%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2010. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
%%%-------------------------------------------------------------------
%%% File : gl_gen_c.erl
%%% Author : Dan Gudmundsson <[email protected]>
%%% Description :
%%%
%%% Created : 25 Apr 2007 by Dan Gudmundsson <[email protected]>
%%%-------------------------------------------------------------------
-module(gl_gen_c).
-compile(export_all).
-include("gl_gen.hrl").
-import(lists, [foldl/3,foldr/3,reverse/1, keysearch/3, map/2, filter/2, max/1]).
-import(gen_util, [lowercase/1, lowercase_all/1, uppercase/1, uppercase_all/1,
open_write/1, close/0, c_copyright/0, w/2,
args/3, strip_name/2]).
-import(wx_gen, [next_id/1]).
gen(GLFuncs, GLUFuncs) ->
gen_defines(GLFuncs,GLUFuncs),
gl_gen_init(GLFuncs),
glu_gen_init(GLUFuncs),
%% Marshal funcs
open_write("../c_src/gen/gl_funcs.cpp"),
c_copyright(),
w("/***** This file is generated do not edit ****/~n~n", []),
w("#include <stdio.h>~n", []),
w("#include <string.h>~n", []),
w("#include \"../egl_impl.h\"~n", []),
w("#include \"gl_fdefs.h\"~n", []),
w("~nint gl_error_op;~n", []),
w("void egl_dispatch(int op, char *bp, ErlDrvPort port, ErlDrvTermData caller, char *bins[]){~n",
[]),
w(" gl_error_op = op;~n", []),
w(" switch(op)~n{~n",[]),
w(" case 5000:~n erl_tess_impl(bp, port, caller);~n break;~n", []),
[funcs(F) || F <- GLUFuncs],
[funcs(F) || F <- GLFuncs],
w("}} /* The End */~n~n",[]),
close().
funcs([F1|Fs]) when is_list(F1) ->
put(current_func,F1),
func(get(F1)),
erase(current_func),
funcs(Fs);
funcs([]) -> ok;
funcs(F) ->
put(current_func,F),
func(get(F)),
erase(current_func).
func(#func{where=erl}) -> ok;
func(#func{id=Id,alt={has_vector,_,FuncName}}) ->
#func{name=Name,type=T,params=As} = get(FuncName),
w("case ~p: { // ~s~n", [Id,Name]),
put(bin_count,-1),
As1 = declare_vars(T, As),
As2 = decode_args(As1),
As3 = call_gl(Name,T,As2),
build_return_vals(T,As3),
free_args(),
w("}; break;~n", []);
func(#func{name=Name,id=Id,type=T,params=As,alt=_Alt}) ->
w("case ~p: { // ~s~n", [Id,Name]),
put(bin_count,-1),
As2 = decode_args(As),
declare_vars(T, As), %% Unusal order but it's c++
As3 = call_gl(Name,T,As2),
build_return_vals(T,As3),
free_args(),
w("}; break;~n", []).
declare_vars(void,Ps) ->
[declare_var(P) || P <- Ps];
declare_vars(T, Ps) ->
declare_var(#arg{name="result",in=false,type=T}),
[declare_var(P) || P <- Ps].
declare_var(A=#arg{where=erl}) -> A;
declare_var(A=#arg{name=N,in=false,type=#type{name=T,base=B,single={tuple,Sz}}}) ->
true = is_number(Sz), %% Assert
w(" ~s ~s[~p] = {~s};~n", [T,N,Sz,args(fun zero/1,",",lists:duplicate(Sz,B))]),
A;
declare_var(A=#arg{name=N,in=false,type=#type{name=T,base=B,single={list,Sz}}}) when is_number(Sz) ->
w(" ~s ~s[~p] = {~s};~n", [T,N,Sz,args(fun zero/1,",",lists:duplicate(Sz,B))]),
A;
declare_var(A=#arg{name=N,in=false,type=#type{name=T,single={list,ASz,_USz},mod=[]}}) ->
true = is_list(ASz), %% Assert
w(" ~s *~s;~n", [T,N]),
w(" ~s = (~s *) driver_alloc(sizeof(~s) * *~s);~n", [N,T,T,ASz]),
store_free(N),
A;
declare_var(A=#arg{name=N,in=false,type=#type{name=T,base=binary,size=Sz}}) ->
true = is_number(Sz), %% Assert
w(" ~s ~s[~p];~n", [T,N,Sz]),
A;
declare_var(A=#arg{in=false, type=#type{name="GLUquadric",by_val=false,single=true}}) ->
A;
declare_var(A=#arg{name=N,in=false,
type=#type{name=T,base=B,by_val=false,single=true}}) ->
w(" ~s ~s[1] = {~s};~n", [T,N,zero(B)]),
A;
declare_var(A=#arg{where=_}) ->
A.
