xref: /freebsd/stand/ficl/softwords/ficlclass.fr (revision e0c4386e7e71d93b0edc0c8fa156263fc4a8b0b6)
1\ #if (FICL_WANT_OOP)
2\ ** ficl/softwords/ficlclass.fr
3\ Classes to model ficl data structures in objects
4\ This is a demo!
5\ John Sadler 14 Sep 1998
6\
7\ ** C - W O R D
8\ Models a FICL_WORD
9\
10
11object subclass c-word
12    c-word     ref: .link
13    c-2byte    obj: .hashcode
14    c-byte     obj: .flags
15    c-byte     obj: .nName
16    c-bytePtr  obj: .pName
17    c-cellPtr  obj: .pCode
18    c-4byte    obj: .param0
19
20    \ Push word's name...
21    : get-name   ( inst class -- c-addr u )
22        2dup
23        my=[ .pName get-ptr ] -rot
24        my=[ .nName get ]
25    ;
26
27    : next   ( inst class -- link-inst class )
28        my=> .link ;
29
30    : ?
31        ." c-word: "
32        2dup --> get-name type cr
33    ;
34
35end-class
36
37\ ** C - W O R D L I S T
38\ Models a FICL_HASH
39\ Example of use:
40\ get-current c-wordlist --> ref current
41\ current --> ?
42\ current --> .hash --> ?
43\ current --> .hash --> next --> ?
44
45object subclass c-wordlist
46    c-wordlist ref: .parent
47    c-ptr      obj: .name
48    c-cell     obj: .size
49    c-word     ref: .hash   ( first entry in hash table )
50
51    : ?
52        --> get-name ." ficl wordlist "  type cr ;
53    : push  drop  >search ;
54    : pop   2drop previous ;
55    : set-current   drop set-current ;
56    : get-name   drop wid-get-name ;
57    : words   { 2:this -- }
58        this my=[ .size get ] 0 do
59            i this my=[ .hash index ]  ( 2list-head )
60            begin
61                2dup --> get-name type space
62                --> next over
63            0= until 2drop cr
64        loop
65    ;
66end-class
67
68\ : named-wid  wordlist postpone c-wordlist  metaclass => ref ;
69
70
71\ ** C - F I C L S T A C K
72object subclass c-ficlstack
73    c-4byte    obj: .nCells
74    c-cellPtr  obj: .link
75    c-cellPtr  obj: .sp
76    c-4byte    obj: .stackBase
77
78    : init   2drop ;
79    : ?      2drop
80        ." ficl stack " cr ;
81    : top
82        --> .sp --> .addr --> prev --> get ;
83end-class
84
85\ #endif
86