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gapi.scm
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gapi.scm
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(use srfi-1)
(use srfi-13)
(use util.list)
(use ginfo)
(use term.readline)
;;---------------------
;;Functions related to state
;;---------------------
(define (do-nothing . unused) (undefined))
(define *state-list* '())
(define-macro (define-state name in exec out completion)
`(set! *state-list* (acons (quote ,name)
(cons ,in (cons ,exec (cons ,out ,completion)))
*state-list*)))
(define (get-state name)
(assoc-ref *state-list* name #f))
(define state-in car)
(define state-exec cadr)
(define state-out caddr)
(define state-completion cdddr)
;;---------------------
;;Definition of unit state
;;---------------------
(cond-expand
[gauche.os.windows
(define enable-text-format? #f)]
[else
(define enable-text-format? #t)])
(define (make-underline-text text)
(string-append
(if enable-text-format? "\x1b[4m" "")
text
(if enable-text-format? "\x1b[0m" "")))
(define (make-bold-text text)
(string-append
(if enable-text-format? "\x1b[1m" "")
text
(if enable-text-format? "\x1b[0m" "")))
(define (print-align-text text-list left-space-text
:key (pos -1) (newline? #t))
(unless (null? text-list)
(if enable-text-format?
(let1 space-size (string-length left-space-text)
(when (> 0 pos)
(display left-space-text)
(display (car text-list)))
(receive (h w) (rl-get-screen-size)
(let loop ([text-list (if (> 0 pos) (cdr text-list) text-list)]
[len (if (> 0 pos)
(+ space-size (string-length (car text-list)))
pos)])
(if (null? text-list)
(when newline?
(newline))
(if (< w (+ 1 len (string-length (car text-list))))
(begin
(newline)
(display left-space-text)
(display (car text-list))
(loop (cdr text-list) (+ space-size (string-length (car text-list)))))
(begin
(display " ")
(display (car text-list))
(loop (cdr text-list) (+ 1 len (string-length (car text-list))))))))))
(begin
(if (> 0 pos)
(begin
(display left-space-text)
(display (car text-list)))
(display " "))
(display (string-join (if (> 0 pos) (cdr text-list) text-list) " "))
(when newline?
(newline))))))
(define (print-description name description-list :optional (print-no-document? #t))
(if (null? description-list)
(when print-no-document?
(print (make-bold-text name))
(print " No doccument."))
(begin
(print (make-bold-text name))
(for-each
(lambda (text)
(display " ")
(print text))
description-list))))
(define-class <gapi-context> (<convert-context>) ())
(define-constant gapi-context (make <gapi-context> :port (standard-output-port)))
(define-method output ((context <gapi-context>) (unit <unit-proc>))
(display "(")
(display (make-bold-text (ref unit 'name)))
(print-align-text (map param-name (ref unit 'param))
(make-string (+ 2 (string-length (ref unit 'name))) #\space)
:pos (+ 1 (string-length (ref unit 'name)))
:newline? #f)
(print ")")
(for-each
(lambda (p)
(unless (null? (param-acceptable p))
(print (make-underline-text (param-name p)))
(print-align-text (param-acceptable p) " ")))
(ref unit 'param))
)
(define-method output ((context <gapi-context>) (unit <unit-class>))
(let1 delimiter " :: "
(display (make-bold-text (ref unit 'name)))
(unless (null? (ref unit 'supers))
(display delimiter)
(print-align-text (ref unit 'supers)
" "
:pos (+ (string-length (ref unit 'name))
(string-length delimiter))
:newline? #f)
)
(newline)
(for-each
(lambda (s)
(print (make-underline-text (param-name s)))
(print-align-text (param-acceptable s) " "))
(ref unit 'slots))
))
(define-method output ((context <gapi-context>) (unit <unit-var>))
(print (make-bold-text (ref unit 'name)))
)
(define (show unit)
(with-output-to-port (slot-ref gapi-context 'port)