zero(float) -> "0.0";
zero(_) -> "0".
store_free(N) ->
case get(free_args) of
undefined -> put(free_args, [N]);
List -> put(free_args, [N|List])
end.
free_args() ->
case get(free_args) of
undefined -> ignore;
List ->
erase(free_args),
[w(" driver_free(~s);~n", [Arg]) || Arg <- List]
end.
decode_args(As0) ->
{As,_Align} = lists:mapfoldl(fun decode_arg/2,0,As0),
As.
decode_arg(P=#arg{where=erl},A) -> {P,A};
decode_arg(P=#arg{where=c},A) -> {P,A};
decode_arg(P=#arg{in=false},A) -> {P,A};
decode_arg(P=#arg{name=Name,type=#type{name=Type,base=binary}},A0) ->
w(" ~s *~s = (~s *) bins[~p];~n", [Type,Name,Type,next_id(bin_count)]),
{P, A0};
decode_arg(P=#arg{name=Name,type=#type{name=Type,base=memory}},A0) ->
w(" ~s *~s = (~s *) bins[~p];~n", [Type,Name,Type,next_id(bin_count)]),
{P, A0};
decode_arg(P=#arg{name=Name,type=#type{name=T,base=string,single=list}},A0) ->
A = align(4,A0),
w(" int * ~sLen = (int *) bp; bp += 4;~n", [Name]),
w(" int * ~sTotSize = (int *) bp; bp += 4;~n",[Name]),
%% w(" if(*~sLen > 256) *~sLen = 256;", []),
w(" ~s **~s;~n", [T,Name]),
w(" ~s = (~s **) driver_alloc(sizeof(~s *) * *~sLen);~n",[Name, T, T, Name]),
store_free(Name),
w(" for(int i=0;i<*~sLen;i++) {~n", [Name]),
w(" ~s[i] = (~s *) bp; bp += 1+strlen(bp);};~n",[Name,T]),
w(" bp += (8 - ((~p + *~sTotSize) % 8)) % 8;~n",[A,Name]),
{P, 0};
decode_arg(P=#arg{name=Name,type=#type{size=Sz,single=list,name=Type}},A0) ->
A = align(max([Sz,4]),A0),
w(" int * ~sLen = (int *) bp; bp += ~p;~n", [Name, max([4,Sz])]),
w(" ~s * ~s = (~s *) bp; ", [Type,Name,Type]),
w(" bp += (8-((*~sLen*~p+~p)%8))%8;~n", [Name,Sz,A]),
{P, 0};
decode_arg(P=#arg{name=Name,type=#type{size=TSz,name=Type,single={tuple,undefined}}},A0) ->
A = align(TSz,A0),
w(" int *~sLen = (int *) bp; bp += ~p;~n", [Name, max([4,TSz])]),
if TSz =:= 4 ->
w(" ~s *~s = (~s *) bp; bp += *~sLen*4+((*~sLen)+~p)%2*4;~n",
[Type,Name,Type, Name,Name, A div 4]);
TSz =:= 8 ->
w(" ~s *~s = (~s *) bp; bp += *~sLen*8;~n", [Type,Name,Type,Name])
end,
{P, 0};
decode_arg(P=#arg{name=Name,type=#type{size=BSz,name=Type,single={tuple,TSz}}},A0) ->
A = align(BSz,TSz,A0),
w(" ~s * ~s = (~s *) bp; bp += ~p;~n", [Type,Name,Type,BSz*TSz]),
{P, A};
decode_arg(P=#arg{name=Name,type=#type{size=BSz,name=Type,single={list,TSz}}},A0) ->
A = align(BSz,TSz,A0),
