blob: ec54ed28c9ebb9c57542154356958d14acd30fce (
about) (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
;;;; Copyright (C) 1998--2012 Jan Nieuwenhuizen <janneke@gnu.org>
;;;; Han-Wen Nienhuys <hanwen@xs4all.nl>
;;;;
;;;; LilyPond is free software: you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; the Free Software Foundation, either version 3 of the License, or
;;;; (at your option) any later version.
;;;;
;;;; LilyPond is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;;; GNU General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU General Public License
;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
;;; Note: this file can't be used without LilyPond executable
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; type predicates.
(define-public (number-pair? x)
(and (pair? x)
(number? (car x)) (number? (cdr x))))
(define-public (number-pair-list? x)
(and (list? x)
(every number-pair? x)))
(define-public (fraction? x)
(and (pair? x)
(index? (car x)) (index? (cdr x))))
(define-public (rational-or-procedure? x)
(or
(and (rational? x) (exact? x))
(procedure? x)))
(define-public (number-or-grob? x)
(or (ly:grob? x) (number? x)))
(define-public (grob-list? x)
(list? x))
(define-public (number-list? x)
(and (list? x) (every number? x)))
(define-public (index? x)
(and (integer? x) (>= x 0)))
(define-public (moment-pair? x)
(and (pair? x)
(ly:moment? (car x)) (ly:moment? (cdr x))))
(define-public (boolean-or-symbol? x)
(or (boolean? x) (symbol? x)))
(define-public (symbol-list? x)
(and (list? x) (every symbol? x)))
(define-public (symbol-list-or-music? x)
(if (list? x)
(every symbol? x)
(ly:music? x)))
(define-public (string-or-symbol? x)
(or (string? x) (symbol? x)))
(define-public (number-or-string? x)
(or (number? x) (string? x)))
(define-public (number-or-markup? x)
(or (number? x) (markup? x)))
(define-public (string-or-pair? x)
(or (string? x) (pair? x)))
(define-public (string-or-music? x)
(or (string? x) (ly:music? x)))
(define-public (number-or-pair? x)
(or (number? x) (pair? x)))
(define-public (cheap-list? x)
(or (pair? x) (null? x)))
(define-public (symbol-list-or-symbol? x)
(if (list? x)
(every symbol? x)
(symbol? x)))
(define-public (scheme? x) #t)
(define-public (symbol-or-boolean? x)
(or (symbol? x) (boolean? x)))
(define-public (void? x)
(unspecified? x))
;; moved list to end of lily.scm: then all type-predicates are
;; defined.
(define type-p-name-alist '())
(define (match-predicate obj alist)
(if (null? alist)
"Unknown type"
(if (apply (caar alist) obj)
(cdar alist)
(match-predicate obj (cdr alist)))))
(define-public (object-type obj)
(match-predicate obj type-p-name-alist))
(define-public (object-type-name obj)
(type-name (match-predicate obj type-p-name-alist)))
(define-public (type-name predicate)
(let ((entry (assoc predicate type-p-name-alist)))
(if (pair? entry) (cdr entry)
(string-trim-right
(symbol->string (procedure-name predicate))
#\?))))
|
