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|
(<- (any (+ (* `\` (backmatch :quo))
(if-not (backmatch :quo) 1))))
(backmatch :quo)) :quo)))
(defn fail [cause]
(defn mk [ln col]
{:kind :parse
:cause cause
:ln ln :col col})
~(error (cmt (* (line) (column)) ,mk)))
(defn req [id body]
~(+ (* ,;body) ,(fail (keyword :malformed- id))))
(defn kw [id body]
~(* ,id (> 1 :bound) ,(req id ~(:s+ ,;body))))
(defn comment-syntax [id open close]
................................................................................
(enter body ""))
(defn err->msg [e]
(defn err-span [h & m] [:span [:hl [:red h]] ": " ;m ])
(match e
{:kind :parse} (err-span "parse error"
(string (e :cause) " at ")
[:hl (string/format "%d:%d" (e :ln) (e :col))])
_ (error e)))
# _ (err-span "error"
# "something went wrong (" [:em (string e)] ")")))
(defn indent [n lst]
(map |(string (string/repeat "\t" n) $) lst))
................................................................................
[:ref _] :object
x (keyword x)))
(defn gdtype->ctype [t]
(match t
:void :void
:float :double
:int :int64_t
:bool :bool
[:array _] :gd_array
[:dictionary _] :gd_dictionary
[:ref _] :GDExtensionObjectPtr
# use an opaque wrapper struct defined in interface.h
x (string "gd_" (:say (:read <sym> t)))))
................................................................................
~(do (var ,acc ,init)
(loop ,binds
(set ,acc (do ,;body)))
,acc))
(defn unit-files [u]
(def h @[ `#pragma once` `#include "gdjn.h"` `#include "util.h"`
;(u :header-prefix)])
(def c @[
(string `#include "` (:stab (u :name)) `.h"`)
`typedef struct gdjn_vcall {`
` GDExtensionClassMethodPtrCall caller; `
` void* tgt;`
`} gdjn_vcall;`
................................................................................
:method (array/push (cls :methods) meth)
:impl (array/push (cls :impls) meth)))
)))
(def root (:new <cursor> :unit unit))
(each n ast (process n root))
(defn class-prefix [c & r]
(def pf (let [p (:prefix c)]
(if (empty? p) [] [p])))
(string/join ["gdjn_class" ;pf ;r] "_"))
(defn bind-methods [class]
(defn bind [f kind]
(def t-args (map (fn [[t] &] t)
(f :args)))
(def invocant
((unit :invocants) [(f :ret) t-args]))
(def invocant-ptr
((unit :invocants-ptr) [(f :ret) t-args]))
(def fp-t (func-ptr-t (gdtype->ctype (f :ret))
[(string "typeof("
(class-prefix (class :cursor)
(class :id))")*")
;(map gdtype->ctype t-args)]))
(def strings-lst @[])
(def strings
(cache (fn [idx text]
(def id (string "_priv_str_" idx))
(array/push strings-lst id text)
................................................................................
`,`])
:impl [`.return_value = `
;(prop-info (if (= :void (f :ret)) :nil
(f :ret)))]
)])
)
(def fn-path (class-prefix (f :cursor) "method" (f :id)))
(with-names [:s_methodName (f :id) ;strings-lst]
(if (not= kind :method) ""
(string fp-t " func = " fn-path ";"))
(string/format `auto info = (%s) {`
(case kind
:method "GDExtensionClassMethodInfo"
:impl "GDExtensionClassVirtualMethodInfo"))
................................................................................
(length t-args) ",")
;(indent 1 arg-info)
;(if (= kind :method) [
` .method_userdata = func,`
` .method_flags = GDEXTENSION_METHOD_FLAGS_DEFAULT,`
(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))
;(map |(bind $ :impl) (class :impls))) "}"))
(defn push-item [kind cursor item] # abuse hashtables for fun & profit
(array/push (unit kind) item)
(when (and cursor (cursor :doc))
(put (unit :doc) item (cursor :doc))))
(loop [c :in (unit :classes)]
(def id (class-prefix (c :cursor) (c :id)))
(def [id-ctor id-dtor
id-ctor-api
id-init id-create]
(map |(string id "_" $) ["new" "del"
"api_new" "init" "create"]))
(def id-base (as-> (c :base) b
................................................................................
