Class: MilkTea::Lowerer

Inherits:
Object
  • Object
show all
Includes:
Intrinsics, MilkTea::Lowering::Async, MilkTea::Lowering::Block, MilkTea::Lowering::Calls, MilkTea::Lowering::Declarations, MilkTea::Lowering::Dyn, MilkTea::Lowering::Events, MilkTea::Lowering::Expressions, MilkTea::Lowering::ForeignCstr, MilkTea::Lowering::Functions, MilkTea::Lowering::Loops, MilkTea::Lowering::Proc, MilkTea::Lowering::Resolve, MilkTea::Lowering::Scans, MilkTea::Lowering::StrBuffer, MilkTea::Lowering::Utils
Defined in:
lib/milk_tea/core/lowering.rb,
lib/milk_tea/core/lowering/artifacts.rb,
lib/milk_tea/core/lowering/lowering_context.rb

Defined Under Namespace

Classes: Artifacts, LoweringContext

Constant Summary

Constants included from MilkTea::Lowering::Resolve

MilkTea::Lowering::Resolve::COMPILE_TIME_BUILTINS, MilkTea::Lowering::Resolve::PASS_THROUGH_BUILTINS

Constants included from Intrinsics

Intrinsics::ATOMIC_METHOD_KINDS, Intrinsics::BUILTIN_CSTR, Intrinsics::EVENT_METHOD_KINDS, Intrinsics::EVENT_METHOD_NAMES, Intrinsics::SIMD_METHOD_KINDS, Intrinsics::SPECIALIZED_RECEIVERS, Intrinsics::STR_BUFFER_METHOD_KINDS, Intrinsics::STR_BUFFER_METHOD_NAMES

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from MilkTea::Lowering::Utils

#addressable_storage_expression?, #array_element_type, #array_length, #array_to_span_compatible?, #array_type?, #bind_let_else_local?, #c_local_name, #c_reserved_identifier?, #c_type_name, #callable_type?, #cfg_block_always_terminates?, #char_array_text_type?, #cleanup_safe_return_expression?, #cleanup_statements, #collection_loop_binding_type, #collection_loop_item_value, #collection_loop_ref_element_type?, #collection_loop_stop_value, #collection_loop_type, #compile_time_builtin_function_type, #compile_time_builtin_specialization_function_type, #conditional_common_type, #conditional_null_common_type, #contains_label_target?, #contains_proc_storage_type?, #contains_task_type?, #contains_type_var?, #cstr_list_trackable_type?, #cstr_trackable_type?, #current_actual_scope, #duplicate_env, #empty_env, #enum_member_c_name, #env_with_refinements, #external_function_c_name, #flow_refinements, #forward_declarable_external_opaque?, #fresh_c_temp_name, #fresh_proc_symbol, #function_binding_c_name, #generic_integer_type_argument?, #generic_type_argument_suffix, #if_expression_branch_compatible?, #imported_value_c_name, #infer_field_receiver_type, #infer_index_result_type, #infer_method_receiver_type, #infer_option_propagation_details, #infer_range_loop_type, #infer_result_propagation_details, #infer_result_propagation_type, #infer_result_propagation_types, #infer_value_type, #integer_type?, #integer_type_argument?, #let_else_binding_projection, #let_else_discards_binding?, #let_else_error_type, #let_else_failure_condition, #let_else_storage_c_name, #let_else_success_type, #local_binding, #lookup_value, #loop_exit_break, #loop_exit_continue, #loop_exit_label, #loop_exit_statement, #loop_flow, #lower_assignment_binding_target, #lower_assignment_target, #lower_bound_identifier, #lower_compile_time_literal, #lower_defer_cleanup_body, #lower_fatal_statement, #lower_loop_exit, #lower_range_match_condition, #lower_static_storage_initializer, #merge_refinements, #module_c_prefix, #module_function_c_name, #module_value_c_name, #nested_loop_flow, #null_test_refinements, #null_type, #nullable_candidate?, #nullable_some_literal, #opaque_c_type_name, #opaque_forward_declarable?, #option_let_else_type?, #pointer_like_type?, #pointer_to, #proc_env_pointer_type, #proc_invoke_function_type, #proc_release_function_type, #proc_retain_function_type, #range_end_of, #range_iterable?, #range_start_of, #read_call?, #reject_format_releases_for_assignment, #result_let_else_type?, #rewrite_static_storage_initializer, #sanitize_identifier, #scopes_with_refinements, #simd_type?, #snapshot_env, #static_storage_imported_analysis, #stored_ref_supported_type?, #str_buffer_capacity, #str_buffer_storage_capacity, #str_buffer_to_span_compatible?, #str_buffer_type?, #struct_contains_string_field?, #switch_loop_flow, #switch_loop_target, #terminating_ir_statement?, #validate_generic_type!, #value_c_name, #variant_binding_projection_expression, #variant_match_arm_name_from_pattern, #wildcard_arm_pattern?, #with_analysis_context, #wrap_nullable_field_value

