diff options
Diffstat (limited to 'lib/compiler/src')
| -rw-r--r-- | lib/compiler/src/sys_pre_expand.erl | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/lib/compiler/src/sys_pre_expand.erl b/lib/compiler/src/sys_pre_expand.erl index 249bd7a8e7..0fa1fea09f 100644 --- a/lib/compiler/src/sys_pre_expand.erl +++ b/lib/compiler/src/sys_pre_expand.erl @@ -43,6 +43,7 @@ mod_imports, %Module Imports compile=[], %Compile flags attributes=[], %Attributes + callbacks=[], %Callbacks defined=[], %Defined functions vcount=0, %Variable counter func=[], %Current function @@ -172,10 +173,41 @@ define_functions(Forms, #expand{defined=Predef}=St) -> end, Predef, Forms), St#expand{defined=ordsets:from_list(Fs)}. -module_attrs(St) -> - {[{attribute,Line,Name,Val} || {Name,Line,Val} <- St#expand.attributes],St}. +module_attrs(#expand{attributes=Attributes}=St) -> + Attrs = [{attribute,Line,Name,Val} || {Name,Line,Val} <- Attributes], + Callbacks = [Callback || {_,_,callback,_}=Callback <- Attrs], + {Attrs,St#expand{callbacks=Callbacks}}. module_predef_funcs(St) -> + {Mpf1,St1}=module_predef_func_beh_info(St), + {Mpf2,St2}=module_predef_funcs_mod_info(St1), + {Mpf1++Mpf2,St2}. + +module_predef_func_beh_info(#expand{callbacks=[]}=St) -> + {[], St}; +module_predef_func_beh_info(#expand{callbacks=Callbacks,defined=Defined, + exports=Exports}=St) -> + PreDef=[{behaviour_info,1}], + PreExp=PreDef, + {[gen_beh_info(Callbacks)], + St#expand{defined=union(from_list(PreDef), Defined), + exports=union(from_list(PreExp), Exports)}}. + +gen_beh_info(Callbacks) -> + List = make_list(Callbacks), + {function,0,behaviour_info,1, + [{clause,0,[{atom,0,callbacks}],[], + [List]}]}. + +make_list([]) -> {nil,0}; +make_list([{_,_,_,[{{Name,Arity},_}]}|Rest]) -> + {cons,0, + {tuple,0, + [{atom,0,Name}, + {integer,0,Arity}]}, + make_list(Rest)}. + +module_predef_funcs_mod_info(St) -> PreDef = [{module_info,0},{module_info,1}], PreExp = PreDef, {[{function,0,module_info,0, |