implementation module checkKindCorrectness
import StdEnv
import syntax, containers, checksupport, utilities
//import RWSDebug
checkKindCorrectness :: !Index !Index IndexRange !{#CommonDefs} !Int !u:{# FunDef} !*{#DclModule} !*TypeVarHeap !*TypeDefInfos !*ErrorAdmin
-> (!u:{# FunDef}, !*{#DclModule}, !*TypeVarHeap, !*TypeDefInfos, !*ErrorAdmin)
checkKindCorrectness main_dcl_module_n first_uncached_function icl_instances common_defs n_cached_dcl_modules fun_defs dcl_mods th_vars td_infos error_admin
#! n_fun_defs = size fun_defs
size_dcl_mods = size dcl_mods
# (dcl_mods, th_vars, td_infos, error_admin)
= iFoldSt (\mod_index state
-> if (mod_index<n_cached_dcl_modules)
state
(check_classes mod_index state))
0 size_dcl_mods (dcl_mods, th_vars, td_infos, error_admin)
icl_common_defs
= common_defs.[main_dcl_module_n]
(_, th_vars, td_infos, error_admin)
= foldrArraySt (check_class icl_common_defs.com_member_defs)
icl_common_defs.com_class_defs
([], th_vars, td_infos, error_admin)
bv_uninitialized_mods = bitvectSetFirstN n_cached_dcl_modules (bitvectCreate size_dcl_mods)
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
= iFoldSt (\mod_index state
-> if (mod_index<n_cached_dcl_modules)
state
(check_instances_and_class_and_member_contexts
common_defs common_defs.[mod_index] state))
0 size_dcl_mods (bv_uninitialized_mods, th_vars, td_infos, error_admin)
// check_icl_function: don't check the types that were generated for instances
state
= iFoldSt (check_icl_function common_defs) first_uncached_function /* 0 */ icl_instances.ir_from
(fun_defs, bv_uninitialized_mods, th_vars, td_infos, error_admin)
(fun_defs, bv_uninitialized_mods, th_vars, td_infos, error_admin)
= iFoldSt (check_icl_function common_defs) icl_instances.ir_to n_fun_defs state
(dcl_mods, bv_uninitialized_mods, th_vars, td_infos, error_admin)
= iFoldSt (\mod_index state
-> if (mod_index<n_cached_dcl_modules || mod_index==main_dcl_module_n)
state
(check_dcl_functions common_defs mod_index state))
0 size_dcl_mods
(dcl_mods, bv_uninitialized_mods, th_vars, td_infos, error_admin)
= (fun_defs, dcl_mods, th_vars, td_infos, error_admin)
where
check_classes mod_index (dcl_mods, th_vars, td_infos, error_admin)
# (dcl_mod, dcl_mods)
= dcl_mods![mod_index]
{com_class_defs, com_member_defs}
= dcl_mod.dcl_common
(class_defs_with_cacheable_kind_info, th_vars, td_infos, error_admin)
= foldrArraySt (check_class com_member_defs) com_class_defs
([], th_vars, td_infos, error_admin)
dcl_mods
= { dcl_mods & [mod_index].dcl_common.com_class_defs
= { el \\ el <- class_defs_with_cacheable_kind_info }}
= (dcl_mods, th_vars, td_infos, error_admin)
check_class com_member_defs class_def=:{class_name, class_args, class_members}
(class_defs_accu, th_vars, td_infos, error_admin)
# th_vars
= init_type_vars class_args th_vars
(th_vars, td_infos, error_admin)
= foldlArraySt (\{ds_index} state
-> check_member_without_context class_args
com_member_defs.[ds_index] state)
class_members (th_vars, td_infos, error_admin)
(derived_kinds, th_vars)
= mapFilterYesSt get_opt_kind class_args th_vars
= ([{ class_def & class_arg_kinds = derived_kinds }:class_defs_accu], th_vars, td_infos, error_admin)
check_member_without_context class_args
{me_symb, me_pos, me_class_vars, me_type=me_type=:{st_vars, st_args, st_result}}
(th_vars, td_infos, error_admin)
# error_admin
= setErrorAdmin (newPosition me_symb me_pos) error_admin
th_vars
= init_type_vars st_vars th_vars
th_vars
= fold2St copy_TVI class_args me_class_vars th_vars
(th_vars, td_infos, error_admin)
