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Jon Ross-Perkins
9751b4701d
I think there's more we can do here, but this seemed like a good checkpoint to make sure the path I'm going down is roughly what you expected. There's one actual edit in if expression structure to match the increased enforcement.
50 lines
1.6 KiB
C++
50 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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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(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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