1 //===- HeaderMapTypes.h - Types for the header map format -------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #ifndef LLVM_CLANG_LEX_HEADERMAPTYPES_H
10 #define LLVM_CLANG_LEX_HEADERMAPTYPES_H
17 HMAP_HeaderMagicNumber = ('h' << 24) | ('m' << 16) | ('a' << 8) | 'p',
18 HMAP_HeaderVersion = 1,
19 HMAP_EmptyBucketKey = 0
23 uint32_t Key; // Offset (into strings) of key.
24 uint32_t Prefix; // Offset (into strings) of value prefix.
25 uint32_t Suffix; // Offset (into strings) of value suffix.
29 uint32_t Magic; // Magic word, also indicates byte order.
30 uint16_t Version; // Version number -- currently 1.
31 uint16_t Reserved; // Reserved for future use - zero for now.
32 uint32_t StringsOffset; // Offset to start of string pool.
33 uint32_t NumEntries; // Number of entries in the string table.
34 uint32_t NumBuckets; // Number of buckets (always a power of 2).
35 uint32_t MaxValueLength; // Length of longest result path (excluding nul).
36 // An array of 'NumBuckets' HMapBucket objects follows this header.
37 // Strings follow the buckets, at StringsOffset.
40 } // end namespace clang.