= unsafeFold2St (check_atype KindConst)
[0..] [st_result:st_args] (th_vars, td_infos, error_admin)
th_vars
= fold2St copy_TVI me_class_vars class_args th_vars
= (th_vars, td_infos, error_admin)
where
copy_TVI src dst th_vars
# (tvi, th_vars)
= readPtr src.tv_info_ptr th_vars
= writePtr dst.tv_info_ptr tvi th_vars
check_instances_and_class_and_member_contexts common_defs
{com_instance_defs, com_class_defs, com_member_defs} state
# state
= foldlArraySt (check_instance common_defs) com_instance_defs state
state
= foldlArraySt
(check_class_context_and_member_contexts common_defs com_member_defs)
com_class_defs state
= state
check_instance common_defs {ins_is_generic, ins_class, ins_ident, ins_pos, ins_type}
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
| ins_is_generic
// kind correctness of user supplied generic instances
// is checked during generic phase
= (bv_uninitialized_mods, th_vars, td_infos, error_admin)
# (expected_kinds, bv_uninitialized_mods, th_vars)
= get_expected_kinds ins_class common_defs bv_uninitialized_mods th_vars
error_admin
= setErrorAdmin (newPosition ins_ident ins_pos) error_admin
th_vars
= init_type_vars ins_type.it_vars th_vars
(th_vars, td_infos, error_admin)
= unsafeFold3St possibly_check_type expected_kinds [1..]
ins_type.it_types (th_vars, td_infos, error_admin)
state
= foldSt (check_context common_defs) ins_type.it_context
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
= state
get_expected_kinds class_index=:{glob_module, glob_object} common_defs bv_uninitialized_mods th_vars
| bitvectSelect glob_module bv_uninitialized_mods
// ---> ("get_expected_kinds", glob_module)
/* the desired class is defined in a module which is a cached one
=> check_classes has not been called for all the classes
within that module
=> the kind information for the class args is not in the heap
=> put it in the heap now
*/
# th_vars
= foldlArraySt write_kind_info common_defs.[glob_module].com_class_defs th_vars
= get_expected_kinds class_index common_defs (bitvectReset glob_module bv_uninitialized_mods)
th_vars
# {class_args, class_arg_kinds}
= common_defs.[glob_module].com_class_defs.[glob_object.ds_index]
(expected_kinds, th_vars)
= mapSt get_tvi class_args th_vars
= (expected_kinds, bv_uninitialized_mods, th_vars)
write_kind_info {class_name, class_args, class_arg_kinds} th_vars
= write_ki class_args class_arg_kinds th_vars
write_ki [{tv_info_ptr}:class_args] [class_arg_kind:class_arg_kinds] th_vars
= write_ki class_args class_arg_kinds (writePtr tv_info_ptr (TVI_Kind class_arg_kind) th_vars)
write_ki [{tv_info_ptr}:class_args] [] th_vars
= write_ki class_args [] (writePtr tv_info_ptr TVI_Empty th_vars)
write_ki [] [] th_vars
= th_vars
possibly_check_type TVI_Empty _ _ state
// This can happen for stooopid classes like StdClass::Ord, where the member type is ignored at all
= state
possibly_check_type (TVI_Kind expected_kind) arg_nr type state
= check_type expected_kind arg_nr type state
check_class_context_and_member_contexts common_defs com_member_defs
{class_name, class_pos, class_context, class_members, class_args}
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
# error_admin
= setErrorAdmin (newPosition class_name class_pos) error_admin
state
= foldSt (check_context common_defs) class_context
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
state
= foldlArraySt (check_member_context common_defs com_member_defs)
class_members state
= state
check_member_context common_defs com_member_defs {ds_index}
