//************************************************************************************** // Generic programming features //************************************************************************************** implementation module generics1 import StdEnv import check from checktypes import createClassDictionaries from transform import ::Group import genericsupport import compilerSwitches //**************************************************************************************** // tracing //**************************************************************************************** traceGenerics context message x //:== traceValue context message x :== x //************************************************************************************** // Data types //************************************************************************************** :: FunDefs :== {#FunDef} :: Modules :== {#CommonDefs} :: DclModules :== {#DclModule} :: Groups :== {!Group} :: FunsAndGroups :== (!Index, !Index, ![FunDef], ![Group]) :: *GenericState = { gs_modules :: !*Modules , gs_exprh :: !*ExpressionHeap , gs_genh :: !*GenericHeap , gs_varh :: !*VarHeap , gs_tvarh :: !*TypeVarHeap , gs_avarh :: !*AttrVarHeap , gs_error :: !*ErrorAdmin , gs_symtab :: !*SymbolTable , gs_dcl_modules :: !*DclModules , gs_td_infos :: !*TypeDefInfos , gs_funs :: !*{#FunDef} , gs_groups :: {!Group} // non-unique, read only , gs_predefs :: !PredefinedSymbols , gs_main_module :: !Index , gs_used_modules :: !NumberSet } //************************************************************************************** // Exported functions //************************************************************************************** convertGenerics :: !Int // index of the main dcl module !NumberSet // set of used modules !{#CommonDefs} // common definitions of all modules !{!Group} // groups of functions !*{# FunDef} // functions !*TypeDefInfos // type definition information of all modules !*Heaps // all heaps !*HashTable // needed for what creating class dictionaries !*PredefinedSymbols // predefined symbols !u:{# DclModule} // dcl modules !*ErrorAdmin // to report errors -> ( !{#CommonDefs} // common definitions of all modules , !{!Group} // groups of functions , !*{# FunDef} // function definitions , ![IndexRange] // index ranges of generated functions , !*TypeDefInfos // type definition infos , !*Heaps // all heaps , !*HashTable // needed for creating class dictinaries , !*PredefinedSymbols // predefined symbols , !u:{# DclModule} // dcl modules , !*ErrorAdmin // to report errors ) convertGenerics main_dcl_module_n used_module_numbers modules groups funs td_infos heaps hash_table u_predefs dcl_modules error //#! td_infos = td_infos ---> "************************* generic phase started ******************** " //#! funs = dump_funs 0 funs //#! dcl_modules = dump_dcl_modules 0 dcl_modules #! modules = {x \\ x <-: modules} // unique copy #! dcl_modules = { x \\ x <-: dcl_modules } // unique copy #! size_predefs = size u_predefs #! (predefs, u_predefs) = arrayCopyBegin u_predefs size_predefs // non-unique copy #! td_infos = clearTypeDefInfos td_infos //---> ("used module numbers ", main_dcl_module_n, numberSetToList used_module_numbers) #! (modules, heaps) = clearGenericDefs modules heaps # {hp_var_heap, hp_generic_heap, hp_type_heaps={th_vars, th_attrs}, hp_expression_heap} = heaps # gs = { gs_modules = modules , gs_symtab = hash_table.hte_symbol_heap , gs_dcl_modules = dcl_modules , gs_td_infos = td_infos , gs_exprh = hp_expression_heap , gs_genh = hp_generic_heap , gs_varh = hp_var_heap , gs_tvarh = th_vars , gs_avarh = th_attrs , gs_error = error , gs_funs = funs , gs_groups = groups , gs_predefs = predefs , gs_main_module = main_dcl_module_n , gs_used_modules = used_module_numbers } # (generic_ranges, gs) = convert_generics gs # { gs_modules = modules, gs_symtab, gs_dcl_modules = dcl_modules, gs_td_infos = td_infos, gs_genh = hp_generic_heap, gs_varh = hp_var_heap, gs_tvarh = th_vars, gs_avarh = th_attrs, gs_exprh = hp_expression_heap, gs_error = error, gs_funs = funs, gs_groups = groups, gs_predefs = predefs, gs_main_module = main_dcl_module_n, gs_used_modules = used_module_numbers} = gs #! hash_table = { hash_table & hte_symbol_heap = gs_symtab } #! heaps = { hp_expression_heap = hp_expression_heap , hp_var_heap = hp_var_heap , hp_generic_heap = hp_generic_heap , hp_type_heaps = { th_vars = th_vars, th_attrs = th_attrs } } //#! funs = dump_funs 0 funs //#! dcl_modules = dump_dcl_modules 0 dcl_modules //#! error = error ---> "************************* generic phase completed ******************** " //| True = abort "generic phase aborted for testing\n" = (modules, groups, funs, generic_ranges, td_infos, heaps, hash_table, u_predefs, dcl_modules, error) where convert_generics :: !*GenericState -> (![IndexRange], !*GenericState) convert_generics gs #! (iso_range, gs) = buildGenericRepresentations gs #! (ok, gs) = gs_ok gs | not ok = ([], gs) #! gs = buildClasses gs #! (ok, gs) = gs_ok gs | not ok = ([], gs) #! (instance_range, gs) = convertGenericCases gs #! (ok, gs) = gs_ok gs | not ok = ([], gs) #! gs = convertGenericTypeContexts gs = ([iso_range,instance_range], gs) gs_ok :: !*GenericState -> (!Bool, !*GenericState) gs_ok gs=:{gs_error} #! ok = gs_error.ea_ok = (ok, {gs & gs_error = gs_error}) dump_funs n funs | n == size funs = funs #! ({fun_ident, fun_type, fun_body}, funs) = funs ! [n] #! funs = funs //---> ("icl function ", fun_ident, n, fun_type, fun_body) = dump_funs (inc n) funs dump_dcl_modules n dcl_modules | n == size dcl_modules = dcl_modules # ({dcl_functions}, dcl_modules) = dcl_modules ! [n] = dump_dcl_modules (inc n) (dump_dcl_funs 0 dcl_functions dcl_modules) //---> ("dcl module", n) dump_dcl_funs n dcl_funs dcl_modules | n == size dcl_funs = dcl_modules # {ft_ident, ft_type} = dcl_funs.[n] = dump_dcl_funs (inc n) dcl_funs dcl_modules //---> ("dcl function", ft_ident, n, ft_type) //**************************************************************************************** // clear stuff that might have been left over // from compilation of other icl modules //**************************************************************************************** clearTypeDefInfos td_infos = clear_modules 0 td_infos where clear_modules n td_infos | n == size td_infos = td_infos #! (td_infos1, td_infos) = replace td_infos n {} #! td_infos1 = clear_td_infos 0 td_infos1 #! td_infos = {td_infos & [n]=td_infos1} = clear_modules (inc n) td_infos clear_td_infos n td_infos | n == size td_infos = td_infos #! (td_info, td_infos) = td_infos![n] #! td_infos = {td_infos & [n] = {td_info & tdi_gen_rep = No}} = clear_td_infos (inc n) td_infos clearGenericDefs modules heaps = clear_module 0 modules heaps where clear_module n modules heaps | n == size modules = (modules, heaps) #! ({com_generic_defs}, modules) = modules![n] #! (com_generic_defs, heaps) = updateArraySt clear_generic_def {x\\x<-:com_generic_defs} heaps #! modules = {modules & [n].com_generic_defs = com_generic_defs} = clear_module (inc n) modules heaps clear_generic_def _ generic_def=:{gen_ident,gen_info_ptr} heaps=:{hp_generic_heap} #! (gen_info, hp_generic_heap) = readPtr gen_info_ptr hp_generic_heap #! gen_info = { gen_info & gen_classes = createArray 32 [] } #! hp_generic_heap = writePtr gen_info_ptr gen_info hp_generic_heap = (generic_def, {heaps & hp_generic_heap = hp_generic_heap}) //**************************************************************************************** // generic type representation //**************************************************************************************** // generic representation is built for each type argument of // generic cases of the current module buildGenericRepresentations :: !*GenericState -> (!IndexRange, !*GenericState) buildGenericRepresentations gs=:{gs_main_module, gs_modules, gs_funs, gs_groups} #! (size_funs, gs_funs) = usize gs_funs #! size_groups = size gs_groups #! ({com_gencase_defs}, gs_modules) = gs_modules ! [gs_main_module] #! gs = { gs & gs_modules = gs_modules, gs_funs = gs_funs, gs_groups = gs_groups } #! ((new_fun_index, new_group_index, new_funs, new_groups), gs) = foldArraySt on_gencase com_gencase_defs ((size_funs, size_groups, [], []), gs) # {gs_funs, gs_groups} = gs #! gs_funs = arrayPlusRevList gs_funs new_funs #! gs_groups = arrayPlusRevList gs_groups new_groups #! range = {ir_from = size_funs, ir_to = new_fun_index} = (range, {gs & gs_funs = gs_funs, gs_groups = gs_groups}) where on_gencase index case_def=:{gc_type_cons=TypeConsSymb {type_index={glob_module,glob_object}, type_ident}, gc_ident, gc_body=GCB_FunIndex fun_index, gc_pos} (funs_and_groups, gs=:{gs_modules, gs_td_infos, gs_funs}) #! (type_def, gs_modules) = gs_modules![glob_module].com_type_defs.[glob_object] #! (td_info, gs_td_infos) = gs_td_infos![glob_module, glob_object] #! type_def_gi = {gi_module=glob_module,gi_index=glob_object} #! ({fun_body}, gs_funs) = gs_funs ! [fun_index] #! gs = {gs & gs_modules = gs_modules, gs_td_infos = gs_td_infos, gs_funs = gs_funs} = case fun_body of TransformedBody _ // does not need a generic representation -> (funs_and_groups, gs) GeneratedBody // needs a generic representation -> case type_def.td_rhs of SynType _ # gs_error = reportError gc_ident gc_pos ("cannot derive a generic instance for a synonym type " +++ type_def.td_ident.id_name) gs.gs_error -> (funs_and_groups, {gs & gs_error = gs_error}) AbstractType _ # gs_error = reportError gc_ident gc_pos ("cannot derive a generic instance for an abstract type " +++ type_def.td_ident.id_name) gs.gs_error -> (funs_and_groups, {gs & gs_error = gs_error}) _ -> case td_info.tdi_gen_rep of Yes _ -> (funs_and_groups, gs) //---> ("generic representation is already built", type_ident) No #! (gen_type_rep, funs_and_groups, gs) = buildGenericTypeRep type_def_gi funs_and_groups gs #! td_info = {td_info & tdi_gen_rep = Yes gen_type_rep} # {gs_td_infos} = gs #! gs_td_infos = {gs_td_infos & [glob_module, glob_object] = td_info} # gs = {gs & gs_td_infos = gs_td_infos } -> (funs_and_groups, gs) //---> ("build generic representation", type_ident) on_gencase _ _ st = st :: ConsInfo = {ci_cons_info :: DefinedSymbol, ci_field_infos :: [DefinedSymbol]} buildGenericTypeRep :: !GlobalIndex // type def index !(!Index,!Index,![FunDef],![Group]) !*GenericState -> ( !GenericTypeRep , !(!Index, !Index, ![FunDef], ![Group]) , !*GenericState ) buildGenericTypeRep type_index funs_and_groups gs=:{gs_modules, gs_predefs, gs_main_module, gs_error, gs_td_infos, gs_exprh, gs_varh, gs_genh, gs_avarh, gs_tvarh} # heaps = { hp_expression_heap = gs_exprh , hp_var_heap = gs_varh , hp_generic_heap = gs_genh , hp_type_heaps = { th_vars = gs_tvarh, th_attrs = gs_avarh } } # (type_def, gs_modules) = gs_modules![type_index.gi_module].com_type_defs.[type_index.gi_index] # (type_info, cons_infos, funs_and_groups, gs_modules, heaps, gs_error) = buildTypeDefInfo type_index.gi_module type_def gs_main_module gs_predefs funs_and_groups gs_modules heaps gs_error # (atype, (gs_modules, gs_td_infos, heaps, gs_error)) = buildStructType type_index type_info cons_infos gs_predefs (gs_modules, gs_td_infos, heaps, gs_error) # (from_fun_ds, funs_and_groups, heaps, gs_error) = buildConversionFrom type_index.gi_module type_def gs_main_module gs_predefs funs_and_groups heaps gs_error # (to_fun_ds, funs_and_groups, heaps, gs_error) = buildConversionTo type_index.gi_module type_def gs_main_module gs_predefs funs_and_groups heaps gs_error # (iso_fun_ds, funs_and_groups, heaps, gs_error) = buildConversionIso type_def from_fun_ds to_fun_ds gs_main_module gs_predefs funs_and_groups heaps gs_error # {hp_expression_heap, hp_var_heap, hp_generic_heap, hp_type_heaps={th_vars, th_attrs}} = heaps # gs = { gs & gs_modules = gs_modules , gs_td_infos = gs_td_infos , gs_error = gs_error , gs_avarh = th_attrs , gs_tvarh = th_vars , gs_varh = hp_var_heap , gs_genh = hp_generic_heap , gs_exprh = hp_expression_heap } = ({gtr_type=atype,gtr_iso=iso_fun_ds}, funs_and_groups, gs) //---> ("buildGenericTypeRep", type_def.td_ident, atype) //======================================================================================== // the structure type //======================================================================================== convertATypeToGenTypeStruct :: !Ident !Position !PredefinedSymbols !AType (!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin) -> (GenTypeStruct, (!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin)) convertATypeToGenTypeStruct ident pos predefs type st = convert type st where convert {at_type=TA type_symb args, at_attribute} st = convert_type_app type_symb at_attribute args st convert {at_type=TAS type_symb args _, at_attribute} st = convert_type_app type_symb at_attribute args st convert {at_type=(CV tv) :@: args} st #! (args, st) = mapSt convert args st = (GTSAppVar tv args, st) convert {at_type=x --> y} st #! (x, st) = convert x st #! (y, st) = convert y st //= (GTSAppCons (KindArrow [KindConst, KindConst]) [x,y], st) = (GTSArrow x y, st) convert {at_type=TV tv} st = (GTSVar tv, st) convert {at_type=TB _} st = (GTSAppCons KindConst [], st) convert {at_type=type} (modules, td_infos, heaps, error) # error = reportError ident pos ("can not build generic representation for this type", type) error = (GTSE, (modules, td_infos, heaps, error)) convert_type_app {type_index} attr args (modules, td_infos, heaps, error) # (type_def, modules) = modules![type_index.glob_module].com_type_defs.[type_index.glob_object] = case type_def.td_rhs of SynType atype # (expanded_type, th) = expandSynonymType type_def attr args heaps.hp_type_heaps -> convert {at_type = expanded_type, at_attribute = attr} (modules, td_infos, {heaps & hp_type_heaps = th}, error) _ #! {pds_module, pds_def} = predefs.[PD_UnboxedArrayType] | type_index.glob_module == pds_module && type_index.glob_object == pds_def && (case args of [{at_type=TB _}] -> True; _ -> False) -> (GTSAppCons KindConst [], (modules, td_infos, heaps, error)) | otherwise #! ({tdi_kinds}, td_infos) = td_infos ! [type_index.glob_module,type_index.glob_object] #! kind = if (isEmpty tdi_kinds) KindConst (KindArrow tdi_kinds) #! (args, st) = mapSt convert args (modules, td_infos, heaps, error) -> (GTSAppCons kind args, st) // the structure type of a genric type can often be simplified // because bimaps for types not containing generic variables are indentity bimaps simplifyStructOfGenType :: ![TypeVar] !GenTypeStruct !*Heaps -> (!GenTypeStruct, !*Heaps) simplifyStructOfGenType gvars type heaps=:{hp_type_heaps=hp_type_heaps=:{th_vars}} #! th_vars = foldSt mark_type_var gvars th_vars #! (type, th_vars) = simplify type th_vars #! th_vars = foldSt clear_type_var gvars th_vars = (type, { heaps & hp_type_heaps = { hp_type_heaps & th_vars = th_vars}}) where simplify t=:(GTSAppCons KindConst []) st = (t, st) simplify (GTSAppCons kind=:(KindArrow kinds) args) st # formal_arity = length kinds # actual_arity = length args # (contains_gen_vars, st) = occurs_list args st | formal_arity == actual_arity && not contains_gen_vars = (GTSAppConsBimapKindConst, st) | otherwise # (args, st) = mapSt simplify args st =(GTSAppCons kind args, st) simplify (GTSArrow x y) st # (x, st) = simplify x st # (y, st) = simplify y st = (GTSArrow x y, st) simplify (GTSAppVar tv args) st # (args, st) = mapSt simplify args st = (GTSAppVar tv args, st) simplify t=:(GTSVar tv) st = (t, st) simplify t st = abort "invalid generic type structure\n" //---> ("invalid generic type structure", t) occurs (GTSAppCons _ args) st = occurs_list args st occurs (GTSAppVar tv args) st = occurs_list [GTSVar tv: args] st occurs (GTSVar tv) st = type_var_occurs tv st occurs (GTSArrow x y) st = occurs_list [x,y] st occurs (GTSCons _ arg) st = occurs arg st occurs (GTSField _ arg) st = occurs arg st occurs (GTSObject _ arg) st = occurs arg st occurs GTSE st = (False, st) occurs_list [] st = (False, st) occurs_list [x:xs] st # (x, st) = occurs x st # (xs, st) = occurs_list xs st = (x || xs, st) type_var_occurs tv th_vars # (tv_info, th_vars) = readPtr tv.tv_info_ptr th_vars = case tv_info of TVI_Empty = (False, th_vars) TVI_Used = (True, th_vars) _ = abort "invalid type var info" ---> ("type var is not empty", tv, tv_info) mark_type_var tv=:{tv_info_ptr} th_vars # (tv_info, th_vars) = readPtr tv_info_ptr th_vars = case tv_info of TVI_Empty = writePtr tv_info_ptr TVI_Used th_vars _ = abort "type var is not empty" ---> ("type var is not empty", tv, tv_info) clear_type_var {tv_info_ptr} th_vars = writePtr tv_info_ptr TVI_Empty th_vars buildStructType :: !GlobalIndex // type def global index !DefinedSymbol // type_info ![ConsInfo] // constructor and field info symbols !PredefinedSymbols (!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin) -> ( !GenTypeStruct // the structure type , (!*Modules, !*TypeDefInfos, !*Heaps, !*ErrorAdmin) ) buildStructType {gi_module,gi_index} type_info cons_infos predefs (modules, td_infos, heaps, error) # (type_def=:{td_ident}, modules) = modules![gi_module].com_type_defs.[gi_index] //# (common_defs, modules) = modules ! [gi_module] = build_type type_def type_info cons_infos (modules, td_infos, heaps, error) //---> ("buildStructureType", td_ident, atype) where build_type {td_rhs=AlgType alts, td_ident, td_pos} type_info cons_infos st # (cons_args, st) = zipWithSt (build_alt td_ident td_pos) alts cons_infos st # type = build_sum_type cons_args # type = SwitchGenericInfo (GTSObject type_info type) type = (type, st) build_type {td_rhs=RecordType {rt_constructor}, td_ident, td_pos} type_info [{ci_cons_info, ci_field_infos}] (modules, td_infos, heaps, error) # ({cons_type={st_args}}, modules) = modules![gi_module].com_cons_defs.[rt_constructor.ds_index] # (args, st) = mapSt (convertATypeToGenTypeStruct td_ident td_pos predefs) st_args (modules, td_infos, heaps, error) # args = SwitchGenericInfo [GTSField fi arg \\ arg <- args & fi <- ci_field_infos] args # prod_type = build_prod_type args # type = SwitchGenericInfo (GTSCons ci_cons_info prod_type) prod_type # type = SwitchGenericInfo (GTSObject type_info type) type = (type, st) /* build_type {td_rhs=SynType type,td_ident, td_pos} cons_infos common_defs st = convertATypeToGenTypeStruct td_ident td_pos type st */ build_type {td_rhs=SynType type,td_ident, td_pos} type_info cons_infos (modules, td_infos, heaps, error) # error = reportError td_ident td_pos "cannot build a generic representation of a synonym type" error = (GTSE, (modules, td_infos, heaps, error)) build_type td=:{td_rhs=(AbstractType _),td_ident, td_arity, td_args, td_pos} type_info cdis (modules, td_infos, heaps, error) # error = reportError td_ident td_pos "cannot build a generic representation of an abstract type" error = (GTSE, (modules, td_infos, heaps, error)) build_alt td_ident td_pos cons_def_sym=:{ds_index} {ci_cons_info} (modules, td_infos, heaps, error) # ({cons_type={st_args},cons_exi_vars}, modules) = modules![gi_module].com_cons_defs.