Methods included from MilkTea::Lowering::Dyn

#dyn_vtable_struct_type, #ensure_dyn_vtable, #ensure_dyn_vtable_struct, #generate_dyn_vtable_constant, #generate_dyn_vtable_wrappers, #lower_adapt_call, #lower_dyn_method_call

Methods included from MilkTea::Lowering::Resolve

#aggregate_arithmetic_result_type, #aggregate_scalar_result, #analysis_for_module, #attribute_binding_supports_target?, #attribute_target_kind, #binary_right_env, #binding_cstr_backed?, #binding_cstr_list_backed?, #build_direct_function_proc_invoke_function, #builtin_attribute_binding, #cast_expression, #collect_type_substitutions, #common_integer_type, #common_numeric_type, #compile_time_const_value, #compile_time_numeric_const_expression?, #const_declaration_for_module, #contextual_numeric_compatibility?, #copy_cstr_metadata!, #cstr_backed_expression?, #cstr_backed_storage_value?, #cstr_list_backed_expression?, #cstr_list_backed_storage_value?, #cstr_metadata_exit_envs_for_if_statement, #current_type_params, #direct_function_identity_expression?, #direct_function_to_proc_contextual_compatibility?, #each_non_raw_module_analysis, #each_raw_module_analysis, #evaluate_attribute_arg_call, #evaluate_attribute_of_call, #evaluate_attributes_of_call, #evaluate_callable_of_call, #evaluate_compile_time_call, #evaluate_const_function_body_lower, #evaluate_field_of_call, #evaluate_fields_of_call, #evaluate_has_attribute_call, #evaluate_members_of_call, #evaluate_reflection_target_argument, #evaluate_type_returning_call, #exact_compile_time_numeric_compatibility?, #external_numeric_assignment_target?, #extract_type_callee_info, #ffi_external_layout_root_type, #find_attribute_application, #find_struct_decl_by_name, #float_literal_expression?, #foreign_identity_projection_expression, #function_type_for_name, #harmonize_binary_float_literal_types, #harmonize_binary_integer_literal_types, #imports_for_module, #infer_binary_operand_types, #infer_expression_type, #infer_field_handle_member_type, #infer_function_type_arguments, #infer_member_handle_member_type, #infer_null_literal_type, #infer_receiver_type_substitutions, #instantiate_function_binding, #instantiate_function_binding_with_receiver, #integer_literal_expression?, #interface_implementation_key, #literal_type_argument_name_candidate?, #lower_array_to_span_expression, #lower_fn_to_proc_expression, #lower_str_buffer_to_span_expression, #merge_cstr_metadata_after_if_statement!, #method_analysis_key, #methods_receiver_type_argument_names!, #pointer_arithmetic_result_type, #pointer_lowered_method_receiver?, #pointer_lowered_sync_method_receiver?, #promoted_binary_operand_type, #propagating_expected_type, #receiver_type_uses_pointer_lowering?, #record_external_layout_assertion, #reflection_identifier_name, #reflection_positional_arguments?, #reflection_type_from_expression, #reinterpret_expression, #replace_binding_cstr_metadata!, #resolve_attribute_name_argument, #resolve_callable_handle_argument, #resolve_callee, #resolve_current_module_const_value, #resolve_default_specialization, #resolve_equal_specialization, #resolve_explicit_associated_binding, #resolve_explicit_default_binding, #resolve_explicit_equal_binding, #resolve_explicit_format_append_binding, #resolve_explicit_format_binding, #resolve_explicit_format_len_binding, #resolve_explicit_hash_binding, #resolve_explicit_instance_binding, #resolve_explicit_order_binding, #resolve_expression_callee, #resolve_field_handle_type_ref, #resolve_hash_specialization, #resolve_identifier_callee, #resolve_imported_module_const_value, #resolve_interface_ref, #resolve_member_access_callee, #resolve_named_generic_type, #resolve_named_generic_type_for_analysis, #resolve_named_literal_type_argument, #resolve_nested_type_ref, #resolve_order_specialization, #resolve_specialization_callee, #resolve_specialization_type_arguments, #resolve_specialized_callable_binding, #resolve_struct_handle_argument, #resolve_type_argument, #resolve_type_argument_ref, #resolve_type_expression, #resolve_type_member, #resolve_type_member_const_value, #resolve_type_ref, #resolve_type_ref_for_analysis, #resolved_attribute_applications_for_target, #same_attribute_binding?, #signed_type_above_width, #simulate_cstr_metadata_block, #specialize_function_binding, #struct_handle_for_type, #substitute_type, #substitute_value_binding, #trackable_binding_names, #try_resolve_type_ref, #type_contains_array_storage?, #type_implements_interface?, #types_for_module, #update_cstr_metadata_for_assignment!, #validate_function_type_param_constraints!, #validate_methods_receiver_type_arguments!, #value_param_declared_type, #value_param_literal, #value_param_substitution, #wider_float_type

