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https://github.com/carbon-language/carbon-lang.git
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Geoff RomerandJon Ross-Perkins
18cfeb7476
This includes checking and lowering for concrete form literals. Support for symbolic forms is future work. --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
63 lines
2.6 KiB
C++
63 lines
2.6 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_PARSE_NODE_CATEGORY_H_
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#define CARBON_TOOLCHAIN_PARSE_NODE_CATEGORY_H_
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#include "common/enum_mask_base.h"
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#include "common/ostream.h"
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namespace Carbon::Parse {
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// An X-macro for node categories. Uses should look like:
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//
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// #define CARBON_NODE_CATEGORY_FOR_XYZ(Name) ...
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// CARBON_NODE_CATEGORY(CARBON_NODE_CATEGORY_FOR_XYZ)
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// #undef CARBON_NODE_CATEGORY_FOR_XYZ
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#define CARBON_NODE_CATEGORY(X) \
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X(Decl) \
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X(Expr) \
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/* `impl <type> as` or just `impl as` */ \
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X(ImplAs) \
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X(IntConst) \
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X(MemberExpr) \
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X(MemberName) \
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X(Modifier) \
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X(NonExprName) \
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/* `observe <type> == <type>` or `observe <type> impls` */ \
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X(ObserveOperator) \
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X(PackageName) \
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X(Pattern) \
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/* `require <type> impls` or just `require impls` */ \
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X(RequireImpls) \
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X(Requirement) \
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X(ReturnDecl) \
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X(Statement)
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// We expect this to grow, so are using a bigger size than needed.
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CARBON_DEFINE_RAW_ENUM_MASK(NodeCategory, uint32_t) {
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CARBON_NODE_CATEGORY(CARBON_RAW_ENUM_MASK_ENUMERATOR)
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};
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// Represents a set of keyword modifiers, using a separate bit per modifier.
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class NodeCategory : public CARBON_ENUM_MASK_BASE(NodeCategory) {
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public:
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CARBON_NODE_CATEGORY(CARBON_ENUM_MASK_CONSTANT_DECL)
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using EnumMaskBase::EnumMaskBase;
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// Provide implicit conversion because the raw enum is used in templates.
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explicit(false) constexpr NodeCategory(RawEnumType value) {
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*this = EnumBase::Make(value);
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}
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};
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#define CARBON_NODE_CATEGORY_WITH_TYPE(X) \
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CARBON_ENUM_MASK_CONSTANT_DEFINITION(NodeCategory, X)
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CARBON_NODE_CATEGORY(CARBON_NODE_CATEGORY_WITH_TYPE)
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#undef CARBON_NODE_CATEGORY_WITH_TYPE
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} // namespace Carbon::Parse
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#endif // CARBON_TOOLCHAIN_PARSE_NODE_CATEGORY_H_
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