[ds_index] | isEmpty cons_exi_vars # (args, st) = mapSt (convertATypeToGenTypeStruct td_ident td_pos predefs) st_args (modules, td_infos, heaps, error) # prod_type = build_prod_type args # type = SwitchGenericInfo (GTSCons ci_cons_info prod_type) prod_type = (type, st) # error = reportError td_ident td_pos "cannot build a generic representation of an existential type" error = (GTSE, (modules, td_infos, heaps, error)) build_prod_type :: [GenTypeStruct] -> GenTypeStruct build_prod_type types = listToBin build_pair build_unit types where build_pair x y = GTSAppCons (KindArrow [KindConst, KindConst]) [x, y] build_unit = GTSAppCons KindConst [] build_sum_type :: [GenTypeStruct] -> GenTypeStruct build_sum_type types = listToBin build_either build_void types where build_either x y = GTSAppCons (KindArrow [KindConst, KindConst]) [x, y] build_void = abort "sanity check: no alternatives in a type\n" // build a product of types buildProductType :: ![AType] !PredefinedSymbols -> AType buildProductType types predefs = listToBin build_pair build_unit types where build_pair x y = buildPredefTypeApp PD_TypePAIR [x, y] predefs build_unit = buildPredefTypeApp PD_TypeUNIT [] predefs // build a sum of types buildSumType :: ![AType] !PredefinedSymbols -> AType buildSumType types predefs = listToBin build_either build_void types where build_either x y = buildPredefTypeApp PD_TypeEITHER [x, y] predefs build_void = abort "sum of zero types\n" // build a binary representation of a list listToBin :: (a a -> a) a [a] -> a listToBin bin tip [] = tip listToBin bin tip [x] = x listToBin bin tip xs # (l,r) = splitAt ((length xs) / 2) xs = bin (listToBin bin tip l) (listToBin bin tip r) // build application of a predefined type constructor buildPredefTypeApp :: !Int [AType] !PredefinedSymbols -> AType buildPredefTypeApp predef_index args predefs # {pds_module, pds_def} = predefs.[predef_index] # pds_ident = predefined_idents.[predef_index] # global_index = {glob_module = pds_module, glob_object = pds_def} # type_symb = MakeTypeSymbIdent global_index pds_ident (length args) = makeAType (TA type_symb args) TA_Multi //======================================================================================== // build type infos //======================================================================================== buildTypeDefInfo :: !Index // type def module !CheckedTypeDef // the type definition !Index // icl module !PredefinedSymbols !FunsAndGroups !*Modules !*Heaps !*ErrorAdmin -> ( DefinedSymbol // type info , ![ConsInfo] , !FunsAndGroups , !*Modules , !*Heaps , !*ErrorAdmin ) buildTypeDefInfo td_module td=:{td_rhs = AlgType alts} main_module_index predefs funs_and_groups modules heaps error = buildTypeDefInfo2 td_module td alts [] main_module_index predefs funs_and_groups modules heaps error buildTypeDefInfo td_module td=:{td_rhs=RecordType {rt_constructor, rt_fields}} main_module_index predefs funs_and_groups modules heaps error = buildTypeDefInfo2 td_module td [rt_constructor] [x\\x<-:rt_fields] main_module_index predefs funs_and_groups modules heaps error buildTypeDefInfo td_module td=:{td_rhs = SynType type, td_ident, td_pos} main_module_index predefs funs_and_groups modules heaps error # error = reportError td_ident td_pos "cannot build constructor uinformation for a synonym type" error = buildTypeDefInfo2 td_module td [] [] main_module_index predefs funs_and_groups modules heaps error buildTypeDefInfo td_module td=:{td_rhs = AbstractType _, td_ident, td_pos} main_module_index predefs funs_and_groups modules heaps error # error = reportError td_ident td_pos "cannot build constructor uinformation for an abstract type" error = buildTypeDefInfo2 td_module td [] [] main_module_index predefs funs_and_groups modules heaps error buildTypeDefInfo2 td_module td alts fields main_module_index predefs funs_and_groups modules heaps error = SwitchGenericInfo (buildTypeDefInfo1 td_module td alts fields main_module_index predefs funs_and_groups modules heaps error) (dummy, funs_and_groups, modules, heaps, error) where dummy_ds = {ds_index = -1, ds_arity = 0, ds_ident = makeIdent ""} dummy = (dummy_ds, repeatn (length alts) dummy_ds) buildTypeDefInfo1 td_module {td_ident, td_pos, td_arity} alts fields main_module_index predefs (fun_index, group_index, funs, groups) modules heaps error # num_conses = length alts # num_fields = length fields # new_group_index = inc group_index # type_def_dsc_index = fun_index # first_cons_dsc_index = fun_index + 1 # cons_dsc_indexes = [first_cons_dsc_index .. first_cons_dsc_index + num_conses - 1] # first_field_dsc_index = first_cons_dsc_index + num_conses # field_dsc_indexes = [first_field_dsc_index .. first_field_dsc_index + num_fields - 1] # new_fun_index = first_field_dsc_index + num_fields # group = {group_members = [fun_index .. new_fun_index - 1]} # new_groups = [group:groups] # type_def_dsc_ds = {ds_arity=0, ds_ident=makeIdent("tdi_"+++td_ident.id_name), ds_index=type_def_dsc_index} # cons_dsc_dss = [ {ds_arity=0, ds_ident=makeIdent("cdi_"+++ds_ident.id_name), ds_index=i} \\ {ds_ident} <- alts & i <- cons_dsc_indexes] # field_dsc_dss = [ {ds_arity=0, ds_ident=makeIdent("fdi_"+++fs_ident.id_name), ds_index=i} \\ {fs_ident} <- fields & i <- field_dsc_indexes] # (type_def_dsc_fun, heaps) = build_type_def_dsc group_index cons_dsc_dss type_def_dsc_ds heaps # (cons_dsc_funs, (modules, heaps)) = zipWithSt (build_cons_dsc group_index type_def_dsc_ds field_dsc_dss) cons_dsc_dss alts (modules, heaps) # (field_dsc_funs, (modules, heaps)) = zipWithSt (build_field_dsc group_index (hd cons_dsc_dss)) field_dsc_dss fields (modules, heaps) // NOTE: reverse order (new functions are added at the head) # new_funs = (reverse field_dsc_funs) ++ (reverse cons_dsc_funs) ++ [type_def_dsc_fun] ++ funs # funs_and_groups = (new_fun_index, new_group_index, new_funs, new_groups) # (type_info_ds, (funs_and_groups, heaps)) = build_type_info type_def_dsc_ds (funs_and_groups, heaps) # (cons_info_dss, (funs_and_groups, heaps)) = mapSt build_cons_info cons_dsc_dss (funs_and_groups, heaps) # (field_info_dss, (funs_and_groups, heaps)) = mapSt build_field_info field_dsc_dss (funs_and_groups, heaps) # cons_infos = case (cons_info_dss, field_info_dss) of ([cons_info_ds], field_infos) -> [{ci_cons_info = cons_info_ds, ci_field_infos = field_infos}] (cons_info_dss, []) -> [{ci_cons_info=x,ci_field_infos=[]}\\x<-cons_info_dss] _ -> abort "generics.icl sanity check: fields in non-record type\n" = (type_info_ds, cons_infos, funs_and_groups, modules, heaps, error) where build_type_def_dsc group_index cons_info_dss {ds_index, ds_ident} heaps # td_name_expr = makeStringExpr td_ident.id_name # td_arity_expr = makeIntExpr td_arity # num_conses_expr = makeIntExpr (length alts) # (cons_info_exprs, heaps) = mapSt (\x st->buildFunApp main_module_index x [] st) cons_info_dss heaps # (td_conses_expr, heaps) = makeListExpr cons_info_exprs predefs heaps # (body_expr, heaps) = buildPredefConsApp PD_CGenericTypeDefDescriptor [ td_name_expr , td_arity_expr , num_conses_expr , td_conses_expr // TODO: module_name_expr ] predefs heaps # fun = makeFunction ds_ident ds_index group_index [] body_expr No main_module_index td_pos = (fun, heaps) build_cons_dsc group_index type_def_info_ds field_dsc_dss cons_info_ds cons_ds (modules, heaps) # ({cons_ident, cons_type, cons_priority,cons_number}, modules) = modules! [td_module].com_cons_defs.[cons_ds.ds_index] # name_expr = makeStringExpr cons_ident.id_name # arity_expr = makeIntExpr cons_type.st_arity # (prio_expr, heaps) = make_prio_expr cons_priority heaps # (type_def_expr, heaps) = buildFunApp main_module_index type_def_info_ds [] heaps # (type_expr, heaps) = make_type_expr cons_type heaps # (field_exprs, heaps) = mapSt (\x st->buildFunApp main_module_index x [] st) field_dsc_dss heaps # (fields_expr, heaps) = makeListExpr field_exprs predefs heaps # cons_index_expr = makeIntExpr cons_number # (body_expr, heaps) = buildPredefConsApp PD_CGenericConsDescriptor [ name_expr , arity_expr , prio_expr , type_def_expr , type_expr , fields_expr , cons_index_expr ] predefs heaps # fun = makeFunction cons_info_ds.ds_ident cons_info_ds.ds_index group_index [] body_expr No main_module_index td_pos = (fun, (modules, heaps)) where make_prio_expr NoPrio heaps = buildPredefConsApp PD_CGenConsNoPrio [] predefs heaps make_prio_expr (Prio assoc prio) heaps # assoc_predef = case assoc of NoAssoc -> PD_CGenConsAssocNone LeftAssoc -> PD_CGenConsAssocLeft RightAssoc -> PD_CGenConsAssocRight # (assoc_expr, heaps) = buildPredefConsApp assoc_predef [] predefs heaps # prio_expr = makeIntExpr prio = buildPredefConsApp PD_CGenConsPrio [assoc_expr, prio_expr] predefs heaps make_type_expr {st_vars, st_args, st_result} heaps=:{hp_type_heaps=type_heaps=:{th_vars}} # (_,th_vars) = foldSt (\ {tv_info_ptr} (n, th_vars) -> (n+1, writePtr tv_info_ptr (TVI_GenTypeVarNumber n) th_vars)) st_vars (0,th_vars) # heaps = {heaps & hp_type_heaps={type_heaps & th_vars=th_vars}} # (arg_exprs, heaps) = mapSt make_expr1 st_args heaps # (result_expr, heaps) = make_expr1 st_result heaps # {hp_type_heaps=type_heaps=:{th_vars}} = heaps # th_vars = foldSt (\ {tv_info_ptr} th_vars -> writePtr tv_info_ptr TVI_Empty th_vars) st_vars th_vars # heaps = {heaps & hp_type_heaps={type_heaps & th_vars=th_vars}} = curry arg_exprs result_expr heaps where curry [] result_expr heaps = (result_expr, heaps) curry [x:xs] result_expr heaps # (y, heaps) = curry xs result_expr heaps = make_arrow x y heaps make_expr1 :: !AType !*Heaps -> (!Expression, !*Heaps) make_expr1 {at_type} heaps = make_expr at_type heaps make_expr :: !Type !*Heaps -> (!Expression, !*Heaps) make_expr (TA type_symb arg_types) heaps # (arg_exprs, heaps) = mapSt make_expr1 arg_types heaps # (type_cons, heaps) = make_type_cons type_symb.type_ident.id_name heaps = make_apps type_cons arg_exprs heaps make_expr (TAS type_symb arg_types _) heaps # (arg_exprs, heaps) = mapSt make_expr1 arg_types heaps # (type_cons, heaps) = make_type_cons type_symb.type_ident.id_name heaps = make_apps type_cons arg_exprs heaps make_expr (x --> y) heaps # (x, heaps) = make_expr1 x heaps # (y, heaps) = make_expr1 y heaps = make_arrow x y heaps make_expr TArrow heaps = make_type_cons "(->)" heaps make_expr (TArrow1 type) heaps # (arg_expr, heaps) = make_expr1 type heaps # (arrow_expr, heaps) = make_type_cons "(->)" heaps = make_app arrow_expr arg_expr heaps make_expr (CV {tv_info_ptr} :@: arg_types) heaps # (arg_exprs, heaps) = mapSt make_expr1 arg_types heaps # (tv_expr, heaps) = make_type_var tv_info_ptr heaps = make_apps tv_expr arg_exprs heaps make_expr (TB bt) heaps = make_type_cons (toString bt) heaps make_expr (TV {tv_info_ptr}) heaps = make_type_var tv_info_ptr heaps make_expr (GTV {tv_info_ptr}) heaps = make_type_var tv_info_ptr heaps make_expr (TQV {tv_info_ptr}) heaps = make_type_var tv_info_ptr heaps make_expr TE heaps = make_type_cons "" heaps make_expr _ heaps = abort "type does not match\n" make_apps x [] heaps = (x, heaps) make_apps x [y:ys] heaps # (z, heaps) = make_app x y heaps = make_apps z ys heaps make_type_cons name heaps # name_expr = makeStringExpr name = buildPredefConsApp PD_CGenTypeCons [name_expr] predefs heaps make_type_var tv_info_ptr heaps #! type_var_n = case sreadPtr tv_info_ptr heaps.hp_type_heaps.th_vars of TVI_GenTypeVarNumber n -> n = buildPredefConsApp PD_CGenTypeVar [makeIntExpr type_var_n] predefs heaps make_arrow x y heaps = buildPredefConsApp PD_CGenTypeArrow [x, y] predefs heaps make_app x y heaps = buildPredefConsApp PD_CGenTypeApp [x, y] predefs heaps build_field_dsc group_index cons_dsc_ds field_dsc_ds {fs_ident, fs_index} (modules, heaps) # name_expr = makeStringExpr fs_ident.id_name # ({sd_field_nr}, modules) = modules! [td_module].com_selector_defs.[fs_index] # index_expr = makeIntExpr sd_field_nr # (cons_expr, heaps) = buildFunApp main_module_index cons_dsc_ds [] heaps # (body_expr, heaps) = buildPredefConsApp PD_CGenericFieldDescriptor [ name_expr , index_expr , cons_expr ] predefs heaps # fun = makeFunction field_dsc_ds.ds_ident field_dsc_ds.ds_index group_index [] body_expr No main_module_index td_pos = (fun, (modules, heaps)) build_cons_info cons_dsc_ds (funs_and_groups, heaps) # ident = makeIdent ("g"+++cons_dsc_ds.ds_ident.id_name) # (cons_dsc_expr, heaps) = buildFunApp main_module_index cons_dsc_ds [] heaps # (body_expr, heaps) = buildPredefConsApp PD_GenericConsInfo [cons_dsc_expr] predefs heaps # (def_sym, funs_and_groups) = buildFunAndGroup ident [] body_expr No main_module_index td_pos funs_and_groups = (def_sym, (funs_and_groups, heaps)) build_field_info field_dsc_ds (funs_and_groups, heaps) # ident = makeIdent ("g"+++field_dsc_ds.ds_ident.id_name) # (field_dsc_expr, heaps) = buildFunApp main_module_index field_dsc_ds [] heaps # (body_expr, heaps) = buildPredefConsApp PD_GenericFieldInfo [field_dsc_expr] predefs heaps # (def_sym, funs_and_groups) = buildFunAndGroup ident [] body_expr No main_module_index td_pos funs_and_groups = (def_sym, (funs_and_groups, heaps)) build_type_info type_dsc_ds (funs_and_groups, heaps) # ident = makeIdent ("g"+++type_dsc_ds.ds_ident.id_name) # (type_dsc_expr, heaps) = buildFunApp main_module_index type_dsc_ds [] heaps # (body_expr, heaps) = buildPredefConsApp PD_GenericTypeInfo [type_dsc_expr] predefs heaps # (def_sym, funs_and_groups) = buildFunAndGroup ident [] body_expr No main_module_index td_pos funs_and_groups = (def_sym, (funs_and_groups, heaps)) //======================================================================================== // conversions functions //======================================================================================== // buildConversionIso buildConversionIso :: !CheckedTypeDef // the type definition !DefinedSymbol // from fun !DefinedSymbol // to fun !Index // main module !PredefinedSymbols (!Index, !Index, ![FunDef], ![Group]) !*Heaps !*ErrorAdmin -> ( !DefinedSymbol , (!Index, !Index, ![FunDef], ![Group]) , !*Heaps , !*ErrorAdmin ) buildConversionIso type_def=:{td_ident, td_pos} from_fun to_fun main_dcl_module_n predefs funs_and_groups heaps error #! (from_expr, heaps) = buildFunApp main_dcl_module_n from_fun [] heaps #! (to_expr, heaps) = buildFunApp main_dcl_module_n to_fun [] heaps #! (iso_expr, heaps) = build_iso to_expr from_expr heaps #! ident = makeIdent ("iso" +++ td_ident.id_name) #! (def_sym, funs_and_groups) = buildFunAndGroup ident [] iso_expr No main_dcl_module_n td_pos funs_and_groups = (def_sym, funs_and_groups, heaps, error) //---> ("buildConversionIso", td_ident, let (_,_,fs,_) = funs_and_groups in hd fs) where build_iso to_expr from_expr heaps = buildPredefConsApp PD_ConsBimap [to_expr, from_expr] predefs heaps // conversion from type to generic buildConversionTo :: !Index // type def module !CheckedTypeDef // the type def !Index // main module !PredefinedSymbols !(!Index, !Index, ![FunDef], ![Group]) !*Heaps !*ErrorAdmin -> ( !DefinedSymbol , (!Index, !Index, ![FunDef], ![Group]) , !*Heaps , !*ErrorAdmin ) buildConversionTo type_def_mod type_def=:{td_rhs, td_ident, td_index, td_pos} main_module_index predefs funs_and_groups heaps error # (arg_expr, arg_var, heaps) = buildVarExpr "x" heaps # (body_expr, heaps, error) = build_expr_for_type_rhs type_def_mod td_index td_rhs arg_expr heaps error # fun_name = makeIdent ("fromGenericTo" +++ td_ident.id_name) | not error.ea_ok # (def_sym, funs_and_groups) = (buildFunAndGroup fun_name [] EE No main_module_index td_pos funs_and_groups) = (def_sym, funs_and_groups, heaps, error) //---> ("buildConversionTo failed", td_ident) # (def_sym, funs_and_groups) = (buildFunAndGroup fun_name [arg_var] body_expr No main_module_index td_pos funs_and_groups) = (def_sym, funs_and_groups, heaps, error) //---> ("buildConversionTo", td_ident, let (_,_,fs,_) = funs_and_groups in hd fs) where // build conversion for type rhs build_expr_for_type_rhs :: !Int // type def module !Int // type def index !TypeRhs // type def rhs !Expression // expression of the function argument variable !*Heaps !*ErrorAdmin -> ( !Expression // generated expression , !*Heaps // state , !*ErrorAdmin ) build_expr_for_type_rhs type_def_mod type_def_index (AlgType def_symbols) arg_expr heaps error = build_expr_for_conses False type_def_mod type_def_index def_symbols arg_expr heaps error build_expr_for_type_rhs type_def_mod type_def_index (RecordType {rt_constructor}) arg_expr heaps error = build_expr_for_conses True type_def_mod type_def_index [rt_constructor] arg_expr heaps error build_expr_for_type_rhs type_def_mod type_def_index (AbstractType _) arg_expr heaps error #! error = checkErrorWithIdentPos (newPosition td_ident td_pos) "cannot build isomorphisms for an abstract type" error = (EE, heaps, error) build_expr_for_type_rhs type_def_mod type_def_index (SynType _) arg_expr heaps error #! error = checkErrorWithIdentPos (newPosition td_ident td_pos) "cannot build isomorphisms for a synonym type" error = (EE, heaps, error) // build conversion for constructors of a type def build_expr_for_conses is_record type_def_mod type_def_index cons_def_syms arg_expr heaps error # (case_alts, heaps, error) = build_exprs_for_conses is_record 0 (length cons_def_syms) type_def_mod cons_def_syms heaps error # case_patterns = AlgebraicPatterns {glob_module = type_def_mod, glob_object = type_def_index} case_alts # (case_expr, heaps) = buildCaseExpr arg_expr case_patterns heaps = (case_expr, heaps, error) //---> (free_vars, case_expr) // build conversions for constructors build_exprs_for_conses :: !Bool !Int !Int !Int ![DefinedSymbol] !*Heaps !*ErrorAdmin -> ([AlgebraicPattern], !*Heaps, !*ErrorAdmin) build_exprs_for_conses is_record i n type_def_mod [] heaps error = ([], heaps, error) build_exprs_for_conses is_record i n type_def_mod [cons_def_sym:cons_def_syms] heaps error #! (alt, heaps, error) = build_expr_for_cons is_record i n type_def_mod cons_def_sym heaps error #! (alts, heaps, error) = build_exprs_for_conses is_record (i+1) n type_def_mod cons_def_syms heaps error = ([alt:alts], heaps, error) // build conversion for a constructor build_expr_for_cons :: !Bool !Int !Int !Int !DefinedSymbol !*Heaps !*ErrorAdmin -> (AlgebraicPattern, !*Heaps, !