Commit dfb45b08 authored by Martin Wierich's avatar Martin Wierich
Browse files

new phase between analTypeDefs and typing

parent b2b4ec3d
definition module checkKindCorrectness
import syntax, checksupport, containers
checkKindCorrectness :: !NumberSet !Index IndexRange !{#CommonDefs} !{#DclModule} !u:{# FunDef} !*TypeVarHeap !*TypeDefInfos !*ErrorAdmin
-> (!u:{# FunDef}, !*TypeVarHeap, !*TypeDefInfos, !*ErrorAdmin)
implementation module checkKindCorrectness
import StdEnv
import syntax, containers, checksupport, utilities, RWSDebug
checkKindCorrectness :: !NumberSet !Index IndexRange !{#CommonDefs} !{#DclModule} !u:{# FunDef} !*TypeVarHeap !*TypeDefInfos !*ErrorAdmin
-> (!u:{# FunDef}, !*TypeVarHeap, !*TypeDefInfos, !*ErrorAdmin)
checkKindCorrectness icl_used_module_numbers main_dcl_module_n icl_instances common_defs dcl_mods
fun_defs th_vars td_infos error_admin
#! n_fun_defs = size fun_defs
# (th_vars, td_infos, error_admin)
= iFoldSt (\mod_index state
-> if (inNumberSet mod_index icl_used_module_numbers)
(check_kind_correctness_of_classes common_defs common_defs.[mod_index] state)
state)
0 (size dcl_mods) (th_vars, td_infos, error_admin)
th_vars = th_vars
(th_vars, td_infos, error_admin)
= iFoldSt (\mod_index state
-> if (inNumberSet mod_index icl_used_module_numbers)
(check_kind_correctness_of_instances_and_class_and_member_contexts
common_defs common_defs.[mod_index] state)
state)
0 (size dcl_mods) (th_vars, td_infos, error_admin)
// check_kind_correctness_of_icl_function: don't check the types that were generated for instances
th_vars = th_vars
state
= iFoldSt check_kind_correctness_of_icl_function 0 icl_instances.ir_from
(fun_defs, th_vars, td_infos, error_admin)
(fun_defs, th_vars, td_infos, error_admin)
= iFoldSt check_kind_correctness_of_icl_function icl_instances.ir_to n_fun_defs state
th_vars = th_vars
(th_vars, td_infos, error_admin)
= iFoldSt (\mod_index state
-> if (inNumberSet mod_index icl_used_module_numbers && mod_index<>main_dcl_module_n)
(check_kind_correctness_of_dcl_functions common_defs dcl_mods.[mod_index]
state)
state)
0 (size dcl_mods)
(th_vars, td_infos, error_admin)
th_vars = th_vars
= (fun_defs, th_vars, td_infos, error_admin)
where
check_kind_correctness_of_classes common_defs {com_class_defs, com_member_defs} state
= foldlArraySt (check_kind_correctness_of_class common_defs com_member_defs) com_class_defs state
check_kind_correctness_of_class common_defs com_member_defs {class_name, class_args, class_members}
(th_vars, td_infos, error_admin)
# th_vars
= foldSt init_type_var class_args th_vars
= foldlArraySt (\{ds_index} state
-> check_kind_correctness_of_member_without_context common_defs class_args
com_member_defs.[ds_index] state)
class_members (th_vars, td_infos, error_admin)
check_kind_correctness_of_member_without_context common_defs 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
= foldSt init_type_var st_vars th_vars
th_vars
= fold2St copy_TVI class_args me_class_vars th_vars
(th_vars, td_infos, error_admin)
= unsafeFold2St (check_kind_correctness_of_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_kind_correctness_of_instances_and_class_and_member_contexts common_defs
{com_instance_defs, com_class_defs, com_member_defs} state
# state
= foldlArraySt (check_kind_correctness_of_instance common_defs) com_instance_defs state
state
= foldlArraySt
(check_kind_correctness_of_class_context_and_member_contexts common_defs com_member_defs)
com_class_defs state
= state
check_kind_correctness_of_instance common_defs {ins_class, ins_ident, ins_pos, ins_type}
(th_vars, td_infos, error_admin)
# {class_args}
= common_defs.[ins_class.glob_module].com_class_defs.[ins_class.glob_object.ds_index]
(expected_kinds, th_vars)
= mapSt get_tvi class_args th_vars
error_admin
= setErrorAdmin (newPosition ins_ident ins_pos) error_admin
th_vars
= foldSt init_type_var ins_type.it_vars th_vars
state
= unsafeFold3St possibly_check_kind_correctness_of_type expected_kinds [1..]