Methods included from MilkTea::Lowering::StrBuffer

#lower_char_array_data_pointer, #lower_str_buffer_data_pointer, #lower_str_buffer_data_pointer_from_lowered, #lower_str_buffer_dirty_pointer, #lower_str_buffer_dirty_pointer_from_lowered, #lower_str_buffer_len_pointer, #lower_str_buffer_len_pointer_from_lowered, #str_buffer_args, #str_buffer_method_kind, #str_buffer_method_type

Methods included from MilkTea::Lowering::ForeignCstr

#inlineable_foreign_argument_expression?, #lower_contextual_expression, #lower_direct_cstr_list_argument, #lower_foreign_cstr_list_argument_value, #materialize_pointer_backed_value

Methods included from MilkTea::Lowering::Calls

#append_variadic_foreign_call_arguments, #atomic_method_kind, #automatic_foreign_cstr_list_temp_needed?, #automatic_foreign_cstr_temp_needed?, #automatic_variadic_foreign_cstr_temp_needed?, #bind_foreign_mapping_arguments, #consuming_foreign_call_refinements, #consuming_foreign_release_assignments, #consuming_foreign_release_bindings, #duplicable_foreign_argument_expression?, #expand_function_defaults, #foreign_argument_expression, #foreign_argument_needs_temporary_binding?, #foreign_call_consumes_binding?, #foreign_call_info, #foreign_function_binding?, #foreign_mapping_expression, #foreign_mapping_implicit_call?, #foreign_mapping_public_alias_name, #foreign_mapping_reference_counts, #foreign_mapping_uses_inline_replacement?, #foreign_slot_boundary_value_type, #implicit_ref_argument_bridge?, #inlineable_single_direct_call_names, #lower_addr_expression, #lower_atomic_method_call, #lower_call, #lower_call_arguments, #lower_event_subscribe_call, #lower_foreign_argument_value, #lower_foreign_call_components, #lower_foreign_call_inline, #lower_foreign_call_statement, #lower_foreign_char_pointer_buffer_argument_value, #lower_foreign_in_argument_value, #lower_foreign_pointer_argument_value, #lower_foreign_span_argument_value, #lower_hash_operation_argument, #lower_inline_foreign_mapping_call, #lower_inline_foreign_mapping_expression, #lower_inline_hash_operation_argument, #lower_method_receiver_argument, #lower_simd_lane_with, #lower_specialization, #lower_variadic_foreign_argument, #prepare_foreign_in_argument, #simd_method_kind, #substitute_foreign_mapping_expression, #task_expression_root_proc_bridge?, #temporary_foreign_cstr_expression?, #wrap_expression_in_ref_of, #wrap_task_expression_in_root_proc

