File:
[gforth] /
gforth /
wordinfo.fs
Revision
1.5:
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Mon Sep 12 19:00:41 1994 UTC (29 years, 7 months ago) by
pazsan
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MAIN
CVS tags:
HEAD
Added forth variants for primitives
Added a generator for forth primitives
Cleaned up some minor errors
Changed names of local access (was cell size dependent)
Where is "getopt.h"???!? Added tiny workaround. Where is getopt_long?
1: \ WORDINFO.FS V1.0 17may93jaw
2:
3: \ May be cross-compiled
4: \ If you want check values then exclude comments,
5: \ but keep in mind that this can't be cross-compiled
6:
7: INCLUDE look.fs
8:
9: \ Wordinfo is a tool that checks a nfa
10: \ and finds out what wordtype we have
11: \ it is used in SEE.FS
12:
13: : alias? ( nfa -- flag )
14: dup name> look
15: 0= ABORT" WINFO: CFA not found"
16: \ cell+
17: 2dup <>
18: IF nip dup 1 cells - here !
19: count $1f and here cell+ place true
20: ELSE 2drop false THEN ;
21:
22: : var? ( nfa -- flag )
23: cell+ (name>)
24: >code-address ['] udp >code-address = ;
25:
26: : con? ( nfa -- flag )
27: cell+ (name>)
28: >code-address ['] bl >code-address = ;
29:
30: : user? ( nfa -- flag )
31: cell+ (name>)
32: >code-address ['] s0 >code-address = ;
33:
34: : does? ( nfa -- flag )
35: cell+ dup (name>)
36: >code-address ['] source >code-address =
37: dup IF swap (name>) cell+ @ here ! ELSE nip THEN ;
38:
39: : defered? ( nfa -- flag )
40: dup does?
41: IF here @ ['] source cell+ @ =
42: dup IF swap cell+ (name>) >body @ here ! ELSE nip THEN
43: ELSE drop false THEN ;
44:
45: : colon? ( nfa -- flag )
46: cell+ (name>)
47: >code-address ['] does? >code-address = ;
48:
49: \ VALUE VCheck
50:
51: \ : value? ( nfa -- flag )
52: \ dup does?
53: \ IF here @ ['] VCheck cell+ @ =
54: \ dup IF swap (name>) >body @ here ! ELSE nip THEN
55: \ ELSE drop false THEN ;
56:
57: : prim? ( nfa -- flag )
58: name>
59: forthstart u< ;
60:
61: \ None nestable IDs:
62:
63: 1 CONSTANT Pri# \ Primitives
64: 2 CONSTANT Con# \ Constants
65: 3 CONSTANT Var# \ Variables
66: 4 CONSTANT Val# \ Values
67:
68: \ Nestabe IDs:
69:
70: 5 CONSTANT Doe# \ Does part
71: 6 CONSTANT Def# \ Defer
72: 7 CONSTANT Col# \ Colon def
73: 8 CONSTANT Use# \ User variable
74:
75: \ Nobody knows:
76:
77: 9 CONSTANT Ali# \ Alias
78:
79: 10 CONSTANT Str# \ Structure words
80:
81: 11 CONSTANT Com# \ Compiler directives : ; POSTPONE
82:
83: CREATE InfoTable
84: ' Prim? A, Pri# ,
85: ' Alias? A, Ali# ,
86: ' Con? A, Con# ,
87: ' Var? A, Var# ,
88: \ ' Value? A, Val# ,
89: ' Defered? A, Def# ,
90: ' Does? A, Doe# ,
91: ' Colon? A, Col# ,
92: ' User? A, Use# ,
93: 0 ,
94:
95: : WordInfo ( nfa --- code )
96: InfoTable
97: BEGIN dup @ dup
98: WHILE swap 2 cells + swap
99: 2 pick swap execute
100: UNTIL
101: 1 cells - @ nip
102: ELSE
103: 2drop drop 0
104: THEN ;
105:
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