*ErrorAdmin) build_expr_for_cons is_record i n type_def_mod cons_def_sym=:{ds_ident, ds_arity} heaps error #! names = ["x" +++ toString (i+1) +++ toString k \\ k <- [1..ds_arity]] #! (var_exprs, vars, heaps) = buildVarExprs names heaps #! (arg_exprs, heaps) = build_fields (SwitchGenericInfo True False && is_record) var_exprs heaps with build_fields False var_exprs heaps = (var_exprs, heaps) build_fields True var_exprs heaps = mapSt build_field var_exprs heaps build_field var_expr heaps = buildPredefConsApp PD_ConsFIELD [var_expr] predefs heaps #! (expr, heaps) = build_prod arg_exprs predefs heaps #! (expr, heaps) = SwitchGenericInfo (build_cons expr heaps) (expr, heaps) with build_cons expr heaps = buildPredefConsApp PD_ConsCONS [expr] predefs heaps #! (expr, heaps) = build_sum i n expr predefs heaps #! (expr, heaps) = SwitchGenericInfo (build_object expr heaps) (expr, heaps) with build_object expr heaps = buildPredefConsApp PD_ConsOBJECT [expr] predefs heaps #! alg_pattern = { ap_symbol = {glob_module = type_def_mod, glob_object = cons_def_sym}, ap_vars = vars, ap_expr = expr, ap_position = NoPos } = (alg_pattern, heaps, error) build_sum :: !Int !Int !Expression !PredefinedSymbols !*Heaps -> (!Expression, !*Heaps) build_sum i n expr predefs heaps | n == 0 = abort "build sum of zero elements\n" | i >= n = abort "error building sum" | n == 1 = (expr, heaps) | i < (n/2) # (expr, heaps) = build_sum i (n/2) expr predefs heaps = build_left expr heaps | otherwise # (expr, heaps) = build_sum (i - (n/2)) (n - (n/2)) expr predefs heaps = build_right expr heaps where build_left x heaps = buildPredefConsApp PD_ConsLEFT [x] predefs heaps build_right x heaps = buildPredefConsApp PD_ConsRIGHT [x] predefs heaps build_prod :: ![Expression] !PredefinedSymbols !*Heaps -> (!Expression, !*Heaps) build_prod [] predefs heaps = build_unit heaps where build_unit heaps = buildPredefConsApp PD_ConsUNIT [] predefs heaps build_prod [expr] predefs heaps = (expr, heaps) build_prod exprs predefs heaps # (lexprs, rexprs) = splitAt ((length exprs)/2) exprs # (lexpr, heaps) = build_prod lexprs predefs heaps # (rexpr, heaps) = build_prod rexprs predefs heaps = build_pair lexpr rexpr heaps where build_pair x y heaps = buildPredefConsApp PD_ConsPAIR [x, y] predefs heaps buildConversionFrom :: !Index // type def module !CheckedTypeDef // the type def !Index // main module !PredefinedSymbols !(!Index, !Index, ![FunDef], ![Group]) !*Heaps !*ErrorAdmin -> ( !DefinedSymbol , (!Index, !Index, ![FunDef], ![Group]) , !*Heaps , !*ErrorAdmin ) buildConversionFrom type_def_mod type_def=:{td_rhs, td_ident, td_index, td_pos} main_module_index predefs funs_and_groups heaps error # (body_expr, arg_var, heaps, error) = build_expr_for_type_rhs type_def_mod td_rhs heaps error # fun_name = makeIdent ("toGenericFrom" +++ td_ident.id_name) | not error.ea_ok # (def_sym, funs_and_groups) = (buildFunAndGroup fun_name [] EE No main_module_index td_pos funs_and_groups) = (def_sym, funs_and_groups, heaps, error) //---> ("buildConversionFrom failed", td_ident) # (def_sym, funs_and_groups) = (buildFunAndGroup fun_name [arg_var] body_expr No main_module_index td_pos funs_and_groups) = (def_sym, funs_and_groups, heaps, error) //---> ("buildConversionFrom", td_ident, let (_,_,fs,_) = funs_and_groups in hd fs) where // build expression for type def rhs build_expr_for_type_rhs :: !Index // type def module !TypeRhs // type rhs !*Heaps !*ErrorAdmin -> ( !Expression // body expresssion , !FreeVar , !*Heaps , !*ErrorAdmin ) build_expr_for_type_rhs type_def_mod (AlgType def_symbols) heaps error #! (expr, var, heaps, error) = build_sum False type_def_mod def_symbols heaps error #! (expr, var, heaps) = SwitchGenericInfo (build_case_object var expr heaps) (expr, var, heaps) = (expr, var, heaps, error) build_expr_for_type_rhs type_def_mod (RecordType {rt_constructor}) heaps error # (expr, var, heaps, error) = build_sum True type_def_mod [rt_constructor] heaps error #! (expr, var, heaps) = SwitchGenericInfo (build_case_object var expr heaps) (expr, var, heaps) = (expr, var, heaps, error) build_expr_for_type_rhs type_def_mod (AbstractType _) heaps error #! error = reportError td_ident td_pos "cannot build isomorphisms for an abstract type" error # dummy_fv = {fv_def_level=(-1), fv_count=0, fv_ident=makeIdent "dummy", fv_info_ptr=nilPtr} = (EE, dummy_fv, heaps, error) build_expr_for_type_rhs type_def_mod (SynType _) heaps error #! error = reportError td_ident td_pos "cannot build isomorphisms for a synonym type" error # dummy_fv = {fv_def_level=(-1), fv_count=0, fv_ident=makeIdent "dummy", fv_info_ptr=nilPtr} = (EE, dummy_fv, heaps, error) // build expression for sums build_sum :: !Bool // is record !Index ![DefinedSymbol] !*Heaps !*ErrorAdmin -> ( !Expression , !FreeVar // top variable , !*Heaps , !*ErrorAdmin ) build_sum is_record type_def_mod [] heaps error = abort "algebraic type with no constructors!\n" build_sum is_record type_def_mod [def_symbol] heaps error #! (cons_app_expr, cons_arg_vars, heaps) = build_cons_app type_def_mod def_symbol heaps #! (prod_expr, var, heaps) = build_prod is_record cons_app_expr cons_arg_vars heaps #! (alt_expr, var, heaps) = SwitchGenericInfo (build_case_cons var prod_expr heaps) (prod_expr, var, heaps) = (alt_expr, var, heaps, error) build_sum is_record type_def_mod def_symbols heaps error #! (left_def_syms, right_def_syms) = splitAt ((length def_symbols) /2) def_symbols #! (left_expr, left_var, heaps, error) = build_sum is_record type_def_mod left_def_syms heaps error #! (right_expr, right_var, heaps, error) = build_sum is_record type_def_mod right_def_syms heaps error #! (case_expr, var, heaps) = build_case_either left_var left_expr right_var right_expr heaps = (case_expr, var, heaps, error) // build expression for products build_prod :: !Bool // is record !Expression // result of the case on product ![FreeVar] // list of variables of the constructor pattern !*Heaps -> ( !Expression // generated product , !FreeVar // top variable , !*Heaps ) build_prod is_record expr [] heaps = build_case_unit expr heaps build_prod is_record expr [cons_arg_var] heaps #! (arg_expr, var, heaps) = SwitchGenericInfo (case is_record of True -> build_case_field cons_arg_var expr heaps; False -> (expr, cons_arg_var, heaps)) (expr, cons_arg_var, heaps) = (arg_expr, var, heaps) build_prod is_record expr cons_arg_vars heaps #! (left_vars, right_vars) = splitAt ((length cons_arg_vars) /2) cons_arg_vars #! (expr, left_var, heaps) = build_prod is_record expr left_vars heaps #! (expr, right_var, heaps) = build_prod is_record expr right_vars heaps #! (case_expr, var, heaps) = build_case_pair left_var right_var expr heaps = (case_expr, var, heaps) // build constructor application expression build_cons_app :: !Index !DefinedSymbol !*Heaps -> (!Expression, ![FreeVar], !*Heaps) build_cons_app cons_mod def_symbol=:{ds_arity} heaps #! names = ["x" +++ toString k \\ k <- [1..ds_arity]] #! (var_exprs, vars, heaps) = buildVarExprs names heaps #! (expr, heaps) = buildConsApp cons_mod def_symbol var_exprs heaps = (expr, vars, heaps) // build case expressions for PAIR, EITHER and UNIT build_case_unit body_expr heaps # unit_pat = buildPredefConsPattern PD_ConsUNIT [] body_expr predefs # {pds_module, pds_def} = predefs.[PD_TypeUNIT] # case_patterns = AlgebraicPatterns {glob_module = pds_module, glob_object = pds_def} [unit_pat] = build_case_expr case_patterns heaps build_case_pair var1 var2 body_expr heaps # pair_pat = buildPredefConsPattern PD_ConsPAIR [var1, var2] body_expr predefs # {pds_module, pds_def} = predefs.[PD_TypePAIR] # case_patterns = AlgebraicPatterns {glob_module = pds_module, glob_object = pds_def} [pair_pat] = build_case_expr case_patterns heaps build_case_either left_var left_expr right_var right_expr heaps # left_pat = buildPredefConsPattern PD_ConsLEFT [left_var] left_expr predefs # right_pat = buildPredefConsPattern PD_ConsRIGHT [right_var] right_expr predefs # {pds_module, pds_def} = predefs.[PD_TypeEITHER] # case_patterns = AlgebraicPatterns {glob_module = pds_module, glob_object = pds_def} [left_pat, right_pat] = build_case_expr case_patterns heaps // CONS case build_case_cons var body_expr heaps # pat = buildPredefConsPattern PD_ConsCONS [var] body_expr predefs # {pds_module, pds_def} = predefs.[PD_TypeCONS] # case_patterns = AlgebraicPatterns {glob_module = pds_module, glob_object = pds_def} [pat] = build_case_expr case_patterns heaps // FIELD case build_case_field var body_expr heaps # pat = buildPredefConsPattern PD_ConsFIELD [var] body_expr predefs # {pds_module, pds_def} = predefs.[PD_TypeFIELD] # case_patterns = AlgebraicPatterns {glob_module = pds_module, glob_object = pds_def} [pat] = build_case_expr case_patterns heaps // OBJECT case build_case_object var body_expr heaps # pat = buildPredefConsPattern PD_ConsOBJECT [var] body_expr predefs # {pds_module, pds_def} = predefs.[PD_TypeOBJECT] # case_patterns = AlgebraicPatterns {glob_module = pds_module, glob_object = pds_def} [pat] = build_case_expr case_patterns heaps // case with a variable as the selector expression build_case_expr case_patterns heaps # (var_expr, var, heaps) = buildVarExpr "c" heaps # (case_expr, heaps) = buildCaseExpr var_expr case_patterns heaps = (case_expr, var, heaps) //**************************************************************************************** // build kind indexed classes //**************************************************************************************** buildClasses :: !*GenericState -> *GenericState buildClasses gs=:{gs_modules, gs_main_module} #! (common_defs=:{com_class_defs, com_member_defs}, gs_modules) = gs_modules ! [gs_main_module] #! num_classes = size com_class_defs #! num_members = size com_member_defs #! ((classes, members, new_num_classes, new_num_members), gs=:{gs_modules}) = build_modules 0 ([], [], num_classes, num_members) {gs & gs_modules = gs_modules} // obtain common definitions again because com_gencase_defs are updated #! (common_defs, gs_modules) = gs_modules ! [gs_main_module] # common_defs = { common_defs & com_class_defs = arrayPlusRevList com_class_defs classes , com_member_defs = arrayPlusRevList com_member_defs members } #! (common_defs, gs=:{gs_modules}) = build_class_dictionaries common_defs {gs & gs_modules = gs_modules} #! gs_modules = {gs_modules & [gs_main_module] = common_defs} = {gs & gs_modules = gs_modules} where build_modules :: !Index (![ClassDef], ![MemberDef], !Int, !Int) !*GenericState -> ((![ClassDef], ![MemberDef], !Int, !Int), !*GenericState) build_modules module_index st gs=:{gs_modules} | module_index == size gs_modules = (st, {gs & gs_modules = gs_modules}) #! (common_defs=:{com_gencase_defs}, gs_modules) = gs_modules![module_index] #! (com_gencase_defs, st, gs=:{gs_modules}) = build_module module_index com_gencase_defs st {gs & gs_modules=gs_modules} #! gs_modules = { gs_modules & [module_index] = {common_defs & com_gencase_defs = com_gencase_defs } } = build_modules (inc module_index) st {gs & gs_modules = gs_modules} build_module module_index com_gencase_defs st gs=:{gs_used_modules} | inNumberSet module_index gs_used_modules #! com_gencase_defs = {x\\x<-:com_gencase_defs} = build_module1 module_index 0 com_gencase_defs st gs = (com_gencase_defs, st, gs) build_module1 module_index index com_gencase_defs st gs | index == size com_gencase_defs = (com_gencase_defs, st, gs) #! (gencase, com_gencase_defs) = com_gencase_defs ! [index] #! (gencase, st, gs) = on_gencase module_index index gencase st gs #! com_gencase_defs = {com_gencase_defs & [index] = gencase} = build_module1 module_index (inc index) com_gencase_defs st gs on_gencase :: !Index !Index !GenericCaseDef (![ClassDef], ![MemberDef], !Index, Index) !*GenericState -> ( !GenericCaseDef , (![ClassDef], ![MemberDef], !Index, Index) , !*GenericState ) on_gencase module_index index gencase=:{gc_ident,gc_generic, gc_type_cons} st gs=:{gs_modules, gs_td_infos} #! (gen_def, gs_modules) = gs_modules ! [gc_generic.gi_module].com_generic_defs.[gc_generic.gi_index] #! (kind, gs_td_infos) = get_kind_of_type_cons gc_type_cons gs_td_infos // To generate all partially applied shorthand instances we need // classes for all partial applications of the gc_kind and for // all the argument kinds. // Additionally, we always need classes for base cases *, *->* and *->*->* #! gs = {gs & gs_modules = gs_modules, gs_td_infos = gs_td_infos} #! subkinds = determine_subkinds kind #! kinds = [ KindConst , KindArrow [KindConst] , KindArrow [KindConst, KindConst] : subkinds] #! (st, gs) = foldSt (build_class_if_needed gen_def) kinds (st, gs) /* #! (st, gs) = build_class_if_needed gen_def kind (st, {gs & gs_modules = gs_modules, gs_td_infos = gs_td_infos}) // build classes needed for shorthand instances #! (st, gs) = case kind of KindConst -> (st, gs) KindArrow ks -> foldSt (build_class_if_needed gen_def) [KindConst:ks] (st, gs) */ #! gencase = { gencase & gc_kind = kind } = (gencase, st, gs) build_class_if_needed :: !GenericDef !TypeKind ((![ClassDef], ![MemberDef], !Index, Index), *GenericState) -> ((![ClassDef], ![MemberDef], !Index, Index), *GenericState) build_class_if_needed gen_def kind ((classes, members, class_index, member_index), gs=:{gs_main_module, gs_genh}) #! (opt_class_info, gs_genh) = lookup_generic_class_info gen_def kind gs_genh #! gs = { gs & gs_genh = gs_genh} = case opt_class_info of No #! (class_def, member_def, gs=:{gs_genh}) = buildClassAndMember gs_main_module class_index member_index kind gen_def gs #! class_info = { gci_kind = kind , gci_module = gs_main_module , gci_class = class_index , gci_member = member_index } #! gs_genh = add_generic_class_info gen_def class_info gs_genh #! gs = { gs & gs_genh = gs_genh } -> (([class_def:classes], [member_def:members], inc class_index, inc member_index), gs) Yes class_info -> ((classes, members, class_index, member_index), gs) determine_subkinds KindConst = [KindConst] determine_subkinds (KindArrow kinds) = do_it kinds where do_it [] = [KindConst] do_it all_ks=:[k:ks] #! this_kind = KindArrow all_ks #! left_subkinds = determine_subkinds k #! right_subkinds = do_it ks = [this_kind : left_subkinds ++ right_subkinds] get_kind_of_type_cons :: !TypeCons !*TypeDefInfos -> (!TypeKind, !*TypeDefInfos) get_kind_of_type_cons (TypeConsBasic _) td_infos = (KindConst, td_infos) get_kind_of_type_cons TypeConsArrow td_infos = (KindArrow [KindConst,KindConst], td_infos) get_kind_of_type_cons (TypeConsSymb {type_ident, type_index}) td_infos #! ({tdi_kinds}, td_infos) = td_infos ! [type_index.glob_module,type_index.glob_object] = (if (isEmpty tdi_kinds) KindConst (KindArrow tdi_kinds), td_infos) get_kind_of_type_cons (TypeConsVar tv) td_infos = (KindConst, td_infos) lookup_generic_class_info {gen_info_ptr} kind hp_generic_heap #! ({gen_classes}, hp_generic_heap) = readPtr gen_info_ptr hp_generic_heap = (lookupGenericClassInfo kind gen_classes, hp_generic_heap) add_generic_class_info {gen_info_ptr} class_info gs_genh #! (gen_info=:{gen_classes}, gs_genh) = readPtr gen_info_ptr gs_genh #! gen_classes = addGenericClassInfo class_info gen_classes #! gs_genh = writePtr gen_info_ptr {gen_info&gen_classes=gen_classes} gs_genh = gs_genh build_class_dictionaries :: !CommonDefs !*GenericState -> (!CommonDefs, !*GenericState) build_class_dictionaries common_defs gs=:{gs_varh, gs_tvarh, gs_main_module, gs_symtab, gs_dcl_modules} #! class_defs = { x \\ x <-: common_defs.com_class_defs } // make unique copy # type_defs = { x \\ x <-: common_defs.com_type_defs } // make unique copy # cons_defs = { x \\ x <-: common_defs.com_cons_defs } // make unique copy # selector_defs = { x \\ x <-: common_defs.com_selector_defs } // make unique copy # (size_type_defs,type_defs) = usize type_defs #! (new_type_defs, new_selector_defs, new_cons_defs,_,type_defs,selector_defs,cons_defs,class_defs, gs_dcl_modules, gs_tvarh, gs_varh, gs_symtab) = createClassDictionaries False gs_main_module size_type_defs (size common_defs.com_selector_defs) (size common_defs.com_cons_defs) type_defs selector_defs cons_defs class_defs gs_dcl_modules gs_tvarh gs_varh gs_symtab #! common_defs = { common_defs & com_class_defs = class_defs, com_type_defs = arrayPlusList type_defs new_type_defs, com_selector_defs = arrayPlusList selector_defs new_selector_defs, com_cons_defs = arrayPlusList cons_defs new_cons_defs} # gs = { gs & gs_tvarh = gs_tvarh , gs_varh = gs_varh , gs_dcl_modules = gs_dcl_modules , gs_symtab = gs_symtab } = (common_defs, gs) // limitations: // - context restrictions on generic variables are not allowed buildMemberType :: !GenericDef !TypeKind !TypeVar !*GenericState -> ( !SymbolType, !