Methods included from MilkTea::Lowering::Expressions

#build_dynamic_format_string_parts, #build_dynamic_format_string_temp_setup, #build_expression_from_qualified_name, #copy_explicit_format_sink_str_parts, #ensure_tuple_struct, #explicit_format_sink_append_call, #explicit_format_sink_call_info, #explicit_format_sink_runtime_call, #explicit_format_sink_target, #explicit_format_sink_target_buffer_view, #foreign_call_requires_statement_lowering?, #format_append_linkage_name, #format_length_linkage_name, #format_string_append_plan, #format_string_bin_append_plan, #format_string_custom_receiver_argument, #format_string_has_dynamic_parts?, #format_string_hex_append_plan, #format_string_oct_append_plan, #format_string_part_append_expression, #format_string_part_append_statements, #format_string_part_length_expression, #format_string_part_parameter_expression, #format_string_result_data_pointer, #format_string_static_text, #lower_aggregate_binary_operation, #lower_compile_time_handle_member, #lower_explicit_format_sink_expression_statement, #lower_expression, #lower_member_access, #lower_soa_indexed_field_access, #lower_vector_binary_operation, #lower_vector_binary_operation_on_vectors, #lower_vector_unary_operation, #materialize_prepared_expression, #member_c_name, #prepare_binary_expression_for_inline_lowering, #prepare_call_expression_for_inline_lowering, #prepare_expression_for_inline_lowering, #prepare_expression_with_cleanups, #prepare_format_string_expression_for_inline_lowering, #prepare_if_expression_for_inline_lowering, #prepare_match_expression_for_inline_lowering, #prepare_result_propagation_for_inline_lowering, #reachability_children, #register_prepared_temp!, #resolve_type_ref_with_fallback, #sanitize_type_name_for_tuple, #self_referencing_variant_field_access?, #sized_layout_ct_value?, #tuple_arm_condition, #tuple_type_name, #type_reaches_target?, #type_reaches_target_with_visited?

Methods included from MilkTea::Lowering::Loops

#collect_pfor_ir_names_expr, #collect_pfor_ir_names_stmt, #collect_pfor_local_decls, #collect_pfor_written_names, #collect_pfor_written_stmt, #iterator_loop_info, #lower_collection_for_stmt, #lower_detach_expr, #lower_for_stmt, #lower_gather_stmt, #lower_iterator_for_stmt, #lower_parallel_block_stmt, #lower_parallel_collection_for_stmt, #lower_range_for_stmt, #lower_range_index_assignment, #lower_threaded_for_stmt, #lower_while_stmt, #nullable_iterator_item_type?, #pfor_assignment_base_name, #rewrite_pfor_array_captures, #rewrite_pfor_expr, #rewrite_pfor_stmt, #validate_pfor_no_ref_captures!, #validate_pfor_write_conflicts!

Methods included from MilkTea::Lowering::Proc

#build_proc_invoke_function, #build_proc_noop_release_function, #build_proc_noop_retain_function, #build_proc_release_function, #build_proc_retain_function, #collect_proc_captures_from_expression, #collect_proc_captures_from_statement, #collect_proc_captures_from_statements, #expression_contains_proc_expr?, #lower_async_frame_proc_nullable_release_statements, #lower_proc_contained_lifecycle_statements, #lower_proc_contained_release_statements, #lower_proc_contained_retain_statements, #lower_proc_nullable_release_statements, #lower_proc_release_expression, #lower_proc_retain_expression, #lower_proc_selective_retain_statements, #proc_capture_binding, #proc_capture_entries

Methods included from MilkTea::Lowering::Block

#dereference_if_self_ref, #inline_loop_element_type, #lower_assignment_stmt, #lower_block, #lower_destructure_decl, #lower_emit_stmt, #lower_emitted_const, #lower_emitted_function, #lower_emitted_struct, #lower_expression_stmt, #lower_if_stmt, #lower_inline_for_stmt, #lower_inline_if_stmt, #lower_inline_match_stmt, #lower_inline_while_stmt, #lower_local_decl_stmt, #lower_match_stmt, #lower_proc_expression_for_local, #lower_range_match_stmt, #lower_return_stmt, #lower_string_match_stmt, #lower_tuple_match_stmt, #lower_unsafe_stmt, #lower_variant_struct_pattern_match, #lower_when_stmt, #variant_self_referencing_field?

