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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
d2056ef4b9
I'm proposing a different split, along the line of "what does this relate to". I view impl.h as having started down this route. Moving the inst store stuff to inst.h feels odd to me given how much else is there right now, but maybe it's still the best approach. Some files only contain a store, no structured class, but I felt the consistency in file naming (without _store suffixes) might help.
75 lines
3.0 KiB
C++
75 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 /*parse_node*/) -> 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 /*parse_node*/) -> bool {
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return true;
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}
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auto HandleAlias(Context& context, Parse::AliasId /*parse_node*/) -> bool {
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auto [expr_node, expr_id] = context.node_stack().PopExprWithParseNode();
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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().saw_access_modifier,
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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.parse_node,
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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.parse_node,
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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.parse_node,
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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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