w(" ~s * ~s = (~s *) bp; bp += ~p;~n", [Type,Name,Type,BSz*TSz]),
{P, A};
decode_arg(P=#arg{name=Name,type=#type{name=Type,base=guard_int}},A0) ->
A = align(4,A0),
w(" ~s *~s = (~s *) * (int *) bp; bp += 4;~n", [Type,Name,Type]),
{P, A};
decode_arg(P=#arg{name=Name,type=#type{name=Type,base=string,single=true}},A0) ->
w(" ~s *~s = (~s *) bp;~n", [Type,Name,Type]),
w(" int ~sLen = strlen((char *)~s); bp += ~sLen+1+((8-((1+~sLen+~p)%8))%8);~n",
[Name,Name,Name,Name,A0]),
{P, 0};
decode_arg(P=#arg{name=Name,
type=#type{name=Type,size=8,base=int,by_val=true,ref=undefined}},A0) ->
A = align(8,A0),
w(" ~s ~s = (~s) * (GLuint64EXT *) bp; bp += 8;~n", [Type,Name,Type]),
{P, A};
decode_arg(P=#arg{name=Name,type=#type{name=Type="GLUquadric",size=8,base=int}},A0) ->
A = align(8,A0),
w(" ~s * ~s = (~s *) * (GLuint64EXT *) bp; bp += 8;~n", [Type,Name,Type]),
{P, A};
decode_arg(P=#arg{name=Name,
type=#type{name=Type,size=Sz,by_val=true,ref=undefined}},A0) ->
A = align(Sz,A0),
w(" ~s *~s = (~s *) bp; bp += ~p;~n", [Type,Name,Type,Sz]),
{P, A};
decode_arg(P=#arg{name=Name,type=#type{size=BSz,name=Type,single={tuple_list,TSz}}},A0) ->
A = align(BSz,TSz,A0),
w(" int *~sLen = (int *) bp; bp += ~p;~n", [Name, max([4,BSz])]),
w(" ~s * ~s = (~s *) bp; bp += *~sLen*~p;~n", [Type,Name,Type,Name,BSz*TSz]),
{P, A};
decode_arg(P=#arg{name=Name, type=#type{name=Type,size=Sz,by_val=false,
ref={pointer,1}, mod=[const]}},
A0) ->
A = align(Sz,A0),
w(" ~s *~s = (~s *) bp; bp += ~p;~n", [Type,Name,Type,Sz]),
{P, A};
decode_arg(P, _A) ->
?error({unhandled_type, {P#arg.name,P#arg.type,_A}}).
align(Size, PreAlign) ->
align(Size,1,PreAlign).
align(1,N,A) -> (A+1*N+0) rem 8;
align(2,N,A) when (A rem 2) =:= 0 -> (A+2*N+0) rem 8;
align(2,N,A) when (A rem 2) =:= 1 -> a_str(1),(A+2*N+1) rem 8;
align(4,N,A) when (A rem 4) =:= 0 -> (A+4*N+0) rem 8;
align(4,N,A) when (A rem 4) =:= 1 -> a_str(3),(A+4*N+3) rem 8;
align(4,N,A) when (A rem 4) =:= 2 -> a_str(2),(A+4*N+2) rem 8;
align(4,N,A) when (A rem 4) =:= 3 -> a_str(1),(A+4*N+1) rem 8;
align(8,_,0) -> 0;
align(8,_,1) -> a_str(7),0;
align(8,_,2) -> a_str(6),0;
align(8,_,3) -> a_str(5),0;
align(8,_,4) -> a_str(4),0;
align(8,_,5) -> a_str(3),0;
align(8,_,6) -> a_str(2),0;
align(8,_,7) -> a_str(1),0.
a_str(P) -> w(" bp += ~p;~n", [P]).
