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(define-module (lang elisp internals set)
#:use-module (lang elisp internals evaluation)
#:use-module (lang elisp internals signal)
#:export (set value))
;; Set SYM's variable value to VAL, and return VAL.
(define (set sym val)
(if (module-defined? the-elisp-module sym)
(module-set! the-elisp-module sym val)
(module-define! the-elisp-module sym val))
val)
;; Return SYM's variable value. If it has none, signal an error if
;; MUST-EXIST is true, just return #nil otherwise.
(define (value sym must-exist)
(if (module-defined? the-elisp-module sym)
(module-ref the-elisp-module sym)
(if must-exist
(error "Symbol's value as variable is void:" sym)
%nil)))
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