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|
; -*- geiser-scheme-implementation:chibi; -*-
(define (all-environment-exports environment prefix)
(if environment
(append (filter (lambda (identifier)
(if (string=? prefix "")
#t
(string-contains identifier prefix)))
(map symbol->string (env-exports environment)))
(all-environment-exports (env-parent environment) prefix))
'()))
(define (geiser:completions prefix . rest)
rest
(sort (all-environment-exports (current-environment) prefix)
string-ci<?))
(define (write-to-string form)
(let ((out (open-output-string)))
(write form out)
(get-output-string out)))
(define (geiser:write/ss-to-string form)
(let ((out (open-output-string)))
(write/ss form out)
(get-output-string out)))
;;> Evaluate a \var{form} in the namespace of the \var{module}.
;;> The meaning of \var{rest} is unknown.
;;> Return the alist with the first field, \scheme{result}, holds
;;> the result of evaluation \scheme{(write)}'d and the second
;;> field, \scheme{output}, contains everyting that the evaluation
;;> would print to the standard output.
;;> In case of an exception, the message is formatted with
;;> \scheme{(chibi show)} and written to both variables in addition
;;> to whatever was already there.
(define (geiser:eval module form . rest)
rest
(guard (err
(else
(write ; to standard output
"Geiser-chibi falure in scheme code.")
(show #t err)))
(let* ((output (open-output-string))
(result (parameterize ((current-output-port output))
(guard (err
(else (show #t err)
(write-to-string (show #f err))))
(if module
(let ((mod (module-env (find-module module))))
(eval form mod))
(eval form))))))
(write ; to standard output (to comint)
`((result ,(write-to-string result))
(output . ,(get-output-string output))))))
(values))
(define (geiser:module-completions prefix . rest)
;; (available-modules) walks the directory tree and is too slow
(let ((modules (map car *modules*)))
(map write-to-string
(delete-duplicates
(filter (lambda (module)
(if (string=? "" prefix)
#t
(string-contains prefix (write-to-string module))))
modules)))))
(define (procedure-arglist id fun)
(let ((arglist (lambda-params (procedure-analysis fun))))
(if (pair? arglist)
(let loop ((arglist arglist)
(optionals? #f)
(required '())
(optional '()))
(cond ((null? arglist)
`(,id ("args" (("required" ,@(reverse required))
("optional" ,@(reverse optional))
("key")
("module" ,(let ((mod (containing-module fun))) (if mod (car mod) #f)))))))
((symbol? arglist)
(loop '()
#t
required
(cons "..." (cons arglist optional))))
(else
(loop
(cdr arglist)
optionals?
(if optionals? required (cons (car arglist) required))
(if optionals? (cons (car arglist) optional) optional)))))
'())))
(define (geiser:operator-arglist id)
(let ((binding (eval id)))
(cond ((procedure? binding)
(if (opcode? binding)
'()
(procedure-arglist id binding)))
(else
'()))))
(define (geiser:autodoc ids . rest)
rest
(cond ((null? ids) '())
((not (list? ids))
(geiser:autodoc (list ids)))
((not (symbol? (car ids)))
(geiser:autodoc (cdr ids)))
(else
(map (lambda (id)
(geiser:operator-arglist id))
ids))))
(define (geiser:no-values)
#f)
(define (geiser:newline)
#f)
;;> A chibi implementation of the standard geiser's location-making
;;> subroutine. \var{file} is a string representing file name with path,
;;> \var{line} is the line number starting from 0 (scheme way).
(define (make-location file line)
(list (cons "file"
(if (string? file)
(path-resolve
file
(current-directory))
'()))
(cons "line" (if (number? line) (+ 1 line) '())))
)
;;> Finds symbol locations in source files. This version
;;> is very early preview and still has the following limitations:
;;> * It only works with exported symbols. (Even for current file).
;;> * Even with exported symbols it ignores the renamed ones.
;;> * It only accesses identifiers which have code positions
;;> associated with them in runtime. I.e. it doesn't grep.
(define (geiser:symbol-location symbol-in-question . rest)
(display "Modules exporting identifier ")
(display symbol-in-question)
(display "found:")
(newline)
(guard (err
((error-object? err)
(display "Error in geiser:symbol-location:")
(display (error-object-message err))
(make-location '() '()))
(else
(display "Peculiar error in geiser:symbol-location:")
(display err)
(make-location '() '())))
(let* ((l-modules-found (modules-exporting-identifier symbol-in-question))
(result (if (not (equal? l-modules-found '()))
(let* ((l-selected-module (caar l-modules-found))
(result (tree-walker
(module-ast
(analyze-module
l-selected-module))
symbol-in-question)))
(display (map car l-modules-found))
(newline)
result)
(let ((result (cons '() '())))
(display "Not found.\n")
result))))
(make-location
(car result)
(- (cdr result) 1) ; Ehh... line numbering in 'make-location starts from 0
))))
(define (tree-walker node . symbol-in-question)
; The reason this function used a (let), not a (begin) is that (begin)
; for some reason does not allow (display)s inside. It
; works in xfce4-terminal, but not here. I decided not to
; debug it, since (let () ) "just worked". TODO.
(if (pair? node)
(let ((result
(tree-walker
(car node)
(car symbol-in-question)))
)
(if result
result
(tree-walker (cdr node) (car symbol-in-question))
)
)
(let () ; we have leaf
(if (set? node)
(if (equal? (ref-name (set-var node)) (car symbol-in-question))
(let
((thingy (set-value node)))
(cond ((lambda? thingy) (lambda->lcons thingy))
;((macro? thingy) (error "Macros not supported"))
(else (set-node->lcons/dirty-trick node))))
#f)
#f
))))
(define (lambda->lcons thingy)
(let* ((l-source (lambda-source thingy))
(l-location
(if (pair? l-source)
(cons
(car l-source)
(cdr l-source))
(let ()
(display "Lambda with no source information.")
(cons '() '())))))
l-location))
;;> We resort to this dirty trick of write/ss parsing because we don't
;;> have the set-source accessor as a public method. If set-source
;;> still appears in Chibi > 0.8, it may still be useful for more
;;> obscure data types.
(define (set-node->lcons/dirty-trick node)
(guard (err
(else
(error "set-source dirty trick failed!" )))
(let* ((l-str-to-check (geiser:write/ss-to-string node))
(strl (string-length l-str-to-check))
(l-matches
(regexp-search
'(: "(\""
(-> filename (*? graphic) )
"\" . "
(-> lineno (+ num) )
")}")
l-str-to-check ))
(l-filename
(regexp-match-submatch l-matches 'filename))
(l-lineno
(string->number
(regexp-match-submatch l-matches 'lineno)))
(l-location
(cons l-filename l-lineno)))
l-location)))
;;> A function to find the file where the symbol
;;> \var{symbol-representing-module} is defined.
(define (geiser:module-location symbol-representing-module)
(guard ( err
((error-object? err)
(display "Error in module-location:\n")
(display err)
(newline)
(display (error-object-message err))
(make-location '() '()))
(else
(display "Peculiar error!\n")
(display err)
(newline)
(make-location '() '())))
(let ((l-module (find-module symbol-representing-module)))
(if (not (equal? l-module '()) )
(make-location
(find-module-file
(module-name->file
(module-name l-module))) 0 )
(make-location '() '())))))
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