diff options
Diffstat (limited to 'frontend')
| -rw-r--r-- | frontend/trans.icl | 90 |
1 files changed, 57 insertions, 33 deletions
diff --git a/frontend/trans.icl b/frontend/trans.icl index 3a0550e..4ebf56b 100644 --- a/frontend/trans.icl +++ b/frontend/trans.icl @@ -437,10 +437,9 @@ transCase is_active opt_aci this_case=:{case_expr = case_expr=:(App app=:{app_sy SK_Constructor cons_index | not is_active -> skip_over this_case ro ti // XXX currently only active cases are matched at runtime (multimatch problem) - # algebraicPatterns = getAlgebraicPatterns case_guards - aci = case opt_aci of + # aci = case opt_aci of Yes aci -> aci - (may_be_match_expr, ti) = match_and_instantiate aci.aci_linearity_of_patterns cons_index app_args algebraicPatterns case_default ro ti + (may_be_match_expr, ti) = match_and_instantiate aci.aci_linearity_of_patterns cons_index app_args case_guards case_default ro ti -> case may_be_match_expr of Yes match_expr -> (match_expr, ti) @@ -533,36 +532,61 @@ where = [h_act_pars:replacement producer_vars t_act_pars form_pars] = replacement producer_vars t_act_pars form_pars - getAlgebraicPatterns (AlgebraicPatterns _ algebraicPatterns) - = algebraicPatterns - getAlgebraicPatterns (OverloadedListPatterns _ _ algebraicPatterns) - = algebraicPatterns - - match_and_instantiate [linearity:linearities] cons_index app_args - [{ap_symbol={glob_module,glob_object={ds_index}}, ap_vars, ap_expr} : guards] - case_default ro ti - | cons_index.glob_module == glob_module && cons_index.glob_object == ds_index - # zipped = zip2 ap_vars app_args - {cons_type} = ro.ro_common_defs.[glob_module].com_cons_defs.[ds_index] - unfoldables = [ ((not (arg_is_strict i cons_type.st_args_strictness)) && linear) || in_normal_form app_arg \\ linear <- linearity & app_arg <- app_args & i <- [0..]] - unfoldable_args = filterWith unfoldables zipped - not_unfoldable = map not unfoldables - non_unfoldable_args = filterWith not_unfoldable zipped - ti_var_heap = foldSt (\({fv_info_ptr}, arg) -> writeVarInfo fv_info_ptr (VI_Expression arg)) unfoldable_args ti.ti_var_heap - (new_expr, ti_symbol_heap) = possibly_add_let non_unfoldable_args ap_expr not_unfoldable cons_type ro ti.ti_symbol_heap - unfold_state = { us_var_heap = ti_var_heap, us_symbol_heap = ti_symbol_heap, us_opt_type_heaps = No,us_cleanup_info=ti.ti_cleanup_info, - us_local_macro_functions = No } - ui= {ui_handle_aci_free_vars = LeaveThem } - (unfolded_expr, unfold_state) = unfold new_expr ui unfold_state - (final_expr, ti) = transform unfolded_expr - { ro & ro_root_case_mode = NotRootCase } - { ti & ti_var_heap = unfold_state.us_var_heap, ti_symbol_heap = unfold_state.us_symbol_heap,ti_cleanup_info=unfold_state.us_cleanup_info } - = (Yes final_expr, ti) - = match_and_instantiate linearities cons_index app_args guards case_default ro ti - match_and_instantiate [linearity:linearities] cons_index app_args [guard : guards] case_default ro ti - = match_and_instantiate linearities cons_index app_args guards case_default ro ti - match_and_instantiate _ cons_index app_args [] default_expr ro ti - = transform default_expr { ro & ro_root_case_mode = NotRootCase } ti + match_and_instantiate linearities cons_index app_args (AlgebraicPatterns _ algebraicPatterns) case_default ro ti + = match_and_instantiate_algebraic_type linearities cons_index app_args algebraicPatterns case_default ro ti + where + match_and_instantiate_algebraic_type [linearity:linearities] cons_index app_args + [{ap_symbol={glob_module,glob_object={ds_index}}, ap_vars, ap_expr} : guards] + case_default ro ti + | cons_index.glob_module == glob_module && cons_index.glob_object == ds_index + # {cons_type} = ro.ro_common_defs.[glob_module].com_cons_defs.