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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
86a7c9ff45
This was previously discussed at https://discord.com/channels/655572317891461132/655578254970716160/1209975051588210729. I'm initiating this mainly because we typically use "id" suffixes to indicate an `IdBase` being passed around and the non-id suffix of `parse_node` suggests at it carrying more data than it actually does. There used to be more reason for avoiding `node_id` because `SemIR::InstId` used to be named `NodeId`, but that's no longer necessary. As a consequence, I'd like to rename `parse_node` to more precisely reflect its type. In full, this is doing: ``` parse_node_kind -> node_kind parse_node -> node_id ParseNodeCategory -> NodeCategory ParseNodeKind -> NodeKind ParseNode -> NodeId ``` This is primarily in check and sem_ir, but with some `parse_node_kind` references in parse too. Pluralization is consistent with name forms on both sides, so that wasn't part of my replacements.
76 lines
3.0 KiB
C++
76 lines
3.0 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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#include "toolchain/check/context.h"
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#include "toolchain/check/modifiers.h"
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#include "toolchain/parse/node_ids.h"
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#include "toolchain/sem_ir/ids.h"
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#include "toolchain/sem_ir/typed_insts.h"
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namespace Carbon::Check {
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auto HandleAliasIntroducer(Context& context,
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Parse::AliasIntroducerId /*node_id*/) -> bool {
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context.decl_state_stack().Push(DeclState::Alias);
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context.decl_name_stack().PushScopeAndStartName();
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return true;
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}
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auto HandleAliasInitializer(Context& /*context*/,
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Parse::AliasInitializerId /*node_id*/) -> bool {
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return true;
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}
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auto HandleAlias(Context& context, Parse::AliasId /*node_id*/) -> bool {
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auto [expr_node, expr_id] = context.node_stack().PopExprWithNodeId();
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auto name_context = context.decl_name_stack().FinishName();
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LimitModifiersOnDecl(context, KeywordModifierSet::Access,
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Lex::TokenKind::Alias);
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auto modifiers = context.decl_state_stack().innermost().modifier_set;
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if (!!(modifiers & KeywordModifierSet::Access)) {
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context.TODO(context.decl_state_stack().innermost().modifier_node_id(
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ModifierOrder::Access),
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"access modifier");
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}
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context.decl_state_stack().Pop(DeclState::Alias);
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auto bind_name_id = context.bind_names().Add(
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{.name_id = name_context.name_id_for_new_inst(),
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.enclosing_scope_id = name_context.enclosing_scope_id_for_new_inst()});
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auto alias_id = SemIR::InstId::Invalid;
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if (expr_id.is_builtin()) {
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// Type (`bool`) and value (`false`) literals provided by the builtin
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// structure should be turned into name references.
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// TODO: Look into handling `false`, this doesn't do it right now because it
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// sees a value instruction instead of a builtin.
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alias_id = context.AddInst(
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{name_context.node_id,
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SemIR::BindAlias{context.insts().Get(expr_id).type_id(), bind_name_id,
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expr_id}});
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} else if (auto inst = context.insts().TryGetAs<SemIR::NameRef>(expr_id)) {
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// Pass through name references, albeit changing the name in use.
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alias_id = context.AddInst(
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{name_context.node_id,
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SemIR::BindAlias{inst->type_id, bind_name_id, inst->value_id}});
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} else {
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CARBON_DIAGNOSTIC(AliasRequiresNameRef, Error,
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"Alias initializer must be a name reference.");
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context.emitter().Emit(expr_node, AliasRequiresNameRef);
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alias_id =
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context.AddInst({name_context.node_id,
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SemIR::BindAlias{SemIR::TypeId::Error, bind_name_id,
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SemIR::InstId::BuiltinError}});
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}
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// Add the name of the binding to the current scope.
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context.decl_name_stack().PopScope();
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context.decl_name_stack().AddNameToLookup(name_context, alias_id);
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return true;
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}
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} // namespace Carbon::Check
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