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
# {me_symb, me_pos, me_type}
= com_member_defs.[ds_index]
error_admin
= setErrorAdmin (newPosition me_symb me_pos) error_admin
= foldSt (check_context common_defs) me_type.st_context
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
get_tvi {tv_info_ptr} th_vars
= readPtr tv_info_ptr th_vars
get_opt_kind {tv_info_ptr} th_vars
# (tvi, th_vars)
= readPtr tv_info_ptr th_vars
#! opt_kind
= case tvi of
TVI_Kind kind -> Yes kind
_ -> No
= (opt_kind, th_vars)
check_icl_function common_defs fun_n
(fun_defs, bv_uninitialized_mods, th_vars, td_infos, error_admin)
# (fun_def, fun_defs) = fun_defs![fun_n]
= case fun_def.fun_type of
No
-> (fun_defs, bv_uninitialized_mods, th_vars, td_infos, error_admin)
Yes st
# (bv_uninitialized_mods, th_vars, td_infos, error_admin)
= check_symbol_type common_defs fun_def.fun_symb fun_def.fun_pos
st (bv_uninitialized_mods, th_vars, td_infos, error_admin)
-> (fun_defs, bv_uninitialized_mods, th_vars, td_infos, error_admin)
check_dcl_functions common_defs mod_index
(dcl_mods, bv_uninitialized_mods, th_vars, td_infos, error_admin)
# ({dcl_functions, dcl_instances, dcl_macros}, dcl_mods)
= dcl_mods![mod_index]
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
= iFoldSt (\i state
-> if (in_index_range i dcl_instances || in_index_range i dcl_macros) // yawn
state
(let ({ft_symb, ft_pos, ft_type}) = dcl_functions.[i]
in check_symbol_type common_defs ft_symb ft_pos ft_type
state))
0 (size dcl_functions) (bv_uninitialized_mods, th_vars, td_infos, error_admin)
= (dcl_mods, bv_uninitialized_mods, th_vars, td_infos, error_admin)
check_symbol_type common_defs fun_symb fun_pos
st=:{st_vars, st_args, st_result, st_context}
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
# error_admin
= setErrorAdmin (newPosition fun_symb fun_pos) error_admin
th_vars
= init_type_vars st_vars th_vars
(th_vars, td_infos, error_admin)
= unsafeFold2St (check_atype KindConst)
[0..] [st_result:st_args] (th_vars, td_infos, error_admin)
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
= foldSt (check_context common_defs) st_context
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
= (bv_uninitialized_mods, th_vars, td_infos, error_admin)
check_atype expected_kind arg_nr {at_type} state
= check_type expected_kind arg_nr at_type state
check_type expected_kind arg_nr (TA {type_name,type_index} args)
(th_vars, td_infos, error_admin)
# ({tdi_kinds}, td_infos)
= td_infos![type_index.glob_module,type_index.glob_object]
(th_vars, td_infos, error_admin)
= unsafeFold2St (flip check_atype arg_nr) tdi_kinds args
(th_vars, td_infos, error_admin)
n_args
= length args
kind_of_application
= if (n_args==length tdi_kinds)
KindConst
(KindArrow (drop n_args tdi_kinds))
error_admin
= check_equality_of_kinds arg_nr expected_kind kind_of_application error_admin
= (th_vars, td_infos, error_admin)
check_type expected_kind _ (TV tv) (th_vars, td_infos, error_admin)
# (th_vars, error_admin)
= unify_var_kinds expected_kind tv th_vars error_admin
= (th_vars, td_infos, error_admin)
check_type expected_kind _ (GTV tv) (th_vars, td_infos, error_admin)
# (th_vars, error_admin)
= unify_var_kinds expected_kind tv th_vars error_admin
= (th_vars, td_infos, error_admin)
check_type expected_kind arg_nr (l --> r) state
# state
= check_atype KindConst arg_nr l state
(th_vars, td_infos, error_admin)
= check_atype KindConst arg_nr r state
error_admin
= check_equality_of_kinds arg_nr expected_kind KindConst error_admin
= (th_vars, td_infos, error_admin)
//AA..