*GenericState) buildMemberType gen_def=:{gen_ident,gen_pos,gen_type,gen_vars} kind class_var gs=:{gs_predefs} #! (gen_type, gs) = add_bimap_contexts gen_def gs #! th = {th_vars = gs.gs_tvarh, th_attrs = gs.gs_avarh} #! (kind_indexed_st, gatvs, th, gs_error) = buildKindIndexedType gen_type gen_vars kind gen_ident gen_pos th gs.gs_error #! (member_st, th, gs_error) = replace_generic_vars_with_class_var kind_indexed_st gatvs kind th gs_error #! (member_st, th) = SwitchGenericInfo (add_generic_info member_st th) (member_st, th) #! th = assertSymbolType member_st th // just paranoied about cleared variables #! th = assertSymbolType gen_type th # {th_vars, th_attrs} = th #! gs = {gs & gs_avarh = th_attrs, gs_tvarh = th_vars, gs_error = gs_error } = (member_st, gs) //---> ("buildMemberType returns", gen_ident, kind, member_st) where add_bimap_contexts {gen_type=gen_type=:{st_vars, st_context}, gen_vars, gen_info_ptr} gs=:{gs_predefs, gs_varh, gs_genh} #! ({gen_var_kinds}, gs_genh) = readPtr gen_info_ptr gs_genh #! num_gen_vars = length gen_vars #! tvs = st_vars -- gen_vars #! kinds = drop num_gen_vars gen_var_kinds #! (bimap_contexts, gs_varh) = build_contexts tvs kinds gs_varh #! gs = {gs & gs_varh = gs_varh, gs_genh = gs_genh} = ({gen_type & st_context = st_context ++ bimap_contexts}, gs) where build_contexts [] [] st = ([], st) build_contexts [x:xs] [KindConst:kinds] st = build_contexts xs kinds st build_contexts [x:xs] [kind:kinds] st # (z, st) = build_context x kind st # (zs, st) = build_contexts xs kinds st = ([z:zs], st) build_context tv kind gs_varh #! (var_info_ptr, gs_varh) = newPtr VI_Empty gs_varh #! {pds_module, pds_def} = gs_predefs . [PD_GenericBimap] #! pds_ident = predefined_idents . [PD_GenericBimap] # glob_def_sym = { glob_module = pds_module , glob_object = {ds_ident=pds_ident, ds_index=pds_def, ds_arity = 1} } # tc_class = TCGeneric { gtc_generic=glob_def_sym , gtc_kind = kind , gtc_class = {glob_module=NoIndex,glob_object={ds_ident=makeIdent "", ds_index=NoIndex, ds_arity=1}} , gtc_dictionary = {glob_module=NoIndex,glob_object={ds_ident=makeIdent "", ds_index=NoIndex, ds_arity=1}} } =({tc_class = tc_class, tc_types = [TV tv], tc_var = var_info_ptr}, gs_varh) replace_generic_vars_with_class_var st atvs kind th error #! th = subst_gvs atvs th //---> ("replace_generic_vars_with_class_var called for", atvs, st) #! (new_st, th) = applySubstInSymbolType st th = (new_st, th, error) //---> ("replace_generic_vars_with_class_var returns", new_st) where subst_gvs atvs th=:{th_vars, th_attrs} #! tvs = [atv_variable \\ {atv_variable} <- atvs ] #! avs = [av \\ {atv_attribute=TA_Var av} <- atvs ] # th_vars = foldSt subst_tv tvs th_vars /* # th_attrs = case kind of KindConst -> case avs of [av:avs] -> foldSt (subst_av av) avs th_attrs [] -> th_attrs _ -> th_attrs */ // all generic vars get the same uniqueness variable # th_attrs = case avs of [av:avs] -> foldSt (subst_av av) avs th_attrs [] -> th_attrs = { th & th_vars = th_vars, th_attrs = th_attrs } subst_tv {tv_info_ptr} th_vars = writePtr tv_info_ptr (TVI_Type (TV class_var)) th_vars subst_av av {av_info_ptr} th_attrs = writePtr av_info_ptr (AVI_Attr (TA_Var av)) th_attrs //---> ("(1) writePtr av_info_ptr", ptrToInt av_info_ptr, av) // add an argument for generic info at the beginning add_generic_info st=:{st_arity, st_args, st_args_strictness} th=:{th_vars} #! {pds_module, pds_def} = gs_predefs . [PD_GenericInfo] #! pds_ident = predefined_idents . [PD_GenericInfo] #! type_symb = MakeTypeSymbIdent { glob_module = pds_module, glob_object = pds_def } pds_ident 0 #! st = { st & st_args = [ makeAType (TA type_symb []) TA_Multi : st_args] , st_arity = st_arity + 1 , st_args_strictness = insert_n_strictness_values_at_beginning 1 st_args_strictness } = (st, {th & th_vars = th_vars }) buildClassAndMember module_index class_index member_index kind gen_def=:{gen_ident, gen_pos} gs=:{gs_tvarh} # (class_var, gs_tvarh) = freshTypeVar (makeIdent "class_var") gs_tvarh #! (member_def, gs) = build_class_member class_var {gs & gs_tvarh = gs_tvarh} #! class_def = build_class class_var member_def = (class_def, member_def, gs) //---> ("buildClassAndMember", gen_def.gen_ident, kind) where class_ident = genericIdentToClassIdent gen_def.gen_ident kind member_ident = genericIdentToMemberIdent gen_def.gen_ident kind class_ds = {ds_index = class_index, ds_ident = class_ident, ds_arity = 1} build_class_member class_var gs=:{gs_varh} #! (type_ptr, gs_varh) = newPtr VI_Empty gs_varh #! (tc_var_ptr, gs_varh) = newPtr VI_Empty gs_varh #! gs = {gs & gs_varh = gs_varh } #! type_context = { tc_class = TCClass {glob_module = module_index, glob_object=class_ds} , tc_types = [ TV class_var ] , tc_var = tc_var_ptr } #! (member_type, gs) = buildMemberType gen_def kind class_var gs #! member_type = { member_type & st_context = [type_context : member_type.st_context] } #! member_def = { me_ident = member_ident, me_class = {glob_module = module_index, glob_object = class_index}, me_offset = 0, me_type = member_type, me_type_ptr = type_ptr, // empty me_class_vars = [class_var], // the same variable as in the class me_pos = gen_pos, me_priority = NoPrio } //---> ("member_type", member_type) = (member_def, gs) build_class class_var member_def=:{me_type} #! class_member = { ds_ident = member_ident , ds_index = member_index , ds_arity = me_type.st_arity } #! class_dictionary = { ds_ident = class_ident , ds_arity = 0 , ds_index = NoIndex/*index in the type def table, filled in later*/ } #! class_def = { class_ident = class_ident, class_arity = 1, class_args = [class_var], class_context = [], class_pos = gen_pos, class_members = createArray 1 class_member, class_cons_vars = 0, // dotted class variables class_dictionary = class_dictionary } = class_def //**************************************************************************************** // Convert generic cases //**************************************************************************************** convertGenericCases :: !*GenericState -> (!IndexRange, !*GenericState) convertGenericCases gs=:{gs_main_module, gs_used_modules, gs_predefs, gs_funs, gs_groups, gs_modules, gs_dcl_modules, gs_td_infos, gs_avarh, gs_tvarh, gs_varh, gs_genh, gs_exprh, gs_error} # heaps = { hp_expression_heap = gs_exprh , hp_var_heap = gs_varh , hp_generic_heap = gs_genh , hp_type_heaps = { th_vars = gs_tvarh, th_attrs = gs_avarh } } #! (first_fun_index, gs_funs) = usize gs_funs #! first_group_index = size gs_groups #! fun_info = (first_fun_index, first_group_index, [], []) #! (main_common_defs, gs_modules) = gs_modules ! [gs_main_module] #! main_module_instances = main_common_defs.com_instance_defs #! first_instance_index = size main_module_instances #! instance_info = (first_instance_index, []) #! (gs_modules, gs_dcl_modules, (fun_info, instance_info, gs_funs, gs_td_infos, heaps, gs_error)) = convert_modules 0 gs_modules gs_dcl_modules (fun_info, instance_info, gs_funs, gs_td_infos, heaps, gs_error) #! (fun_index, group_index, new_funs, new_groups) = fun_info #! gs_funs = arrayPlusRevList gs_funs new_funs #! gs_groups = arrayPlusRevList gs_groups new_groups #! (instance_index, new_instances) = instance_info #! com_instance_defs = arrayPlusRevList main_module_instances new_instances #! main_common_defs = {main_common_defs & com_instance_defs = com_instance_defs} #! gs_modules = {gs_modules & [gs_main_module] = main_common_defs} #! instance_fun_range = {ir_from=first_fun_index, ir_to=fun_index} # {hp_expression_heap, hp_var_heap, hp_generic_heap, hp_type_heaps={th_vars, th_attrs}} = heaps # gs = { gs & gs_modules = gs_modules , gs_dcl_modules = gs_dcl_modules , gs_td_infos = gs_td_infos , gs_funs = gs_funs , gs_groups = gs_groups , gs_error = gs_error , gs_avarh = th_attrs , gs_tvarh = th_vars , gs_varh = hp_var_heap , gs_genh = hp_generic_heap , gs_exprh = hp_expression_heap } = (instance_fun_range, gs) where convert_modules :: !Index !*{#CommonDefs} !*{#DclModule} ( FunsAndGroups , (!Index, ![ClassInstance]) , !*{#FunDef} , !*TypeDefInfos , !*Heaps , !*ErrorAdmin ) -> (!*{#CommonDefs} ,*{#DclModule} , ( FunsAndGroups , (!Index, ![ClassInstance]) , !*{#FunDef} , !*TypeDefInfos , !*Heaps , !*ErrorAdmin ) ) convert_modules module_index modules dcl_modules st | module_index == size modules = (modules, dcl_modules, st) #! (common_defs=:{com_gencase_defs}, modules) = modules ! [module_index] #! (dcl_module=:{dcl_functions}, dcl_modules) = dcl_modules ! [module_index] #! (dcl_functions, modules, st) = convert_module module_index com_gencase_defs {x\\x<-:dcl_functions} modules st #! dcl_modules = {dcl_modules & [module_index] = {dcl_module & dcl_functions = dcl_functions}} = convert_modules (inc module_index) modules dcl_modules st convert_module module_index com_gencase_defs dcl_functions modules st | inNumberSet module_index gs_used_modules #! dcl_functions = {x\\x<-:dcl_functions} = foldArraySt (convert_gencase module_index) com_gencase_defs (dcl_functions, modules, st) = (dcl_functions, modules, st) convert_gencase :: !Index !Index !GenericCaseDef (!*{#FunType} ,!*Modules , ( FunsAndGroups , (!Index, ![ClassInstance]) , !*{#FunDef} , !*TypeDefInfos , !*Heaps , !*ErrorAdmin ) ) -> (!*{#FunType} ,!*Modules , ( FunsAndGroups , (!Index, ![ClassInstance]) , !*{#FunDef} , !*TypeDefInfos , !*Heaps , !*ErrorAdmin ) ) convert_gencase module_index gc_index gencase=:{gc_ident, gc_type} st #! st = build_main_instance module_index gc_index gencase st #! st = build_shorthand_instances module_index gc_index gencase st = st //---> ("convert gencase", gc_ident, gc_type) build_main_instance module_index gc_index gencase=:{gc_ident, gc_kind, gc_generic, gc_pos, gc_type, gc_type_cons, gc_body = GCB_FunIndex fun_index} (dcl_functions, modules, (fun_info, ins_info, fun_defs, td_infos, heaps, error)) #! ({gen_classes}, modules, heaps) = get_generic_info gc_generic modules heaps # (Yes class_info) = lookupGenericClassInfo gc_kind gen_classes #! ({class_members}, modules) = modules ! [class_info.gci_module].com_class_defs.[class_info.gci_class] #! (member_def, modules) = modules ! [class_info.gci_module].com_member_defs.[class_members.[0].ds_index] #! ins_type = { it_vars = case gc_type_cons of TypeConsVar tv -> [tv] _ -> [] , it_types = [gc_type] , it_attr_vars = [] , it_context = [] } #! (fun_type, heaps, error) = determine_type_of_member_instance member_def ins_type heaps error #! (dcl_functions, heaps) = update_dcl_function fun_index gencase fun_type dcl_functions heaps #! (fun_info, fun_defs, td_infos, modules, heaps, error) = update_icl_function_if_needed module_index fun_index gencase fun_type fun_info fun_defs td_infos modules heaps error #! (fun_info, ins_info, heaps) = build_instance_and_member module_index class_info.gci_class gencase fun_type ins_type fun_info ins_info heaps = (dcl_functions, modules, (fun_info, ins_info, fun_defs, td_infos, heaps, error)) build_shorthand_instances module_index gc_index gencase=:{gc_kind=KindConst} st = st build_shorthand_instances module_index gc_index gencase=:{gc_kind=KindArrow kinds, gc_type, gc_generic, gc_ident, gc_pos} st = foldSt build_shorthand_instance [1 .. length kinds] st where build_shorthand_instance num_args (dcl_functions, modules, (fun_info, ins_info, fun_defs, td_infos, heaps, error)) #! (consumed_kinds, rest_kinds) = splitAt num_args kinds #! this_kind = case rest_kinds of [] -> KindConst _ -> KindArrow rest_kinds #! (class_info, (modules, heaps)) = get_class_for_kind gc_generic this_kind (modules, heaps) #! (arg_class_infos, (modules, heaps)) = mapSt (get_class_for_kind gc_generic) consumed_kinds (modules, heaps) #! ({class_members}, modules) = modules ! [class_info.gci_module].com_class_defs.[class_info.gci_class] #! (member_def, modules) = modules ! [class_info.gci_module].com_member_defs.[class_members.[0].ds_index] #! (ins_type, heaps) = build_instance_type gc_type arg_class_infos heaps #! (fun_type, heaps, error) = determine_type_of_member_instance member_def ins_type heaps error #! (memfun_ds, fun_info, heaps) = build_shorthand_instance_member module_index this_kind gencase fun_type arg_class_infos fun_info heaps #! ins_info = build_class_instance this_kind class_info.gci_class gencase memfun_ds ins_type ins_info = (dcl_functions, modules, (fun_info, ins_info, fun_defs, td_infos, heaps, error)) build_instance_type type class_infos heaps=:{hp_type_heaps=th=:{th_vars},hp_var_heap} #! arity = length class_infos #! type_var_names = [makeIdent ("a" +++ toString i) \\ i <- [1 .. arity]] #! (type_vars, th_vars) = mapSt freshTypeVar type_var_names th_vars #! type_var_types = [TV tv \\ tv <- type_vars] #! new_type_args = [makeAType t TA_Multi \\ t <- type_var_types] #! type = fill_type_args type new_type_args #! (contexts, hp_var_heap) = zipWithSt build_context class_infos type_vars hp_var_heap #! ins_type = { it_vars = type_vars , it_types = [type] , it_attr_vars = [] , it_context = contexts } = (ins_type, {heaps & hp_type_heaps = {th & th_vars = th_vars}, hp_var_heap = hp_var_heap}) //---> ("instance type for shorthand instance", gc_ident, gc_type, ins_type) where fill_type_args (TA type_symb_ident=:{type_arity} type_args) new_type_args #! type_arity = type_arity + length new_type_args #! type_args = type_args ++ new_type_args = TA {type_symb_ident & type_arity = type_arity} type_args fill_type_args TArrow [arg_type, res_type] = arg_type --> res_type fill_type_args TArrow [arg_type] = TArrow1 arg_type fill_type_args (TArrow1 arg_type) [res_type] = arg_type --> res_type fill_type_args type args = abort ("fill_type_args\n"---> ("fill_type_args", type, args)) build_context {gci_class, gci_module, gci_kind} tv hp_var_heap # (var_info_ptr, hp_var_heap) = newPtr VI_Empty hp_var_heap # type_context = { tc_class = TCClass { glob_module=gci_module // the same as icl module , glob_object = { ds_ident = genericIdentToClassIdent gc_ident gci_kind , ds_index = gci_class , ds_arity = 1 } } , tc_types = [TV tv] , tc_var = var_info_ptr } = (type_context, hp_var_heap) build_shorthand_instance_member module_index this_kind gencase=:{gc_generic, gc_ident, gc_kind, gc_pos} st class_infos fun_info heaps #! arg_var_names = ["x" +++ toString i \\ i <- [1..st.st_arity-SwitchGenericInfo 1 0]] #! (arg_var_exprs, arg_vars, heaps) = buildVarExprs arg_var_names heaps #! (expr_info_ptr, hp_expression_heap) = newPtr EI_Empty heaps.hp_expression_heap #! heaps = {heaps & hp_expression_heap = hp_expression_heap} #! fun_name = genericIdentToMemberIdent gc_ident this_kind # (gen_exprs, heaps) = mapSt (build_generic_app gc_generic gc_ident) class_infos heaps #! arg_exprs = gen_exprs ++ arg_var_exprs # (generic_info_expr, generic_info_var , heaps) = buildVarExpr "geninfo" heaps # arg_exprs = SwitchGenericInfo [generic_info_expr: arg_exprs] arg_exprs # arg_vars = SwitchGenericInfo [generic_info_var: arg_vars] arg_vars # (body_expr, heaps) = buildGenericApp gc_generic.gi_module gc_generic.gi_index gc_ident gc_kind arg_exprs heaps #! (st, heaps) = fresh_symbol_type st heaps #! (fun_ds, fun_info) = buildFunAndGroup fun_name arg_vars body_expr (Yes st) gs_main_module gc_pos fun_info = (fun_ds, fun_info, heaps) //---> ("shorthand instance body", body_expr) where build_generic_app {gi_module, gi_index} gc_ident {gci_kind} heaps # (generic_info_expr, heaps) = build_generic_info_expr heaps = buildGenericApp gi_module gi_index gc_ident gci_kind (SwitchGenericInfo [generic_info_expr] []) heaps build_generic_info_expr heaps = buildPredefConsApp PD_NoGenericInfo [] gs_predefs heaps build_class_instance this_kind class_index gencase member_fun_ds ins_type (ins_index, instances) # {gc_pos, gc_ident, gc_kind} = gencase #! class_ident = genericIdentToClassIdent gc_ident this_kind #! class_ds = {ds_index = class_index, ds_arity=1, ds_ident=class_ident} #! ins = { ins_class = {glob_module=gs_main_module, glob_object=class_ds} , ins_ident = class_ident , ins_type = ins_type , ins_members = {member_fun_ds} , ins_specials = SP_None , ins_pos = gc_pos } = (inc ins_index, [ins:instances]) get_generic_info {gi_module, gi_index} modules heaps=:{hp_generic_heap} #! ({gen_info_ptr}, modules) = modules ! [gi_module] . com_generic_defs . [gi_index] #! (gen_info, hp_generic_heap) = readPtr gen_info_ptr hp_generic_heap = (gen_info, modules, {heaps & hp_generic_heap = hp_generic_heap}) get_class_for_kind generic_gi kind (modules, heaps) #! ({gen_classes}, modules, heaps) = get_generic_info generic_gi modules heaps # (Yes class_info) = lookupGenericClassInfo kind gen_classes = (class_info, (modules, heaps)) determine_type_of_member_instance :: !MemberDef !InstanceType !*Heaps !*ErrorAdmin -> (!SymbolType, !*Heaps, !*ErrorAdmin) determine_type_of_member_instance {me_type, me_class_vars} ins_type heaps=:{hp_type_heaps, hp_var_heap} error #! (symbol_type, _, hp_type_heaps, _, error) = determineTypeOfMemberInstance me_type me_class_vars ins_type SP_None hp_type_heaps No error #! (st_context, hp_var_heap) = initializeContextVariables symbol_type.st_context hp_var_heap #! hp_type_heaps = clearSymbolType me_type hp_type_heaps #! symbol_type = {symbol_type & st_context = st_context} #! heaps = {heaps & hp_type_heaps = hp_type_heaps, hp_var_heap = hp_var_heap} = (symbol_type, heaps, error) //---> ("determine_type_of_member_instance", ins_type, symbol_type) update_dcl_function :: !Index !GenericCaseDef !SymbolType !*{#FunType} !*Heaps -> (!*{#FunType}, !*Heaps) update_dcl_function fun_index {gc_ident, gc_type_cons} symbol_type dcl_functions heaps | fun_index < size dcl_functions #! (symbol_type, heaps) = fresh_symbol_type symbol_type heaps #! (fun, dcl_functions) = dcl_functions ! [fun_index] #! fun = { fun & ft_ident = genericIdentToFunIdent gc_ident gc_type_cons , ft_type = symbol_type , ft_arity = symbol_type.st_arity } #! dcl_functions = { dcl_functions & [fun_index] = fun} = (dcl_functions, heaps) //---> ("update dcl function", fun.ft_ident, fun_index, symbol_type) = (dcl_functions, heaps) //---> ("update dcl function: not in the dcl module", fun_index) update_icl_function_if_needed module_index fun_index gencase fun_type fun_info fun_defs td_infos modules heaps error | module_index == gs_main_module // current module #! (fi, gi, fs, gs) = fun_info #! (gi, gs, fun_defs, td_infos, modules, heaps, error) = update_icl_function fun_index gencase fun_type gi gs fun_defs td_infos modules heaps error = ((fi, gi, fs, gs), fun_defs, td_infos, modules, heaps, error) = (fun_info, fun_defs, td_infos, modules, heaps, error) update_icl_function :: !Index !GenericCaseDef !SymbolType !Index ![Group] !*{#FunDef} !*TypeDefInfos !*{#CommonDefs} !*Heaps !*ErrorAdmin -> (!Index, ![Group], !*{#FunDef}, !*TypeDefInfos, !*{#CommonDefs}, !*Heaps, !*ErrorAdmin) update_icl_function fun_index gencase=:{gc_ident, gc_type_cons, gc_pos} st group_index groups fun_defs td_infos modules heaps error #! (st, heaps) = fresh_symbol_type st heaps #! (fun=:{fun_body, fun_arity}, fun_defs) = fun_defs ! [fun_index] #! fun_ident = genericIdentToFunIdent gc_ident gc_type_cons = case fun_body of TransformedBody tb // user defined case | fun_arity <> st.st_arity # error = reportError gc_ident gc_pos ("incorrect arity " +++ toString (SwitchGenericInfo (fun_arity-1) fun_arity) +++ ", expected " +++ toString (SwitchGenericInfo (st.st_arity-1) st.st_arity)) error -> (group_index, groups, fun_defs, td_infos, modules, heaps, error) #! fun = { fun & fun_ident = fun_ident , fun_type = Yes st } #! fun_defs = { fun_defs & [fun_index] = fun } -> (group_index, groups, fun_defs, td_infos, modules, heaps, error) //---> ("update_icl_function, TransformedBody", fun.fun_ident, fun_index, st) GeneratedBody // derived case #! (TransformedBody {tb_args, tb_rhs}, td_infos, modules, heaps, error) = buildGenericCaseBody gs_main_module gencase st gs_predefs td_infos modules heaps error //---> ("call buildGenericCaseBody\n") #! fun = makeFunction fun_ident fun_index group_index tb_args tb_rhs (Yes st) gs_main_module gc_pos #! fun_defs = { fun_defs & [fun_index] = fun } # group = {group_members=[fun_index]} -> (inc group_index, [group:groups], fun_defs, td_infos, modules, heaps, error) //---> ("update_icl_function, GeneratedBody", fun.fun_ident, fun_index, st) _ -> abort "update_icl_function: generic case body\n" // build wrapping instance for the generic case function build_instance_and_member :: !Index !Index !GenericCaseDef !SymbolType !InstanceType !FunsAndGroups (!Index, ![ClassInstance]) !*Heaps -> (!FunsAndGroups, (!Index, ![ClassInstance]), !