mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-26 22:02:30 +01:00
Jon Ross-Perkins
1c748c0f14
Continuing along with #3070. Note this is just a file rename, with BUILD edits; every file previously in semantics/ should show as moved (except maybe BUILDs, which split).
81 lines
2.9 KiB
C++
81 lines
2.9 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
|
// Exceptions. See /LICENSE for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
|
|
#ifndef CARBON_TOOLCHAIN_SEM_IR_NODE_KIND_H_
|
|
#define CARBON_TOOLCHAIN_SEM_IR_NODE_KIND_H_
|
|
|
|
#include <cstdint>
|
|
|
|
#include "common/enum_base.h"
|
|
#include "llvm/ADT/FoldingSet.h"
|
|
|
|
namespace Carbon::SemIR {
|
|
|
|
// Whether a node produces or represents a value, and if so, what kind of value.
|
|
enum class NodeValueKind : int8_t {
|
|
// This node doesn't produce a value, and shouldn't be referenced by other
|
|
// nodes.
|
|
None,
|
|
// This node represents an untyped value. It may be referenced by other nodes
|
|
// expecting this kind of value.
|
|
Untyped,
|
|
// This node represents an expression or expression-like construct that
|
|
// produces a value of the type indicated by its `type_id` field.
|
|
Typed,
|
|
};
|
|
|
|
// Whether a node is a terminator or part of the terminator sequence. The nodes
|
|
// in a block appear in the order NotTerminator, then TerminatorSequence, then
|
|
// Terminator, which is also the numerical order of these values.
|
|
enum class TerminatorKind : int8_t {
|
|
// This node is not a terminator.
|
|
NotTerminator,
|
|
// This node is not itself a terminator, but forms part of a terminator
|
|
// sequence.
|
|
TerminatorSequence,
|
|
// This node is a terminator.
|
|
Terminator,
|
|
};
|
|
|
|
CARBON_DEFINE_RAW_ENUM_CLASS(NodeKind, uint8_t) {
|
|
#define CARBON_SEMANTICS_NODE_KIND(Name) CARBON_RAW_ENUM_ENUMERATOR(Name)
|
|
#include "toolchain/sem_ir/node_kind.def"
|
|
};
|
|
|
|
class NodeKind : public CARBON_ENUM_BASE(NodeKind) {
|
|
public:
|
|
#define CARBON_SEMANTICS_NODE_KIND(Name) CARBON_ENUM_CONSTANT_DECLARATION(Name)
|
|
#include "toolchain/sem_ir/node_kind.def"
|
|
|
|
using EnumBase::Create;
|
|
|
|
// Returns the name to use for this node kind in Semantics IR.
|
|
[[nodiscard]] auto ir_name() const -> llvm::StringRef;
|
|
|
|
// Returns whether this kind of node is expected to produce a value.
|
|
[[nodiscard]] auto value_kind() const -> NodeValueKind;
|
|
|
|
// Returns whether this node kind is a code block terminator, such as an
|
|
// unconditional branch instruction, or part of the termination sequence,
|
|
// such as a conditional branch instruction. The termination sequence of a
|
|
// code block appears after all other instructions, and ends with a
|
|
// terminator instruction.
|
|
[[nodiscard]] auto terminator_kind() const -> TerminatorKind;
|
|
|
|
// Compute a fingerprint for this node kind, allowing its use as part of the
|
|
// key in a `FoldingSet`.
|
|
void Profile(llvm::FoldingSetNodeID& id) { id.AddInteger(AsInt()); }
|
|
};
|
|
|
|
#define CARBON_SEMANTICS_NODE_KIND(Name) \
|
|
CARBON_ENUM_CONSTANT_DEFINITION(NodeKind, Name)
|
|
#include "toolchain/sem_ir/node_kind.def"
|
|
|
|
// We expect the node kind to fit compactly into 8 bits.
|
|
static_assert(sizeof(NodeKind) == 1, "Kind objects include padding!");
|
|
|
|
} // namespace Carbon::SemIR
|
|
|
|
#endif // CARBON_TOOLCHAIN_SEM_IR_NODE_KIND_H_
|