feat(rust): add common primitive compatibility layer
Introduce the Rust static library and move the shared byte, bitstream, CPU, error, xxHash, debug, and public-common implementations into it. Thin C shims preserve the existing header-driven C build while original tests link the Rust archive. This establishes the ABI-safe foundation for later codec and CLI ports; entropy coding, runtime support, codecs, dictionaries, and the CLI remain C. The top-down migration map documents that boundary and its validation path. Test Plan: - cargo fmt --check - cargo test --all-targets - cargo clippy --all-targets -- -D warnings - cargo build --release Refs: rust/README.md
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/* ******************************************************************
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* debug
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* Part of FSE library
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* You can contact the author at :
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* - Source repository : https://github.com/Cyan4973/FiniteStateEntropy
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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****************************************************************** */
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/*
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* This module only hosts one global variable
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* which can be used to dynamically influence the verbosity of traces,
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* such as DEBUGLOG and RAWLOG
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*/
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#include "debug.h"
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#if !defined(ZSTD_LINUX_KERNEL) || (DEBUGLEVEL>=2)
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/* We only use this when DEBUGLEVEL>=2, but we get -Werror=pedantic errors if a
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* translation unit is empty. So remove this from Linux kernel builds, but
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* otherwise just leave it in.
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*/
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int g_debuglevel = DEBUGLEVEL;
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#endif
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/* Implementation moved to Rust (rust/src/debug.rs) */
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extern int g_debuglevel;
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@@ -1,64 +1,4 @@
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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/* The purpose of this file is to have a single list of error strings embedded in binary */
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#include "error_private.h"
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const char* ERR_getErrorString(ERR_enum code)
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{
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#ifdef ZSTD_STRIP_ERROR_STRINGS
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(void)code;
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return "Error strings stripped";
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#else
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static const char* const notErrorCode = "Unspecified error code";
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switch( code )
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{
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case PREFIX(no_error): return "No error detected";
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case PREFIX(GENERIC): return "Error (generic)";
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case PREFIX(prefix_unknown): return "Unknown frame descriptor";
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case PREFIX(version_unsupported): return "Version not supported";
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case PREFIX(frameParameter_unsupported): return "Unsupported frame parameter";
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case PREFIX(frameParameter_windowTooLarge): return "Frame requires too much memory for decoding";
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case PREFIX(corruption_detected): return "Data corruption detected";
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case PREFIX(checksum_wrong): return "Restored data doesn't match checksum";
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case PREFIX(literals_headerWrong): return "Header of Literals' block doesn't respect format specification";
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case PREFIX(parameter_unsupported): return "Unsupported parameter";
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case PREFIX(parameter_combination_unsupported): return "Unsupported combination of parameters";
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case PREFIX(parameter_outOfBound): return "Parameter is out of bound";
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case PREFIX(init_missing): return "Context should be init first";
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case PREFIX(memory_allocation): return "Allocation error : not enough memory";
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case PREFIX(workSpace_tooSmall): return "workSpace buffer is not large enough";
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case PREFIX(stage_wrong): return "Operation not authorized at current processing stage";
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case PREFIX(tableLog_tooLarge): return "tableLog requires too much memory : unsupported";
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case PREFIX(maxSymbolValue_tooLarge): return "Unsupported max Symbol Value : too large";
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case PREFIX(maxSymbolValue_tooSmall): return "Specified maxSymbolValue is too small";
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case PREFIX(cannotProduce_uncompressedBlock): return "This mode cannot generate an uncompressed block";
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case PREFIX(stabilityCondition_notRespected): return "pledged buffer stability condition is not respected";
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case PREFIX(dictionary_corrupted): return "Dictionary is corrupted";
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case PREFIX(dictionary_wrong): return "Dictionary mismatch";
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case PREFIX(dictionaryCreation_failed): return "Cannot create Dictionary from provided samples";
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case PREFIX(dstSize_tooSmall): return "Destination buffer is too small";
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case PREFIX(srcSize_wrong): return "Src size is incorrect";
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case PREFIX(dstBuffer_null): return "Operation on NULL destination buffer";
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case PREFIX(noForwardProgress_destFull): return "Operation made no progress over multiple calls, due to output buffer being full";
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case PREFIX(noForwardProgress_inputEmpty): return "Operation made no progress over multiple calls, due to input being empty";
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/* following error codes are not stable and may be removed or changed in a future version */
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case PREFIX(frameIndex_tooLarge): return "Frame index is too large";
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case PREFIX(seekableIO): return "An I/O error occurred when reading/seeking";
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case PREFIX(dstBuffer_wrong): return "Destination buffer is wrong";
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case PREFIX(srcBuffer_wrong): return "Source buffer is wrong";
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case PREFIX(sequenceProducer_failed): return "Block-level external sequence producer returned an error code";
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case PREFIX(externalSequences_invalid): return "External sequences are not valid";
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case PREFIX(maxCode):
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default: return notErrorCode;
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}
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#endif
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}
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// Implementation moved to Rust
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extern const char* ERR_getErrorString(ERR_enum code);
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+2
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*/
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#define XXH_STATIC_LINKING_ONLY /* access advanced declarations */
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#define XXH_IMPLEMENTATION /* access definitions */
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#include "xxhash.h"
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/* Implementation moved to rust/src/xxhash.rs. */
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@@ -1,48 +1,10 @@
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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/*-*************************************
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* Dependencies
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***************************************/
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#define ZSTD_DEPS_NEED_MALLOC
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#include "error_private.h"
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#include "zstd_internal.h"
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/*-****************************************
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* Version
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******************************************/
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unsigned ZSTD_versionNumber(void) { return ZSTD_VERSION_NUMBER; }
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const char* ZSTD_versionString(void) { return ZSTD_VERSION_STRING; }
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/*-****************************************
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* ZSTD Error Management
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******************************************/
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#undef ZSTD_isError /* defined within zstd_internal.h */
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/*! ZSTD_isError() :
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* tells if a return value is an error code
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* symbol is required for external callers */
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unsigned ZSTD_isError(size_t code) { return ERR_isError(code); }
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/*! ZSTD_getErrorName() :
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* provides error code string from function result (useful for debugging) */
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const char* ZSTD_getErrorName(size_t code) { return ERR_getErrorName(code); }
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/*! ZSTD_getError() :
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* convert a `size_t` function result into a proper ZSTD_errorCode enum */
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ZSTD_ErrorCode ZSTD_getErrorCode(size_t code) { return ERR_getErrorCode(code); }
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/*! ZSTD_getErrorString() :
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* provides error code string from enum */
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const char* ZSTD_getErrorString(ZSTD_ErrorCode code) { return ERR_getErrorString(code); }
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/* Implementation moved to Rust (rust/src/zstd_common.rs) */
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extern unsigned ZSTD_versionNumber(void);
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extern const char* ZSTD_versionString(void);
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extern unsigned ZSTD_isError(size_t code);
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extern const char* ZSTD_getErrorName(size_t code);
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extern ZSTD_ErrorCode ZSTD_getErrorCode(size_t code);
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extern const char* ZSTD_getErrorString(ZSTD_ErrorCode code);
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