*Heaps) build_instance_and_member module_index class_index gencase symbol_type ins_type fun_info ins_info heaps #! (memfun_ds, fun_info, heaps) = build_instance_member module_index gencase symbol_type fun_info heaps #! ins_info = build_class_instance class_index gencase memfun_ds ins_type ins_info = (fun_info, ins_info, heaps) where // Creates a function that just calls the generic case function // It is needed because the instance member must be in the same // module as the instance itself build_instance_member module_index gencase st fun_info heaps # {gc_ident, gc_pos, gc_type_cons, gc_kind, gc_body=GCB_FunIndex fun_index} = gencase #! arg_var_names = ["x" +++ toString i \\ i <- [1..st.st_arity]] #! (arg_var_exprs, arg_vars, heaps) = buildVarExprs arg_var_names heaps #! (expr_info_ptr, hp_expression_heap) = newPtr EI_Empty heaps.hp_expression_heap #! heaps = {heaps & hp_expression_heap = hp_expression_heap} #! fun_name = genericIdentToFunIdent gc_ident gc_type_cons #! expr = App { app_symb = { symb_ident=fun_name , symb_kind=SK_Function {glob_module=module_index, glob_object=fun_index} } , app_args = arg_var_exprs , app_info_ptr = expr_info_ptr } #! (st, heaps) = fresh_symbol_type st heaps #! memfun_name = genericIdentToMemberIdent gc_ident gc_kind #! (fun_ds, fun_info) = buildFunAndGroup memfun_name arg_vars expr (Yes st) gs_main_module gc_pos fun_info = (fun_ds, fun_info, heaps) build_class_instance class_index gencase member_fun_ds ins_type (ins_index, instances) # {gc_pos, gc_ident, gc_kind} = gencase #! class_ident = genericIdentToClassIdent gc_ident gc_kind #! class_ds = {ds_index = class_index, ds_arity=1, ds_ident=class_ident} #! ins = { ins_class = {glob_module=gs_main_module, glob_object=class_ds} , ins_ident = class_ident , ins_type = ins_type , ins_members = {member_fun_ds} , ins_specials = SP_None , ins_pos = gc_pos } = (inc ins_index, [ins:instances]) fresh_symbol_type :: !SymbolType !*Heaps -> (!SymbolType, !*Heaps) fresh_symbol_type st heaps=:{hp_type_heaps} # (fresh_st, hp_type_heaps) = freshSymbolType st hp_type_heaps = (fresh_st, {heaps & hp_type_heaps = hp_type_heaps}) //---> ("fresh_symbol_type") buildGenericCaseBody :: !Index // current icl module !GenericCaseDef !SymbolType // type of the instance function !PredefinedSymbols !*TypeDefInfos !*{#CommonDefs} !*Heaps !*ErrorAdmin -> ( !FunctionBody , !*TypeDefInfos , !*{#CommonDefs} , !*Heaps , !*ErrorAdmin ) buildGenericCaseBody main_module_index gc=:{gc_ident, gc_pos, gc_generic, gc_type_cons=TypeConsSymb {type_ident,type_index}} st predefs td_infos modules heaps error // get all the data we need #! (gen_def, modules) = modules ! [gc_generic.gi_module].com_generic_defs.[gc_generic.gi_index] //---> ("buildGenericCaseBody for", gc_ident, type_ident, st) #! (td_info=:{tdi_gen_rep}, td_infos) = td_infos ! [type_index.glob_module, type_index.glob_object] # (gen_type_rep=:{gtr_iso, gtr_type}) = case tdi_gen_rep of Yes x -> x No -> abort "sanity check: no generic representation\n" #! (type_def=:{td_args, td_arity}, modules) = modules ! [type_index.glob_module].com_type_defs.[type_index.glob_object] #! num_generic_info_args = SwitchGenericInfo 1 0 | td_arity <> st.st_arity - gen_def.gen_type.st_arity - num_generic_info_args = abort "sanity check: td_arity <> added arity of the symbol type\n" #! (generated_arg_exprs, original_arg_exprs, arg_vars, heaps) = build_arg_vars gen_def td_args heaps # (generic_info_var, heaps) = build_generic_info_arg heaps #! arg_vars = SwitchGenericInfo [generic_info_var:arg_vars] arg_vars #! (adaptor_expr, (modules, td_infos, heaps, error)) = build_adaptor_expr gc gen_def gen_type_rep (modules, td_infos, heaps, error) #! (specialized_expr, (td_infos, heaps, error)) = build_specialized_expr gc gtr_type td_args generated_arg_exprs (td_infos, heaps, error) #! body_expr = build_body_expr adaptor_expr specialized_expr original_arg_exprs = (TransformedBody {tb_args=arg_vars, tb_rhs=body_expr}, td_infos, modules, heaps, error) //---> ("buildGenericCaseBody", body_expr) where build_generic_info_arg heaps=:{hp_var_heap} // generic arg is never referenced in the generated body #! (fv_info_ptr, hp_var_heap) = newPtr VI_Empty hp_var_heap #! fv = {fv_count = 0, fv_ident = makeIdent "geninfo", fv_info_ptr = fv_info_ptr, fv_def_level = NotALevel} = (fv, {heaps & hp_var_heap = hp_var_heap}) build_arg_vars {gen_ident, gen_vars, gen_type} td_args heaps #! (generated_arg_exprs, generated_arg_vars, heaps) = buildVarExprs [ gen_ident.id_name +++ atv_variable.tv_ident.id_name \\ {atv_variable} <- td_args] heaps #! (original_arg_exprs, original_arg_vars, heaps) = buildVarExprs [ "x" +++ toString n \\ n <- [1 .. gen_type.st_arity]] heaps = (generated_arg_exprs, original_arg_exprs, generated_arg_vars ++ original_arg_vars, heaps) // adaptor that converts a function for the generic representation into a // function for the type itself build_adaptor_expr {gc_ident, gc_pos} {gen_type, gen_vars, gen_info_ptr} {gtr_iso} (modules, td_infos, heaps, error) #! (var_kinds, heaps) = get_var_kinds gen_info_ptr heaps #! non_gen_var_kinds = drop (length gen_vars) var_kinds #! non_gen_vars = gen_type.st_vars -- gen_vars #! (gen_env, heaps) = build_gen_env gtr_iso gen_vars heaps #! (non_gen_env, heaps) = build_non_gen_env non_gen_vars non_gen_var_kinds heaps #! spec_env = gen_env ++ non_gen_env #! curried_gen_type = curry_symbol_type gen_type #! (struct_gen_type, (modules, td_infos, heaps, error)) = convertATypeToGenTypeStruct bimap_ident gc_pos predefs curried_gen_type (modules, td_infos, heaps, error) #! (struct_gen_type, heaps) = simplifyStructOfGenType gen_vars struct_gen_type heaps #! (bimap_expr, (td_infos, heaps, error)) = specializeGeneric {gi_module=bimap_module,gi_index=bimap_index} struct_gen_type spec_env bimap_ident gc_pos main_module_index predefs (td_infos, heaps, error) #! adaptor_expr = buildRecordSelectionExpr bimap_expr PD_map_from predefs = (adaptor_expr, (modules, td_infos, heaps, error)) where {pds_module = bimap_module, pds_def=bimap_index} = predefs.[PD_GenericBimap] bimap_ident = predefined_idents.[PD_GenericBimap] get_var_kinds gen_info_ptr heaps=:{hp_generic_heap} #! ({gen_var_kinds}, hp_generic_heap) = readPtr gen_info_ptr hp_generic_heap = (gen_var_kinds, {heaps & hp_generic_heap = hp_generic_heap}) curry_symbol_type {st_args, st_result} = foldr (\x y -> makeAType (x --> y) TA_Multi) st_result st_args build_gen_env :: !DefinedSymbol ![TypeVar] !*Heaps -> (![(!TypeVar, !Expression)], !*Heaps) build_gen_env gtr_iso gen_vars heaps = mapSt build_iso_expr gen_vars heaps where build_iso_expr gen_var heaps #! (expr, heaps) = buildFunApp main_module_index gtr_iso [] heaps = ((gen_var, expr), heaps) build_non_gen_env :: ![TypeVar] ![TypeKind] !*Heaps -> (![(!TypeVar, !Expression)], !*Heaps) build_non_gen_env non_gen_vars kinds heaps = zipWithSt build_bimap_expr non_gen_vars kinds heaps where // build application of generic bimap for a specific kind build_bimap_expr non_gen_var KindConst heaps #! (expr, heaps) = buildPredefFunApp PD_bimapId [] predefs heaps = ((non_gen_var, expr), heaps) build_bimap_expr non_gen_var kind heaps # (generic_info_expr, heaps) = build_generic_info_expr heaps #! (expr, heaps) = buildGenericApp bimap_module bimap_index bimap_ident kind (SwitchGenericInfo [generic_info_expr] []) heaps = ((non_gen_var, expr), heaps) build_generic_info_expr heaps = buildPredefConsApp PD_NoGenericInfo [] predefs heaps // Old safe variant with bimapId for all non-generic variables. // Works only for type variables of kind star build_bimap_id_expr non_gen_var heaps #! (expr, heaps) = buildPredefFunApp PD_bimapId [] predefs heaps = ((non_gen_var, expr), heaps) // generic function specialzied to the generic representation of the type build_specialized_expr {gc_ident, gc_pos, gc_generic} gtr_type td_args generated_arg_exprs state #! spec_env = [(atv_variable, expr) \\ {atv_variable} <- td_args & expr <- generated_arg_exprs] = specializeGeneric gc_generic gtr_type spec_env gc_ident gc_pos main_module_index predefs state // the body expression build_body_expr adaptor_expr specialized_expr [] = adaptor_expr @ [specialized_expr] build_body_expr adaptor_expr specialized_expr original_arg_exprs = (adaptor_expr @ [specialized_expr]) @ original_arg_exprs //buildGenericCaseBody main_module_index {gc_ident,gc_pos, gc_generic, gc_type_cons=TypeConsSymb {type_index}} st predefs td_infos modules heaps error buildGenericCaseBody main_module_index {gc_ident,gc_pos} st predefs td_infos modules heaps error # error = reportError gc_ident gc_pos "cannot specialize to this type" error = (TransformedBody {tb_args=[], tb_rhs=EE}, td_infos, modules, heaps, error) //**************************************************************************************** // convert generic type contexts into normal type contexts //**************************************************************************************** convertGenericTypeContexts :: !*GenericState -> *GenericState convertGenericTypeContexts gs=:{gs_main_module, gs_used_modules, gs_predefs, gs_funs, gs_modules, gs_dcl_modules, gs_error, gs_avarh, gs_tvarh, gs_exprh, gs_varh, gs_genh} # heaps = { hp_expression_heap = gs_exprh , hp_var_heap = gs_varh , hp_generic_heap = gs_genh , hp_type_heaps = { th_vars = gs_tvarh, th_attrs = gs_avarh } } # (gs_funs, (gs_modules, heaps, gs_error)) = convert_functions 0 gs_funs (gs_modules, heaps, gs_error) # (gs_modules, gs_dcl_modules, (heaps, gs_error)) = convert_modules 0 gs_modules gs_dcl_modules (heaps, gs_error) # {hp_expression_heap, hp_var_heap, hp_generic_heap, hp_type_heaps={th_vars, th_attrs}} = heaps # gs = { gs & gs_funs = gs_funs , gs_modules = gs_modules , gs_dcl_modules = gs_dcl_modules , gs_error = gs_error , gs_avarh = th_attrs , gs_tvarh = th_vars , gs_varh = hp_var_heap , gs_genh = hp_generic_heap , gs_exprh = hp_expression_heap } = gs where convert_functions fun_index funs st | fun_index == size funs = (funs, st) # (fun, funs) = funs ! [fun_index] # (fun, st) = convert_function fun st # funs = {funs & [fun_index] = fun} = convert_functions (inc fun_index) funs st where convert_function :: !FunDef (!*Modules, !*Heaps, !*ErrorAdmin) -> (!FunDef, (!*Modules, !*Heaps, !*ErrorAdmin)) convert_function fun=:{fun_type=Yes symbol_type=:{st_context}, fun_ident, fun_pos} st # (has_converted, st_context, st) = convert_contexts fun_ident fun_pos st_context st | has_converted # fun = {fun & fun_type = Yes {symbol_type & st_context = st_context}} = (fun, st) = (fun, st) convert_function fun st = (fun, st) convert_modules module_index modules dcl_modules st | module_index == size modules = (modules, dcl_modules, st) # (modules, dcl_modules, st) = convert_module module_index modules dcl_modules st = convert_modules (inc module_index) modules dcl_modules st convert_module :: !Index !*Modules !*DclModules (!*Heaps, !*ErrorAdmin) -> (!*Modules, !*DclModules, (!*Heaps, !*ErrorAdmin)) convert_module module_index modules dcl_modules st | inNumberSet module_index gs_used_modules #! (common_defs, modules) = modules ! [module_index] #! (dcl_module=:{dcl_functions, dcl_common}, dcl_modules) = dcl_modules ! [module_index] #! (common_defs, modules, st) = convert_common_defs common_defs modules st #! (dcl_common, modules, st) = convert_common_defs dcl_common modules st #! (dcl_functions, modules, st) = convert_dcl_functions {x\\x<-:dcl_functions} modules st # dcl_modules = { dcl_modules & [module_index] = { dcl_module & dcl_functions = dcl_functions , dcl_common = dcl_common } } # modules = {modules & [module_index] = common_defs} = (modules, dcl_modules, st) | otherwise = (modules, dcl_modules, st) convert_common_defs common_defs=:{com_class_defs, com_member_defs, com_instance_defs} modules (heaps, error) # (com_class_defs, st) = updateArraySt convert_class {x\\x<-:com_class_defs} (modules, heaps, error) # (com_member_defs, st) = updateArraySt convert_member {x\\x<-:com_member_defs} st # (com_instance_defs, (modules, heaps, error)) = updateArraySt convert_instance {x\\x<-:com_instance_defs} st # common_defs = { common_defs & com_class_defs = com_class_defs , com_member_defs = com_member_defs , com_instance_defs = com_instance_defs } = (common_defs, modules, (heaps, error)) where convert_class _ class_def=:{class_ident, class_pos, class_context} st # (ok, class_context, st) = convert_contexts class_ident class_pos class_context st | ok # class_def={class_def & class_context = class_context} = (class_def, st) = (class_def, st) convert_member _ member_def=:{me_ident, me_pos, me_type=me_type=:{st_context}} st # (ok, st_context, st) = convert_contexts me_ident me_pos st_context st | ok # member_def={member_def & me_type = {me_type & st_context = st_context}} = (member_def, st) = (member_def, st) convert_instance _ ins=:{ins_type=ins_type=:{it_context}, ins_ident, ins_pos} st # (ok, it_context, st) = convert_contexts ins_ident ins_pos it_context st | ok # ins={ins & ins_type = {ins_type & it_context = it_context}} = (ins, st) = (ins, st) convert_dcl_functions dcl_functions modules (heaps, error) # (dcl_functions, (modules, heaps, error)) = updateArraySt convert_dcl_function dcl_functions (modules, heaps, error) = (dcl_functions, modules, (heaps, error)) where convert_dcl_function _ fun=:{ft_type=ft_type=:{st_context}, ft_ident, ft_pos} st # (ok, st_context, st) = convert_contexts ft_ident ft_pos st_context st | ok # fun={fun & ft_type = {ft_type & st_context = st_context}} = (fun, st) = (fun, st) convert_contexts fun_name fun_pos [] st = (False, [], st) convert_contexts fun_name fun_pos all_tcs=:[tc:tcs] st # (ok1, tc, st) = convert_context fun_name fun_pos tc st # (ok2, tcs, st) = convert_contexts fun_name fun_pos tcs st | ok1 || ok2 = (True, [tc:tcs], st) = (False, all_tcs, st) convert_context :: !Ident !Position !TypeContext (!*Modules, !*Heaps, !*ErrorAdmin) -> (!Bool, !TypeContext, (!*Modules, !*Heaps, !*ErrorAdmin)) convert_context fun_name fun_pos tc=:{tc_class=TCGeneric gtc=:{gtc_generic, gtc_kind, gtc_class}} (modules, heaps=:{hp_generic_heap}, error) # ({gen_info_ptr}, modules) = modules ! [gtc_generic.glob_module] . com_generic_defs . [gtc_generic.glob_object.ds_index] # ({gen_classes}, hp_generic_heap) = readPtr gen_info_ptr hp_generic_heap # opt_class_info = lookupGenericClassInfo gtc_kind gen_classes # (tc_class, error) = case opt_class_info of No # error = reportError fun_name fun_pos "no generic cases for this kind" error -> (TCGeneric gtc, error) Yes class_info # clazz = { glob_module = class_info.gci_module , glob_object = { ds_ident = genericIdentToClassIdent gtc_generic.glob_object.ds_ident gtc_kind , ds_arity = 1 , ds_index = class_info.gci_class } } //-> (TCClass clazz, error) /* AA HACK: dummy dictionary */ #! {pds_module, pds_def} = gs_predefs.[PD_TypeGenericDict] #! pds_ident = predefined_idents.[PD_TypeGenericDict] # dictionary = { glob_module = pds_module , glob_object={ds_ident=pds_ident, ds_arity=1, ds_index=pds_def} } -> (TCGeneric {gtc & gtc_class=clazz, gtc_dictionary=dictionary}, error) = (True, {tc & tc_class=tc_class}, (modules, {heaps & hp_generic_heap=hp_generic_heap}, error)) convert_context fun_name fun_pos tc st = (False, tc, st) //**************************************************************************************** // specialization //**************************************************************************************** specializeGeneric :: !GlobalIndex // generic index !GenTypeStruct // type to specialize to ![(TypeVar, Expression)] // specialization environment !Ident // generic/generic case !Position // of generic case !Index // main_module index !PredefinedSymbols (!*TypeDefInfos, !*Heaps, !*ErrorAdmin) -> ( !Expression , !(!*TypeDefInfos, !*Heaps, !*ErrorAdmin) ) specializeGeneric gen_index type spec_env gen_ident gen_pos main_module_index predefs (td_infos, heaps, error) #! heaps = set_tvs spec_env heaps #! (expr, (td_infos, heaps, error)) = specialize type (td_infos, heaps, error) #! heaps = clear_tvs spec_env heaps = (expr, (td_infos, heaps, error)) //---> ("specializeGeneric", expr) where set_tvs spec_env heaps=:{hp_type_heaps=hp_type_heaps=:{th_vars}} #! th_vars = foldSt write_tv spec_env th_vars with write_tv ({tv_info_ptr}, expr) th_vars = writePtr tv_info_ptr (TVI_Expr expr) th_vars = {heaps & hp_type_heaps = {hp_type_heaps & th_vars = th_vars }} clear_tvs spec_env heaps=:{hp_type_heaps=hp_type_heaps=:{th_vars}} #! th_vars = foldSt write_tv spec_env th_vars with write_tv ({tv_info_ptr}, _) th_vars = writePtr tv_info_ptr TVI_Empty th_vars = {heaps & hp_type_heaps = {hp_type_heaps & th_vars = th_vars }} specialize (GTSAppCons kind arg_types) st #! (arg_exprs, st) = mapSt specialize arg_types st = build_generic_app kind arg_exprs st specialize (GTSAppVar tv arg_types) st #! (arg_exprs, st) = mapSt specialize arg_types st #! (expr, st) = specialize_type_var tv st = (expr @ arg_exprs, st) specialize (GTSVar tv) st = specialize_type_var tv st specialize (GTSArrow x y) st #! (x, st) = specialize x st #! (y, st) = specialize y st = build_generic_app (KindArrow [KindConst, KindConst]) [x,y] st specialize (GTSCons cons_info_ds arg_type) st # (arg_expr, (td_infos, heaps, error)) = specialize arg_type st #! (generic_info_expr, heaps) = buildFunApp main_module_index cons_info_ds [] heaps #! (expr, heaps) = buildGenericApp gen_index.gi_module gen_index.gi_index gen_ident (KindArrow [KindConst]) [generic_info_expr, arg_expr] heaps = (expr, (td_infos, heaps, error)) specialize (GTSField field_info_ds arg_type) st # (arg_expr, (td_infos, heaps, error)) = specialize arg_type st #! (generic_info_expr, heaps) = buildFunApp main_module_index field_info_ds [] heaps #! (expr, heaps) = buildGenericApp gen_index.gi_module gen_index.gi_index gen_ident (KindArrow [KindConst]) [generic_info_expr, arg_expr] heaps = (expr, (td_infos, heaps, error)) specialize (GTSObject type_info_ds arg_type) st # (arg_expr, (td_infos, heaps, error)) = specialize arg_type st #! (generic_info_expr, heaps) = buildFunApp main_module_index type_info_ds [] heaps #! (expr, heaps) = buildGenericApp gen_index.gi_module gen_index.gi_index gen_ident (KindArrow [KindConst]) [generic_info_expr, arg_expr] heaps = (expr, (td_infos, heaps, error)) specialize GTSAppConsBimapKindConst (td_infos, heaps, error) # (expr, heaps) = buildPredefFunApp PD_bimapId [] predefs heaps = (expr, (td_infos, heaps, error)) specialize type (td_infos, heaps, error) #! error = reportError gen_ident gen_pos "cannot specialize " error = (EE, (td_infos, heaps, error)) specialize_type_var tv=:{tv_info_ptr} (td_infos, heaps=:{hp_type_heaps=th=:{th_vars}}, error) #! (TVI_Expr expr, th_vars) = readPtr tv_info_ptr th_vars = (expr, (td_infos, {heaps & hp_type_heaps = {th & th_vars = th_vars}}, error)) build_generic_app kind arg_exprs (td_infos, heaps, error) # (generic_info_expr, heaps) = buildPredefConsApp PD_NoGenericInfo [] predefs heaps # arg_exprs = SwitchGenericInfo [generic_info_expr:arg_exprs] arg_exprs #! (expr, heaps) = buildGenericApp gen_index.gi_module gen_index.gi_index gen_ident kind arg_exprs heaps = (expr, (td_infos, heaps, error)) //**************************************************************************************** // kind indexing of generic types //**************************************************************************************** // kind indexing: // t_{*} a1 ... an = t a1 ... an // t_{k->l} a1 ... an = forall b1...bn.