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SQL: start_end_t members as LEX_CSTRING

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This commit is contained in:
Aleksey Midenkov
2017-06-22 23:09:34 +03:00
parent 670b7f5fd4
commit 07ff0e1202
8 changed files with 176 additions and 168 deletions
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99
sql/vers_utils.h
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@ -3,6 +3,7 @@
#include "table.h"
#include "sql_class.h"
#include "vers_string.h"
class MDL_auto_lock
{
@ -30,104 +31,6 @@ public:
bool acquire_error() const { return error; }
};
struct Compare_strncmp
{
int operator()(const LEX_STRING& a, const LEX_STRING& b) const
{
return strncmp(a.str, b.str, a.length);
}
static CHARSET_INFO* charset()
{
return system_charset_info;
}
};
template <CHARSET_INFO* &CS= system_charset_info>
struct Compare_my_strcasecmp
{
int operator()(const LEX_STRING& a, const LEX_STRING& b) const
{
DBUG_ASSERT(a.str[a.length] == 0 && b.str[b.length] == 0);
return my_strcasecmp(CS, a.str, b.str);
}
static CHARSET_INFO* charset()
{
return CS;
}
};
typedef Compare_my_strcasecmp<files_charset_info> Compare_fs;
typedef Compare_my_strcasecmp<table_alias_charset> Compare_t;
struct LEX_STRING_u : public LEX_STRING
{
LEX_STRING_u()
{
str= NULL;
LEX_STRING::length= 0;
}
LEX_STRING_u(const char *_str, uint32 _len, CHARSET_INFO *)
{
str= const_cast<char *>(_str);
LEX_STRING::length= _len;
}
uint32 length() const
{
return LEX_STRING::length;
}
const char *ptr() const
{
return LEX_STRING::str;
}
const LEX_STRING& lex_string() const
{
return *this;
}
};
template <class Compare= Compare_strncmp, class Storage= LEX_STRING_u>
struct XString : public Storage
{
public:
XString() {}
XString(char *_str, size_t _len) :
Storage(_str, _len, Compare::charset())
{
}
XString(LEX_STRING& src) :
Storage(src.str, src.length, Compare::charset())
{
}
XString(char *_str) :
Storage(_str, strlen(_str), Compare::charset())
{
}
bool operator== (const XString& b) const
{
return Storage::length() == b.length() && 0 == Compare()(this->lex_string(), b.lex_string());
}
bool operator!= (const XString& b) const
{
return !(*this == b);
}
operator const char* () const
{
return Storage::ptr();
}
};
typedef XString<> LString;
typedef XString<Compare_fs> LString_fs;
typedef XString<Compare_strncmp, String> SString;
typedef XString<Compare_fs, String> SString_fs;
typedef XString<Compare_t, String> SString_t;
#define XSTRING_WITH_LEN(X) (X).ptr(), (X).length()
#define DB_WITH_LEN(X) (X).db, (X).db_length
#define TABLE_NAME_WITH_LEN(X) (X).table_name, (X).table_name_length
class Local_da : public Diagnostics_area
{