drewc__gurf__surf.scm

(declare (block) (standard-bindings) (extended-bindings))
(begin
  (define drewc/gurf/surf#surf-driver!
    (lambda ()
      (letrec* ((_min-sleep119_ '1e-5)
                (_max-sleep120_ '.05)
                (_sleep-incr121_ '1e-8)
                (_sleep122_ _min-sleep119_)
                (_sleepy123_
                 (lambda ()
                   (thread-sleep! (max _sleep122_ _max-sleep120_))
                   (if (< _sleep122_ _max-sleep120_)
                       (+ _sleep122_ _sleep-incr121_)
                       '#!void))))
        (let _lp125_ ()
          (letrec* ((_events?128_ (drewc/gurf/surf#gtk_surf_iteration)))
            (if _events?128_ (set! _sleep122_ _min-sleep119_) (_sleepy123_))
            (_lp125_))))))
  (define drewc/gurf/surf#current-surf-driver (make-parameter '#f))
  (define drewc/gurf/surf#start-surfing!
    (lambda ()
      (let ((_$e113_ (drewc/gurf/surf#current-surf-driver)))
        (if _$e113_
            (values _$e113_)
            (begin
              (drewc/gurf/surf#setup)
              (let ((_drv116_
                     (gerbil/gambit/threads#spawn
                      drewc/gurf/surf#surf-driver!)))
                (drewc/gurf/surf#current-surf-driver _drv116_)
                _drv116_))))))
  (define drewc/gurf/surf#surf__%
    (lambda (_uri92_ _rclient93_)
      (drewc/gurf/surf#start-surfing!)
      (let ((_client95_ (drewc/gurf/surf#newclient _rclient93_)))
        (drewc/gurf/surf#showview _client95_)
        (drewc/gurf/surf#loaduri _client95_ _uri92_)
        (drewc/gurf/surf#updatetitle _client95_)
        (drewc/gurf/surf#current-surf-client _client95_)
        _client95_)))
define drewc/gurf/surf#surf__0
    (lambda ()
      (let* ((_uri101_ '"about:blank")
             (_rclient103_ (drewc/gurf/surf#current-surf-client)))
        (drewc/gurf/surf#surf__% _uri101_ _rclient103_))))
  (define drewc/gurf/surf#surf__1
    (lambda (_uri105_)
      (let ((_rclient107_ (drewc/gurf/surf#current-surf-client)))
        (drewc/gurf/surf#surf__% _uri105_ _rclient107_))))
  (define drewc/gurf/surf#surf
    (lambda _g3730_
      (let ((_g3729_ (let () (declare (not safe)) (##length _g3730_))))
        (cond ((let () (declare (not safe)) (##fx= _g3729_ 0))
               (apply drewc/gurf/surf#surf__0 _g3730_))
              ((let () (declare (not safe)) (##fx= _g3729_ 1))
               (apply drewc/gurf/surf#surf__1 _g3730_))
              ((let () (declare (not safe)) (##fx= _g3729_ 2))
               (apply drewc/gurf/surf#surf__% _g3730_))
              (else
               (##raise-wrong-number-of-arguments-exception
                drewc/gurf/surf#surf
                _g3730_))))))
  (define drewc/gurf/surf#surf-clients
    (lambda ()
      (let _lp87_ ((_c89_ (drewc/gurf/surf#clients)))
        (if (not _c89_)
            '()
            (cons _c89_ (_lp87_ (drewc/gurf/surf#Client-next _c89_)))))))
  (define drewc/gurf/surf#current-surf-client (make-parameter '#f))
  (define-macro (define-guard guard defn)
    (if (eval `(cond-expand (,guard #t) (else #f)))
        '(begin)
        (begin (eval `(define-cond-expand-feature ,guard)) defn)))
  (define-macro (define-c-lambda id args ret #!optional (name #f))
    (let ((name (or name (symbol->string id))))
      `(define ,id (c-lambda ,args ,ret ,name))))
  (define-macro (define-const symbol)
    (let* ((str (symbol->string symbol))
           (ref (string-append "___return (" str ");")))
      `(define ,symbol ((c-lambda () int ,ref)))))
  (define-macro (define-const* symbol #!optional (ccond #f))
    (let* ((str (symbol->string symbol))
           (code (string-append
define-macro (define-const* symbol #!optional (ccond #f))
    (let* ((str (symbol->string symbol))
           (code (string-append
                  "#if "
                  (or ccond (string-append "defined(" str ")"))
                  "\n"
                  "___return (___FIX ("
                  str
                  "));\n"
                  "#else \n"
                  "___return (___FAL);\n"
                  "#endif")))
      `(define ,symbol ((c-lambda () scheme-object ,code)))))
  (define-macro (define-with-errno symbol ffi-symbol args)
    `(define (,symbol ,@args)
       (declare (not interrupts-enabled))
       (let ((r (,ffi-symbol ,@args)))
         (if (##fx< r 0) (##fx- (##c-code "___RESULT = ___FIX (errno);")) r))))
  (define-macro (define-c-struct
                 struct
                 #!optional
                 (members '())
                 release-function)
    (let* ((struct-str (symbol->string struct))
           (struct-ptr (string->symbol (string-append struct-str "*")))
           (shallow-ptr
            (string->symbol (string-append struct-str "-shallow-ptr*")))
           (borrowed-ptr
            (string->symbol (string-append struct-str "-borrowed-ptr*")))
           (string-types
            '(char-string
              nonull-char-string
              UTF-8-string
              nonnull-UTF-8-string
              UTF-16-string
              nonnull-UTF16-string))
          (string-compat-required?