(string "gdjn_class_" b))) #HAAACK
(when (not (empty? (c :impls)))
(def vtbl @[])
(loop [i :range [0 (length (c :impls))]
:let [f ((c :impls) i)]]
(def t-args (map (fn [[t] &] t)
(f :args)))
(def call (class-prefix (f :cursor) "method" (f :id)))
(def caller ((unit :invocants-ptr) [(f :ret) t-args]))
(put (c :vtbl-map) (f :id) i)
(array/push vtbl
(string "{.caller=" caller ", .tgt=" call "}"))
)
(let [vstr (string/join (map |(string "\n\t" $ ",") vtbl))
vwr (string "{" vstr "\n}") ]
................................................................................
(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
................................................................................
(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)] [
;(with-names [:name name]
`_t(stringName).equal(&name, method, &res);`
`if (res) {`
(string "\treturn (void*)&" id "_vtbl[" idx "];")
`}`)])
;(if (= :native (c :base-mode)) [`return nullptr;`]
# inherits from a gdextension class; call up
[(string/format "return %s_virt(data, method, hash);"
id-base)])
))
(def id-virt-call (class-prefix (c :cursor) (c :id) "virt_call"))
(array/push (unit :funcs) (:dec- <func-c> :void id-virt-call
[[:GDExtensionClassInstancePtr :inst]
[:GDExtensionConstStringNamePtr :method]
[:void* :vcall]
["const GDExtensionConstTypePtr*" :args]
[:GDExtensionTypePtr :ret]]
`auto c = (const gdjn_vcall*)vcall;`
`c -> caller(c -> tgt, inst, args, ret);`))
(array/push (unit :load)
;(with-names ["className" (c :id)
"superName" (c :base)]
"auto classDesc = (GDExtensionClassCreationInfo4) {"
` .is_virtual = false,`
(string "\t.is_abstract = " (if (c :abstract) "true" "false")",")
` .is_exposed = true,`
` .is_runtime = true,`
(string "\t.create_instance_func = " id-ctor-api ",")
................................................................................
(def binder (bind-methods c))
(array/concat (unit :load) binder)
)
(loop [f :in (unit :methods)]
(def class (class-prefix (f :cursor)))
(def cid (class-prefix (f :cursor) "method" (f :id)))
(def cfn (:dec <func-c> (gdtype->ctype (f :ret)) cid
[ [(string class "*") "me"]
;(map (fn [[t id dox]]
[(gdtype->ctype t) id])
(f :args))]
(f :text)))
(def arg-dox
................................................................................
(let [uf (unit-files unit)]
(:write stdout (case emit
"header" (lines->str (uf :header))
"loader" (lines->str (uf :impl))
(error :bad-cmd)))))
(defn main [& argv]
# (entry ;argv))
(try (entry ;argv)
([e] (:write stderr (style ;(err->msg e))))))
|
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|
(<- (any (+ (* `\` (backmatch :quo))
(if-not (backmatch :quo) 1))))
(backmatch :quo)) :quo)))
(defn fail [cause]
(defn mk [ln col]
{:kind :parse
:cause cause
:src (dyn *src-file* "<stdin>")
:ln ln :col col})
~(error (cmt (* (line) (column)) ,mk)))
(defn req [id body]
~(+ (* ,;body) ,(fail (keyword :malformed- id))))
(defn kw [id body]
~(* ,id (> 1 :bound) ,(req id ~(:s+ ,;body))))
(defn comment-syntax [id open close]
................................................................................