[ds_index] + = instantiate linearity app_args ap_vars ap_expr cons_type ti + = match_and_instantiate_algebraic_type linearities cons_index app_args guards case_default ro ti + match_and_instantiate_algebraic_type [linearity:linearities] cons_index app_args [guard : guards] case_default ro ti + = match_and_instantiate_algebraic_type linearities cons_index app_args guards case_default ro ti + match_and_instantiate_algebraic_type _ cons_index app_args [] case_default ro ti + = transform case_default { ro & ro_root_case_mode = NotRootCase } ti + match_and_instantiate linearities cons_index app_args (OverloadedListPatterns (OverloadedList _ _ _ _) _ algebraicPatterns) case_default ro ti + = match_and_instantiate_overloaded_list linearities cons_index app_args algebraicPatterns case_default ro ti + where + match_and_instantiate_overloaded_list [linearity:linearities] cons_index app_args + [{ap_symbol={glob_module,glob_object={ds_index}}, ap_vars, ap_expr} : guards] + case_default ro ti + | equal_list_contructor glob_module ds_index cons_index + # {cons_type} = ro.ro_common_defs.[glob_module].com_cons_defs.[ds_index] + = instantiate linearity app_args ap_vars ap_expr cons_type ti + = match_and_instantiate_overloaded_list linearities cons_index app_args guards case_default ro ti + where + equal_list_contructor glob_module ds_index {glob_module=cons_glob_module,glob_object=cons_ds_index} + | glob_module==cPredefinedModuleIndex && cons_glob_module==cPredefinedModuleIndex + # index=ds_index+FirstConstructorPredefinedSymbolIndex + # cons_index=cons_ds_index+FirstConstructorPredefinedSymbolIndex + | index==PD_OverloadedConsSymbol + = cons_index==PD_ConsSymbol || cons_index==PD_StrictConsSymbol || cons_index==PD_TailStrictConsSymbol || cons_index==PD_StrictTailStrictConsSymbol; + | index==PD_OverloadedNilSymbol + = cons_index==PD_NilSymbol || cons_index==PD_StrictNilSymbol || cons_index==PD_TailStrictNilSymbol || cons_index==PD_StrictTailStrictNilSymbol; + = abort "equal_list_contructor" + match_and_instantiate_overloaded_list [linearity:linearities] cons_index app_args [guard : guards] case_default ro ti + = match_and_instantiate_overloaded_list linearities cons_index app_args guards case_default ro ti + match_and_instantiate_overloaded_list _ cons_index app_args [] case_default ro ti + = transform case_default { ro & ro_root_case_mode = NotRootCase } ti + + instantiate linearity app_args ap_vars ap_expr cons_type ti + # zipped = zip2 ap_vars app_args + unfoldables = [ ((not (arg_is_strict i cons_type.st_args_strictness)) && linear) || in_normal_form app_arg \\ linear <- linearity & app_arg <- app_args & i <- [0..]] + unfoldable_args = filterWith unfoldables zipped + not_unfoldable = map not unfoldables + non_unfoldable_args = filterWith not_unfoldable zipped + ti_var_heap = foldSt (\({fv_info_ptr}, arg) -> writeVarInfo fv_info_ptr (VI_Expression arg)) unfoldable_args ti.ti_var_heap + (new_expr, ti_symbol_heap) = possibly_add_let non_unfoldable_args ap_expr not_unfoldable cons_type ro ti.ti_symbol_heap + unfold_state = { us_var_heap = ti_var_heap, us_symbol_heap = ti_symbol_heap, us_opt_type_heaps = No,us_cleanup_info=ti.ti_cleanup_info, + us_local_macro_functions = No } + ui= {ui_handle_aci_free_vars = LeaveThem } + (unfolded_expr, unfold_state) = unfold new_expr ui unfold_state + (final_expr, ti) = transform unfolded_expr + { ro & ro_root_case_mode = NotRootCase } + { ti & ti_var_heap = unfold_state.us_var_heap, ti_symbol_heap = unfold_state.us_symbol_heap,ti_cleanup_info=unfold_state.us_cleanup_info } + = (Yes final_expr, ti) transCase is_active opt_aci this_case=:{case_expr = (BasicExpr basic_value),case_guards,case_default} ro ti | not is_active |