ins_type.it_types (th_vars, td_infos, error_admin)
state
= foldSt (check_kind_correctness_of_context common_defs) ins_type.it_context state
= state
possibly_check_kind_correctness_of_type TVI_Empty _ _ state
// This can happen for stooopid classes like StdClass::Ord, where the member type is ignored at all
= state
possibly_check_kind_correctness_of_type (TVI_Kind expected_kind) arg_nr type state
= check_kind_correctness_of_type expected_kind arg_nr type state
check_kind_correctness_of_class_context_and_member_contexts common_defs com_member_defs
{class_name, class_pos, class_context, class_members} (th_vars, td_infos, error_admin)
# error_admin
= setErrorAdmin (newPosition class_name class_pos) error_admin
state
= foldSt (check_kind_correctness_of_context common_defs) class_context
(th_vars, td_infos, error_admin)
state
= foldlArraySt (check_kind_correctness_of_member_context common_defs com_member_defs)
class_members state
= state
check_kind_correctness_of_member_context common_defs com_member_defs {ds_index}
(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_kind_correctness_of_context common_defs) me_type.st_context
(th_vars, td_infos, error_admin)
get_tvi {tv_info_ptr} th_vars
= readPtr tv_info_ptr th_vars
check_kind_correctness_of_icl_function fun_n (fun_defs, th_vars, td_infos, error_admin)
# (fun_def, fun_defs) = fun_defs![fun_n]
= case fun_def.fun_type of
No
-> (fun_defs, th_vars, td_infos, error_admin)
Yes st
# (th_vars, td_infos, error_admin)
= check_kind_correctness_of_symbol_type common_defs fun_def.fun_symb fun_def.fun_pos
st (th_vars, td_infos, error_admin)
-> (fun_defs, th_vars, td_infos, error_admin)
check_kind_correctness_of_dcl_functions common_defs {dcl_functions, dcl_instances, dcl_macros} state
= 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_kind_correctness_of_symbol_type common_defs ft_symb ft_pos ft_type
state))
0 (size dcl_functions) state
check_kind_correctness_of_symbol_type common_defs fun_symb fun_pos
st=:{st_vars, st_args, st_result, st_context} (th_vars, td_infos, error_admin)
# error_admin
= setErrorAdmin (newPosition fun_symb fun_pos) error_admin
th_vars
= foldSt init_type_var st_vars th_vars
(th_vars, td_infos, error_admin)
= unsafeFold2St (check_kind_correctness_of_atype KindConst)
[0..] [st_result:st_args] (th_vars, td_infos, error_admin)
(th_vars, td_infos, error_admin)
= foldSt (check_kind_correctness_of_context common_defs) st_context (th_vars, td_infos, error_admin)
= (th_vars, td_infos, error_admin)
check_kind_correctness_of_atype expected_kind arg_nr {at_type} state
= check_kind_correctness_of_type expected_kind arg_nr at_type state
check_kind_correctness_of_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_kind_correctness_of_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_kind_correctness_of_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_kind_correctness_of_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_kind_correctness_of_type expected_kind arg_nr (l --> r) state
# state
= check_kind_correctness_of_atype KindConst arg_nr l state
(th_vars, td_infos, error_admin)
= check_kind_correctness_of_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)
check_kind_correctness_of_type expected_kind arg_nr ((CV tv) :@: args) state
# (th_vars, td_infos, error_admin)
= foldSt (check_kind_correctness_of_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_kind_correctness_of_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)
check_kind_correctness_of_context common_defs {tc_class, tc_types} (th_vars, td_infos, error_admin)
# {class_args}
= common_defs.[tc_class.glob_module].com_class_defs.[tc_class.glob_object.ds_index]
(expected_kinds, th_vars)
= mapSt get_tvi class_args th_vars
state
= unsafeFold3St possibly_check_kind_correctness_of_type expected_kinds (descending (-1))
tc_types (th_vars, td_infos, error_admin)
= state
where
descending i = [i:descending (i-1)]
init_type_var {tv_info_ptr} th_vars
= writePtr tv_info_ptr TVI_Empty th_vars
unify_var_kinds expected_kind {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
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