call_gl(Name,void,As) ->
Args = args(fun call_arg/1, ",", As),
w(" we~s(~s);~n", [Name,Args]),
As;
call_gl(Name,T=#type{},As) ->
Args = args(fun call_arg/1, ",", As),
Type = result_type(T),
w(" ~s result = we~s(~s);~n", [Type,Name,Args]),
As.
result_type(#type{name=T, ref=undefined}) -> T;
result_type(#type{name=T, ref={pointer,1}, mod=Mods}) ->
mod(Mods) ++ T ++ " * ".
call_arg(#arg{alt={length,Alt},type=#type{}}) ->
"*" ++ Alt ++ "Len";
call_arg(#arg{alt={constant,Alt},type=#type{}}) ->
Alt;
call_arg(#arg{name=Name,type=#type{single={tuple, _}}}) ->
Name;
call_arg(#arg{name=Name,type=#type{single={list, _}}}) ->
Name;
call_arg(#arg{name=Name,type=#type{size=8,base=int,ref=undefined}}) ->
Name;
call_arg(#arg{name=Name,type=#type{ref=undefined}}) ->
"*" ++ Name;
call_arg(#arg{name=Name,type=#type{base=guard_int}}) ->
Name;
call_arg(#arg{name=Name,type=#type{base=string,ref={pointer,2},mod=[const]}}) ->
"(const GLchar **) " ++ Name;
call_arg(#arg{name=Name,type=#type{size=8,base=int,ref={pointer,1}}}) ->
Name;
call_arg(#arg{name=Name,type=#type{}}) ->
Name.
build_return_vals(Type,As) ->
case calc_sizes(Type,As) of
{0,none,0} -> %% Sync memory access functions
Any = fun(#arg{type=#type{base=B}}) -> B =:= memory end,
case lists:any(Any, As) of
false -> ok;
true ->
w(" int AP = 0; ErlDrvTermData rt[6];~n",[]),
w(" rt[AP++]=ERL_DRV_ATOM;"
" rt[AP++]=driver_mk_atom((char *) \"_egl_result_\");~n",[]),
w(" rt[AP++]=ERL_DRV_ATOM;"
" rt[AP++]=driver_mk_atom((char *) \"ok\");~n",[]),
w(" rt[AP++] = ERL_DRV_TUPLE; rt[AP++] = 2;~n",[]),
w(" driver_send_term(port,caller,rt,AP);~n",[]),
ok
end;
{Val,Vars,Cnt} ->
ExtraTuple = if Cnt > 1 -> 2; true -> 0 end,
CSize = if Vars =:= none ->
Sz = integer_to_list(Val+4+ExtraTuple),
w(" int AP = 0; ErlDrvTermData rt[~s];~n",[Sz]),
Sz;
true ->
Sz = integer_to_list(Val+4+ExtraTuple) ++ " + " ++ Vars,
w(" int AP = 0; ErlDrvTermData *rt;~n",[]),
w(" rt = (ErlDrvTermData *) "
"driver_alloc(sizeof(ErlDrvTermData)*(~s));~n", [Sz]),
Sz
end,
w(" rt[AP++]=ERL_DRV_ATOM; rt[AP++]=driver_mk_atom((char *) \"_egl_result_\");~n",[]),
FreeList = build_ret_types(Type,As),
case Cnt of
1 -> ok;
_ ->
w(" rt[AP++] = ERL_DRV_TUPLE; rt[AP++] = ~p;~n",[Cnt])
end,
w(" rt[AP++] = ERL_DRV_TUPLE; rt[AP++] = 2;~n",[]),
%%w(" if (AP != ~s ) fprintf(stderr, \"%d: ERROR AP mismatch %d %d\\r\\n\",__LINE__,AP,~s);~n",
%% [CSize,CSize]),
w(" driver_send_term(port,caller,rt,AP);~n",[]),
case Vars of
none -> ignore;
_ ->
w(" driver_free(rt);~n", [])
end,
[w(" ~s~n", [Name]) || Name <- FreeList],
ok
end.
