursive
127 GENERIC: hashcode* ( depth obj -- code )
129 M: object hashcode* 2drop 0 ;
131 M: f hashcode* 2drop 31337 ;
133 : hashcode ( obj -- code ) 3 swap hashcode* ; inline
135 GENERIC: equal? ( obj1 obj2 -- ? )
137 M: object equal? 2drop f ;
139 TUPLE: identity-tuple ;
141 M: identity-tuple equal? 2drop f ;
143 : = ( obj1 obj2 -- ? )
144 2dup eq? [ 2drop t ] [ equal? ] if ; inline
146 GENERIC: clone ( obj -- cloned )
150 M: callstack clone (clone) ;
153 GENERIC: new ( class -- tuple )
155 GENERIC: boa ( ... class -- tuple )
158 : 2curry ( obj1 obj2 quot -- curry )
161 : 3curry ( obj1 obj2 obj3 quot -- curry )
162 curry curry curry ; inline
164 : with ( param obj quot -- obj curry )
165 swapd [ swapd call ] 2curry ; inline
167 : prepose ( quot1 quot2 -- compose )
168 swap compose ; inline
170 : 3compose ( quot1 quot2 quot3 -- compose )
171 compose compose ; inline
174 : not ( obj -- ? ) [ f ] [ t ] if ; inline
176 : and ( obj1 obj2 -- ? ) over ? ; inline
178 : >boolean ( obj -- ? ) [ t ] [ f ] if ; inline
180 : or ( obj1 obj2 -- ? ) dupd ? ; inline
182 : xor ( obj1 obj2 -- ? ) [ f swap ? ] when* ; inline
184 : both? ( x y quot -- ? ) bi@ and ; inline
186 : either? ( x y quot -- ? ) bi@ or ; inline
188 : most ( x y quot -- z )
189 [ 2dup ] dip call [ drop ] [ nip ] if ; inline
191 ! Error handling -- defined early so that other files can
192 ! throw errors before continuations are loaded
193 : throw ( error -- * ) 5 getenv [ die ] or 1 (throw) ;
195 ERROR: assert got expect ;
197 : assert= ( a b -- ) 2dup = [ 2drop ] [ assert ] if ;
201 : declare ( spec -- ) drop ;
203 : hi-tag ( obj -- n ) { hi-tag } declare 0 slot ; inline
205 : do-primitive ( number -- ) "Improper primitive call" throw ;