            (let loop ((m members))
              (cond ((null? m) #f)
                    ((member (cdr (car m)) string-types) #t)
                    (else (loop (cdr m))))))
           (string-setter-body
            (lambda (member-name)
              (let ((m (string-append "___arg1->" member-name)))
                (string-append
                 "if("
                 m
                 " == NULL)"
                 "\n"
                 m
                 "= strdup(___arg2);"
                 "\n"
                 "else if (strcmp("
                 m
                 ", ___arg2) != 0) {"
                 "\n"
                 "free("
                 m
                 ");"
                 "\n"
                 m
                 "= strdup(___arg2);"
                 "\n"
                 "}"
                 "\n"
                 "___return;"
                 "\n"))))
           (default-free-body
            (and string-compat-required?
                 (string-append
                  "___SCMOBJ "
                  struct-str
                  "_ffi_free (void *ptr) {"
                  "\n"
                  "struct "
                  struct-str
                  " *obj = (struct "
                  struct-str
                  "*) ptr;"
                  "\n"
                  (apply string-append
                         (map (lambda (m)
                                (cond ((memq (cdr m) string-types)
                                       (let ((mem-name
                                              (symbol->string (car m))))
                                         (string-append
                                          "if(obj->"
                                          mem-name
                                          ") "
                                          "free(obj->"
                                          mem-name
                                          ");"
                                          "\n")))
                                      (else "")))
                              members))
                  "free(obj);"
                  "\n"
                  "return ___FIX (___NO_ERR);"
                  "\n"
                  "}")))
           (release-function
            (or release-function
                (if string-compat-required?
                    (string-append struct-str "_ffi_free")
                    "ffi_free")))
           (string-compat-types
            (if string-compat-required?
                `((c-declare ,default-free-body)
                  (c-define-type
                   ,shallow-ptr
                   (pointer ,struct (,struct-ptr) "ffi_free")))
                '())))
      `(begin
         (c-define-type ,struct (struct ,struct-str))
         (c-define-type
          ,struct-ptr
          (pointer ,struct (,struct-ptr) ,release-function))
         (c-define-type ,borrowed-ptr (pointer ,struct (,struct-ptr)))
         ,@string-compat-types
         (define ,(string->symbol (string-append struct-str "-ptr?"))
           (lambda (obj)
             (and (foreign? obj) (equal? (foreign-tags obj) '(,struct-ptr)))))
         ,@(apply append
                  (map (lambda (m)
                         (let* ((member-name (symbol->string (car m)))
                                (member-type (cdr m))
                                (getter-name
                                 (string-append struct-str "-" member-name))
                                (setter-body
                                 (cond ((member member-type string-types)
                                        (string-setter-body member-name))
                                       (else
                                        (string-append
                                         "___arg1->"
                                         member-name
                                         " = ___arg2;"
                                         "\n"
                                         "___return;"
                                         "\n")))))
                           `((define ,(string->symbol getter-name)
                               (c-lambda
                                (,struct-ptr)
                                ,member-type
                                ,(string-append
                                  "___return(___arg1->"
                                  member-name
                                  ");")))
                             (define ,(string->symbol
                                       (string-append getter-name "-set!"))