calc_sizes(Type,As) ->
TSz = case return_size("result", Type) of
{0, none} ->
{0, none, 0};
{Sz,Vars} ->
{Sz,Vars, 1}
end,
Calc = fun(#arg{name=N,in=False,where=W,type=T},{Sz,Vars, Cnt})
when False =/= true, W=/= c ->
case return_size(N, T) of
{Val, none} -> {Sz+Val, Vars, Cnt+1};
{Val, Var} when Vars =:= none ->
{Sz+Val, Var,Cnt+1};
{Val, Var} when Vars =:= none ->
{Sz+Val, Var ++ " + " ++ Vars,Cnt+1}
end;
(_,Acc) -> Acc
end,
foldl(Calc, TSz, As).
return_size(_N,void) -> {0, none};
return_size(_N,#type{base=binary}) -> {4, none};
return_size(_N,#type{single=true}) -> {2,none};
return_size(_N,#type{single={tuple,Sz}}) -> {Sz*2+2, none};
return_size(_N,#type{name="GLubyte",single={list,null}}) ->{3, none};
return_size(_N,#type{single={list,Sz}}) -> {Sz*2+3, none};
return_size(_N,#type{base=string,single={list,_,_}}) -> {3, none};
return_size(_N,#type{single={list,_,Sz}}) -> {3, "(*" ++Sz++")*2"}.
build_ret_types(void,Ps) ->
Calc = fun(#arg{name=N,in=False,where=W,type=T},Free)
when False =/= true, W=/= c ->
case build_ret(N, False, T) of
ok -> Free;
Other -> [Other|Free]
end;
(_,Free) -> Free
end,
lists:foldl(Calc, [], Ps);
build_ret_types(Type,Ps) ->
build_ret("result", out, Type),
Calc = fun(#arg{name=N,in=False,where=W,type=T},Free)
when False =/= true, W=/= c ->
case build_ret(N, False, T) of
ok -> Free;
Other -> [Other|Free]
end;
(_,Free) -> Free
end,
lists:foldl(Calc, [], Ps).
build_ret(Name,_Q,#type{name=_T,base=int,single=true,by_val=true}) ->
w(" rt[AP++] = ERL_DRV_INT; rt[AP++] = (ErlDrvSInt) ~s;~n", [Name]);
build_ret(Name,_Q,#type{name=_T,base=bool,single=true,by_val=true}) ->
w(" rt[AP++] = ERL_DRV_INT; rt[AP++] = (ErlDrvSInt) ~s;~n", [Name]);
build_ret(Name,_Q,#type{name="GLUquadric",base=int}) ->
w(" rt[AP++] = ERL_DRV_INT; rt[AP++] = (ErlDrvSInt) ~s;~n", [Name]);
build_ret(Name,_Q,#type{name=_T,base=int,single=true,by_val=false}) ->
w(" rt[AP++] = ERL_DRV_INT; rt[AP++] = (ErlDrvSInt) *~s;~n", [Name]);
build_ret(Name,_Q,#type{name=_T,base=bool,single=true,by_val=false}) ->
w(" rt[AP++] = ERL_DRV_INT; rt[AP++] = (ErlDrvSInt) *~s;~n", [Name]);
build_ret(Name,_Q,#type{name=_T,size=4,base=float,single=true,by_val=false}) ->
w(" GLdouble ~sConv = (double) *~s; \n",[Name,Name]),
w(" rt[AP++] = ERL_DRV_FLOAT; rt[AP++] = (ErlDrvTermData) &~sConv;~n", [Name]);
build_ret(Name,_Q,#type{name=_T,size=8,base=float,single=true,by_val=false}) ->
w(" rt[AP++] = ERL_DRV_FLOAT; rt[AP++] = (ErlDrvTermData) ~s;~n", [Name]);
build_ret(Name,_Q,#type{name=_T,size=FSz,base=float,single={tuple,Sz}}) ->
Temp = Name ++ "Tmp",
case FSz of
8 ->
w(" GLdouble *~s = ~s;\n", [Temp,Name]);
4 ->
w(" GLdouble ~sConv[~p], *~s = ~sConv; \n",[Name,Sz,Temp,Name]),
w(" for(int i=0; i < ~p; i++) ~sConv[i] = (GLdouble) ~s[i];\n",[Sz,Name,Name])
