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pict-of-state.rkt
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pict-of-state.rkt
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#lang racket
(provide pict-of-state)
(require pict)
(require (rename-in pict [text pict-text]))
(require racket/draw)
(require (only-in framework editor:get-current-preferred-font-size))
;;; This color palette has been checked with
;;; https://color.adobe.com/zh/create/color-accessibility
;; dark and light blue (#000096 & #0000C8 & #0000FF)
(define color-A-DD (make-object color% 0 0 150))
(define color-A-D (make-object color% 0 0 200))
(define color-A-L (make-object color% 0 0 255))
;; dark and light yellow (#FFBB00 & #FFDF40)
(define color-B-D (make-object color% 255 187 0))
(define color-B-L (make-object color% 255 223 64))
;; red (#FF7D6C)
(define color-C (make-object color% 255 127 121))
(define color-black (make-object color% 0 0 0))
(define color-white (make-object color% 255 255 255))
;; These color palettes for texts have been checked with
;; https://webaim.org/resources/contrastchecker/
(struct text-palette
(text background))
(define tp-A-DD (text-palette color-white color-A-DD))
(define tp-A-D (text-palette color-white color-A-D))
(define tp-A-L (text-palette color-white color-A-L))
(define tp-B-D (text-palette color-black color-B-D))
(define tp-B-L (text-palette color-black color-B-L))
(define tp-C (text-palette color-black color-C))
(define tp-white (text-palette color-black color-white))
(define tp-black (text-palette color-white color-black))
(define tp-stack tp-black)
(define tp-stack-frame tp-B-D)
(define tp-calling tp-B-D)
(define tp-called tp-A-DD)
(define tp-returning tp-A-L)
(define tp-returned tp-A-D)
(define tp-terminated tp-black)
(define tp-errored tp-C)
(define current-text-palette (make-parameter tp-white))
(define (current-text-color)
(text-palette-text (current-text-palette)))
(define (current-background-color)
(text-palette-background (current-text-palette)))
(define (text s)
(pre-text s 'modern))
(define (pre-text s font-family)
(define style
(cons (current-text-color)
(make-object font%
(editor:get-current-preferred-font-size)
font-family)))
(if (equal? s "")
(pict-text " " style)
(apply vl-append
(map
(lambda (s)
(pict-text s style))
(string-split s "\n")))))
(define (pict-of-state hide-closure? hide-env-lable?)
(define ((pict-of-focus heap) focus)
(match focus
[`("calling" ,app ,env ,ectx)
(parameterize ([current-text-palette tp-calling])
(plate (vl-append padding
(field "Calling" app)
(field "in" ectx)
(pict-env heap env))))]
[`("called" ,body ,env)
(parameterize ([current-text-palette tp-called])
(plate (vl-append padding
(field-label "Evaluating the function body")
(field-value body)
(pict-env heap env))))]
[`("returned" ,v ,env ,ectx)
(parameterize ([current-text-palette tp-returned])
(plate (vl-append padding
(field-label "Resuming the computation after return")
(field-value (string-replace ectx "□" v))
(pict-env heap env))))]
[`("returning" ,v)
(parameterize ([current-text-palette tp-returning])
(plate (vl-append padding
(field "Returning" v))))]
[`("terminated" ,v*)
(parameterize ([current-text-palette tp-terminated])
(plate (vl-append padding
(field-label "Terminated")
(field-value (string-join v* "\n")))))]
[`("errored")
(parameterize ([current-text-palette tp-errored])
(plate (vl-append padding
(field-label "Errored"))))]))
(define (main-pict stack focus heap)
(bg (ht-append padding
(vl-append padding
((pict-of-stack heap) stack)
((pict-of-focus heap) focus))
#;
(pict-of-heap heap))))
(define (pict-of-state state)
(define p
(match state
[`("calling" ,app ,env ,ectx ,stack ,heap)
(main-pict stack `("calling" ,app ,env ,ectx) heap)]
[`("called" ,body ,env ,stack ,heap)
(main-pict stack `("called" ,body ,env) heap)]
[`("returned" ,v ,env ,ectx ,stack ,heap)
(main-pict stack `("returned" ,v ,env ,ectx) heap)]
[`("returning" ,v ,stack ,heap)
(main-pict stack `("returning" ,v) heap)]
[`("terminated" ,v* ,heap)
(main-pict empty `("terminated" ,v*) heap)]
[`("errored" ,heap)
(main-pict empty `("errored") heap)]))
(define dim (max (pict-width p) (pict-height p)))
(scale p (min 1.2 (/ 700 (pict-height p)) (/ 1200 (pict-width p)))))
(define ((pict-of-stack heap) stack)
(parameterize ([current-text-palette tp-stack])
(box
(vl-append
padding
(field-label "Stack")
(apply vl-append
(map (pict-of-sf heap) (reverse stack)))))))
(define (is-env? heapitem)
(match-define (list addr hv) heapitem)
(match hv
[`("env" ,@_)
#t]
[else
#f]))
(define (pict-of-heap heap)
(blank)
#;
(pict-of-heapitems heap)
)
(define (heapitem-interesting? item)
(match-define `(,this-addr ,hv) item)
(and (string? this-addr) ;; string addresses means the address is not primitive (symbol address)
(if hide-closure?
