| //===- HeaderMapTypes.h - Types for the header map format -------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_LEX_HEADERMAPTYPES_H |
| #define LLVM_CLANG_LEX_HEADERMAPTYPES_H |
| |
| #include <cstdint> |
| |
| namespace clang { |
| |
| enum { |
| HMAP_HeaderMagicNumber = ('h' << 24) | ('m' << 16) | ('a' << 8) | 'p', |
| HMAP_HeaderVersion = 1, |
| HMAP_EmptyBucketKey = 0 |
| }; |
| |
| struct HMapBucket { |
| uint32_t Key; // Offset (into strings) of key. |
| uint32_t Prefix; // Offset (into strings) of value prefix. |
| uint32_t Suffix; // Offset (into strings) of value suffix. |
| }; |
| |
| struct HMapHeader { |
| uint32_t Magic; // Magic word, also indicates byte order. |
| uint16_t Version; // Version number -- currently 1. |
| uint16_t Reserved; // Reserved for future use - zero for now. |
| uint32_t StringsOffset; // Offset to start of string pool. |
| uint32_t NumEntries; // Number of entries in the string table. |
| uint32_t NumBuckets; // Number of buckets (always a power of 2). |
| uint32_t MaxValueLength; // Length of longest result path (excluding nul). |
| // An array of 'NumBuckets' HMapBucket objects follows this header. |
| // Strings follow the buckets, at StringsOffset. |
| }; |
| |
| } // end namespace clang. |
| |
| #endif |
