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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.
48 lines
1.6 KiB
C++
48 lines
1.6 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_PARSER_PARSE_NODE_KIND_H_
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#define CARBON_TOOLCHAIN_PARSER_PARSE_NODE_KIND_H_
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#include <cstdint>
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#include "common/enum_base.h"
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namespace Carbon {
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CARBON_DEFINE_RAW_ENUM_CLASS(ParseNodeKind, uint8_t) {
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#define CARBON_PARSE_NODE_KIND(Name) CARBON_RAW_ENUM_ENUMERATOR(Name)
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#include "toolchain/parser/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 ParseNodeKind : public CARBON_ENUM_BASE(ParseNodeKind) {
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public:
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#define CARBON_PARSE_NODE_KIND(Name) CARBON_ENUM_CONSTANT_DECLARATION(Name)
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#include "toolchain/parser/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 -> ParseNodeKind;
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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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};
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#define CARBON_PARSE_NODE_KIND(Name) \
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CARBON_ENUM_CONSTANT_DEFINITION(ParseNodeKind, Name)
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#include "toolchain/parser/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(ParseNodeKind) == 1, "Kind objects include padding!");
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} // namespace Carbon
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#endif // CARBON_TOOLCHAIN_PARSER_PARSE_NODE_KIND_H_
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