database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-08 03:22:21 +03:00
Code Activity

Initialize the global built-in function table at start-time

Browse Source 
instead of at compile-time.  This is less prone to malfunction when
compile-time parameters very. (CVS 5583)

FossilOrigin-Name: ef6936e50adb9ebea39c890167403fff01bbb5ed
This commit is contained in:
drh
2008-08-21 18:49:27 +00:00
parent 801880f66c
commit 70a8ca3c1e
11 changed files with 146 additions and 265 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
src/sqliteInt.h
View File

@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.757 2008/08/20 16:35:10 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.758 2008/08/21 18:49:28 drh Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_
@@ -366,7 +366,7 @@ typedef UINT32_TYPE u32; /* 4-byte unsigned integer */
typedef UINT16_TYPE u16; /* 2-byte unsigned integer */
typedef INT16_TYPE i16; /* 2-byte signed integer */
typedef UINT8_TYPE u8; /* 1-byte unsigned integer */
typedef UINT8_TYPE i8; /* 1-byte signed integer */
typedef INT8_TYPE i8; /* 1-byte signed integer */
/*
** Macros to determine whether the machine is big or little endian,
@@ -455,6 +455,7 @@ typedef struct Expr Expr;
typedef struct ExprList ExprList;
typedef struct FKey FKey;
typedef struct FuncDef FuncDef;
typedef struct FuncDefHash FuncDefHash;
typedef struct IdList IdList;
typedef struct Index Index;
typedef struct KeyClass KeyClass;
@@ -592,6 +593,16 @@ struct LookasideSlot {
LookasideSlot *pNext; /* Next buffer in the list of free buffers */
};
/*
** A hash table for function definitions.
**
** Hash each FuncDef structure into one of the FuncDefHash.a[] slots.
** Collisions are on the FuncDef.pHash chain.
*/
struct FuncDefHash {
FuncDef *a[23]; /* Hash table for functions */
};
/*
** Each database is an instance of the following structure.
**
@@ -688,7 +699,7 @@ struct sqlite3 {
sqlite3_vtab **aVTrans; /* Virtual tables with open transactions */
int nVTrans; /* Allocated size of aVTrans */
#endif
Hash aFunc; /* All functions that can be in SQL exprs */
FuncDefHash aFunc; /* Hash table of connection functions */
Hash aCollSeq; /* All collating sequences */
BusyHandler busyHandler; /* Busy callback */
int busyTimeout; /* Busy handler timeout, in msec */
@@ -753,7 +764,7 @@ struct sqlite3 {
** points to a linked list of these structures.
*/
struct FuncDef {
i16 nArg; /* Number of arguments. -1 means unlimited */
i8 nArg; /* Number of arguments. -1 means unlimited */
u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */
u8 needCollSeq; /* True if sqlite3GetFuncCollSeq() might be called */
u8 flags; /* Some combination of SQLITE_FUNC_* */
@@ -763,14 +774,15 @@ struct FuncDef {
void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */
void (*xFinalize)(sqlite3_context*); /* Aggregate finializer */
char *zName; /* SQL name of the function. */
FuncDef *pHash; /* Next with a different name but the same hash */
};
/*
** Possible values for FuncDef.flags
*/
#define SQLITE_FUNC_LIKE 0x01 /* Candidate for the LIKE optimization */
#define SQLITE_FUNC_CASE 0x02 /* Case-sensitive LIKE-type function */
#define SQLITE_FUNC_EPHEM 0x04 /* Ephermeral. Delete with VDBE */
#define SQLITE_FUNC_LIKE 0x01 /* Candidate for the LIKE optimization */
#define SQLITE_FUNC_CASE 0x02 /* Case-sensitive LIKE-type function */
#define SQLITE_FUNC_EPHEM 0x04 /* Ephermeral. Delete with VDBE */
/*
** Each SQLite module (virtual table definition) is defined by an
@@ -2127,9 +2139,11 @@ ExprList *sqlite3ExprListDup(sqlite3*,ExprList*);
SrcList *sqlite3SrcListDup(sqlite3*,SrcList*);
IdList *sqlite3IdListDup(sqlite3*,IdList*);
Select *sqlite3SelectDup(sqlite3*,Select*);
void sqlite3FuncDefInsert(FuncDefHash*, FuncDef*);
FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,int,u8,int);
void sqlite3RegisterBuiltinFunctions(sqlite3*);
void sqlite3RegisterDateTimeFunctions(sqlite3*);
void sqlite3RegisterGlobalFunctions(void);
int sqlite3GetBuiltinFunction(const char *, int, FuncDef **);
#ifdef SQLITE_DEBUG
int sqlite3SafetyOn(sqlite3*);
@@ -2268,6 +2282,7 @@ void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8);
#ifndef SQLITE_AMALGAMATION
extern const unsigned char sqlite3UpperToLower[];
extern struct Sqlite3Config sqlite3Config;
extern FuncDefHash sqlite3FuncBuiltins;
#endif
void sqlite3RootPageMoved(Db*, int, int);
void sqlite3Reindex(Parse*, Token*, Token*);