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Jon Ross-Perkins
9e1a5cfaee
This was bugging me after I saw all the strings; it feels like this is why we have EnumBase on the toolchain side. I've included the move of EnumBase to //common because I figured it's reasonable to evaluate together; if we don't want EnumBase in this case, it doesn't make sense to move.
50 lines
1.5 KiB
C++
50 lines
1.5 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 "explorer/interpreter/builtins.h"
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#include "explorer/common/error_builders.h"
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using llvm::dyn_cast;
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namespace Carbon {
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CARBON_DEFINE_ENUM_CLASS_NAMES(Builtin) = {
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#define CARBON_BUILTIN(Name) CARBON_ENUM_CLASS_NAME_STRING(Name)
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#include "explorer/interpreter/builtins.def"
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};
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void Builtins::Register(Nonnull<const Declaration*> decl) {
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if (const auto* interface = dyn_cast<InterfaceDeclaration>(decl)) {
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if (interface->name().is_qualified()) {
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return;
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}
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static std::map<std::string, int, std::less<>>* builtin_indexes = [] {
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std::map<std::string, int, std::less<>> builtin_indexes;
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for (int index = 0; index <= Builtin::NumBuiltins; ++index) {
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builtin_indexes.emplace(Builtin::FromInt(index).name(), index);
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}
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return new auto(std::move(builtin_indexes));
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}();
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auto it = builtin_indexes->find(interface->name().inner_name());
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if (it != builtin_indexes->end()) {
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builtins_[it->second] = interface;
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}
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}
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}
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auto Builtins::Get(SourceLocation source_loc, Builtin builtin) const
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-> ErrorOr<Nonnull<const Declaration*>> {
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std::optional<const Declaration*> result = builtins_[builtin.AsInt()];
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if (!result.has_value()) {
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return ProgramError(source_loc)
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<< "missing declaration for builtin `" << builtin << "`";
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}
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return result.value();
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}
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} // namespace Carbon
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