(t_k b1 ... bn) -> (t_l (a1 b1) ... (an bn)) buildKindIndexedType :: !SymbolType // symbol type to kind-index ![TypeVar] // generic type variables !TypeKind // kind index !Ident // name for debugging !Position // position for debugging !*TypeHeaps // type heaps !*ErrorAdmin -> ( !SymbolType // instantiated type , ![ATypeVar] // fresh generic type variables , !*TypeHeaps // type heaps , !*ErrorAdmin ) buildKindIndexedType st gtvs kind ident pos th error #! th = clearSymbolType st th //---> ("buildKindIndexedType called for", kind, gtvs, st) #! (fresh_st, fresh_gtvs, th) = fresh_generic_type st gtvs th #! (gatvs, th) = collectAttrsOfTypeVarsInSymbolType fresh_gtvs fresh_st th #! (kind_indexed_st, _, th, error) = build_symbol_type fresh_st gatvs kind 1 th error #! th = clearSymbolType kind_indexed_st th #! th = clearSymbolType st th // paranoja = (kind_indexed_st, gatvs, th, error) //---> ("buildKindIndexedType returns", kind_indexed_st) where fresh_generic_type st gtvs th # (fresh_st, th) = freshSymbolType st th # fresh_gtvs = take (length gtvs) fresh_st.st_vars = (fresh_st, fresh_gtvs, th) //---> ("fresh_generic_type", fresh_gtvs, fresh_st) build_symbol_type :: !SymbolType // generic type, ![ATypeVar] // attributed generic variables !TypeKind // kind to specialize to !Int // current order (in the sense of the order of the kind) !*TypeHeaps !*ErrorAdmin -> ( !SymbolType // new generic type , ![ATypeVar] // fresh copies of generic variables created for the // generic arguments , !*TypeHeaps , !*ErrorAdmin ) build_symbol_type st gatvs KindConst order th error = (st, [], th, error) build_symbol_type st gatvs (KindArrow kinds) order th error | order > 2 //---> ("build_symbol_type called for", (KindArrow kinds), gatvs, st) # error = reportError ident pos "kinds of order higher then 2 are not supported" error = (st, [], th, error) # (arg_sts, arg_gatvss, th, error) = build_args st gatvs order kinds th error # (body_st, th) = build_body st gatvs (transpose arg_gatvss) th # num_added_args = length kinds # new_st = { st_vars = removeDup ( foldr (++) body_st.st_vars [st_vars \\ {st_vars}<-arg_sts]) , st_attr_vars = removeDup ( foldr (++) body_st.st_attr_vars [st_attr_vars \\ {st_attr_vars}<-arg_sts]) , st_args = [st_result \\ {st_result}<-arg_sts] ++ body_st.st_args , st_result = body_st.st_result , st_arity = body_st.st_arity + num_added_args , st_context = removeDup( foldr (++) body_st.st_context [st_context \\ {st_context} <- arg_sts]) , st_attr_env = removeDup( foldr (++) body_st.st_attr_env [st_attr_env \\ {st_attr_env} <- arg_sts]) , st_args_strictness = insert_n_lazy_values_at_beginning num_added_args body_st.st_args_strictness } = (new_st, flatten arg_gatvss, th, error) //---> ("build_symbol_type returns", arg_gatvss, st) build_args st gatvs order kinds th error # (arg_sts_and_gatvss, (_,th,error)) = mapSt (build_arg st gatvs order) kinds (1,th,error) # (arg_sts, arg_gatvss) = unzip arg_sts_and_gatvss = (arg_sts, arg_gatvss, th, error) build_arg :: !SymbolType // current part of the generic type ![ATypeVar] // generic type variables with their attrs !Int // order !TypeKind // kind corrseponding to the arg ( !Int // the argument number , !*TypeHeaps , !*ErrorAdmin ) -> ( (!SymbolType, [ATypeVar]) // fresh symbol type and generic variables , ( !Int // incremented argument number , !*TypeHeaps , !*ErrorAdmin ) ) build_arg st gatvs order kind (arg_num, th, error) #! th = clearSymbolType st th //---> ("build_arg called for", arg_num, kind, gatvs, st) #! (fresh_gatvs, th) = mapSt subst_gatv gatvs th #! (new_st, th) = applySubstInSymbolType st th #! (new_st, forall_atvs, th, error) = build_symbol_type new_st fresh_gatvs kind (inc order) th error #! (curry_st, th) = curryGenericArgType1 new_st ("cur" +++ toString order +++ postfix) th #! curry_st = adjust_forall curry_st forall_atvs = ((curry_st, fresh_gatvs), (inc arg_num, th, error)) //---> ("build_arg returns", fresh_gatvs, curry_st) where postfix = toString arg_num subst_gatv atv=:{atv_attribute, atv_variable} th=:{th_attrs, th_vars} # (tv, th_vars) = subst_gtv atv_variable th_vars # (attr, th_attrs) = subst_attr atv_attribute th_attrs = ( {atv & atv_variable = tv, atv_attribute = attr} , {th & th_vars = th_vars, th_attrs = th_attrs} ) // generic type var is replaced with a fresh one subst_gtv {tv_info_ptr, tv_ident} th_vars # (tv, th_vars) = freshTypeVar (postfixIdent tv_ident postfix) th_vars = (tv, writePtr tv_info_ptr (TVI_Type (TV tv)) th_vars) subst_attr (TA_Var {av_ident, av_info_ptr}) th_attrs # (av, th_attrs) = freshAttrVar (postfixIdent av_ident postfix) th_attrs = (TA_Var av, writePtr av_info_ptr (AVI_Attr (TA_Var av)) th_attrs) //---> ("(2) writePtr av_info_ptr", ptrToInt av_info_ptr, av) subst_attr TA_Multi th = (TA_Multi, th) subst_attr TA_Unique th = (TA_Unique, th) adjust_forall curry_st [] = curry_st adjust_forall curry_st=:{st_result} forall_atvs #! st_result = {st_result & at_type = TFA forall_atvs st_result.at_type} = { curry_st & st_result = st_result , st_attr_vars = curry_st.st_attr_vars -- [av \\ {atv_attribute=TA_Var av} <- forall_atvs] , st_vars = curry_st.st_vars -- [atv_variable \\ {atv_variable} <- forall_atvs] } //---> ("adjust forall", curry_st.st_vars, forall_atvs, curry_st.st_vars -- [atv_variable \\ {atv_variable} <- forall_atvs]) build_body :: !SymbolType ![ATypeVar] ![[ATypeVar]] !*TypeHeaps -> (!SymbolType , !*TypeHeaps ) build_body st gatvs arg_gatvss th # th = clearSymbolType st th # th = fold2St subst_gatv gatvs arg_gatvss th # (st, th) = applySubstInSymbolType st th //# st = add_propagating_inequalities st gatvs arg_gatvss = (st, th) where subst_gatv gatv=:{atv_variable} arg_gatvs th=:{th_vars} #! type_args = [ makeAType (TV atv_variable) atv_attribute \\ {atv_variable, atv_attribute} <- arg_gatvs] #! type = (CV atv_variable) :@: type_args #! th_vars = writePtr atv_variable.tv_info_ptr (TVI_Type type) th_vars = {th & th_vars = th_vars} add_propagating_inequalities st gatvs arg_gatvss # inequalities = zipWith make_inequalities gatvs arg_gatvss = {st & st_attr_env = st.st_attr_env ++ flatten inequalities} where make_inequalities gatv arg_gatvs = filterOptionals (map (make_inequality gatv) arg_gatvs) make_inequality {atv_attribute=TA_Var x} {atv_attribute=TA_Var y} = Yes {ai_offered = x, ai_demanded = y} // offered <= demanded = outer<=inner = x<=y make_inequality _ _ = No reportError name pos msg error=:{ea_file} //= checkErrorWithIdentPos (newPosition name pos) msg error # ea_file = ea_file <<< "Error " <<< (newPosition name pos) <<< ":" <<< msg <<< '\n' = { error & ea_file = ea_file , ea_ok = False } reportWarning name pos msg error=:{ea_file} # ea_file = ea_file <<< "Warning " <<< (newPosition name pos) <<< ":" <<< msg <<< '\n' = { error & ea_file = ea_file } //**************************************************************************************** // Type Helpers //**************************************************************************************** makeAType :: !Type !TypeAttribute -> AType makeAType type attr = { at_attribute = attr, at_type = type } makeATypeVar :: !TypeVar !TypeAttribute -> ATypeVar makeATypeVar tv attr = {atv_variable = tv, atv_attribute = attr} //---------------------------------------------------------------------------------------- // folding of a AType, depth first //---------------------------------------------------------------------------------------- class foldType t :: (Type .st -> .st) (AType .st -> .st) t .st -> .st instance foldType [a] | foldType a where foldType on_type on_atype types st = foldSt (foldType on_type on_atype) types st instance foldType (a,b) | foldType a & foldType b where foldType on_type on_atype (x,y) st = foldType on_type on_atype y (foldType on_type on_atype x st) instance foldType Type where foldType on_type on_atype type st # st = fold_type type st = on_type type st where fold_type (TA type_symb args) st = foldType on_type on_atype args st fold_type (TAS type_symb args _) st = foldType on_type on_atype args st fold_type (l --> r) st = foldType on_type on_atype (l,r) st fold_type (TArrow) st = st fold_type (TArrow1 t) st = foldType on_type on_atype t st fold_type (_ :@: args) st = foldType on_type on_atype args st fold_type (TB _) st = st fold_type (TFA tvs type) st = foldType on_type on_atype type st fold_type (GTV _) st = st fold_type (TV _) st = st fold_type t st = abort "foldType: does not match\n" ---> ("type", t) instance foldType AType where foldType on_type on_atype atype=:{at_type} st # st = foldType on_type on_atype at_type st = on_atype atype st instance foldType TypeContext where foldType on_type on_atype {tc_types} st = foldType on_type on_atype tc_types st //---------------------------------------------------------------------------------------- // mapping of a AType, depth first //---------------------------------------------------------------------------------------- class mapTypeSt type :: (Type -> u:(.st -> u:(Type, .st))) // called on each type before recursion (AType -> u:(.st -> u:(AType, .st))) // called on each attributed type before recursion (Type -> u:(.st -> u:(Type, .st))) // called on each type after recursion (AType -> u:(.st -> u:(AType, .st))) // called on each attributed type after recursion type .st -> u:(type, .st) mapTypeBeforeSt :: (Type -> u:(.st -> u:(Type, .st))) // called on each type before recursion (AType -> u:(.st -> u:(AType, .st))) // called on each attributed type before recursion type .st -> u:(type, .st) | mapTypeSt type mapTypeBeforeSt on_type_before on_atype_before type st = mapTypeSt on_type_before on_atype_before idSt idSt type st mapTypeAfterSt :: (Type -> u:(.st -> u:(Type, .st))) // called on each type after recursion (AType -> u:(.st -> u:(AType, .st))) // called on each attributed type after recursion type .st -> u:(type, .st) | mapTypeSt type mapTypeAfterSt on_type_after on_atype_after type st = mapTypeSt idSt idSt on_type_after on_atype_after type st instance mapTypeSt [a] | mapTypeSt a where mapTypeSt on_type_before on_atype_before on_type_after on_atype_after type st = mapSt (mapTypeSt on_type_before on_atype_before on_type_after on_atype_after) type st instance mapTypeSt (a, b) | mapTypeSt a & mapTypeSt b where mapTypeSt on_type_before on_atype_before on_type_after on_atype_after (x, y) st #! (x1, st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after x st #! (y1, st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after y st = ((x1,y1), st) instance mapTypeSt Type where mapTypeSt on_type_before on_atype_before on_type_after on_atype_after type st #! (type1, st) = on_type_before type st #! (type2, st) = map_type type1 st #! (type3, st) = on_type_after type2 st = (type3, st) //---> ("mapTypeSt Type", type, type1, type2, type3) where map_type (TA type_symb_ident args) st #! (args, st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after args st = (TA type_symb_ident args, st) map_type (TAS type_symb_ident args strictness) st #! (args, st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after args st = (TAS type_symb_ident args strictness, st) map_type (l --> r) st #! ((l,r), st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after (l,r) st = (l --> r, st) map_type TArrow st = (TArrow, st) map_type (TArrow1 t) st #! (t, st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after t st = (TArrow1 t, st) map_type (cv :@: args) st #! (args, st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after args st = (cv :@: args, st) map_type t=:(TB _) st = (t, st) map_type (TFA tvs type) st #! (type, st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after type st = (TFA tvs type, st) map_type t=:(GTV _) st = (t, st) map_type t=:(TV _) st = (t, st) map_type t st = abort "mapTypeSt: type does not match\n" ---> ("type", t) instance mapTypeSt AType where mapTypeSt on_type_before on_atype_before on_type_after on_atype_after atype st #! (atype, st) = on_atype_before atype st #! (at_type, st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after atype.at_type st = on_atype_after {atype & at_type = at_type} st instance mapTypeSt TypeContext where mapTypeSt on_type_before on_atype_before on_type_after on_atype_after tc=:{tc_types} st #! (tc_types, st) = mapTypeSt on_type_before on_atype_before on_type_after on_atype_after tc_types st = ({tc&tc_types=tc_types}, st) //----------------------------------------------------------------------- //----------------------------------------------------------------------- // allocate fresh type variable freshTypeVar :: !Ident !*TypeVarHeap -> (!TypeVar, !*TypeVarHeap) freshTypeVar name th_vars # (info_ptr, th_vars) = newPtr TVI_Empty th_vars = ({tv_ident = name, tv_info_ptr = info_ptr}, th_vars) // allocate fresh attribute variable freshAttrVar :: !Ident !*AttrVarHeap -> (!AttributeVar, !*AttrVarHeap) freshAttrVar name th_attrs # (info_ptr, th_attrs) = newPtr AVI_Empty th_attrs = ({av_ident = name, av_info_ptr = info_ptr}, th_attrs) // take a fresh copy of a SymbolType freshSymbolType :: !SymbolType // symbol type to take fresh !*TypeHeaps // variable storage -> ( !SymbolType // fresh symbol type , !*TypeHeaps // variable storage ) freshSymbolType st th=:{th_vars, th_attrs} #! (fresh_st_vars, th_vars) = mapSt subst_type_var st.st_vars th_vars //---> ("freshSymbolType called for", st) #! (fresh_st_attr_vars, th_attrs) = mapSt subst_attr_var st.st_attr_vars th_attrs #! th = {th & th_vars = th_vars, th_attrs = th_attrs} #! (fresh_st_args, th) = fresh_type st.st_args th #! (fresh_st_result, th) = fresh_type st.st_result th #! (fresh_st_context, th) = fresh_type st.st_context th #! (fresh_st_attr_env, th) = mapSt fresh_ineq st.st_attr_env th #! fresh_st = { st & st_args = fresh_st_args , st_result = fresh_st_result , st_context = fresh_st_context , st_attr_env = fresh_st_attr_env , st_vars = fresh_st_vars , st_attr_vars = fresh_st_attr_vars } #! th = clearSymbolType fresh_st th #! th = clearSymbolType st th #! th = assertSymbolType fresh_st th #! th = assertSymbolType st th = (fresh_st, th) //---> ("freshSymbolType returns", fresh_st) where subst_type_var :: !TypeVar !*TypeVarHeap -> (!TypeVar, !*TypeVarHeap) subst_type_var tv=:{tv_info_ptr} th_vars # (new_ptr, th_vars) = newPtr TVI_Empty th_vars = ({tv & tv_info_ptr=new_ptr}, writePtr tv_info_ptr (TVI_TypeVar new_ptr) th_vars) subst_attr_var :: !AttributeVar !*AttrVarHeap -> (!AttributeVar, !*AttrVarHeap) subst_attr_var av=:{av_info_ptr} th_attrs # (new_ptr, th_attrs) = newPtr AVI_Empty th_attrs = ({av & av_info_ptr = new_ptr}, writePtr av_info_ptr (AVI_AttrVar new_ptr) th_attrs) fresh_type :: type !*TypeHeaps -> (type, !*TypeHeaps) | mapTypeSt type fresh_type t st = mapTypeBeforeSt on_type on_atype t st on_type (TV tv) th #! (tv, th) = on_type_var tv th = (TV tv, th) on_type (GTV tv) th #! (tv, th) = on_type_var tv th = (GTV tv, th) on_type (CV tv=:{tv_info_ptr} :@: args) th=:{th_vars} #! (tv, th) = on_type_var tv th = (CV tv :@: args, th) on_type (TFA atvs type) th #! (fresh_atvs, th) = mapSt subst_atv atvs th // the variables in the type will be substituted by // the recursive call of mapType = (TFA fresh_atvs type, th) where subst_atv atv=:{atv_variable, atv_attribute} th=:{th_vars, th_attrs} #! (atv_variable, th_vars) = subst_type_var atv_variable th_vars # (atv_attribute, th_attrs) = subst_attr atv_attribute th_attrs = ( {atv & atv_variable = atv_variable, atv_attribute = atv_attribute} , {th & th_vars = th_vars, th_attrs = th_attrs}) subst_attr (TA_Var av=:{av_info_ptr}) th_attrs # (av_info, th_attrs) = readPtr av_info_ptr th_attrs = case av_info of AVI_Empty # (av, th_attrs) = subst_attr_var av th_attrs -> (TA_Var av, th_attrs) AVI_AttrVar av_info_ptr -> (TA_Var {av & av_info_ptr = av_info_ptr}, th_attrs) subst_attr TA_Unique th_attrs = (TA_Unique, th_attrs) subst_attr TA_Multi th_attrs = (TA_Multi, th_attrs) on_type type th = (type, th) on_atype atype=:{at_attribute=TA_Var av} th #! (fresh_av, th) = on_attr_var av th = ({atype & at_attribute=TA_Var fresh_av}, th) //---> ("on_atype av", av, fresh_av) on_atype atype th = (atype, th) fresh_ineq :: !AttrInequality !*TypeHeaps -> (!AttrInequality, !*TypeHeaps) fresh_ineq ai=:{ai_demanded,ai_offered} th #! (ai_demanded, th) = on_attr_var ai_demanded th #! (ai_offered, th) = on_attr_var ai_offered th = ({ai & ai_demanded = ai_demanded, ai_offered = ai_offered}, th) on_type_var tv=:{tv_info_ptr} th=:{th_vars} #! (tv_info, th_vars) = readPtr tv_info_ptr th_vars #! tv = case tv_info of TVI_TypeVar new_ptr -> {tv & tv_info_ptr = new_ptr} _ -> abort ("freshSymbolType, invalid tv_info\n" ---> tv_info) = (tv, {th & th_vars = th_vars}) on_attr_var av=:{av_info_ptr} th=:{th_attrs} #! (av_info, th_attrs) = readPtr av_info_ptr th_attrs #! av = case av_info of AVI_AttrVar new_ptr -> {av & av_info_ptr = new_ptr} //---> ("fresh attr var", av.av_ident, ptrToInt av_info_ptr, ptrToInt new_ptr) _ -> abort ("freshSymbolType, invalid av_info\n" ---> av_info) = ( av, {th & th_attrs = th_attrs}) assertSymbolType :: !SymbolType !*TypeHeaps -> *TypeHeaps assertSymbolType {st_args, st_result, st_context} th = foldType on_type on_atype ((st_args, st_result), st_context) th where on_type :: !Type !*TypeHeaps -> *TypeHeaps on_type (TV tv) th=:{th_vars} #! (tv_info, th_vars) = readPtr tv.tv_info_ptr th_vars #! th = {th & th_vars = th_vars} = case tv_info of TVI_Empty -> th _ -> (abort "TV tv_info not empty\n") --->(tv, tv_info) on_type (CV tv :@: _) th=:{th_vars} #! (tv_info, th_vars) = readPtr tv.tv_info_ptr th_vars #! th = {th & th_vars = th_vars} = case tv_info of TVI_Empty -> th _ -> (abort "CV tv_info not empty\n") --->(tv, tv_info) on_type (TFA atvs type) th=:{th_attrs, th_vars} #! th_attrs = foldSt on_av [av \\ {atv_attribute=TA_Var av} <- atvs] th_attrs #! th_vars = foldSt on_tv [atv_variable\\{atv_variable} <- atvs] th_vars = {th & th_attrs = th_attrs, th_vars = th_vars } where on_av av th_attrs #! (av_info, th_attrs) = readPtr av.av_info_ptr th_attrs = case av_info of AVI_Empty -> th_attrs _ -> (abort "TFA av_info not empty\n") --->(av, av_info) on_tv tv th_vars #! (tv_info, th_vars) = readPtr tv.tv_info_ptr th_vars = case tv_info of TVI_Empty -> th_vars _ -> (abort "TFA tv_info not empty\n") --->(tv, tv_info) on_type _ th = th on_atype :: !AType !