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This patch contains the beginnings of the data-typing infrastructure.

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The new build-in TypeOf() function is added.  New opcodes for doing
pure text comparisons are added.  Most changes are disabled pending
the 2.6.0 release. (CVS 632)

FossilOrigin-Name: cbbc858d973c2d515c6a2464981316549a241b73
This commit is contained in:
drh
2002-06-20 11:36:48 +00:00
parent c926afbc2d
commit c9b84a1fb1
10 changed files with 497 additions and 85 deletions
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17
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.126 2002/06/19 14:27:05 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.127 2002/06/20 11:36:50 drh Exp $
*/
#include "sqlite.h"
#include "hash.h"
@@ -176,7 +176,18 @@ typedef struct TriggerStep TriggerStep;
typedef struct TriggerStack TriggerStack;
/*
** Each database is an instance of the following structure
** Each database is an instance of the following structure.
**
** The sqlite.file_format is initialized by the database file
** and helps determines how the data in the database file is
** represented. This field allows newer versions of the library
** to read and write older databases. The various file formats
** are as follows:
**
** file_format==1 Version 2.1.0.
** file_format==2 Version 2.2.0. Add support for INTEGER PRIMARY KEY.
** file_format==3 Version 2.6.0. Add support for separate numeric and
** text datatypes.
*/
struct sqlite {
Btree *pBe; /* The B*Tree backend */
@@ -244,6 +255,7 @@ struct FuncDef {
void (*xStep)(sqlite_func*,int,const char**); /* Aggregate function step */
void (*xFinalize)(sqlite_func*); /* Aggregate function finializer */
int nArg; /* Number of arguments */
int dataType; /* Datatype of the result */
void *pUserData; /* User data parameter */
FuncDef *pNext; /* Next function with same name */
};
@@ -876,6 +888,7 @@ int sqliteGlobCompare(const unsigned char*,const unsigned char*);
int sqliteLikeCompare(const unsigned char*,const unsigned char*);
char *sqliteTableNameFromToken(Token*);
int sqliteExprCheck(Parse*, Expr*, int, int*);
int sqliteExprType(Expr*);
int sqliteExprCompare(Expr*, Expr*);
int sqliteFuncId(Token*);
int sqliteExprResolveIds(Parse*, int, SrcList*, ExprList*, Expr*);