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Added the %fallback directive to the lemon parser generator and used this

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in the parser to make the parse tables much smaller.  This reduced the size
of the library by 15K. (CVS 605)

FossilOrigin-Name: 7ac5bd293cbb2bf252f31f1571f7efac7e77280a
This commit is contained in:
drh
2002-06-06 18:54:39 +00:00
parent bd790ee395
commit 0bd1f4ea5a
8 changed files with 227 additions and 77 deletions
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32
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.119 2002/06/02 16:09:02 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.120 2002/06/06 18:54:41 drh Exp $
*/
#include "sqlite.h"
#include "hash.h"
@@ -30,6 +30,32 @@
#define MAX_PAGES 2000
#define TEMP_PAGES 500
/*
** If the following macro is set to 1, then NULL values are considered
** distinct for the SELECT DISTINCT statement and for UNION or EXCEPT
** compound queries. No other SQL database engine (among those tested)
** works this way except for OCELOT. But the SQL92 spec implies that
** this is how things should work.
**
** If the following macro is set to 0, then NULLs are indistinct for
** SELECT DISTINCT and for UNION.
*/
#define NULL_ALWAYS_DISTINCT 0
/*
** If the following macro is set to 1, then NULL values are considered
** distinct when determining whether or not two entries are the same
** in a UNIQUE index. This is the way PostgreSQL, Oracle, DB2, MySQL,
** OCELOT, and Firebird all work. The SQL92 spec explicitly says this
** is the way things are suppose to work.
**
** If the following macro is set to 0, the NULLs are indistinct for
** a UNIQUE index. In this mode, you can only have a single NULL entry
** for a column declared UNIQUE. This is the way Informix and SQL Server
** work.
*/
#define NULL_DISTINCT_FOR_UNIQUE 1
/*
** Integers of known sizes. These typedefs might change for architectures
** where the sizes very. Preprocessor macros are available so that the
@@ -214,7 +240,7 @@ struct sqlite {
** points to a linked list of these structures.
*/
struct FuncDef {
void (*xFunc)(sqlite_func*,int,const char**); /* Regular function */
void (*xFunc)(sqlite_func*,int,const char**); /* Regular function */
void (*xStep)(sqlite_func*,int,const char**); /* Aggregate function step */
void (*xFinalize)(sqlite_func*); /* Aggregate function finializer */
int nArg; /* Number of arguments */
@@ -284,7 +310,7 @@ struct Table {
/*
** SQLite supports 5 different ways to resolve a contraint
** error. ROLLBACK processing means that a constraint violation
** causes the operation in proces to fail and for the current transaction
** causes the operation in process to fail and for the current transaction
** to be rolled back. ABORT processing means the operation in process
** fails and any prior changes from that one operation are backed out,
** but the transaction is not rolled back. FAIL processing means that