Methods included from MilkTea::Lowering::Async

#analyze_async_function, #analyze_async_statements!, #ast_type_ref_for, #async_bind_local!, #async_collection_index_field_key, #async_collection_index_field_name, #async_collection_iterable_field_key, #async_collection_iterable_field_name, #async_complete_statements, #async_expression_contains_await?, #async_frame_cast_declaration, #async_frame_field_c_name, #async_frame_field_expression, #async_frame_local_name, #async_frame_raw_name, #async_local_decl_field_key, #async_local_decl_field_name, #async_local_decl_types, #async_main_runtime_callee_name, #async_match_binding_field_key, #async_match_binding_field_name, #async_resume_env_for, #async_return_context, #async_state_label, #async_task_call, #async_task_frame_expression, #async_variant_match_arm_binding, #bind_async_variant_match_arm_env!, #build_async_await_field_info, #build_async_cancel_function, #build_async_constructor_function, #build_async_frame_type, #build_async_main_entrypoint, #build_async_ready_function, #build_async_release_function, #build_async_resume_function, #build_async_set_waiter_function, #build_async_take_result_function, #build_async_while_with_condition_setup, #build_root_main_entrypoint, #build_root_main_entrypoint_bridge, #fresh_async_temp_name, #lower_async_assignment_statement, #lower_async_await_statement, #lower_async_body, #lower_async_cf_collection_for_stmt, #lower_async_cf_for_stmt, #lower_async_cf_if_stmt, #lower_async_cf_match_stmt, #lower_async_cf_parallel_collection_for_stmt, #lower_async_cf_range_for_stmt, #lower_async_cf_statements, #lower_async_cf_while_stmt, #lower_async_cleanup_entries, #lower_async_collection_for_stmt, #lower_async_defer_cleanup, #lower_async_expression_statement, #lower_async_for_stmt, #lower_async_local_decl_statement, #lower_async_loop_exit, #lower_async_non_await_statements, #lower_async_parallel_collection_for_stmt, #lower_async_range_for_stmt, #lower_async_return_statement, #lower_async_while_stmt, #lower_contained_task_release_statements, #lower_opt_task_value_release_statements, #lower_range_call, #normalize_async_assignment_target, #normalize_async_body, #normalize_async_expression, #normalize_async_if_branches, #normalize_async_if_statement, #normalize_async_statement, #normalize_async_statements, #reusable_async_await_task_field_name, #root_main_entrypoint_signature, #statements_contain_await?

Methods included from MilkTea::Lowering::Functions

#lower_async_function_decl, #lower_function_decl, #lower_functions, #resolve_extending_receiver_type, #resolve_value_type_params

Methods included from MilkTea::Lowering::Events

#active_event_slot_continue_guard, #array_of, #build_event_emit_function, #build_event_subscribe_function, #build_event_subscribe_stateful_function, #build_event_unsubscribe_function, #build_event_wait_function, #build_event_wait_ready_function, #build_event_wait_release_function, #build_event_wait_set_waiter_function, #build_event_wait_take_result_function, #ensure_event_error_enum, #ensure_event_runtime, #ensure_subscription_runtime, #event_failure_literal, #event_immediate_failure_task_literal, #event_listener_call_expression, #event_listener_function_type, #event_member_from_owner_type, #event_method_kind, #event_method_type, #event_next_generation_expression, #event_slot_activate_stateful_statements, #event_slot_activate_statements, #event_slot_active_expression, #event_slot_clear_statements, #event_slot_field_expression, #event_slot_local_decl, #event_slot_pointer_expression, #event_slot_wait_frame_expression, #event_stateful_listener_call_expression, #event_stateful_listener_function_type, #event_subscription_literal, #event_subscription_success_literal, #event_task_literal, #event_task_literal_from_raw_frame, #event_unsubscribe_call, #event_wait_success_literal, #inactive_event_slot_continue_guard, #lower_event_storage_pointer, #snapshot_field_expression, #subscription_field_expression, #void_value_expression, #wait_frame_field_expression

Methods included from MilkTea::Lowering::Declarations

#ensure_registered_storage_type_types, #expanded_declarations, #lower_const_value_literal, #lower_constants, #lower_enums, #lower_globals, #lower_imported_external_opaques, #lower_opaques, #lower_static_assert, #lower_static_asserts, #lower_struct_decl, #lower_structs, #lower_unions, #lower_variants, #static_initializer_ir_has_call?

Methods included from MilkTea::Lowering::Scans

#analysis_uses_fatal?, #analysis_uses_offsetof?, #block_uses_expression_pattern?, #block_uses_fatal?, #block_uses_offsetof?, #build_method_definitions, #collect_includes, #collect_nested_structs, #collect_one_struct_decl, #collect_structs, #expression_uses_pattern?, #fatal_expression?, #lower_when_chosen_body, #normalized_include_header, #offsetof_expression?, #prepare_analysis, #program_uses_fatal?, #program_uses_offsetof?, #standard_c_runtime_header?, #statement_uses_expression_pattern?