(lambda ()
(output gapi-context unit))))
(define (substring-match-list text l)
(let1 len (string-length text)
(filter
(lambda (name) (and (<= len (string-length name))
(string=? text (substring name 0 len))))
l)))
(define-macro (or-eq? eq? x . any)
`(or ,@(map (lambda (y) `(,eq? ,x ,y)) any)))
(define (params-without-optional params)
(filter
(lambda (p)
(let1 name (param-name p)
(not (or (string=? "." name) (eq? (string-ref name 0) #\:)))))
params))
(define-method unit-exec-line ((unit <unit-top>) line)
(if (string=? line (ref unit 'name))
(begin
(print-description (ref unit 'name) (ref unit 'description))
#t)
#f))
(define-method unit-exec-line ((unit <unit-proc>) line)
(cond
[(next-method) #t]
[(find (lambda (p) (string=? line (param-name p)))
(params-without-optional (ref unit 'param)))
=> (lambda (p)
(print-description (param-name p) (param-description p))
#t)]
[(or-eq? string=? line "r" "#r" "#return")
(print-description "return" (ref unit 'return))
#t]
[else #f]))
(define-method unit-exec-line ((unit <unit-class>) line)
(cond
[(next-method) #t]
[(find (lambda (p) (string=? line (param-name p))) (ref unit 'slots))
=> (lambda (p)
(print-description (param-name p) (param-description p))
#t)]
[else #f]))
(define-method unit-all-info ((unit <unit-top>))
(print-description (ref unit 'name) (ref unit 'description) #f))
(define-method unit-all-info ((unit <unit-proc>))
(next-method)
(print-description "return" (ref unit 'return) #f)
(for-each (lambda (p) (print-description (param-name p) (param-description p) #f))
(params-without-optional (ref unit 'param))))
(define-method unit-all-info ((unit <unit-class>))
(next-method)
(for-each (lambda (p) (print-description (param-name p) (param-description p) #f))
(ref unit 'slots)))
(define-method unit-candidate ((unit <unit-top>))
(cons (ref unit 'name) '()))
(define-method unit-candidate ((unit <unit-proc>))
(cons "#return" (append (map
param-name
(params-without-optional (ref unit 'param)))
(next-method))))
(define-method unit-candidate ((unit <unit-class>))
(append (map param-name (ref unit 'slots))
(next-method)))
;;
;;definination of unit state
(let ([cur-unit #f])
(define-state unit
;;in action
(lambda (unit)
(rl-set-prompt! :ps1 "more info> " :ps2 "..... ")
(show unit)
(set! cur-unit unit))
;;line exec
(lambda (line)
(cond
[(unit-exec-line cur-unit line)]
[(or-eq? string=? line "a" "#a" "#all") (unit-all-info cur-unit)]
[(or-eq? string=? line "q" "e" "#q" "#quit")
;;transition to initialize state
(cons 'init '())]
[else (print "Not found symbol.")]))
;;out action
do-nothing
;;completation
(let1 candidate #f
(lambda (text state)
(when (zero? state)
(set! candidate (substring-match-list
text
(cons* "#all" "#quit" "#exit"
(unit-candidate cur-unit)))))
(if (null? candidate)
#f
(begin0 (car candidate)
(set! candidate (cdr candidate))))))
))
;;---------------------
;;Definition of initial state
;;---------------------
(define *docs* '())
(define (match-unit-list cmp)
(append-map
(lambda (doc)
(filter
(lambda (unit) (cmp (ref unit 'name)))
(ref doc 'units)))
*docs*))
(define (unit-candidate-list text)
(map
(cut ref <> 'name)
(match-unit-list
(let1 len (string-length text)
(lambda (name)
(and (<= len (string-length name))
(string=? text (substring name 0 len))))))))
(define (exact-match-unit-list text)
(match-unit-list (cut string=? text <>)))
;;---------------------
;;Functions related to command
;;---------------------
(define *commands* '())
(define-macro (define-cmd cmd valid-arg exec completion)
`(set! *commands* (acons (string-append "#" (symbol->string (quote ,cmd)))
(cons ,valid-arg (cons ,exec ,completion))
*commands*)))
(define (get-command cmd)
(assoc-ref *commands* cmd #f))
