e7c5f95a |
1 | (in-package :lisp-on-lines) |
2 | |
3 | (define-description description ()) |
4 | |
5 | (defgeneric find-description-class (name &optional errorp) |
6 | (:method ((name (eql t)) &optional errorp) |
7 | (declare (ignore errorp)) |
8 | (find-class 'description t)) |
9 | (:method ((name symbol) &optional errorp) |
10 | (or (find-class (defining-description name) errorp) |
11 | (find-description-class t))) |
12 | (:method ((description description) &optional errorp) |
13 | (declare (ignore errorp)) |
14 | (class-of description))) |
15 | |
16 | (defun find-description (name) |
17 | (slot-value (find-description-class name) 'instance)) |
18 | |
19 | (defun description-attributes (description) |
20 | (closer-mop:class-slots (find-description-class description))) |
21 | |
22 | (define-layered-function attributes (description)) |
23 | |
24 | (define-layered-method attributes (description) |
25 | (description-attributes description)) |
26 | |
27 | ;;;!-- TODO: This is a prime candidate for optimization |
28 | (defun find-attribute (description attribute-name) |
29 | (find attribute-name (description-attributes description) :key #'attribute-name)) |
30 | |
31 | (define-display ((description description)) |
32 | (format *display* "~{~A~%~}" |
33 | (mapcar |
34 | (lambda (attribute) |
35 | (with-output-to-string (*display*) |
36 | (display-attribute attribute))) |
37 | (attributes description)))) |
38 | |
39 | (define-layered-method description-of (object) |
40 | (find-description 't)) |
41 | |
42 | (define-layered-method description-of ((symbol symbol)) |
43 | (find-description 'symbol)) |
44 | |
45 | (define-description symbol () |
46 | ((identity :label "Symbol:") |
47 | (name |
48 | :function #'symbol-name |
49 | :label "Name:") |
50 | (value |
51 | :label "Value:" |
52 | :function |
53 | (lambda (symbol) |
54 | (if (boundp symbol) |
55 | (symbol-value symbol) |
56 | "<UNBOUND>"))) |
57 | (package :function #'symbol-package |
58 | :label "Package:") |
59 | (function :label "Function:" |
60 | :function |
61 | (lambda (symbol) |
62 | (if (fboundp symbol) |
63 | (symbol-function symbol) |
64 | "<UNBOUND>"))))) |
65 | |
66 | |
67 | |
68 | |
69 | |
70 | |
71 | |
72 | |
73 | |
74 | |
75 | |