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Merge all of the latest trunk changes into the sessions branch.

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FossilOrigin-Name: a9bcb432f58b96f079a73c456efd4851c582221e
This commit is contained in:
drh
2012-01-05 13:02:36 +00:00
parent f004e1d69e e0711b47b1
commit 54cced185c
116 changed files with 6362 additions and 1967 deletions
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90
src/sqliteInt.h
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@@ -125,6 +125,14 @@
#endif
#endif
/*
** Powersafe overwrite is on by default. But can be turned off using
** the -DSQLITE_POWERSAFE_OVERWRITE=0 command-line option.
*/
#ifndef SQLITE_POWERSAFE_OVERWRITE
# define SQLITE_POWERSAFE_OVERWRITE 1
#endif
/*
** The SQLITE_DEFAULT_MEMSTATUS macro must be defined as either 0 or 1.
** It determines whether or not the features related to
@@ -346,7 +354,7 @@
*/
#define SQLITE_MAX_FILE_FORMAT 4
#ifndef SQLITE_DEFAULT_FILE_FORMAT
# define SQLITE_DEFAULT_FILE_FORMAT 1
# define SQLITE_DEFAULT_FILE_FORMAT 4
#endif
/*
@@ -1152,20 +1160,11 @@ struct Column {
struct CollSeq {
char *zName; /* Name of the collating sequence, UTF-8 encoded */
u8 enc; /* Text encoding handled by xCmp() */
u8 type; /* One of the SQLITE_COLL_... values below */
void *pUser; /* First argument to xCmp() */
int (*xCmp)(void*,int, const void*, int, const void*);
void (*xDel)(void*); /* Destructor for pUser */
};
/*
** Allowed values of CollSeq.type:
*/
#define SQLITE_COLL_BINARY 1 /* The default memcmp() collating sequence */
#define SQLITE_COLL_NOCASE 2 /* The built-in NOCASE collating sequence */
#define SQLITE_COLL_REVERSE 3 /* The built-in REVERSE collating sequence */
#define SQLITE_COLL_USER 0 /* Any other user-defined collating sequence */
/*
** A sort order can be either ASC or DESC.
*/
@@ -1451,7 +1450,7 @@ struct KeyInfo {
struct UnpackedRecord {
KeyInfo *pKeyInfo; /* Collation and sort-order information */
u16 nField; /* Number of entries in apMem[] */
u16 flags; /* Boolean settings. UNPACKED_... below */
u8 flags; /* Boolean settings. UNPACKED_... below */
i64 rowid; /* Used by UNPACKED_PREFIX_SEARCH */
Mem *aMem; /* Values */
};
