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Efficiency - adding a pure attribute to getIndex() #243

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Jan 14, 2020
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Efficiency - adding a pure attribute to getIndex() #243

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27 changes: 27 additions & 0 deletions include/SQLiteCpp/Statement.h
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,32 @@
#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;
Expand Down Expand Up @@ -121,6 +147,7 @@ class Statement
// instead of being copied.
// => if you know what you are doing, use bindNoCopy() instead of bind()

SQLITECPP_PURE_FUNC
int getIndex(const char * const apName);

/**
Expand Down