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Fix the SQLITECPP_PURE_FUNC macro to actually use the correct "pure" attribute

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This commit is contained in:
Sébastien Rombauts 2020-01-14 09:47:43 +01:00
parent 13759e15ef
commit ffc1a3ef65
2 changed files with 32 additions and 26 deletions
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27
include/SQLiteCpp/Statement.h
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@ -11,37 +11,12 @@
#pragma once
#include <SQLiteCpp/Exception.h>
#include <SQLiteCpp/Utils.h> // SQLITECPP_PURE_FUNC
#include <string>
#include <map>
#include <climits> // For INT_MAX
// some macros are taken from https://github.com/nemequ/hedley/blob/master/hedley.h , it was public domain that time
#if defined(__GNUC__) || defined(__GNUG__) || defined(__clang__) ||\
(defined(__INTEL_COMPILER) && __INTEL_COMPILER > 1600) ||\
(defined(__ARMCC_VERSION) && __ARMCC_VERSION > 4010000) ||\
(\
defined(__TI_COMPILER_VERSION__) && (\
__TI_COMPILER_VERSION__ > 8003000 ||\
(__TI_COMPILER_VERSION__ > 7003000 && defined(__TI_GNU_ATTRIBUTE_SUPPORT__))\
)\
)
#if defined(__has_attribute)
#if !defined(SQLITECPP_PURE_FUNC) && __has_attribute(const)
#define SQLITECPP_PURE_FUNC __attribute__((const))
#endif
#endif
#endif
#if !defined(SQLITECPP_PURE_FUNC)
#define SQLITECPP_PURE_FUNC
#if defined(__GNUC__) || defined(__GNUG__) || defined(__clang__)
#warning "You have a compiler without the needed macros or attributes. Cannot detect and apply support of pure const functions. Efficiency likely will be harmed. Consider using another compiler or its version"
#elif _MSC_VER
#pragma message "You have a compiler without the needed macros or attributes. Cannot detect and apply support of pure const functions. Efficiency likely will be harmed. Consider using another compiler or its version"
#endif
#endif
// Forward declarations to avoid inclusion of <sqlite3.h> in a header
struct sqlite3;
struct sqlite3_stmt;

31
include/SQLiteCpp/Utils.h Normal file
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@ -0,0 +1,31 @@
/**
* @file Utils.h
* @ingroup SQLiteCpp
* @brief Definition of the SQLITECPP_PURE_FUNC macro.
*
* Copyright (c) 2012-2020 Sebastien Rombauts (sebastien.rombauts@gmail.com)
*
* Distributed under the MIT License (MIT) (See accompanying file LICENSE.txt
* or copy at http://opensource.org/licenses/MIT)
*/
#pragma once
// macro taken from https://github.com/nemequ/hedley/blob/master/hedley.h that was in public domain at this time
#if defined(__GNUC__) || defined(__GNUG__) || defined(__clang__) ||\
(defined(__INTEL_COMPILER) && __INTEL_COMPILER > 1600) ||\
(defined(__ARMCC_VERSION) && __ARMCC_VERSION > 4010000) ||\
(\
defined(__TI_COMPILER_VERSION__) && (\
__TI_COMPILER_VERSION__ > 8003000 ||\
(__TI_COMPILER_VERSION__ > 7003000 && defined(__TI_GNU_ATTRIBUTE_SUPPORT__))\
)\
)
#if defined(__has_attribute)
#if !defined(SQLITECPP_PURE_FUNC) && __has_attribute(pure)
#define SQLITECPP_PURE_FUNC __attribute__((pure))
#endif
#endif
#endif
#if !defined(SQLITECPP_PURE_FUNC)
#define SQLITECPP_PURE_FUNC
#endif