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
55 ! Slippers and dippers.
56 ! Not declared inline because the compiler special-cases them
58 : slip ( quot x -- x )
59 #! 'slip' and 'dip' can be defined in terms of each other
60 #! because the JIT special-cases a 'dip' preceeded by
61 #! a literal quotation.
64 : 2slip ( quot x y -- x y )
65 #! '2slip' and '2dip' can be defined in terms of each other
66 #! because the JIT special-cases a '2dip' preceeded by
67 #! a literal quotation.
70 : 3slip ( quot x y z -- x y z )
71 #! '3slip' and '3dip' can be defined in terms of each other
72 #! because the JIT special-cases a '3dip' preceeded by
73 #! a literal quotation.
76 : dip ( x quot -- x ) swap slip ;
78 : 2dip ( x y quot -- x y ) -rot 2slip ;
80 : 3dip ( x y z quot -- x y z ) -roll 3slip ;
83 : keep ( x quot -- x ) over slip ; inline
85 : 2keep ( x y quot -- x y ) [ 2dup ] dip 2dip ; inline
87 : 3keep ( x y z quot -- x y z ) [ 3dup ] dip 3dip ; inline
91 [ keep ] dip call ; inline
94 [ [ keep ] dip keep ] dip call ; inline
98 [ 2keep ] dip call ; inline
100 : 2tri ( x y p q r -- )
101 [ [ 2keep ] dip 2keep ] dip call ; inline
104 : 3bi ( x y z p q -- )
105 [ 3keep ] dip call ; inline
107 : 3tri ( x y z p q r -- )
108 [ [ 3keep ] dip 3keep ] dip call ; inline
112 [ dip ] dip call ; inline
114 : tri* ( x y z p q r -- )
115 [ [ 2dip ] dip dip ] dip call ; inline
118 : 2bi* ( w x y z p q -- )
119 [ 2dip ] dip call ; inline
122 : bi@ ( x y quot -- )
125 : tri@ ( x y z quot -- )
126 dup dup tri* ; inline
129 : 2bi@ ( w x y z quot -- )
133 GENERIC: hashcode* ( depth obj -- code )
135 M: object hashcode* 2drop 0 ;
137 M: f hashcode* 2drop 31337 ;
139 : hashcode ( obj -- code ) 3 swap hashcode* ; inline
141 GENERIC: equal? ( obj1 obj2 -- ? )
143 M: object equal? 2drop f ;
145 TUPLE: identity-tuple ;
147 M: identity-tuple equal? 2drop f ;
150 : = ( obj1 obj2 -- ? )
151 2dup eq? [ 2drop t ] [
152 2dup both-fixnums? [ 2drop f ] [ equal? ] if
155 GENERIC: clone ( obj -- cloned )
159 M: callstack clone (clone) ;
162 GENERIC: new ( class -- tuple )
164 GENERIC: boa ( ... class -- tuple )
167 : 2curry ( obj1 obj2 quot -- curry )
170 : 3curry ( obj1 obj2 obj3 quot -- curry )
171 curry curry curry ; inline
173 : with ( param obj quot -- obj curry )
174 swapd [ swapd call ] 2curry ; inline
176 : prepose ( quot1 quot2 -- compose )
177 swap compose ; inline
180 : not ( obj -- ? ) [ f ] [ t ] if ; inline
182 : and ( obj1 obj2 -- ? ) over ? ; inline
184 : >boolean ( obj -- ? ) [ t ] [ f ] if ; inline
186 : or ( obj1 obj2 -- ? ) dupd ? ; inline
188 : xor ( obj1 obj2 -- ? ) [ f swap ? ] when* ; inline
190 : both? ( x y quot -- ? ) bi@ and ; inline
192 : either? ( x y quot -- ? ) bi@ or ; inline
194 : most ( x y quot -- z )
195 [ 2dup ] dip call [ drop ] [ nip ] if ; inline
198 : loop ( pred: ( -- ? ) -- )
199 dup slip swap [ loop ] [ drop ] if ; inline recursive
201 : do ( pred body tail -- pred body tail )
204 : while ( pred: ( -- ? ) body: ( -- ) tail: ( -- ) -- )
205 [ pick 3dip [ do while ] 3curry ] keep if ; inline recursive
207 : until ( pred: ( -- ? ) body: ( -- ) tail: ( -- ) -- )
208 [ [ not ] compose ] 2dip while ; inline
210 ! Error handling -- defined early so that other files can
211 ! throw errors before continuations are loaded
212 : throw ( error -- * ) 5 getenv [ die ] or 1 (throw) ;
214 ERROR: assert got expect ;
216 : assert= ( a b -- ) 2dup = [ 2drop ] [ assert ] if ;
220 : declare ( spec -- ) drop ;
222 : hi-tag ( obj -- n ) { hi-tag } declare 0 slot ; inline
224 : do-primitive ( number -- ) "Improper primitive call" throw ;