3 (defvar *package-list* nil)
5 (defun list-all-packages ()
8 (defun make-package (name &key use)
10 (use (mapcar #'find-package-or-fail use)))
11 (oset package "packageName" name)
12 (oset package "symbols" (new))
13 (oset package "exports" (new))
14 (oset package "use" use)
15 (push package *package-list*)
19 (and (objectp x) (in "symbols" x)))
21 (defun find-package (package-designator)
22 (when (packagep package-designator)
23 (return-from find-package package-designator))
24 (let ((name (string package-designator)))
25 (dolist (package *package-list*)
26 (when (string= (package-name package) name)
29 (defun find-package-or-fail (package-designator)
30 (or (find-package package-designator)
31 (error "Package unknown.")))
33 (defun package-name (package-designator)
34 (let ((package (find-package-or-fail package-designator)))
35 (oget package "packageName")))
37 (defun %package-symbols (package-designator)
38 (let ((package (find-package-or-fail package-designator)))
39 (oget package "symbols")))
41 (defun package-use-list (package-designator)
42 (let ((package (find-package-or-fail package-designator)))
43 (oget package "use")))
45 (defun %package-external-symbols (package-designator)
46 (let ((package (find-package-or-fail package-designator)))
47 (oget package "exports")))
49 (defvar *common-lisp-package*
55 (defvar *user-package*
56 (make-package "CL-USER" :use (list *common-lisp-package*)))
58 (defvar *keyword-package*
59 (make-package "KEYWORD"))
62 (and (symbolp x) (eq (symbol-package x) *keyword-package*)))
64 (defvar *package* *common-lisp-package*)
66 (defmacro in-package (package-designator)
68 (setq *package* (find-package-or-fail ,package-designator))))
70 ;; This function is used internally to initialize the CL package
71 ;; with the symbols built during bootstrap.
72 (defun %intern-symbol (symbol)
74 (if (in "package" symbol)
75 (find-package-or-fail (oget symbol "package"))
76 *common-lisp-package*))
77 (symbols (%package-symbols package)))
78 (oset symbol "package" package)
79 (when (eq package *keyword-package*)
80 (oset symbol "value" symbol))
81 (oset symbols (symbol-name symbol) symbol)))
83 (defun find-symbol (name &optional (package *package*))
84 (let* ((package (find-package-or-fail package))
85 (externals (%package-external-symbols package))
86 (symbols (%package-symbols package)))
89 (values (oget externals name) :external))
91 (values (oget symbols name) :internal))
93 (dolist (used (package-use-list package) (values nil nil))
94 (let ((exports (%package-external-symbols used)))
95 (when (in name exports)
96 (return (values (oget exports name) :inherit)))))))))
98 (defun intern (name &optional (package *package*))
99 (let ((package (find-package-or-fail package)))
100 (multiple-value-bind (symbol foundp)
101 (find-symbol name package)
103 (values symbol foundp)
104 (let ((symbols (%package-symbols package)))
106 (let ((symbol (make-symbol name)))
107 (oset symbol "package" package)
108 (when (eq package *keyword-package*)
109 (oset symbol "value" symbol)
110 (export (list symbol) package))
111 (when (eq package *js-package*)
112 (let ((sym-name (symbol-name symbol))
114 ;; Generate a trampoline to call the JS function
115 ;; properly. This trampoline is very inefficient,
116 ;; but it still works. Ideas to optimize this are
117 ;; provide a special lambda keyword
118 ;; cl::&rest-vector to avoid list argument
119 ;; consing, as well as allow inline declarations.
121 (eval `(lambda (&rest ,args)
122 (let ((,args (list-to-vector ,args)))
123 (%js-call (%js-vref ,sym-name) ,args)))))
124 ;; Define it as a symbol macro to access to the
125 ;; Javascript variable literally.
126 (%define-symbol-macro symbol `(%js-vref ,(string symbol)))))
127 (oset symbols name symbol)
128 (values symbol nil)))))))
130 (defun symbol-package (symbol)
131 (unless (symbolp symbol)
132 (error "it is not a symbol"))
133 (oget symbol "package"))
135 (defun export (symbols &optional (package *package*))
136 (let ((exports (%package-external-symbols package)))
137 (dolist (symb symbols t)
138 (oset exports (symbol-name symb) symb))))