(enter body ""))
(defn err->msg [e]
(defn err-span [h & m] [:span [:hl [:red h]] ": " ;m ])
(match e
{:kind :parse} (err-span "parse error"
(string (e :cause) " at ")
[:hl (string/format "%s:%d:%d" (e :src) (e :ln) (e :col))])
_ (error e)))
# _ (err-span "error"
# "something went wrong (" [:em (string e)] ")")))
(defn indent [n lst]
(map |(string (string/repeat "\t" n) $) lst))
................................................................................
[:ref _] :object
x (keyword x)))
(defn gdtype->ctype [t]
(match t
:void :void
:float :double
:int :int64_t
:bool :uint8_t
[:array _] :gd_array
[:dictionary _] :gd_dictionary
[:ref _] :GDExtensionObjectPtr
# use an opaque wrapper struct defined in interface.h
x (string "gd_" (:say (:read <sym> t)))))
................................................................................
~(do (var ,acc ,init)
(loop ,binds
(set ,acc (do ,;body)))
,acc))
(defn unit-files [u]
(def h @[ `#pragma once` `#include "gdjn.h"`
;(u :header-prefix)])
(def c @[
(string `#include "` (:stab (u :name)) `.h"`)
`typedef struct gdjn_vcall {`
` GDExtensionClassMethodPtrCall caller; `
` void* tgt;`
`} gdjn_vcall;`
................................................................................
:method (array/push (cls :methods) meth)
:impl (array/push (cls :impls) meth)))
)))
(def root (:new <cursor> :unit unit))
(each n ast (process n root))
(defn class-prefix* [sep c begin r]
(def pf (let [p (:prefix c)]
(if (empty? p) [] [p])))
(string/join [;begin ;pf ;r] sep))
(defn class-prefix. [c & r]
(class-prefix* "." c [] r))
(defn class-prefix_ [c & r]
(class-prefix* "_" c ["gdjn_class"] r))
(defn bind-methods [class]
(defn bind [f kind]
(def t-args (map (fn [[t] &] t)
(f :args)))
(def invocant
|((unit :invocants) [(f :ret) t-args]))
(def invocant-ptr
|((unit :invocants-ptr) [(f :ret) t-args]))
(def fp-t (func-ptr-t (gdtype->ctype (f :ret))
[(string "typeof("
(class-prefix_ (class :cursor)
(class :id))")*")
;(map gdtype->ctype t-args)]))
(def strings-lst @[])
(def strings
(cache (fn [idx text]
(def id (string "_priv_str_" idx))
(array/push strings-lst id text)
................................................................................
`,`])
:impl [`.return_value = `
;(prop-info (if (= :void (f :ret)) :nil
(f :ret)))]
)])
)
(def fn-path (class-prefix_ (f :cursor) "method" (f :id)))
(with-names [:s_methodName (f :id) ;strings-lst]
(if (not= kind :method) ""
(string fp-t " func = " fn-path ";"))
(string/format `auto info = (%s) {`
(case kind
:method "GDExtensionClassMethodInfo"
:impl "GDExtensionClassVirtualMethodInfo"))
................................................................................
(length t-args) ",")
;(indent 1 arg-info)
;(if (= kind :method) [
` .method_userdata = func,`
` .method_flags = GDEXTENSION_METHOD_FLAGS_DEFAULT,`
(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);`)))
(def class-path (class-prefix* "_" (class :cursor) [] [(class :id)]))
(array/concat @[] "{" ;(with-names [:s_className class-path]
;(map |(bind $ :method) (class :methods))
;(map |(bind $ :impl) (class :impls))) "}"))
(defn push-item [kind cursor item] # abuse hashtables for fun & profit
(array/push (unit kind) item)
(when (and cursor (cursor :doc))
(put (unit :doc) item (cursor :doc))))
(loop [c :in (unit :classes)]
(def id (class-prefix_ (c :cursor) (c :id)))
(def [id-ctor id-dtor
id-ctor-api
id-init id-create]
(map |(string id "_" $) ["new" "del"
"api_new" "init" "create"]))
(def id-base (as-> (c :base) b
................................................................................