                               (c-lambda
                                (,struct-ptr ,member-type)
                                void
                                ,setter-body)))))
                       members))
         (define ,(string->symbol (string-append "malloc-" struct-str))
           (c-lambda
            ()
            ,struct-ptr
            ,(string-append
              "struct "
              struct-str
              "* var = (struct "
              struct-str
              " *) malloc(sizeof(struct "
              struct-str
              "));"
              "\n"
              "if (var == NULL)"
              "\n"
              "    ___return (NULL);"
              "\n"
              "memset(var, 0, sizeof(struct "
              struct-str
              "));"
              "___return(var);")))
         (define ,(string->symbol (string-append "ptr->" struct-str))
           (c-lambda (,struct-ptr) ,struct "___return(*___arg1);"))
         (define ,(string->symbol
                   (string-append "malloc-" struct-str "-array"))
           (c-lambda
            (unsigned-int32)
            ,(if string-compat-required? shallow-ptr struct-ptr)
            ,(string-append
              "struct "
              struct-str
              " *arr_var=(struct "
              struct-str
              " *) malloc(___arg1*sizeof(struct "
              struct-str
              "));"
              "\n"
              "if (arr_var == NULL)"
              "\n"
              "    ___return (NULL);"
              "\n"
              "memset(arr_var, 0, ___arg1*sizeof(struct "
              struct-str
              "));"
              "\n"
              "___return(arr_var);")))
         (define ,(string->symbol (string-append struct-str "-array-ref"))
           (c-lambda
            (,struct-ptr unsigned-int32)
            ,borrowed-ptr
            "___return (___arg1 + ___arg2);"))
         (define ,(string->symbol (string-append struct-str "-array-set!"))
           (c-lambda
            (,struct-ptr unsigned-int32 ,struct-ptr)
            void
            "*(___arg1 + ___arg2) = *___arg3; ___return;")))))
  (c-declare "#include <stdlib.h>")
  (c-declare "#include <string.h>")
  (c-declare "#include <errno.h>")
  (c-declare "static ___SCMOBJ ffi_free (void *ptr);")
 (c-declare
   "#ifndef ___HAVE_FFI_U8VECTOR\n#define ___HAVE_FFI_U8VECTOR\n#define U8_DATA(obj) ___CAST (___U8*, ___BODY_AS (obj, ___tSUBTYPED))\n#define U8_LEN(obj) ___HD_BYTES (___HEADER (obj))\n#endif")
  (namespace
   ("drewc/gurf/surf#"
    evalscript
    Client-targeturi
    Client-title
    Client-next
    Client*
    Client
    updatetitle
    gtk_surf_iteration
    showview
    loaduri
    clients
    newclient
    setup))
  (c-declare "#include \"surf/surf.c\"")
  (define-c-lambda setup () void "setup")
  (c-declare "int ____nofreeclient(Client *c){ return 0;}")
  (define-c-struct
   Client
   ((title . char-string)
    (targeturi . char-string)
    (next . Client-borrowed-ptr*))
   "____nofreeclient")
  (define-c-lambda newclient (Client*) Client* "newclient")
  (define-c-lambda
   showview
   (Client*)
   void
   "showview(NULL, ___arg1); ___return;")
  (define-c-lambda
   loaduri
   (Client* char-string)
   void
   "Arg arg; arg.v = ___arg2 ; loaduri(___arg1, &arg); ___return;")
  (define-c-lambda updatetitle (Client*) void "updatetitle")
 (define-c-lambda
   evalscript
   (Client-borrowed-ptr* char-string)
   void
   "evalscript(___arg1, \"%s\", ___arg2); ___return;")
  (define-c-lambda clients () Client* "___return(clients);")
  (define-c-lambda
   gtk_surf_iteration
   ()
   bool
   "gboolean res = g_main_context_pending(NULL);\n      while (g_main_context_pending(NULL)) {\n        g_main_context_iteration(NULL, FALSE);\n     }; ___return(res);")
  (c-declare
   "#ifndef ___HAVE_FFI_FREE\n#define ___HAVE_FFI_FREE\n___SCMOBJ ffi_free (void *ptr)\n{\n free (ptr);\n return ___FIX (___NO_ERR);\n}\n#endif"))