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https://github.com/carbon-language/carbon-lang.git
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josh11b
5020fdb3be
Part of switching to the [abbreviations we've decided to use](https://docs.google.com/document/d/1RRYMm42osyqhI2LyjrjockYCutQ5dOf8Abu50kTrkX0/edit?resourcekey=0-kHyqOESbOHmzZphUbtLrTw#heading=h.pph7i5m5un7q). I will rename files in a follow-up PR.
56 lines
1.8 KiB
C++
56 lines
1.8 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_PARSE_NODE_KIND_H_
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#define CARBON_TOOLCHAIN_PARSE_NODE_KIND_H_
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#include <cstdint>
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#include "common/enum_base.h"
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#include "toolchain/lex/token_kind.h"
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namespace Carbon::Parse {
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CARBON_DEFINE_RAW_ENUM_CLASS(NodeKind, uint8_t) {
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#define CARBON_PARSE_NODE_KIND(Name) CARBON_RAW_ENUM_ENUMERATOR(Name)
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#include "toolchain/parse/node_kind.def"
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};
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// A class wrapping an enumeration of the different kinds of nodes in the parse
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// tree.
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class NodeKind : public CARBON_ENUM_BASE(NodeKind) {
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public:
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#define CARBON_PARSE_NODE_KIND(Name) CARBON_ENUM_CONSTANT_DECL(Name)
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#include "toolchain/parse/node_kind.def"
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// Returns true if the node is bracketed; otherwise, child_count is used.
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auto has_bracket() const -> bool;
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// Returns the bracketing node kind for the current node kind. Requires that
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// has_bracket is true.
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auto bracket() const -> NodeKind;
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// Returns the number of children that the node must have, often 0. Requires
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// that has_bracket is false.
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auto child_count() const -> int32_t;
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using EnumBase::Create;
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};
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#define CARBON_PARSE_NODE_KIND(Name) \
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CARBON_ENUM_CONSTANT_DEFINITION(NodeKind, Name)
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#include "toolchain/parse/node_kind.def"
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// We expect the parse node kind to fit compactly into 8 bits.
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static_assert(sizeof(NodeKind) == 1, "Kind objects include padding!");
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// Validates that a `parse_node_kind` parser node can be generated for a
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// `lex_token_kind` lexer token.
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void CheckNodeMatchesLexerToken(NodeKind parse_node_kind,
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Lex::TokenKind lex_token_kind, bool has_error);
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} // namespace Carbon::Parse
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#endif // CARBON_TOOLCHAIN_PARSE_NODE_KIND_H_
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