Methods included from Intrinsics

#event_subscription_result_type, #event_wait_result_type, #range_expr?, #string_literal_cstr_compatibility?, #type_ref_from_specialization

Methods included from Types::Predicates

#arity_error_message, #array_element_type, #array_length, #array_type?, #atomic_element_type, #atomic_type?, #call_arity_matches?, #callable_param_ref_supported?, #char_array_text_type?, #char_pointer_type?, #char_type?, #collection_loop_binding_type, #collection_loop_ref_element_type?, #collection_loop_type, #const_pointer_to, #const_pointer_type?, #contains_ref_type?, #contains_type_var?, #contextual_int_to_float_compatibility?, #contextual_int_to_float_target?, #dyn_type?, #exact_integer_constant_value, #exactly_representable_float32?, #external_numeric_compatibility?, #external_typed_null_pointer_compatibility?, #flatten_field_types, #float_constant_fits_type?, #foreign_boundary_element_compatible?, #foreign_char_pointer_buffer_boundary_compatible?, #foreign_external_layout_compatible?, #foreign_external_layout_field_compatible?, #foreign_function_type_projection_compatible?, #foreign_identity_projection_cast_compatible?, #foreign_identity_projection_compatible?, #foreign_identity_projection_reinterpret_compatible?, #foreign_opaque_c_name, #foreign_span_boundary_compatible?, #function_type_matches_proc_type?, #generic_integer_type_argument?, #integer_constant_fits_type?, #integer_like_char_source_type?, #integer_to_char_compatibility?, #integer_type_argument?, #lossless_external_integer_compatibility?, #lossless_integer_compatibility?, #method_dispatch_receiver_type, #mutable_pointer_type?, #mutable_to_const_pointer_compatibility?, #native_foreign_layout_compatible?, #null_assignable_to?, #numeric_constant_fits_type?, #opaque_type?, #own_to_raw_pointer_compatibility?, #own_type?, #owned_referent_type, #pointee_type, #pointer_type?, #proc_type?, #quat_vec4_layout_compatible?, #ref_lifetime, #ref_type?, #ref_type_without_lifetime?, #referenced_type, #same_external_opaque_c_name?, #same_external_opaque_handle_pointer_compatibility?, #simd_type?, #soa_type?, #str_buffer_type?, #string_builder_ref_type?, #string_builder_type?, #struct_with_target_type?, #task_root_proc_type?, #task_type?, #validate_generic_type!, #value_fits_integer_type?, #void_pointer_type?

Constructor Details

#initialize(program) ⇒ Lowerer

Returns a new instance of Lowerer.



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# File 'lib/milk_tea/core/lowering.rb', line 121

def initialize(program)
  @program = program
  @ctx = LoweringContext.new
  @artifacts = Artifacts.new
  @synthetic_proc_counter = 0
  @parallel_for_counter = 0
  @async_binding_counter = 0
  @method_definitions = build_method_definitions
  @bypass_sema_type_cache = false
end

Instance Attribute Details

#bypass_sema_type_cache ⇒ Object

Returns the value of attribute bypass_sema_type_cache.



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# File 'lib/milk_tea/core/lowering.rb', line 102

def bypass_sema_type_cache
  @bypass_sema_type_cache
end

#recorded_expr_types ⇒ Object (readonly)

Returns the value of attribute recorded_expr_types.



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# File 'lib/milk_tea/core/lowering.rb', line 103

def recorded_expr_types
  @recorded_expr_types
end

Instance Method Details

#assemble_modules(modules) ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 258

def assemble_modules(modules)
  if @program.root_analysis.module_kind == :raw_module
    raise LoweringError.new("cannot emit C for external file #{@program.root_analysis.module_name}",
      line: 0, column: 0, path: @program.root_path)
  end

  regenerate_cross_module_synthetics

  includes = collect_includes

  ordered = ordered_module_fragments(modules)
  all_constants = ordered.flat_map(&:constants)
  all_constants.concat(@artifacts.synthetic_constants)
  all_globals = ordered.flat_map(&:globals)
  all_opaques = ordered.flat_map(&:opaques)
  all_structs = ordered.flat_map(&:structs)
  all_unions = ordered.flat_map(&:unions)
  all_enums = ordered.flat_map(&:enums)
  all_variants = ordered.flat_map(&:variants)
  all_static_asserts = ordered.flat_map(&:static_asserts)
  all_static_asserts.concat(@artifacts.external_layout_assertions)
  all_functions = ordered.flat_map(&:functions)

  all_opaques.concat(lower_imported_external_opaques)
  all_structs.concat(@artifacts.synthetic_structs.uniq { |s| s.linkage_name })
  all_enums.concat(@artifacts.synthetic_enums.uniq { |e| e.linkage_name })
  all_functions.concat(@artifacts.synthetic_functions.uniq { |f| f.linkage_name })