@@ -1459,12 +1458,9 @@ struct UnpackedRecord {
/*
** Allowed values of UnpackedRecord.flags
*/
#define UNPACKED_NEED_FREE 0x0001 /* Memory is from sqlite3Malloc() */
#define UNPACKED_NEED_DESTROY 0x0002 /* apMem[]s should all be destroyed */
#define UNPACKED_IGNORE_ROWID 0x0004 /* Ignore trailing rowid on key1 */
#define UNPACKED_INCRKEY 0x0008 /* Make this key an epsilon larger */
#define UNPACKED_PREFIX_MATCH 0x0010 /* A prefix match is considered OK */
#define UNPACKED_PREFIX_SEARCH 0x0020 /* A prefix match is considered OK */
#define UNPACKED_INCRKEY 0x01 /* Make this key an epsilon larger */
#define UNPACKED_PREFIX_MATCH 0x02 /* A prefix match is considered OK */
#define UNPACKED_PREFIX_SEARCH 0x04 /* Ignore final (rowid) field */
/*
** Each SQL index is represented in memory by an
@@ -1727,10 +1723,10 @@ struct Expr {
#define EP_FixedDest 0x0200 /* Result needed in a specific register */
#define EP_IntValue 0x0400 /* Integer value contained in u.iValue */
#define EP_xIsSelect 0x0800 /* x.pSelect is valid (otherwise x.pList is) */
#define EP_Reduced 0x1000 /* Expr struct is EXPR_REDUCEDSIZE bytes only */
#define EP_TokenOnly 0x2000 /* Expr struct is EXPR_TOKENONLYSIZE bytes only */
#define EP_Static 0x4000 /* Held in memory not obtained from malloc() */
#define EP_Hint 0x1000 /* Optimizer hint. Not required for correctness */
#define EP_Reduced 0x2000 /* Expr struct is EXPR_REDUCEDSIZE bytes only */
#define EP_TokenOnly 0x4000 /* Expr struct is EXPR_TOKENONLYSIZE bytes only */
#define EP_Static 0x8000 /* Held in memory not obtained from malloc() */
/*
** The following are the meanings of bits in the Expr.flags2 field.
@@ -1792,7 +1788,7 @@ struct ExprList {
char *zSpan; /* Original text of the expression */
u8 sortOrder; /* 1 for DESC or 0 for ASC */
u8 done; /* A flag to indicate when processing is finished */
u16 iCol; /* For ORDER BY, column number in result set */
u16 iOrderByCol; /* For ORDER BY, column number in result set */
u16 iAlias; /* Index into Parse.aAlias[] for zName */
} *a; /* One entry for each expression */
};
@@ -2092,13 +2088,13 @@ struct Select {
** Allowed values for Select.selFlags. The "SF" prefix stands for
** "Select Flag".
*/
#define SF_Distinct 0x0001 /* Output should be DISTINCT */
#define SF_Resolved 0x0002 /* Identifiers have been resolved */
#define SF_Aggregate 0x0004 /* Contains aggregate functions */
#define SF_UsesEphemeral 0x0008 /* Uses the OpenEphemeral opcode */
#define SF_Expanded 0x0010 /* sqlite3SelectExpand() called on this */
#define SF_HasTypeInfo 0x0020 /* FROM subqueries have Table metadata */
#define SF_UseSorter 0x0040 /* Sort using a sorter */
#define SF_Distinct 0x01 /* Output should be DISTINCT */
#define SF_Resolved 0x02 /* Identifiers have been resolved */
#define SF_Aggregate 0x04 /* Contains aggregate functions */
#define SF_UsesEphemeral 0x08 /* Uses the OpenEphemeral opcode */
#define SF_Expanded 0x10 /* sqlite3SelectExpand() called on this */
#define SF_HasTypeInfo 0x20 /* FROM subqueries have Table metadata */
#define SF_UseSorter 0x40 /* Sort using a sorter */
/*
@@ -2213,10 +2209,8 @@ struct Parse {
char *zErrMsg; /* An error message */
Vdbe *pVdbe; /* An engine for executing database bytecode */
u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
u8 nameClash; /* A permanent table name clashes with temp table name */
u8 checkSchema; /* Causes schema cookie check after an error */
u8 nested; /* Number of nested calls to the parser/code generator */
u8 parseError; /* True after a parsing error. Ticket #1794 */
u8 nTempReg; /* Number of temporary registers in aTempReg[] */
u8 nTempInUse; /* Number of aTempReg[] currently checked out */
int aTempReg[8]; /* Holding area for temporary registers */
