268 lines
7.4 KiB
Racket
268 lines
7.4 KiB
Racket
#lang racket/base
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(require racket/set)
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(require racket/match)
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(require racket/class)
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(require racket/async-channel)
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(require racket/gui/base)
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(require racket/date)
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(require racket/format)
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(require racket/math)
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(require images/icons/control)
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(require images/icons/arrow)
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(require images/icons/symbol)
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(require images/icons/misc)
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(require images/icons/style)
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(require racket/pretty)
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(require (prefix-in core: "../types.rkt"))
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(provide any-state?
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open-debugger)
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;; Frame
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;; Toolbar
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;; Rewind one step - moves without executing
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;; Fast-forward one step - moves without executing
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;; --
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;; Stop
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;; Run one step
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;; Play
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;; --
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;; Select history depth
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;; --
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;; Kill this process
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;; State display
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;; If the state is (vm?), special display; permits spawning debuggers on nested processes
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;; Endpoints display
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;; Shows ID and role
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;; Permits deletion of endpoint
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;; Permits interaction with endpoint??
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;; Trace display
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;; Selection of a row rewinds to that point
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(define (any-state? x) #t)
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(define (open-debugger name)
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(define to-debugger (make-channel))
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(define from-debugger (make-semaphore 0))
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(parameterize ((current-eventspace (make-eventspace)))
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(new debugger%
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[name name]
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[from-vm to-debugger]
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[to-vm from-debugger]))
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(values (lambda (t) (channel-put to-debugger t))
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(lambda () (semaphore-wait from-debugger))))
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(define debugger%
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(class object%
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(init-field name)
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(init-field from-vm)
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(init-field to-vm)
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(define mutex (make-semaphore 1))
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(define stepping? #t)
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(define waiting? #f)
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(define frame (new frame%
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[label (format "~a" name)]
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[width 480]
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[height 700]))
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(define menu-bar (new menu-bar% [parent frame]))
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(define edit-menu (new menu% [label "Edit"] [parent menu-bar]))
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(append-editor-operation-menu-items edit-menu #f)
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(define toolbar (new horizontal-pane%
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[parent frame]
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[stretchable-height #f]
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[alignment '(right center)]))
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(define state-panel (new horizontal-panel%
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[parent frame]))
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(define endpoints (new list-box%
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[style '(single column-headers)]
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[label #f]
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[choices '()]
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[parent frame]
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[columns '("ID" "Orientation" "Topic" "Type")]))
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(define events (new list-box%
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[style '(single column-headers)]
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[label #f]
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[choices '()]
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[parent frame]
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[columns '("Time" "Dir" "Type" "Detail")]))
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(send endpoints set-column-width 1 32 32 32)
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(send endpoints set-column-width 3 32 32 32)
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(send events set-column-width 1 32 32 32)
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(define (toolbar-button label [handler void])
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(new button%
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[label label]
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[min-width 32]
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[parent toolbar]
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[callback handler]))
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(define (toolbar-spacer)
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(new pane% [parent toolbar] [min-width 16] [stretchable-width #f]))
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;; (toolbar-button (left-over-arrow-icon #:color syntax-icon-color))
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;; (toolbar-button (right-over-arrow-icon #:color syntax-icon-color))
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;; (toolbar-spacer)
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(define pause-button
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(toolbar-button (pause-icon #:color halt-icon-color)
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(lambda (b e)
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(send pause-button enable #f)
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(send play-button enable #t)
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(send step-button enable #t)
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(call-with-semaphore
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mutex
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(lambda ()
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(set! stepping? #f))))))
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(define play-button
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(toolbar-button (play-icon #:color run-icon-color)
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(lambda (b e)
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(send pause-button enable #t)
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(send play-button enable #f)
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(send step-button enable #f)
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(call-with-semaphore
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mutex
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(lambda ()
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(set! stepping? #t)
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(when waiting?
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(set! waiting? #f)
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(semaphore-post to-vm)))))))
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(toolbar-spacer)
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(define step-button
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(toolbar-button (step-icon #:color run-icon-color)
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(lambda (b e)
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(call-with-semaphore
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mutex
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(lambda ()
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(when waiting?
