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# 🄯 AGPLv3
# ? compiles a godot class definition to C source
# > janet tool/class-compile.janet <class> (loader|header)
(def *src-file* (gensym))
(def parse-doc
(do
(def doc-parser (peg/compile '{
:hs (+ " " "\t")
:- "-"
:open-line (* (? " ") (? '(some (if-not "\n" 1))) "\n")
:single-line (* (? " ") (? '(some (* (not :hs) 1))) (any :hs) -1)
:mid-line (+ (* (any :hs) :- (? " ")
(? '(some (if-not "\n" 1))) "\n")
(* (? '(some (if-not "\n" 1))) "\n"))
................................................................................
:close-line (+ (* (any :hs) -1)
(* (any :hs) :- (? " ")
(? '(some (if-not (* (any :hs) -1) 1)))
(any :hs) -1))
:main (+ (* :open-line (any :mid-line) :close-line)
:single-line
'(any 1)) # admit defeat
}))
(fn parse-doc[str]
(peg/match doc-parser str))))
(def syntaxes
(do (def quot-syntax
'(nth 1 (unref (* (<- (+ `"` `'`) :quo)
................................................................................
(string "\t.has_return_value = "
(if (= :void (f :ret)) "false" "true") ",")
(string "\t.call_func = " invocant ",")
(string "\t.ptrcall_func = " invocant-ptr ",")
] [])
;ret-info
`};`
(string `printf("binding method %s\n",`
(string/format "%q" fn-path)
`);`)
(string `_t(classdb).`
(case kind
:method "registerExtensionClassMethod"
:impl "registerExtensionClassVirtualMethod")
`(gdjn_ctx -> gd.lib, &s_className, &info);`)))
(array/concat @[] "{" ;(with-names [:s_className (class :id)]
;(map |(bind $ :method) (class :methods))
................................................................................
;(if (= :native (c :base-mode))
(with-names ["superName" (c :base)]
"super = _t(classdb).constructObject(&superName);")
[(string/format "super = %s_create();"
id-base)])
"return super;"))
(array/push (unit :funcs)
(:dec <func-c> self-ref-t id-ctor []
(string "typeof("id")* me = _alloc("id", 1);")
;(with-names ["className" (c :id)]
(string/format "auto gdobj = %s();"
id-create)
`printf("constructed super object %p\n", gdobj);`
"_t(object).setInstance(gdobj, &className, me);"
(string id-init "(me, gdobj);"))
"return me;"))
(push-event :dtor id-dtor :void
[[:void* :_data]
[:GDExtensionClassInstancePtr :_ptr_me]]
|[(string "typeof("id")* me = _ptr_me;")
;$
"_free(me);"])
(def id-virt (class-prefix (c :cursor) (c :id) "virt"))
(array/push (unit :funcs) (:dec- <func-c> :void* id-virt
[[:void* :data]
[:GDExtensionConstStringNamePtr :method]
[:uint32_t :hash]]
`bool res = false;`
;(catseq [[name idx] :pairs (c :vtbl-map)] [
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# 🄯 AGPLv3
# ? compiles a godot class definition to C source
# > janet tool/class-compile.janet <class> (loader|header)
(def *src-file* (gensym))
(def parse-doc
(do (def doc-parser (peg/compile '{
:hs (+ " " "\t")
:- "-"
:open-line (* (? " ") (? '(some (if-not "\n" 1))) "\n")
:single-line (* (? " ") (? '(some (* (not :hs) 1))) (any :hs) -1)
:mid-line (+ (* (any :hs) :- (? " ")
(? '(some (if-not "\n" 1))) "\n")
(* (? '(some (if-not "\n" 1))) "\n"))
................................................................................
:close-line (+ (* (any :hs) -1)
(* (any :hs) :- (? " ")
(? '(some (if-not (* (any :hs) -1) 1)))
(any :hs) -1))
:main (+ (* :open-line (any :mid-line) :close-line)
:single-line
'(any 1)) # admit defeat
}))
(fn parse-doc[str]
(peg/match doc-parser str))))
(def syntaxes
(do (def quot-syntax
'(nth 1 (unref (* (<- (+ `"` `'`) :quo)
................................................................................
(string "\t.has_return_value = "
(if (= :void (f :ret)) "false" "true") ",")
(string "\t.call_func = " invocant ",")
(string "\t.ptrcall_func = " invocant-ptr ",")
] [])
;ret-info
`};`
(comment (string `printf("binding method %s\n",`
(string/format "%q" fn-path)
`);`))
(string `_t(classdb).`
(case kind
:method "registerExtensionClassMethod"
:impl "registerExtensionClassVirtualMethod")
`(gdjn_ctx -> gd.lib, &s_className, &info);`)))
(array/concat @[] "{" ;(with-names [:s_className (class :id)]
;(map |(bind $ :method) (class :methods))
................................................................................
;(if (= :native (c :base-mode))
(with-names ["superName" (c :base)]
"super = _t(classdb).constructObject(&superName);")
[(string/format "super = %s_create();"
id-base)])
"return super;"))
(def icb-null "(&(GDExtensionInstanceBindingCallbacks){})")
(array/push (unit :funcs)
(:dec <func-c> self-ref-t id-ctor []
(string "typeof("id")* me = _alloc("id", 1);")
;(with-names ["className" (c :id)]
(string/format "auto gdobj = %s();"
id-create)
#`printf("constructed super object %p\n", gdobj);`
"_t(object).setInstance(gdobj, &className, me);"
# register the instance as a binding so
# that other classes can access it. this
# is so dumb
"_t(object).setInstanceBinding("
" gdobj, gdjn_ctx -> gd.lib, me,"
icb-null
");"
(string id-init "(me, gdobj);"))
"return me;"))
(push-event :dtor id-dtor :void
[[:void* :_data]
[:GDExtensionClassInstancePtr :_ptr_me]]
|[(string "typeof("id")* me = _ptr_me;")
;$
"_free(me);"])
(def id-virt (class-prefix (c :cursor) (c :id) "virt"))
(array/push (unit :funcs)
(:dec* <func-c> [:inline :static]
self-ref-t (string id "_data")
[[:GDExtensionObjectPtr :self]]
"return _t(object).getInstanceBinding("
" self, gdjn_ctx -> gd.lib,"
icb-null
");"))
(array/push (unit :funcs) (:dec- <func-c> :void* id-virt
[[:void* :data]
[:GDExtensionConstStringNamePtr :method]
[:uint32_t :hash]]
`bool res = false;`
;(catseq [[name idx] :pairs (c :vtbl-map)] [
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