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Özgür T. ÖnsoyandRichard Smith
1f22ba91bb
This solves the problem where `interface` imports are incorrectly diagnosed as duplicate names in impl files. Follows the implementation logic used in `handle_class.cpp`. --------- Co-authored-by: Richard Smith <richard@metafoo.co.uk>
98 lines
3.8 KiB
C++
98 lines
3.8 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef CARBON_TOOLCHAIN_SEM_IR_INTERFACE_H_
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#define CARBON_TOOLCHAIN_SEM_IR_INTERFACE_H_
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#include "toolchain/base/value_store.h"
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#include "toolchain/sem_ir/core_interface.h"
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#include "toolchain/sem_ir/entity_with_params_base.h"
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#include "toolchain/sem_ir/ids.h"
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namespace Carbon::SemIR {
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// Interface-specific fields.
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//
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// TODO: Factor out the shared fields between InterfaceFields and
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// NamedConstraintFields.
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struct InterfaceFields {
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// The following members are set at the `{` of the interface definition.
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// The interface scopes.
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NameScopeId scope_without_self_id = NameScopeId::None;
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NameScopeId scope_with_self_id = NameScopeId::None;
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// The block of instructions outside the interface-with-self. This is where
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// the `Self` instruction can be constructed.
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InstBlockId body_block_without_self_id = InstBlockId::None;
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// The interface-with-self generic, where the `Self` is a parameter to the
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// generic. This generic contains all the associated entities of the
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// interface.
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GenericId generic_with_self_id = GenericId::None;
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// The first block of the interface-with-self body.
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// TODO: Handle control flow in the interface body, such as if-expressions.
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InstBlockId body_block_with_self_id = InstBlockId::None;
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// The implicit `Self` parameter. This is a SymbolicBinding instruction.
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InstId self_param_id = InstId::None;
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// Identifies whether the interface is a core interface.
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CoreInterface core_interface = CoreInterface::Unknown;
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// The following members are set at the `}` of the interface definition.
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RequireImplsBlockId require_impls_block_id = RequireImplsBlockId::None;
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ObserveBlockId observe_block_id = ObserveBlockId::None;
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InstBlockId associated_entities_id = InstBlockId::None;
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};
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// An interface. See EntityWithParamsBase regarding the inheritance here.
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struct Interface : public EntityWithParamsBase,
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public InterfaceFields,
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public Printable<Interface> {
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auto Print(llvm::raw_ostream& out) const -> void {
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out << "{";
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PrintBaseFields(out);
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out << ", require_impls_block_id: " << require_impls_block_id;
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if (core_interface != CoreInterface::Unknown) {
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out << ", core_interface: " << core_interface;
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}
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out << "}";
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}
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// This is false until we reach the `}` of the interface definition.
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auto is_complete() const -> bool {
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return associated_entities_id.has_value();
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}
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// Determines whether we're currently defining the interface. This is true
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// between the braces of the interface.
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auto is_being_defined() const -> bool {
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return has_definition_started() && !is_complete();
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}
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// When merging a declaration and definition, prefer things which would point
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// at the definition for diagnostics.
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auto MergeDefinition(const Interface& definition) -> void {
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EntityWithParamsBase::MergeBaseDefinition(definition);
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scope_with_self_id = definition.scope_with_self_id;
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scope_without_self_id = definition.scope_without_self_id;
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body_block_without_self_id = definition.body_block_without_self_id;
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body_block_with_self_id = definition.body_block_with_self_id;
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self_param_id = definition.self_param_id;
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core_interface = definition.core_interface;
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require_impls_block_id = definition.require_impls_block_id;
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observe_block_id = definition.observe_block_id;
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associated_entities_id = definition.associated_entities_id;
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}
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};
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using InterfaceStore = ValueStore<InterfaceId, Interface, Tag<CheckIRId>>;
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} // namespace Carbon::SemIR
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namespace Carbon {
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extern template class ValueStore<SemIR::InterfaceId, SemIR::Interface,
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Tag<SemIR::CheckIRId>>;
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} // namespace Carbon
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#endif // CARBON_TOOLCHAIN_SEM_IR_INTERFACE_H_
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