  # Add emit-generated declarations
  @artifacts.emitted_declarations.each do |emitted|
    case emitted
    when IR::Function
      all_functions << emitted
    when IR::StructDecl
      all_structs << emitted
    when IR::Constant
      all_constants << emitted
    end
  end

  IR::Program.new(
    module_name: @program.root_analysis.module_name,
    includes:,
    constants: all_constants,
    globals: all_globals,
    opaques: all_opaques,
    structs: all_structs,
    unions: all_unions,
    enums: all_enums,
    variants: all_variants,
    static_asserts: all_static_asserts,
    functions: all_functions,
    path: @program.root_path,
  )
end

#canonical_module_names(names, deps_of) ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 366

def canonical_module_names(names, deps_of)
  visited = {}
  on_stack = {}
  order = []
  visit = nil
  visit = lambda do |name|
    return if visited[name] || on_stack[name]

    on_stack[name] = true
    (deps_of[name] || []).sort.each { |dep| visit.call(dep) }
    on_stack.delete(name)
    visited[name] = true
    order << name
  end
  names.sort.each { |name| visit.call(name) }
  order
end

#compute_ordered_analysis_pairs ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 336

def compute_ordered_analysis_pairs
  pairs = @program.analyses_by_path.to_a
  by_name = {}
  pairs.each do |path, analysis|
    name = analysis.module_name.to_s
    by_name[name] ||= [path, analysis]
  end

  present = by_name.keys.to_set
  deps_of = Hash.new { |hash, key| hash[key] = [] }
  pairs.each do |_path, analysis|
    name = analysis.module_name.to_s
    imported_module_names(analysis).each do |dep|
      deps_of[name] << dep if present.include?(dep) && dep != name
    end
  end
  deps_of.each_value(&:uniq!)

  canonical_module_names(by_name.keys, deps_of).map { |name| by_name[name] }
end

#ensure_events_for_analysis(analysis) ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 251

def ensure_events_for_analysis(analysis)
  analysis.ast.declarations.grep(AST::EventDecl).each do |decl|
    event_type = analysis.values.fetch(decl.name).type
    ensure_event_runtime(event_type)
  end
end

#imported_module_names(analysis) ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 357

def imported_module_names(analysis)
  imports = analysis.respond_to?(:imports) ? analysis.imports : nil
  return [] unless imports.respond_to?(:values)

  imports.values.filter_map do |binding|
    binding.name.to_s if binding.respond_to?(:name) && binding.name
  end
end

#lower ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 132

def lower
  @recorded_expr_types = {} if @bypass_sema_type_cache
  ir_program, _modules, _synths = lower_and_assemble
  ir_program
end

#lower_and_assemble(cached: nil, cached_synthetics: nil) ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 138

def lower_and_assemble(cached: nil, cached_synthetics: nil)
  modules, per_module_synthetics = lower_modules(cached:, cached_synthetics:)
  [assemble_modules(modules), modules, per_module_synthetics]
end

#lower_modules(cached: nil, cached_synthetics: nil) ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 143

def lower_modules(cached: nil, cached_synthetics: nil)
  if @program.root_analysis.module_kind == :raw_module
    raise LoweringError.new("cannot emit C for external file #{@program.root_analysis.module_name}",
      line: 0, column: 0, path: @program.root_path)
  end

  per_module_synthetics = {}
  per_module_funcs = Hash.new { |h, k| h[k] = [] }
  modules = {}

  cached_synthetics&.each do |_module_name, synths|
    @artifacts.synthetic_structs.concat(synths[:structs] || [])
    @artifacts.synthetic_enums.concat(synths[:enums] || [])
    @artifacts.synthetic_functions.concat(synths[:functions] || [])
    @artifacts.synthetic_constants.concat(synths[:constants] || [])
  end

  cached&.each do |module_name, cached_ir|
    modules[module_name] = cached_ir.with(functions: [])
    per_module_funcs[module_name] = cached_ir.functions.dup
    cached_ir.functions.each { |f| @artifacts.lowered_function_linkage_names[f.linkage_name] = true }
  end