end,
[w(" rt[AP++] = ERL_DRV_FLOAT; rt[AP++] = (ErlDrvTermData) ~s++;~n", [Temp])
|| _ <- lists:seq(1,Sz)],
w(" rt[AP++] = ERL_DRV_TUPLE; rt[AP++] = ~p;~n",[Sz]);
build_ret(Name,_Q,#type{name=T,base=_,single={tuple,Sz}}) ->
Temp = Name ++ "Tmp",
w(" ~s *~s = ~s;\n", [T,Temp,Name]),
[w(" rt[AP++] = ERL_DRV_INT; rt[AP++] = (ErlDrvSInt) *~s++;~n", [Temp])
|| _ <- lists:seq(1,Sz)],
w(" rt[AP++] = ERL_DRV_TUPLE; rt[AP++] = ~p;~n",[Sz]);
build_ret(Name,_Q,#type{name="GLubyte",single={list,null}}) ->
w(" rt[AP++] = ERL_DRV_STRING; rt[AP++] = (ErlDrvTermData) ~s;"
" rt[AP++] = strlen((char *) ~s);\n", [Name, Name]);
build_ret(Name,_Q,#type{base=string,single={list,_,Sz}}) ->
w(" rt[AP++] = ERL_DRV_STRING; rt[AP++] = (ErlDrvTermData) ~s;"
" rt[AP++] = *~s;\n", [Name, Sz]);
build_ret(Name,_Q,#type{name=_T,base=B,single={list,_,Sz}}) when B =/= float ->
w(" for(int i=0; i < *~s; i++) {\n", [Sz]),
w(" rt[AP++] = ERL_DRV_INT; rt[AP++] = (ErlDrvSInt) ~s[i];}~n", [Name]),
w(" rt[AP++] = ERL_DRV_NIL;", []),
w(" rt[AP++] = ERL_DRV_LIST; rt[AP++] = (*~s)+1;~n",[Sz]);
build_ret(Name,_Q,#type{name=_T,size=FSz,base=float,single={list,Sz}}) ->
Temp = Name ++ "Tmp",
case FSz of
8 ->
w(" GLdouble *~s = ~s;\n", [Temp,Name]);
4 ->
w(" GLdouble ~sConv[~p], *~s = ~sConv; \n",[Name,Sz,Temp,Name]),
w(" for(int i=0; i < ~p; i++) ~sConv[i] = (GLdouble) ~s[i];\n",[Sz,Name,Name])
end,
[w(" rt[AP++] = ERL_DRV_FLOAT; rt[AP++] = (ErlDrvTermData) ~s++;~n", [Temp])
|| _ <- lists:seq(1,Sz)],
w(" rt[AP++] = ERL_DRV_NIL;", []),
w(" rt[AP++] = ERL_DRV_LIST; rt[AP++] = ~p+1;~n",[Sz]);
build_ret(Name,_Q,#type{name=T,base=_,single={list,Sz}}) ->
Temp = Name ++ "Tmp",
w(" ~s *~s = ~s;\n", [T,Temp,Name]),
[w(" rt[AP++] = ERL_DRV_INT; rt[AP++] = (ErlDrvSInt) *~s++;~n", [Temp])
|| _ <- lists:seq(1,Sz)],
w(" rt[AP++] = ERL_DRV_NIL;", []),
w(" rt[AP++] = ERL_DRV_LIST; rt[AP++] = ~p+1;~n",[Sz]);
build_ret(Name,_Q,#type{name="GLubyte",base=binary,size=Sz}) ->
w(" ErlDrvBinary * BinCopy = driver_alloc_binary(~p);~n", [Sz]),
w(" memcpy(BinCopy->orig_bytes, ~s, ~p);~n", [Name,Sz]),
w(" rt[AP++] = ERL_DRV_BINARY; rt[AP++] = (ErlDrvTermData) BinCopy;", []),
w(" rt[AP++] = ~p; rt[AP++] = 0;~n", [Sz]),
"driver_free_binary(BinCopy);";
build_ret(Name,_Q,T=#type{}) ->
io:format("{~p, {~p, {single,{tuple,X}}}}.~n", [get(current_func),Name]),
io:format(" ~p~n",[T]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
gen_defines(GLFuncs,GLUFuncs) ->
open_write("../c_src/gen/gl_fdefs.h"),
c_copyright(),
w("/***** This file is generated do not edit ****/~n~n", []),
w("#ifdef WX_DEF_EXTS~n", []),
w("# define WXE_EXTERN~n", []),
w("#else~n# define WXE_EXTERN extern~n", []),
w("#endif~n~n", []),
[fdefs(F) || F <- GLFuncs],
[fdefs(F) || F <- GLUFuncs],
close().