*TypeHeaps -> *TypeHeaps on_atype {at_attribute=TA_Var av} th=:{th_attrs} #! (av_info, th_attrs) = readPtr av.av_info_ptr th_attrs #! th = {th & th_attrs = th_attrs} = case av_info of AVI_Empty -> th _ -> (abort "av_info not empty\n") --->(av, av_info) on_atype _ th = th // build curried type out of SymbolType buildCurriedType :: ![AType] !AType !TypeAttribute ![AttrInequality] ![AttributeVar] !String !Int !*AttrVarHeap -> (!AType, ![AttrInequality], ![AttributeVar], !Int, !*AttrVarHeap) buildCurriedType [] type cum_attr attr_env attr_vars attr_var_name attr_store th_attrs = (type, attr_env, attr_vars, attr_store, th_attrs) buildCurriedType [at=:{at_attribute}] type cum_attr attr_env attr_vars attr_var_name attr_store th_attrs # atype = makeAType (at --> type) cum_attr = (atype, attr_env, attr_vars, attr_store, th_attrs) buildCurriedType [at=:{at_attribute}:ats] type cum_attr attr_env attr_vars attr_var_name attr_store th_attrs # (next_cum_attr, new_attr_env, attr_vars, attr_store, th_attrs) = combine_attributes at_attribute cum_attr attr_env attr_vars attr_store th_attrs (res_type, attr_env, attr_vars, attr_store, th_attrs) = buildCurriedType ats type next_cum_attr attr_env attr_vars attr_var_name attr_store th_attrs # atype = makeAType (at --> res_type) cum_attr = (atype, attr_env, attr_vars, attr_store, th_attrs) where combine_attributes TA_Unique cum_attr attr_env attr_vars attr_store th_attrs = (TA_Unique, attr_env, attr_vars, attr_store, th_attrs) combine_attributes (TA_Var attr_var) (TA_Var cum_attr_var) attr_env attr_vars attr_store th_attrs #! (new_attr_var, th_attrs) = freshAttrVar (makeIdent (attr_var_name +++ toString attr_store)) th_attrs # attr_env = [ { ai_demanded = cum_attr_var,ai_offered = new_attr_var } , { ai_demanded = attr_var, ai_offered = new_attr_var } : attr_env ] = ( TA_Var new_attr_var, attr_env, [new_attr_var:attr_vars], inc attr_store, th_attrs) combine_attributes (TA_Var _) cum_attr attr_env attr_vars attr_store th_attrs = (cum_attr, attr_env, attr_vars, attr_store, th_attrs) combine_attributes _ (TA_Var cum_attr_var) attr_env attr_vars attr_store th_attrs #! (new_attr_var, th_attrs) = freshAttrVar (makeIdent (attr_var_name +++ toString attr_store)) th_attrs # attr_env = [ { ai_demanded = cum_attr_var,ai_offered = new_attr_var }: attr_env] = ( TA_Var new_attr_var, attr_env, [new_attr_var:attr_vars], inc attr_store, th_attrs) combine_attributes _ cum_attr attr_env attr_vars attr_store th_attrs = (cum_attr, attr_env, attr_vars, attr_store, th_attrs) // Build curried type out of symbol type. // Starts with TA_Multi cumulative attribute. // This is the weakest requirement, // since we do not know how the generic argument will be used // in the instance functions. It depends on the instance type. curryGenericArgType :: !SymbolType !String !*TypeHeaps -> (!SymbolType, !*TypeHeaps) curryGenericArgType st=:{st_args, st_result, st_attr_env, st_attr_vars} attr_var_name th=:{th_attrs} #! (atype, attr_env, attr_vars, attr_store, th_attrs) = buildCurriedType st_args st_result TA_Multi st_attr_env st_attr_vars attr_var_name 1 th_attrs # curried_st = { st & st_args = [] , st_arity = 0 , st_result = atype , st_attr_env = attr_env , st_attr_vars = attr_vars } = (curried_st, {th & th_attrs = th_attrs}) //---> ("curryGenericArgType", st, curried_st) curryGenericArgType1 :: !SymbolType !String !*TypeHeaps -> (!SymbolType, !*TypeHeaps) curryGenericArgType1 st=:{st_args, st_result, st_attr_env, st_attr_vars} attr_var_name th=:{th_attrs} # (atype, attr_vars, av_num, th_attrs) = curry st_args st_result 1 th_attrs # curried_st = { st & st_args = [] , st_arity = 0 , st_result = atype , st_attr_vars = attr_vars } = (curried_st, {th & th_attrs = th_attrs}) //---> ("curryGenericArgType", st, curried_st) where // outermost closure gets TA_Multi attribute curry [] res av_num th_attrs = (res, [], av_num, th_attrs) curry [arg:args] res av_num th_attrs #! (res, avs, av_num, th_attrs) = curry1 args res av_num th_attrs #! atype = makeAType (arg --> res) TA_Multi = (atype, avs, av_num, th_attrs) // inner closures get TA_Var attributes curry1 [] res av_num th_attrs = (res, [], av_num, th_attrs) curry1 [arg:args] res av_num th_attrs #! (res, avs, av_num, th_attrs) = curry1 args res av_num th_attrs #! (av, th_attrs) = freshAttrVar (makeIdent (attr_var_name +++ toString av_num)) th_attrs #! atype = makeAType (arg --> res) (TA_Var av) = (atype, [av:avs], inc av_num, th_attrs) //---------------------------------------------------------------------------------------- // write empty value in the variable heaps //---------------------------------------------------------------------------------------- clearType t th = foldType clear_type clear_atype t th where clear_type (TV tv) th = clear_type_var tv th clear_type (GTV tv) th = clear_type_var tv th clear_type (CV tv :@: _) th = clear_type_var tv th clear_type (TFA atvs type) th #! th = foldSt clear_attr [atv_attribute \\ {atv_attribute} <- atvs] th #! th = foldSt clear_type_var [atv_variable \\ {atv_variable} <- atvs] th = th clear_type _ th = th clear_atype {at_attribute} th = clear_attr at_attribute th clear_attr (TA_Var av) th = clear_attr_var av th clear_attr (TA_RootVar av) th = clear_attr_var av th clear_attr _ th = th clear_type_var {tv_info_ptr} th=:{th_vars} = {th & th_vars = writePtr tv_info_ptr TVI_Empty th_vars} clear_attr_var {av_info_ptr} th=:{th_attrs} = {th & th_attrs = writePtr av_info_ptr AVI_Empty th_attrs} clearSymbolType st th // clears not only st_vars and st_attrs, but also TFA variables = clearType ((st.st_result, st.st_args), st.st_context) th //---------------------------------------------------------------------------------------- // collect variables //---------------------------------------------------------------------------------------- collectTypeVarsAndAttrVars :: !type !*TypeHeaps -> (![TypeVar] ,![AttributeVar] ,!*TypeHeaps ) | foldType type collectTypeVarsAndAttrVars type th #! th = clearType type th #! (tvs, avs, th) = foldType collect_type_var collect_attr type ([], [], th) #! th = clearType type th = (tvs, avs, th) where collect_type_var (TV tv) st = add_type_var tv st collect_type_var (GTV tv) st = add_type_var tv st collect_type_var (CV tv :@: _) st = add_type_var tv st collect_type_var (TFA forall_atvs type) (tvs, avs, th_vars) #! forall_tvs = [atv_variable\\{atv_variable}<-forall_atvs] #! forall_avs = [av \\ {atv_attribute=TA_Var av}<-forall_atvs] = (tvs -- forall_tvs, avs -- forall_avs, th_vars) //---> ("collectTypeVarsAndAttrVars TFA", tvs, forall_tvs, tvs -- forall_tvs) collect_type_var t st = st add_type_var tv (tvs, avs, th=:{th_vars}) # (was_used, th_vars) = markTypeVarUsed tv th_vars # th = {th & th_vars = th_vars} | was_used = (tvs, avs, th) //---> ("collectTypeVarsAndAttrVars: TV was used", tv) = ([tv:tvs], avs, th) //---> ("collectTypeVarsAndAttrVars: TV was not used", tv) collect_attr {at_attribute} st = collect_attr_var at_attribute st collect_attr_var (TA_Var av) st = add_attr_var av st collect_attr_var (TA_RootVar av) st = add_attr_var av st collect_attr_var _ st = st add_attr_var av (atvs, avs, th=:{th_attrs}) # (was_used, th_attrs) = markAttrVarUsed av th_attrs # th = {th & th_attrs = th_attrs} | was_used = (atvs, avs, th) = (atvs, [av:avs], th) collectTypeVars type th # (tvs, _, th) = collectTypeVarsAndAttrVars type th = (tvs, th) collectAttrVars type th # (_, avs, th) = collectTypeVarsAndAttrVars type th = (avs, th) collectAttrsOfTypeVars :: ![TypeVar] type !*TypeHeaps -> (![ATypeVar], !*TypeHeaps) | foldType type collectAttrsOfTypeVars tvs type th #! (th=:{th_vars}) = clearType type th //---> ("collectAttrsOfTypeVars called for", tvs) # th_vars = foldSt (\{tv_info_ptr} h->writePtr tv_info_ptr TVI_Used h) tvs th_vars #! (atvs, th_vars) = foldType on_type on_atype type ([], th_vars) # th_vars = foldSt (\{tv_info_ptr} h->writePtr tv_info_ptr TVI_Empty h) tvs th_vars #! th = clearType type {th & th_vars= th_vars} = (atvs, th) //---> ("collectAttrsOfTypeVars returns", atvs) where on_type type st = st on_atype {at_type=TV tv, at_attribute} st = on_type_var tv at_attribute st on_atype {at_type=GTV tv, at_attribute} st = on_type_var tv at_attribute st on_atype {at_type=(CV tv :@: _), at_attribute} st = on_type_var tv at_attribute st //??? TFA -- seems that it is not needed on_atype _ st = st on_type_var tv=:{tv_info_ptr} attr (atvs, th_vars) #! (tvi, th_vars) = readPtr tv_info_ptr th_vars = case tvi of TVI_Used # th_vars = writePtr tv_info_ptr TVI_Empty th_vars -> ([makeATypeVar tv attr : atvs], th_vars) TVI_Empty -> (atvs, th_vars) collectAttrsOfTypeVarsInSymbolType tvs {st_args, st_result} th = collectAttrsOfTypeVars tvs [st_result:st_args] th // marks empty type vars used, // returns whether the type var was already used markTypeVarUsed tv=:{tv_info_ptr} th_vars # (tv_info, th_vars) = readPtr tv_info_ptr th_vars = case tv_info of TVI_Empty -> (False, writePtr tv_info_ptr TVI_Used th_vars) TVI_Used -> (True, th_vars) _ -> (abort "markTypeVarUsed: wrong tv_info ") ---> (tv, tv_info) // marks empty attr vars used // returns whether the attr var was already used markAttrVarUsed {av_info_ptr} th_attrs # (av_info, th_attrs) = readPtr av_info_ptr th_attrs = case av_info of AVI_Empty -> (False, writePtr av_info_ptr AVI_Used th_attrs) AVI_Used -> (True, th_attrs) simplifyTypeApp :: !Type ![AType] -> Type simplifyTypeApp (TA type_cons=:{type_arity} cons_args) type_args = TA { type_cons & type_arity = type_arity + length type_args } (cons_args ++ type_args) simplifyTypeApp (TAS type_cons=:{type_arity} cons_args strictness) type_args = TAS { type_cons & type_arity = type_arity + length type_args } (cons_args ++ type_args) strictness simplifyTypeApp (CV tv :@: type_args1) type_args2 = CV tv :@: (type_args1 ++ type_args2) simplifyTypeApp TArrow [type1, type2] = type1 --> type2 simplifyTypeApp TArrow [type] = TArrow1 type simplifyTypeApp (TArrow1 type1) [type2] = type1 --> type2 simplifyTypeApp (TV tv) type_args = CV tv :@: type_args simplifyTypeApp (TB _) type_args = TE simplifyTypeApp (TArrow1 _) type_args = TE //---------------------------------------------------------------------------------------- // substitutions //---------------------------------------------------------------------------------------- // // Uninitialized variables are not substituted, but left intact // // This behaviour is needed for kind indexing generic types, // where generic variables are substituted and non-generic variables // are not // applySubst :: !type !*TypeHeaps -> (!type, !*TypeHeaps) | mapTypeSt type applySubst type th = mapTypeAfterSt on_type on_atype type th where on_type type=:(TV {tv_info_ptr}) th=:{th_vars} # (tv_info, th_vars) = readPtr tv_info_ptr th_vars # th = {th & th_vars = th_vars} = case tv_info of TVI_Type t -> (t, th) TVI_Empty -> (type, th) on_type (GTV _) th = abort "GTV" on_type type=:(CV {tv_info_ptr} :@: args) th=:{th_vars} # (tv_info, th_vars) = readPtr tv_info_ptr th_vars # th = {th & th_vars = th_vars} = case tv_info of TVI_Type t -> (simplifyTypeApp t args, th) TVI_Empty -> (type, th) //on_type type=:(TFA atvs t) th=:{th_vars} // = abort "applySubst TFA" on_type type th = (type, th) on_atype atype=:{at_attribute} th=:{th_attrs} # (at_attribute, th_attrs) = subst_attr at_attribute th_attrs = ({atype & at_attribute = at_attribute}, {th & th_attrs = th_attrs}) subst_attr attr=:(TA_Var {av_info_ptr}) th_attrs # (av_info, th_attrs) = readPtr av_info_ptr th_attrs = case av_info of AVI_Attr a -> (a, th_attrs) AVI_Empty -> (attr, th_attrs) subst_attr (TA_RootVar {av_info_ptr}) th_attrs # (av_info, th_attrs) = readPtr av_info_ptr th_attrs = case av_info of AVI_Attr a -> (a, th_attrs) subst_attr TA_Multi th = (TA_Multi, th) subst_attr TA_Unique th = (TA_Unique, th) applySubstInSymbolType st=:{st_args, st_result, st_attr_env, st_context} th #! (new_st_args, th) = applySubst st.st_args th #! (new_st_result, th) = applySubst st.st_result th #! (new_st_context, th) = applySubst st.st_context th #! (new_st_attr_env, th) = mapSt subst_ineq st.st_attr_env th #! th = clear_type_vars st.st_vars th #! th = clear_attr_vars st.st_attr_vars th #! (new_st_vars, new_st_attr_vars, th) = collectTypeVarsAndAttrVars ((new_st_args,new_st_result), new_st_context) th #! new_st = { st & st_args = new_st_args , st_result = new_st_result , st_context = new_st_context , st_attr_env = new_st_attr_env , st_vars = new_st_vars , st_attr_vars = new_st_attr_vars } #! th = clearSymbolType st th #! th = assertSymbolType new_st th #! th = assertSymbolType st th = (new_st, th) //---> ("applySubstInSymbolType", new_st) where subst_ineq ai=:{ai_demanded,ai_offered} th # (ai_demanded, th) = subst_attr_var ai_demanded th # (ai_offered, th) = subst_attr_var ai_offered th = ({ai & ai_demanded = ai_demanded, ai_offered = ai_offered}, th) subst_attr_var av=:{av_info_ptr} th=:{th_attrs} # (av_info, th_attrs) = readPtr av_info_ptr th_attrs # th = {th & th_attrs = th_attrs} = case av_info of AVI_Attr (TA_Var av1) -> (av1, th) AVI_Attr _ -> (av, th) AVI_Empty -> (av, th) clear_type_vars tvs th=:{th_vars} #! th_vars = foldSt (\{tv_info_ptr} h->writePtr tv_info_ptr TVI_Empty h) tvs th_vars = {th & th_vars = th_vars} clear_attr_vars avs th=:{th_attrs} #! th_attrs = foldSt (\{av_info_ptr} h->writePtr av_info_ptr AVI_Empty h) avs th_attrs = {th & th_attrs = th_attrs} expandSynonymType :: !CheckedTypeDef !TypeAttribute ![AType] !*TypeHeaps -> (!Type, !*TypeHeaps) expandSynonymType {td_rhs=SynType {at_type}, td_args, td_attribute} ta_attr ta_args th #! th_attrs = bind_attribute td_attribute ta_attr th.th_attrs #! th = fold2St bind_type_and_attr td_args ta_args { th & th_attrs = th_attrs } #! (at_type, th) = applySubst at_type th #! th_attrs = clear_attribute td_attribute th.th_attrs #! th = foldSt clear_type_and_attr td_args { th & th_attrs = th_attrs } = (at_type, th) where bind_type_and_attr {atv_attribute, atv_variable={tv_info_ptr}} {at_type,at_attribute} type_heaps=:{th_vars,th_attrs} = { type_heaps & th_vars = th_vars <:= (tv_info_ptr, TVI_Type at_type), th_attrs = bind_attribute atv_attribute at_attribute th_attrs } bind_attribute (TA_Var {av_info_ptr}) attr th_attrs = th_attrs <:= (av_info_ptr, AVI_Attr attr) bind_attribute _ _ th_attrs = th_attrs clear_type_and_attr {atv_attribute, atv_variable={tv_info_ptr}} type_heaps=:{th_vars,th_attrs} = { type_heaps & th_vars = th_vars <:= (tv_info_ptr, TVI_Empty), th_attrs = clear_attribute atv_attribute th_attrs } clear_attribute (TA_Var {av_info_ptr}) th_attrs = th_attrs <:= (av_info_ptr, AVI_Empty) clear_attribute _ th_attrs = th_attrs expandSynonymType td ta_attr ta_args th = abort "expanding not a synonym type\n" //**************************************************************************************** // Function Helpers //**************************************************************************************** makeFunction :: !Ident !Index !Index ![FreeVar] !Expression !(Optional SymbolType) !Index !Position -> FunDef makeFunction ident fun_index group_index arg_vars body_expr opt_sym_type main_dcl_module_n fun_pos #! (arg_vars, local_vars, free_vars) = collectVars body_expr arg_vars | not (isEmpty free_vars) = abort "makeFunction: free_vars is not empty\n" #! fun_def = { fun_ident = ident , fun_arity = length arg_vars , fun_priority = NoPrio , fun_body = TransformedBody {tb_args = arg_vars, tb_rhs = body_expr } , fun_type = opt_sym_type , fun_pos = fun_pos , fun_kind = FK_Function cNameNotLocationDependent , fun_lifted = 0 , fun_info = { fi_calls = collectCalls main_dcl_module_n body_expr , fi_group_index = group_index , fi_def_level = NotALevel , fi_free_vars = [] , fi_local_vars = local_vars , fi_dynamics = [] , fi_properties = 0 } } = fun_def //---> ("makeFunction", ident, fun_index, main_dcl_module_n, fun_def.fun_info.fi_calls) // build function and buildFunAndGroup :: !Ident ![FreeVar] !Expression !(Optional SymbolType) !Index !Position !FunsAndGroups -> (!DefinedSymbol, FunsAndGroups) buildFunAndGroup ident arg_vars body_expr opt_sym_type main_dcl_module_n fun_pos (fun_index, group_index, funs, groups) # fun = makeFunction ident fun_index group_index arg_vars body_expr opt_sym_type main_dcl_module_n fun_pos # group = {group_members = [fun_index]} # def_sym = {ds_ident=ident, ds_arity=fun.fun_arity, ds_index=fun_index} = (def_sym, (inc fun_index, inc group_index, [fun:funs], [group:groups])) buildUndefFunAndGroup ident st main_dcl_module_n fun_pos fun_info predefs heaps #! arg_var_names = [ "x" +++ toString i \\ i <- [1 .. st.st_arity]] #! (arg_vars,heaps) = mapSt build_free_var arg_var_names heaps #! (expr, heaps) = buildPredefFunApp PD_undef [] predefs heaps = buildFunAndGroup ident arg_vars expr (Yes st) main_dcl_module_n fun_pos fun_info where build_free_var :: !String !*Heaps -> (!FreeVar, !*Heaps) build_free_var name heaps=:{hp_var_heap} # (var_info_ptr, hp_var_heap) = newPtr VI_Empty hp_var_heap # var_ident = { id_name = name, id_info = nilPtr } # free_var = { fv_def_level = NotALevel, fv_count = 0, fv_info_ptr = var_info_ptr, fv_ident = var_ident} = (free_var, {heaps & hp_var_heap = hp_var_heap}) /* buildIdFunction :: !DefinedSymbol // the desired function name and index Int // group index !Index // current module number !*Heaps // heaps -> ( !FunDef // created function definition , !*Heaps // heaps ) buildIdFunction def_sym group_index gs_main_dcl_module_n heaps # (arg_expr, arg_var, heaps) = buildVarExpr "x" heaps # fun_def = makeFunction def_sym group_index [arg_var] arg_expr No [] gs_main_dcl_module_n NoPos = (fun_def, heaps) */ /* buildUndefFunction :: !DefinedSymbol // the desired function name and index !Int // group index !PredefinedSymbols // predefined symbols !Index // current module number !*Heaps // heaps -> ( !FunDef // created function definition , !*Heaps // heaps ) buildUndefFunction def_sym group_index predefs gs_main_dcl_module_n heaps # names = [ "x" +++ toString i \\ i <- [1 .. def_sym.ds_arity]] # (arg_vars, heaps) = mapSt build_free_var names heaps # (body_expr, heaps) = buildUndefFunApp [] predefs heaps //# (body_expr, heaps) = buildUNIT predefs heaps # fun_def = makeFunction def_sym group_index arg_vars body_expr No [] gs_main_dcl_module_n NoPos = (fun_def, heaps) where build_free_var :: !String !*Heaps -> (!FreeVar, !