  ordered_analysis_pairs.each do |path, analysis|
    next if analysis.module_kind == :raw_module
    next if modules.key?(analysis.module_name)

    prepare_analysis(analysis, path: path)
    collect_structs

    synth_before_s = @artifacts.synthetic_structs.length
    synth_before_e = @artifacts.synthetic_enums.length
    synth_before_f = @artifacts.synthetic_functions.length
    synth_before_c = @artifacts.synthetic_constants.length

    modules[analysis.module_name] = IR::Program.new(
      module_name: analysis.module_name,
      includes: [],
      constants: lower_constants.dup,
      globals: lower_globals.dup,
      opaques: lower_opaques.dup,
      structs: lower_structs.dup,
      unions: lower_unions.dup,
      enums: lower_enums.dup,
      variants: lower_variants.dup,
      static_asserts: lower_static_asserts.dup,
      functions: [],
      path: path,
    )
    per_module_funcs[analysis.module_name].concat(lower_functions)

    per_module_synthetics[analysis.module_name] = {
      structs: @artifacts.synthetic_structs[synth_before_s..] || [],
      enums: @artifacts.synthetic_enums[synth_before_e..] || [],
      functions: @artifacts.synthetic_functions[synth_before_f..] || [],
      constants: @artifacts.synthetic_constants[synth_before_c..] || [],
    }
  end

  pending = true
  while pending
    pending = false

    ordered_analysis_pairs.each do |path, analysis|
      next if analysis.module_kind == :raw_module

      prepare_analysis(analysis, path: path)
      ensure_events_for_analysis(analysis)

      synth_before_s = @artifacts.synthetic_structs.length
      synth_before_e = @artifacts.synthetic_enums.length
      synth_before_f = @artifacts.synthetic_functions.length
      synth_before_c = @artifacts.synthetic_constants.length

      newly_lowered = lower_functions
      next if newly_lowered.empty?

      per_module_funcs[analysis.module_name].concat(newly_lowered)

      delta = {
        structs: @artifacts.synthetic_structs[synth_before_s..] || [],
        enums: @artifacts.synthetic_enums[synth_before_e..] || [],
        functions: @artifacts.synthetic_functions[synth_before_f..] || [],
        constants: @artifacts.synthetic_constants[synth_before_c..] || [],
      }
      existing = per_module_synthetics[analysis.module_name]
      per_module_synthetics[analysis.module_name] = existing ? merge_synthetics(existing, delta) : delta

      pending = true
    end
  end

  modules.transform_values! do |fragment|
    fragment.with(functions: per_module_funcs[fragment.module_name])
  end

  [modules, per_module_synthetics]
end

#merge_synthetics(a, b) ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 242

def merge_synthetics(a, b)
  {
    structs: (a[:structs] || []) + (b[:structs] || []),
    enums: (a[:enums] || []) + (b[:enums] || []),
    functions: (a[:functions] || []) + (b[:functions] || []),
    constants: (a[:constants] || []) + (b[:constants] || []),
  }
end

#ordered_analysis_pairs ⇒ Object

Canonical, deterministic iteration order over the program's analyses so that lowering — and therefore the emitted C — is byte-identical regardless of how the analyses were assembled (live ModuleLoader vs. JSON-reconstructed bundle). Modules are emitted in dependency-first topological order, with lexicographic module-name order as a stable tiebreaker for independent modules and as a cycle-breaking fallback.



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# File 'lib/milk_tea/core/lowering.rb', line 332

def ordered_analysis_pairs
  @ordered_analysis_pairs ||= compute_ordered_analysis_pairs
end

#ordered_module_fragments(modules) ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 384

def ordered_module_fragments(modules)
  ordered = ordered_analysis_pairs.filter_map { |_path, analysis| modules[analysis.module_name] }
  ordered.concat(modules.values - ordered)
  ordered
end

#regenerate_cross_module_synthetics ⇒ Object 



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# File 'lib/milk_tea/core/lowering.rb', line 314

def regenerate_cross_module_synthetics
  ordered_analysis_pairs.each do |path, analysis|
    next if analysis.module_kind == :raw_module

    prepare_analysis(analysis, path: path)
    analysis.ast.declarations.grep(AST::EventDecl).each do |decl|
      event_type = analysis.values.fetch(decl.name).type
      ensure_event_runtime(event_type) if event_type.is_a?(Types::Event)
    end
  end
end