fdefs([F1|_Fs]) when is_list(F1) ->
put(current_func,F1),
fdef(get(F1)),
erase(current_func);
fdefs([]) -> ok;
fdefs(F) ->
put(current_func,F),
fdef(get(F)),
erase(current_func).
fdef(#func{where=erl}) -> ok;
fdef(#func{alt={has_vector,_,FuncName}}) ->
#func{name=Name,type=T,params=As} = get(FuncName),
w("typedef ~s (APIENTRY * WXE~s)(~s);~n",
[fdef_type(T), uppercase_all(Name), fdef_types(As)]),
w("WXE_EXTERN WXE~s we~s;~n", [uppercase_all(Name), Name]);
fdef(#func{name=Name,type=T,params=As,alt=_Alt}) ->
w("typedef ~s (APIENTRY * WXE~s)(~s);~n",
[fdef_type(T), uppercase_all(Name), fdef_types(As)]),
w("WXE_EXTERN WXE~s we~s;~n", [uppercase_all(Name), Name]).
fdef_type(void) -> "void";
fdef_type(#type{name=T, mod=Mod, single=true, ref=undefined}) ->
mod(Mod) ++ T;
fdef_type(#type{name=T, mod=Mod, single={tuple,Sz}, ref=undefined}) ->
mod(Mod) ++ T ++ " m[" ++ integer_to_list(Sz) ++ "]";
fdef_type(#type{name=T, mod=Mod, ref={pointer,1}}) ->
mod(Mod) ++ T ++ " *";
fdef_type(#type{name=T, mod=Mod, ref={pointer,2}}) ->
mod(Mod) ++ T ++ " **".
mod([const]) -> "const ";
mod([]) -> "".
fdef_types(As) ->
args(fun(#arg{type=T}) -> fdef_type(T) end, ",", As).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
gl_gen_init(Funcs) ->
open_write("../c_src/gen/gl_finit.h"),
c_copyright(),
w("/***** This file is generated do not edit ****/~n~n", []),
w("static struct {\n"
" const char * name;\n"
" const char * alt;\n"
" void * func;\n"
"} gl_fns[] = \n"
"{\n", []),
[finits(F) || F <- Funcs],
w(" { NULL, NULL, NULL}};\n",[]),
close().
glu_gen_init(Funcs) ->
open_write("../c_src/gen/glu_finit.h"),
c_copyright(),
w("/***** This file is generated do not edit ****/~n~n", []),
w("static struct {\n"
" const char * name;\n"
" const char * alt;\n"
" void * func;\n"
"} glu_fns[] = \n"
"{\n", []),
[finits(F) || F <- Funcs],
w(" { NULL, NULL, NULL}};\n",[]),
close().
finits([F1|_Fs]) when is_list(F1) ->
put(current_func,F1),
finit(get(F1)),
erase(current_func);
finits([]) -> ok;
finits(F) ->
put(current_func,F),
finit(get(F)),
erase(current_func).
finit(#func{where=erl}) -> ok;
finit(#func{alt={has_vector,_,FuncName}, ext=Ext}) ->
#func{name=Name} = get(FuncName),
w(" {~p, ~s, &we~s},\n", [Name, ext(Name,Ext), Name]);
finit(#func{name=Name, ext=Ext}) ->
w(" {~p, ~s, &we~s},\n", [Name, ext(Name,Ext), Name]).
ext(Name, {ext,Ext}) ->
"\"" ++ Name ++ Ext ++ "\"";
ext(_,_) -> "NULL".