(define cmd-valid-arg car)
(define cmd-exec cadr)
(define cmd-completion cddr)
(define (get-all-command)
(cons "#exit" (map car *commands*)))
(define (variable-length-argument num) #t)
(define (load-info module)
(unless (any
(lambda (doc) (equal? (ref doc 'name) module))
*docs*)
(guard (e [(<geninfo-warning> e) (print "Error: " (ref e 'message))])
(set! *docs* (cons (geninfo module) *docs*)))))
;;
;;definetion of use command
(define-cmd use
variable-length-argument
;;execute
(lambda modules
(for-each
(lambda (module) (load-info (string->symbol module)))
modules))
;;library completion
(let1 module-list #f
(lambda (text)
(unless module-list
(set! module-list (append-map
(lambda (s)
(library-map s (lambda (m p) (symbol->string m))))
'(* *.* *.*.* *.*.*.* *.*.*.*.*))))
(substring-match-list
text
module-list)))
)
;;
;;definetion of use command
(define-cmd load
variable-length-argument
;;execute
(lambda files
(for-each
load-info
files))
;;file completion
(lambda (text)
(let loop ([state 0]
[l '()])
(cond
[(rl-filename-completion text state)
=> (lambda (file) (loop (+ 1 state) (cons file l)))]
[else (reverse l)]))
))
;;
;;definination of initial state
(define-state init
;;in action
(lambda () (rl-set-prompt! :ps1 "gapi> " :ps2 "..... "))
;;line execution
(lambda (line)
(if (eq? (string-ref line 0) #\#)
(let* ([tokens (string-split line #[\s])]
[cmd (get-command (car tokens))])
(if cmd
(if ((cmd-valid-arg cmd) (length (cdr tokens)))
(apply (cmd-exec cmd) (cdr tokens))
(print "Invalid argument."))
(print (format #f "Unkown command [~a]." line))))
(let1 units (exact-match-unit-list line)
(case (length units)
[(0) (print "Not found.")]
[(1) ;;transition to unit state
(cons 'unit (list (car units)))]
[else ;TODO multiple found. it does wath?
(print "Multiple found.")]))))
;;out execution
do-nothing
;;completion
(let1 candidate #f
(lambda (text state)
(when (zero? state)
(let1 tokens (string-split (string-trim
(rl-get-line-text rl-point))
#[\s])
(set! candidate
(if (and (< 1 (length tokens))
(eq? (string-ref (car tokens) 0) #\#))
(let1 cmd (get-command (car tokens))
(if cmd
((cmd-completion cmd) text)
'()))
(append
(unit-candidate-list text)
(substring-match-list text (get-all-command)))))))
(if (null? candidate)
#f
(begin0
(car candidate)
(set! candidate (cdr candidate))))))
)
;;---------------------
;;Entry point
;;---------------------
(define *cur-state* (get-state 'init))
;;exection first in action
((state-in *cur-state*))
(define (exec-line line)
(let1 result ((state-exec *cur-state*) line)
(when (pair? result)
;;transition
(cond
[(get-state (car result))
=> (lambda (state)
;;exec out action
((state-out state))
;;set new state
(set! *cur-state* state)
;;exec in action
(apply (state-in state) (cdr result)))]
[else (error "State not found.")]))))
(define (exec-completion text state)
((state-completion *cur-state*) text state))
(define (main args)
(let ([readline-port (make-readline-input-port)]
[histfile (string-append (or (sys-getenv "HOME") ".")
"/.gapi_history")])
(rl-set-application-name! "gapi")
(rl-set-basic-word-break-characters! " \t\n()',\";")
(rl-set-basic-quote-characters! "\"")
(rl-set-completion-list-function! exec-completion)
;;cancel filename completion
(rl-set-completion-entry-function! (lambda (text state) #f))
(rl-stifle-history! 100)
(dynamic-wind
(lambda ()
(rl-read-history! histfile))
(lambda ()
(let loop ()
(rl-set-prompt-state! 'ps1)
(let1 line (read-line readline-port)
(unless (eof-object? line)
(let1 line (string-trim-both line)
(unless (string=? line "#exit")
(unless (zero? (string-length line))
(rl-commit-history!)
(exec-line line))
(loop)))))))
(lambda ()
(rl-write-history histfile)))
0))