*Heaps) build_free_var name heaps=:{hp_var_heap} # (var_info_ptr, hp_var_heap) = newPtr VI_Empty hp_var_heap # var_ident = { id_name = name, id_info = nilPtr } # free_var = { fv_def_level = NotALevel, fv_count = 0, fv_info_ptr = var_info_ptr, fv_ident = var_ident} = (free_var, {heaps & hp_var_heap = hp_var_heap}) */ //**************************************************************************************** // Expr Helpers //**************************************************************************************** //======================================================================================== // Primitive expressions //======================================================================================== makeIntExpr :: Int -> Expression makeIntExpr value = BasicExpr (BVI (toString value)) makeStringExpr :: String -> Expression makeStringExpr str = BasicExpr (BVS (adjust_string str)) where adjust_string str = { ch \\ ch <- ['\"'] ++ adjust_chars [ch \\ ch <-: str] ++ ['\"'] } adjust_chars [] = [] adjust_chars ['\\':cs] = ['\\','\\' : adjust_chars cs] adjust_chars [c:cs] = [c : adjust_chars cs] makeListExpr :: [Expression] !PredefinedSymbols !*Heaps -> (Expression, !*Heaps) makeListExpr [] predefs heaps = buildPredefConsApp PD_NilSymbol [] predefs heaps makeListExpr [expr:exprs] predefs heaps # (list_expr, heaps) = makeListExpr exprs predefs heaps = buildPredefConsApp PD_ConsSymbol [expr, list_expr] predefs heaps buildConsApp :: !Index DefinedSymbol ![Expression] !*Heaps -> (!Expression, !*Heaps) buildConsApp cons_mod {ds_ident, ds_index, ds_arity} arg_exprs heaps=:{hp_expression_heap} # (expr_info_ptr, hp_expression_heap) = newPtr EI_Empty hp_expression_heap # cons_glob = {glob_module = cons_mod, glob_object = ds_index} # expr = App { app_symb = { symb_ident = ds_ident, symb_kind = SK_Constructor cons_glob }, app_args = arg_exprs, app_info_ptr = expr_info_ptr} # heaps = { heaps & hp_expression_heap = hp_expression_heap } = (expr, heaps) buildFunApp :: !Index !DefinedSymbol ![Expression] !*Heaps -> (!Expression, !*Heaps) buildFunApp fun_mod {ds_ident, ds_index} arg_exprs heaps=:{hp_expression_heap} # (expr_info_ptr, hp_expression_heap) = newPtr EI_Empty hp_expression_heap # fun_glob = {glob_module = fun_mod, glob_object = ds_index} # expr = App { app_symb = { symb_ident = ds_ident, symb_kind = SK_Function fun_glob }, app_args = arg_exprs, app_info_ptr = expr_info_ptr} # heaps = { heaps & hp_expression_heap = hp_expression_heap } = (expr, heaps) buildPredefFunApp :: !Int [Expression] !PredefinedSymbols !*Heaps -> (!Expression, !*Heaps) buildPredefFunApp predef_index args predefs heaps # {pds_module, pds_def} = predefs.[predef_index] # fun_ds = { ds_index = pds_def , ds_ident = predefined_idents.[predef_index] , ds_arity = 0 // not used } = buildFunApp pds_module fun_ds args heaps buildGenericApp :: !Index !Index !Ident !TypeKind ![Expression] !*Heaps -> (!Expression, !*Heaps) buildGenericApp gen_module gen_index gen_ident kind arg_exprs heaps=:{hp_expression_heap} # (expr_info_ptr, hp_expression_heap) = newPtr EI_Empty hp_expression_heap # glob_index = {glob_module = gen_module, glob_object = gen_index} # expr = App { app_symb = { symb_ident = gen_ident, symb_kind = SK_Generic glob_index kind }, app_args = arg_exprs, app_info_ptr = expr_info_ptr} # heaps = { heaps & hp_expression_heap = hp_expression_heap } = (expr, heaps) buildPredefConsApp :: !Int [Expression] !PredefinedSymbols !*Heaps -> (!Expression, !*Heaps) buildPredefConsApp predef_index args predefs heaps=:{hp_expression_heap} # {pds_module, pds_def} = predefs.[predef_index] # pds_ident = predefined_idents.[predef_index] # global_index = {glob_module = pds_module, glob_object = pds_def} # symb_ident = { symb_ident = pds_ident , symb_kind = SK_Constructor global_index } # (expr_info_ptr, hp_expression_heap) = newPtr EI_Empty hp_expression_heap # app = App {app_symb = symb_ident, app_args = args, app_info_ptr = expr_info_ptr} = (app, {heaps & hp_expression_heap = hp_expression_heap}) buildPredefConsPattern :: !Int ![FreeVar] !Expression !PredefinedSymbols -> AlgebraicPattern buildPredefConsPattern predef_index vars expr predefs # {pds_module, pds_def} = predefs.[predef_index] # pds_ident = predefined_idents.[predef_index] # cons_def_symbol = { ds_ident = pds_ident, ds_arity = length vars, ds_index = pds_def } # pattern = { ap_symbol = {glob_module = pds_module, glob_object = cons_def_symbol}, ap_vars = vars, ap_expr = expr, ap_position = NoPos } = pattern buildCaseExpr :: Expression CasePatterns !*Heaps -> (!Expression, !*Heaps) buildCaseExpr case_arg case_alts heaps=:{hp_expression_heap} # (expr_info_ptr, hp_expression_heap) = newPtr EI_Empty hp_expression_heap # expr = Case { case_expr = case_arg , case_guards = case_alts , case_default = No , case_ident = No , case_info_ptr = expr_info_ptr , case_explicit = False , case_default_pos = NoPos } # heaps = { heaps & hp_expression_heap = hp_expression_heap} = (expr, heaps) buildRecordSelectionExpr :: !Expression !Index !PredefinedSymbols -> Expression buildRecordSelectionExpr record_expr predef_field predefs # {pds_module, pds_def} = predefs . [predef_field] # pds_ident = predefined_idents . [predef_field] # selector = { glob_module = pds_module, glob_object = {ds_ident = pds_ident, ds_index = pds_def, ds_arity = 1}} = Selection NormalSelector record_expr [RecordSelection selector 1] //============================================================================= // variables //============================================================================= // build a new variable and an expression associated with it buildVarExpr :: !String // variable name !*Heaps -> (!Expression // variable expression , !FreeVar // variable , !*Heaps ) buildVarExpr name heaps=:{hp_var_heap, hp_expression_heap} # (expr_info_ptr, hp_expression_heap) = newPtr EI_Empty hp_expression_heap # (var_info_ptr, hp_var_heap) = newPtr VI_Empty hp_var_heap # var_ident = makeIdent name # var = Var {var_ident = var_ident, var_expr_ptr = expr_info_ptr, var_info_ptr = var_info_ptr } # hp_var_heap = writePtr var_info_ptr (VI_Expression var) hp_var_heap # heaps = { heaps & hp_var_heap = hp_var_heap, hp_expression_heap = hp_expression_heap } # fv = {fv_count = 1/* if 0, trans crashes*/, fv_ident = var_ident, fv_info_ptr = var_info_ptr, fv_def_level = NotALevel} = (var, fv, heaps) buildVarExprs [] heaps = ([], [], heaps) buildVarExprs [x:xs] heaps # (y, z, heaps) = buildVarExpr x heaps # (ys, zs, heaps) = buildVarExprs xs heaps = ([y:ys], [z:zs], heaps) //============================================================================= // recursion over expressions //============================================================================= //----------------------------------------------------------------------------- // fold expression applies a function to each node of an expression // recursively: // first apply the function, then recurse //----------------------------------------------------------------------------- foldExpr :: (Expression -> .st -> .st) // function to apply at each node Expression // expression to run throuh .st // state -> .st // updated state foldExpr f expr=:(Var _) st = f expr st foldExpr f expr=:(App {app_args}) st # st = f expr st = foldSt (foldExpr f) app_args st foldExpr f expr1=:(expr @ exprs) st # st = f expr st = foldSt (foldExpr f) [expr:exprs] st foldExpr f expr=:(Let {let_lazy_binds, let_strict_binds, let_expr}) st # st = f expr st # st = foldSt (fold_let_binds f) let_strict_binds st # st = foldSt (fold_let_binds f) let_lazy_binds st = foldExpr f let_expr st where fold_let_binds f {lb_src} st = foldExpr f lb_src st foldExpr f expr=:(Case {case_expr,case_guards,case_default}) st # st = f expr st # st = foldExpr f case_expr st # st = fold_guards f case_guards st # st = foldOptional (foldExpr f) case_default st = st where fold_guards f (AlgebraicPatterns gi aps) st = foldSt (foldExpr f) [ap_expr\\{ap_expr}<-aps] st fold_guards f (BasicPatterns gi bps) st = foldSt (foldExpr f) [bp_expr\\{bp_expr}<-bps] st fold_guards f (DynamicPatterns dps) st = foldSt (foldExpr f) [dp_rhs\\{dp_rhs}<-dps] st fold_guards f NoPattern st = st foldExpr f expr=:(Selection _ expr1 _) st # st = f expr st = foldExpr f expr1 st foldExpr f expr=:(Update expr1 sels expr2) st # st = f expr st # st = foldExpr f expr1 st # st = foldSt (fold_sel f) sels st # st = foldExpr f expr2 st = st where fold_sel f (RecordSelection _ _) st = st fold_sel f (ArraySelection _ _ expr) st = foldExpr f expr st fold_sel f (DictionarySelection _ _ _ expr) st = foldExpr f expr st foldExpr f expr=:(RecordUpdate _ expr1 binds) st # st = f expr st # st = foldExpr f expr1 st # st = foldSt (foldExpr f) [bind_src\\{bind_src}<-binds] st = st foldExpr f expr=:(TupleSelect _ _ expr1) st # st = f expr st = foldExpr f expr1 st foldExpr f expr=:(BasicExpr _) st = f expr st foldExpr f expr=:(Conditional {if_cond,if_then,if_else}) st # st = f expr st # st = foldExpr f if_cond st # st = foldExpr f if_then st # st = foldOptional (foldExpr f) if_else st = st foldExpr f expr=:(MatchExpr _ expr1) st # st = f expr st = foldExpr f expr1 st foldExpr f expr=:(DynamicExpr {dyn_expr}) st # st = f expr st = foldExpr f dyn_expr st foldExpr f EE st = st foldExpr f expr st = abort "generic.icl: foldExpr does not match\n"//f expr st ---> ("foldExpr does not match", expr) /* //----------------------------------------------------------------------------- // map expression applies a function to each node of an expression // recursively: // first recurse, then apply the function //----------------------------------------------------------------------------- mapExprSt :: !(Expression -> w:st -> u:(Expression, w:st)) !Expression w:st -> v: ( Expression , w:st ) , [v<=w,u<=v] mapExprSt f (App app=:{app_args}) st # (app_args, st) = mapSt (mapExprSt f) app_args st = f (App { app & app_args = app_args }) st mapExprSt f (Let lad=:{let_lazy_binds, let_strict_binds, let_expr}) st # (let_lazy_binds, st) = mapSt map_bind let_lazy_binds st # (let_strict_binds, st) = mapSt map_bind let_strict_binds st # (let_expr, st) = mapExprSt f let_expr st # lad = { lad & let_expr = let_expr , let_lazy_binds = let_lazy_binds , let_strict_binds = let_strict_binds } = f (Let lad) st where map_bind b=:{lb_src} st # (lb_src, st) = mapExprSt f lb_src st = ({b & lb_src = lb_src}, st) mapExprSt f (Selection a expr b) st # (expr, st) = mapExprSt f expr st = f (Selection a expr b) st mapExprSt f (Update e1 x e2) st # (e1, st) = mapExprSt f e1 st # (e2, st) = mapExprSt f e2 st = f (Update e1 x e2) st mapExprSt f (RecordUpdate x expr binds) st # (expr, st) = mapExprSt f expr st # (binds, st) = mapSt map_bind binds st = f (RecordUpdate x expr binds) st where map_bind b=:{bind_src} st # (bind_dst, st) = mapExprSt f bind_src st = ({b & bind_src = bind_src}, st) mapExprSt f (TupleSelect x y expr) st # (expr, st) = mapExprSt f expr st = f (TupleSelect x y expr) st mapExprSt f (Conditional cond=:{if_cond, if_then, if_else}) st # (if_cond, st) = mapExprSt f if_cond st # (if_then, st) = mapExprSt f if_then st # (if_else, st) = mapOptionalSt (mapExprSt f) if_else st /* # (if_else, st) = case if_else of (Yes x) # (x, st) = mapExprSt f x st -> (Yes x, st) No -> (No, st) */ = f (Conditional {cond & if_cond = if_cond, if_then = if_then, if_else = if_else}) st mapExprSt f (MatchExpr y expr) st # (expr, st) = mapExprSt f expr st = f (MatchExpr y expr) st mapExprSt f (DynamicExpr dyn=:{dyn_expr}) st # (dyn_expr, st) = mapExprSt f dyn_expr st = f (DynamicExpr {dyn& dyn_expr = dyn_expr}) st mapExprSt f (Case c=:{case_expr, case_guards, case_default=case_default}) st # (case_expr, st) = mapExprSt f case_expr st # (case_guards, st) = map_patterns case_guards st # (case_default, st) = case case_default of (Yes x) # (x, st) = mapExprSt f x st -> (Yes x, st) No -> (No, st) # new_case = {c & case_expr=case_expr, case_guards=case_guards, case_default=case_default} = f (Case new_case) st where map_patterns (AlgebraicPatterns index pats) st # (pats, st) = mapSt map_alg_pattern pats st = (AlgebraicPatterns index pats, st) map_patterns (BasicPatterns bt pats) st # (pats, st) = mapSt map_basic_pattern pats st = (BasicPatterns bt pats, st) map_patterns (DynamicPatterns pats) st # (pats, st) = mapSt map_dyn_pattern pats st = (DynamicPatterns pats, st) map_alg_pattern pat=:{ap_expr} st # (ap_expr, st) = mapExprSt f ap_expr st = ({pat & ap_expr = ap_expr}, st) map_basic_pattern pat=:{bp_expr} st # (bp_expr, st) = mapExprSt f bp_expr st = ({pat & bp_expr = bp_expr}, st) map_dyn_pattern pat=:{dp_rhs} st # (dp_rhs, st) = mapExprSt f dp_rhs st = ({pat & dp_rhs = dp_rhs}, st) mapExprSt f expr st = f expr st */ // needed for collectCalls instance == FunCall where (==) (FunCall x _) (FunCall y _) = x == y // collect function calls made in the expression collectCalls :: !Index !Expression -> [FunCall] collectCalls current_module expr = removeDup (foldExpr get_call expr []) where get_call (App {app_symb={symb_kind=SK_Function {glob_module,glob_object}, symb_ident}}) indexes | glob_module == current_module = [FunCall glob_object NotALevel : indexes] //---> ("collect call ", symb_ident, glob_object) = indexes //---> ("do not collect call ", symb_ident, glob_module, glob_object) get_call _ indexes = indexes // collects variables and computes the refernce counts collectVars :: !Expression // expression to collect variables in ![FreeVar] // function argument variables -> ( ![FreeVar] // argument variables (with updated ref count) , ![FreeVar] // local variables , ![FreeVar] // free_variables ) collectVars expr arg_vars # arg_vars = [ {v & fv_count = 0} \\ v <- arg_vars] = foldExpr collect_vars expr (arg_vars, [], []) where collect_vars (Var {var_ident, var_info_ptr}) (arg_vars, local_vars, free_vars) # var = {fv_ident = var_ident, fv_count = 1, fv_info_ptr = var_info_ptr, fv_def_level = NotALevel} # (added, arg_vars) = add_var var arg_vars | added = (arg_vars, local_vars, free_vars) # (added, local_vars) = add_var var local_vars | added = (arg_vars, local_vars, free_vars) # (added, free_vars) = add_var var free_vars | added = (arg_vars, local_vars, free_vars) = (arg_vars, local_vars, [var:free_vars]) where add_var var [] = (False, []) add_var var [v=:{fv_count,fv_info_ptr}:vs] | var.fv_info_ptr == fv_info_ptr = (True, [{v&fv_count = inc fv_count}:vs]) # (added, vs) = add_var var vs = (added, [v:vs]) collect_vars (Let {let_lazy_binds, let_strict_binds}) (arg_vars, local_vars, free_vars) # vars = [{lb_dst&fv_count=0} \\ {lb_dst} <- (let_lazy_binds ++ let_strict_binds)] # (local_vars, free_vars) = foldSt add_local_var vars (local_vars, free_vars) = (arg_vars, local_vars, free_vars) collect_vars (Case {case_guards}) (arg_vars, local_vars, free_vars) # vars = [{v&fv_count=0} \\ v <- collect case_guards] # (local_vars, free_vars) = foldSt add_local_var vars (local_vars, free_vars) = (arg_vars, local_vars, free_vars) where collect (AlgebraicPatterns _ aps) = flatten [ap_vars\\{ap_vars}<-aps] collect (BasicPatterns _ bps) = [] collect (DynamicPatterns dps) = [dp_var \\ {dp_var}<-dps] collect NoPattern = [] collect_vars expr st = st add_local_var var (local_vars, []) = ([var:local_vars], []) add_local_var var (local_vars, free_vars=:[fv:fvs]) | var.fv_info_ptr == fv.fv_info_ptr = ([fv:local_vars], fvs) # (local_vars, fvs1) = add_local_var var (local_vars, fvs) = (local_vars, [fv:fvs1]) //**************************************************************************************** // Array helpers //**************************************************************************************** //updateArray :: (Int a -> a) *{a} -> *{a} updateArray f xs = map_array 0 xs where map_array n xs #! (s, xs) = usize xs | n == s = xs # (x, xs) = xs ! [n] = map_array (inc n) {xs & [n] = f n x} //updateArray1 :: (Int .a -> .a) *{.a} .a -> *{.a} updateArray1 f xs dummy # (xs, _) = map_array 0 xs dummy = xs where map_array n xs d #! (s, xs) = usize xs | n == s = (xs, d) # (x, xs) = replace xs n d # x = f n x # (d, xs) = replace xs n x = map_array (inc n) xs d update2dArray f xss = updateArray1 (\n xs -> updateArray (f n) xs) xss {} //updateArraySt :: (Int a .st -> (a, .st)) *{a} .st -> (*{a}, .st) updateArraySt f xs st = map_array 0 xs st where map_array n xs st #! (s, xs) = usize xs | n == s = (xs, st) # (x, xs) = xs![n] # (x, st) = f n x st = map_array (inc n) {xs&[n]=x} st //updateArraySt :: (Int .a .st -> (.a, .st)) *{a} .a .st -> (*{a}, .st) updateArray1St f xs dummy st # (xs, _, st) = map_array 0 xs dummy st = (xs, st) where map_array n xs d st #! (s, xs) = usize xs | n == s = (xs, d, st) # (x, xs) = replace xs n d # (x, st) = f n x st # (d, xs) = replace xs n x = map_array (inc n) xs d st update2dArraySt f xss st = updateArray1St (\n xs st -> updateArraySt (f n) xs st) xss {} st //foldArraySt :: (Int a .st -> .st) {a} .st -> .st foldArraySt f xs st = fold_array 0 xs st where fold_array n xs st #! (s, xs) = usize xs | n == s = st # st = f n xs.[n] st = fold_array (inc n) xs st //foldUArraySt :: (Int a .st -> .st) u:{a} .st -> (u:{a}, .st) foldUArraySt f array st = map_array 0 array st where map_array n array st # (s, array) = usize array | n == s = (array, st) # (x, array) = array ! [n] # st = f x st = map_array (inc n) array st //**************************************************************************************** // General Helpers //**************************************************************************************** idSt x st = (x, st) (--) infixl 5 :: u:[a] .[a] -> u:[a] | Eq a (--) x y = removeMembers x y // should actually be in the standard library transpose [] = [] transpose [[] : xss] = transpose xss transpose [[x:xs] : xss] = [[x : [hd l \\ l <- xss]] : transpose [xs : [ tl l \\ l <- xss]]] unzip3 [] = ([], [], []) unzip3 [(x1,x2,x3):xs] # (x1s, x2s, x3s) = unzip3 xs = ([x1:x1s], [x2:x2s], [x3:x3s]) foldOptional f No st = st foldOptional f (Yes x) st = f x st mapOptional f No = No mapOptional f (Yes x) = Yes (f x) mapOptionalSt f No st = (No, st) mapOptionalSt f (Yes x) st # (y, st) = f x st = (Yes y, st) filterOptionals [] = [] filterOptionals [No : xs] = filterOptionals xs filterOptionals [Yes x : xs] = [x : filterOptionals xs] mapSt2 f [] st1 st2 = ([], st1, st2) mapSt2 f [x:xs] st1 st2 # (y, st1, st2) = f x st1 st2 # (ys, st1, st2) = mapSt2 f xs st1 st2 = ([y:ys], st1, st2) zipWith f [] [] = [] zipWith f [x:xs] [y:ys] = [f x y : zipWith f xs ys] zipWith f _ _ = abort "zipWith: lists of different length\n" zipWithSt f [] [] st = ([], st) zipWithSt f [x:xs] [y:ys] st # (z, st) = f x y st # (zs, st) = zipWithSt f xs ys st = ([z:zs], st) zipWithSt f _ _ st = abort "zipWithSt: lists of different length\n"