check_type expected_kind arg_nr TArrow (th_vars, td_infos, error_admin)
# error_admin
= check_equality_of_kinds arg_nr expected_kind (KindArrow [KindConst,KindConst]) error_admin
= (th_vars, td_infos, error_admin)
check_type expected_kind arg_nr (TArrow1 arg) state
# (th_vars, td_infos, error_admin) = check_atype KindConst arg_nr arg state
# error_admin
= check_equality_of_kinds arg_nr expected_kind (KindArrow [KindConst]) error_admin
= (th_vars, td_infos, error_admin)
//..AA
check_type expected_kind arg_nr ((CV tv) :@: args) state
# (th_vars, td_infos, error_admin)
= foldSt (check_atype KindConst arg_nr) args state
expected_kind_of_cons_var
= KindArrow (repeatn (length args) KindConst)
(th_vars, error_admin)
= unify_var_kinds expected_kind_of_cons_var tv th_vars error_admin
error_admin
= check_equality_of_kinds arg_nr expected_kind KindConst error_admin
= (th_vars, td_infos, error_admin)
check_type expected_kind arg_nr (TB _) (th_vars, td_infos, error_admin)
# error_admin
= check_equality_of_kinds arg_nr expected_kind KindConst error_admin
= (th_vars, td_infos, error_admin)
// Sjaak ... 170801
check_type expected_kind arg_nr (TFA vars type) (th_vars, td_infos, error_admin)
# th_vars = init_type_vars [ atv_variable \\ {atv_variable} <- vars ] th_vars
= check_type expected_kind arg_nr type (th_vars, td_infos, error_admin)
// ... Sjaak 170801
check_context common_defs {tc_class, tc_types}
(bv_uninitialized_mods, th_vars, td_infos, error_admin)
# (expected_kinds, bv_uninitialized_mods, th_vars)
= get_expected_kinds tc_class common_defs bv_uninitialized_mods th_vars
(th_vars, td_infos, error_admin)
= unsafeFold3St possibly_check_type expected_kinds (descending (-1))
tc_types (th_vars, td_infos, error_admin)
= (bv_uninitialized_mods, th_vars, td_infos, error_admin)
where
descending i = [i:descending (i-1)]
init_type_vars vars tv_heap
= foldSt init_type_var vars tv_heap
where
init_type_var {tv_info_ptr} tv_heap
= tv_heap <:= (tv_info_ptr, TVI_Empty)
unify_var_kinds expected_kind tv=:{tv_name, tv_info_ptr} th_vars error_admin
# (tvi, th_vars)
= readPtr tv_info_ptr th_vars
= case tvi of
TVI_Empty
-> (writePtr tv_info_ptr (TVI_Kind expected_kind) th_vars, error_admin)
TVI_Kind kind
| expected_kind==kind
-> (th_vars, error_admin)
-> (th_vars, checkError "cannot consistently assign a kind to type variable"
tv_name.id_name error_admin)
check_equality_of_kinds arg_nr expected_kind kind error_admin
| expected_kind==kind
= error_admin
= checkError "inconsistent kind in" (arg_nr_to_string arg_nr) error_admin
arg_nr_to_string 0 = "result type"
arg_nr_to_string i
| i >0
= "type of argument nr "+++toString i
= "type context nr "+++toString (~i)
in_index_range test ir :== test>=ir.ir_from && test < ir.ir_to