@@ -2226,11 +2220,12 @@ struct Parse {
int nTab; /* Number of previously allocated VDBE cursors */
int nMem; /* Number of memory cells used so far */
int nSet; /* Number of sets used so far */
int nOnce; /* Number of OP_Once instructions so far */
int ckBase; /* Base register of data during check constraints */
int iCacheLevel; /* ColCache valid when aColCache[].iLevel<=iCacheLevel */
int iCacheCnt; /* Counter used to generate aColCache[].lru values */
u8 nColCache; /* Number of entries in the column cache */
u8 iColCache; /* Next entry of the cache to replace */
u8 nColCache; /* Number of entries in aColCache[] */
u8 iColCache; /* Next entry in aColCache[] to replace */
struct yColCache {
int iTable; /* Table cursor number */
int iColumn; /* Table column number */
@@ -2272,7 +2267,6 @@ struct Parse {
char **azVar; /* Pointers to names of parameters */
Vdbe *pReprepare; /* VM being reprepared (sqlite3Reprepare()) */
int nAlias; /* Number of aliased result set columns */
int nAliasAlloc; /* Number of allocated slots for aAlias[] */
int *aAlias; /* Register used to hold aliased result */
u8 explain; /* True if the EXPLAIN flag is found on the query */
Token sNameToken; /* Token with unqualified schema object name */
@@ -2468,7 +2462,7 @@ struct Sqlite3Config {
int nLookaside; /* Default lookaside buffer count */
sqlite3_mem_methods m; /* Low-level memory allocation interface */
sqlite3_mutex_methods mutex; /* Low-level mutex interface */
sqlite3_pcache_methods pcache; /* Low-level page-cache interface */
sqlite3_pcache_methods2 pcache2; /* Low-level page-cache interface */
void *pHeap; /* Heap storage space */
int nHeap; /* Size of pHeap[] */
int mnReq, mxReq; /* Min and max heap requests sizes */
@@ -2674,6 +2668,29 @@ char *sqlite3MAppendf(sqlite3*,char*,const char*,...);
#if defined(SQLITE_TEST)
void *sqlite3TestTextToPtr(const char*);
#endif
/* Output formatting for SQLITE_TESTCTRL_EXPLAIN */
#if defined(SQLITE_ENABLE_TREE_EXPLAIN)
void sqlite3ExplainBegin(Vdbe*);
void sqlite3ExplainPrintf(Vdbe*, const char*, ...);
void sqlite3ExplainNL(Vdbe*);
void sqlite3ExplainPush(Vdbe*);
void sqlite3ExplainPop(Vdbe*);
void sqlite3ExplainFinish(Vdbe*);
void sqlite3ExplainSelect(Vdbe*, Select*);
void sqlite3ExplainExpr(Vdbe*, Expr*);
void sqlite3ExplainExprList(Vdbe*, ExprList*);
const char *sqlite3VdbeExplanation(Vdbe*);
#else
# define sqlite3ExplainBegin(X)
# define sqlite3ExplainSelect(A,B)
# define sqlite3ExplainExpr(A,B)
# define sqlite3ExplainExprList(A,B)
# define sqlite3ExplainFinish(X)
# define sqlite3VdbeExplanation(X) 0
#endif
void sqlite3SetString(char **, sqlite3*, const char*, ...);
void sqlite3ErrorMsg(Parse*, const char*, ...);
int sqlite3Dequote(char*);
@@ -2684,6 +2701,7 @@ int sqlite3GetTempReg(Parse*);
void sqlite3ReleaseTempReg(Parse*,int);
int sqlite3GetTempRange(Parse*,int);
void sqlite3ReleaseTempRange(Parse*,int,int);
void sqlite3ClearTempRegCache(Parse*);
Expr *sqlite3ExprAlloc(sqlite3*,int,const Token*,int);
Expr *sqlite3Expr(sqlite3*,int,const char*);
void sqlite3ExprAttachSubtrees(sqlite3*,Expr*,Expr*,Expr*);
@@ -2715,6 +2733,7 @@ void sqlite3AddCollateType(Parse*, Token*);
void sqlite3EndTable(Parse*,Token*,Token*,Select*);
int sqlite3ParseUri(const char*,const char*,unsigned int*,
sqlite3_vfs**,char**,char **);
int sqlite3CodeOnce(Parse *);
Bitvec *sqlite3BitvecCreate(u32);
int sqlite3BitvecTest(Bitvec*, u32);
@@ -3053,6 +3072,7 @@ int sqlite3OpenTempDatabase(Parse *);
void sqlite3StrAccumInit(StrAccum*, char*, int, int);
void sqlite3StrAccumAppend(StrAccum*,const char*,int);
void sqlite3AppendSpace(StrAccum*,int);
char *sqlite3StrAccumFinish(StrAccum*);
void sqlite3StrAccumReset(StrAccum*);
void sqlite3SelectDestInit(SelectDest*,int,int);