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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
f5a3a9a7e0
`Self` is modeled as a `bind_symbolic_name` with no corresponding value, for now at least. In the future it might make sense to model it as a new kind of instruction, or as a `bind_symbolic_name` whose value is a `param`, but for now we just want it to introduce a symbolic constant. In order to convert a value like the `Self` of an interface to a type, a new instruction `facet_type_access` is introduced. This notionally accesses the "type" field within a facet, converting it from a pair of (type, witness) into just the type.
58 lines
2.0 KiB
C++
58 lines
2.0 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/sem_ir/ids.h"
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namespace Carbon::SemIR {
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// An interface.
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struct Interface : public Printable<Interface> {
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auto Print(llvm::raw_ostream& out) const -> void {
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out << "{name: " << name_id << ", enclosing_scope: " << enclosing_scope_id
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<< "}";
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}
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// Determines whether this interface has been fully defined. This is false
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// until we reach the `}` of the interface definition.
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auto is_defined() const -> bool { return associated_entities_id.is_valid(); }
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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 definition_id.is_valid() && !is_defined();
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}
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// The following members always have values, and do not change throughout the
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// lifetime of the interface.
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// The interface name.
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NameId name_id;
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// The enclosing scope.
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NameScopeId enclosing_scope_id;
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// The first declaration of the interface. This is a InterfaceDecl.
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InstId decl_id;
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// The following members are set at the `{` of the interface definition.
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// The definition of the interface. This is a InterfaceDecl.
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InstId definition_id = InstId::Invalid;
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// The interface scope.
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NameScopeId scope_id = NameScopeId::Invalid;
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// The first block of the interface body.
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// TODO: Handle control flow in the interface body, such as if-expressions.
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InstBlockId body_block_id = InstBlockId::Invalid;
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// The implicit `Self` parameter. This is a BindSymbolicName instruction.
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InstId self_param_id = InstId::Invalid;
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// The following members are set at the `}` of the interface definition.
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InstBlockId associated_entities_id = InstBlockId::Invalid;
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};
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} // namespace Carbon::SemIR
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#endif // CARBON_TOOLCHAIN_SEM_IR_INTERFACE_H_
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