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(set! waiting? #f)
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(semaphore-post to-vm)))))))
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(send play-button enable #f)
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(send step-button enable #f)
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;; (toolbar-spacer)
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;; (toolbar-button "Settings...")
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;; (toolbar-spacer)
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;; (toolbar-button (stop-sign-icon))
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(define state-text (new text%))
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(define state-canvas (new editor-canvas%
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[parent state-panel]
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[editor state-text]
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[label "State"]))
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(define controller-thread
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(thread
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(lambda ()
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(controller-thread-loop))))
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(define (current-timestamp)
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(define (p n w) (~a (exact-truncate n) #:width w #:align 'right #:pad-string "0"))
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(define d (current-date))
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(format "~a:~a:~a.~a ~a-~a-~a"
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(p (date-hour d) 2)
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(p (date-minute d) 2)
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(p (date-second d) 2)
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(p (/ (date*-nanosecond d) 1000000.0) 3)
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(date-year d)
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(p (date-month d) 2)
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(p (date-day d) 2)))
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(define (record-event! stamp dir type detail)
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(define n (send events get-number))
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(send events append stamp)
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(send events set-string n dir 1)
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(send events set-string n type 2)
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(send events set-string n (~a detail) 3)
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(send events set-first-visible-item
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(max 0 (- n (- (send events number-of-visible-items) 1)))))
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(define (format-action action)
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(cond
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[(core:yield? action)
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(values "Yield" "")]
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[(core:at-meta-level? action)
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(format-preaction "Meta" (core:at-meta-level-preaction action))]
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[else
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(format-preaction "" action)]))
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(define (format-preaction layer preaction)
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(define-values (type detail)
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(match preaction
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[(core:add-endpoint pre-eid role handler)
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(values "Sub" (string-append (format-role role) " " (~a pre-eid)))]
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[(core:delete-endpoint pre-eid reason)
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(values "Unsub" (format "~a ~v" pre-eid reason))]
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[(core:send-message body 'publisher)
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(values "Send" (~v body))]
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[(core:send-message body 'subscriber)
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(values "Feedback" (~v body))]
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[(core:spawn spec maybe-k child-debug-name)
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(values "Spawn" (~v child-debug-name))]
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[(core:quit #f reason)
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(values "Exit" (~v reason))]
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[(core:quit pid reason)
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(values "Kill" (format "~a ~v" pid reason))]))
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(values (string-append layer type) detail))
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(define (format-role r)
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(match-define (core:role orientation topic interest-type) r)
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(format "~a/~a ~v"
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(string-ref (symbol->string orientation) 0)
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(string-ref (symbol->string interest-type) 0)
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topic))
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(define (handle-from-vm x)
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(define now (current-timestamp))
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(match x
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[(core:transition state actions)
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(send state-text erase)
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(send state-text insert (pretty-format state))
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(let loop ((a actions))
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(cond
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[(pair? a) (loop (car a)) (loop (cdr a))]
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[(or (null? a) (eq? a #f) (void? a)) (void)]
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[else (define-values (type detail) (format-action a))
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(record-event! now "Act" type detail)]))
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(call-with-semaphore
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mutex
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(lambda ()
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(if stepping?
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(semaphore-post to-vm)
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(set! waiting? #t))))]
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[(cons meta? e)
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(define prefix (if meta? "Meta" ""))
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(match e
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[(core:presence-event role)
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(record-event! now "Evt" (string-append prefix "Presence") (format-role role))]
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[(core:absence-event role reason)
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(record-event! now "Evt" (string-append prefix "Absence")
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(string-append (format-role role) " " (~v reason)))]
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[(core:message-event _ message)
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(record-event! now "Evt" (string-append prefix "Recv") (~v message))])]))
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(define (controller-thread-loop)
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(sync (handle-evt from-vm
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(lambda (x)
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(handle-from-vm x)
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(controller-thread-loop)))))
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(super-new)
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(send frame show #t)
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))
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