(string "gdjn_class_" b))) #HAAACK
(when (not (empty? (c :impls)))
(def vtbl @[])
(loop [i :range [0 (length (c :impls))]
:let [f ((c :impls) i)]]
(def t-args (map (fn [[t] &] t)
(f :args)))
(def call (class-prefix_ (f :cursor) "method" (f :id)))
(def caller ((unit :invocants-ptr) [(f :ret) t-args]))
(put (c :vtbl-map) (f :id) i)
(array/push vtbl
(string "{.caller=" caller ", .tgt=" call "}"))
)
(let [vstr (string/join (map |(string "\n\t" $ ",") vtbl))
vwr (string "{" vstr "\n}") ]
................................................................................
(with-names ["superName" (c :base)]
"super = _t(classdb).constructObject(&superName);")
[(string/format "super = %s_create();"
id-base)])
"return super;"))
(def icb-null "(&(GDExtensionInstanceBindingCallbacks){})")
(def class-path (class-prefix* "_" (c :cursor) [] [(c :id)]))
(array/push (unit :funcs)
(:dec <func-c> self-ref-t id-ctor []
(string `printf("creating object ` id `\n");`)
(string "typeof("id")* me = _alloc("id", 1);")
;(with-names ["className" class-path]
(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
................................................................................
(string id-init "(me, gdobj);"))
"return me;"))
(push-event :dtor id-dtor :void
[[:void* :_data]
[:GDExtensionClassInstancePtr :_ptr_me]]
|[(string "typeof("id")* me = _ptr_me;")
;$
(if (= :native (c :base-mode)) "_free(me);"
(string/format "%s_del(_data, &me -> super);"
id-base))])
(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]]
;(catseq [[name idx] :pairs (c :vtbl-map)]
[ `{bool res = false;`
;(with-names [:name name]
`_t(stringName).equal(&name, method, &res);`)
`if (res) {`
(string "\treturn (void*)&" id "_vtbl[" idx "];")
`}}`])
;(if (= :native (c :base-mode)) [`return nullptr;`]
# inherits from a gdextension class; call up
[(string/format "return %s_virt(data, method, hash);"
id-base)])
))
(def id-virt-call (class-prefix_ (c :cursor) (c :id) "virt_call"))
(array/push (unit :funcs) (:dec- <func-c> :void id-virt-call
[[:GDExtensionClassInstancePtr :inst]
[:GDExtensionConstStringNamePtr :method]
[:void* :vcall]
["const GDExtensionConstTypePtr*" :args]
[:GDExtensionTypePtr :ret]]
`auto c = (const gdjn_vcall*)vcall;`
`c -> caller(c -> tgt, inst, args, ret);`))
(def class-path (class-prefix* "_" (c :cursor) [] [(c :id)]))
(array/push (unit :load)
;(with-names ["className" class-path
"superName" (c :base)]
"auto classDesc = (GDExtensionClassCreationInfo4) {"
` .is_virtual = false,`
(string "\t.is_abstract = " (if (c :abstract) "true" "false")",")
` .is_exposed = true,`
` .is_runtime = true,`
(string "\t.create_instance_func = " id-ctor-api ",")
................................................................................
(def binder (bind-methods c))
(array/concat (unit :load) binder)
)
(loop [f :in (unit :methods)]
(def class (class-prefix_ (f :cursor)))
(def cid (class-prefix_ (f :cursor) "method" (f :id)))
(def cfn (:dec <func-c> (gdtype->ctype (f :ret)) cid
[ [(string class "*") "me"]
;(map (fn [[t id dox]]
[(gdtype->ctype t) id])
(f :args))]
(f :text)))
(def arg-dox
................................................................................
(let [uf (unit-files unit)]
(:write stdout (case emit
"header" (lines->str (uf :header))
"loader" (lines->str (uf :impl))
(error :bad-cmd)))))
(defn main [& argv]
(entry ;argv))
# (try (entry ;argv)
# ([e] (:write stderr (style ;(err->msg e)) "\n"))))
|