(not (is-closure? hv))
#t)))
(define (is-closure? hv)
(match hv
[`(Closure ,@_) #t]
[else #f]))
#;
(define (pict-of-heapitems heapitems)
(let-values ([(envs others) (partition is-env?
(filter heapitem-interesting? heapitems))])
(ht-append
padding
(apply vl-append padding
(map pict-of-heapitem envs))
(apply vl-append padding
(map pict-of-heapitem others)))))
#;
(define (pict-of-heapitem item)
(match-define `(,this-addr ,hv) item)
(match hv
[`("env" ,env ,bindings)
(plate (vl-append
(field "@" this-addr)
(if hide-env-lable?
(blank)
(white (text "Environment Frame")))
(field-pict "bindings" (if (equal? this-addr '|@base-env|)
(field-value '...)
(apply vl-append padding
(map pict-of-binding
(sort bindings string<=? #:key first)))))
(field "Rest @" env))
color-env)]
[`("fun" ,env ,code)
(plate (vl-append padding
(field "@" this-addr)
(field "Environment @" env)
(field "Code" code))
color-closure)]
[`("vec" ,vec)
(plate (vl-append padding
(field "@" this-addr)
(field-pict "mvec" (apply hb-append padding (map field-value vec))))
color-vector)]
[`("cons" ,v1 ,v2)
(plate (vl-append padding
(field "@" this-addr)
(field-pict "cons" (apply hb-append padding (map field-value (list v1 v2)))))
color-cons)]))
(define (plate p)
(define w (pict-width p))
(define h (pict-height p))
(define r 10)
(cc-superimpose
(filled-rounded-rectangle
(+ (pict-width p) (* r 2))
(+ (pict-height p) (* r 2))
r
#:color (current-background-color))
p))
(define (box p)
(frame (bg (pad padding p))))
(define (pict-of-binding binding)
(match-define (list x v) binding)
(ht-append padding
(field-value x)
(field-label "↦")
(field-value v)))
(define padding 5)
(define (field-label name)
(pre-text name 'system))
(define (field-value value)
(parameterize ([current-text-palette tp-white])
(bg (let ([value-pict (text value)])
(cc-superimpose
(filled-rectangle
(+ 2 (pict-width value-pict))
(pict-height value-pict)
#:draw-border? #f
#:color (current-background-color))
value-pict)))))
(define (field-pict name p)
(ht-append padding (field-label name) p))
(define (field name value)
(field-pict name (field-value value)))
(define (bg p)
(cc-superimpose
(filled-rectangle
(pict-width p)
(pict-height p)
#:draw-border? #f
#:color (current-background-color))
p))
(define ((pict-of-sf heap) sf)
(match-define (list env ectx ann) sf)
(parameterize ([current-text-palette tp-stack-frame])
(bg (frame
(pad padding
(vl-append padding
(field-label "Waiting for a value")
(field "in" ectx)
#;(field "Environment @" env)
(pict-env heap env)))))))
(define (pict-env heap env)
(match-let ([`("env" ,env ,binding*) (first (dict-ref heap env))])
(let* ([binding* (sort binding* string<=? #:key first)]
[binding* (filter (lambda (kv) (not (equal? (first kv) (second kv)))) binding*)])
(if (empty? binding*)
(blank)
(field-pict "where" (apply vl-append padding (map pict-of-binding binding*)))))))
(define (pad n p)
(hc-append (blank n)
(vc-append (blank n) p (blank n))
(blank n)))
pict-of-state)