1 /* 2 ** 2003 September 6 3 ** 4 ** The author disclaims copyright to this source code. In place of 5 ** a legal notice, here is a blessing: 6 ** 7 ** May you do good and not evil. 8 ** May you find forgiveness for yourself and forgive others. 9 ** May you share freely, never taking more than you give. 10 ** 11 ************************************************************************* 12 ** This is the header file for information that is private to the 13 ** VDBE. This information used to all be at the top of the single 14 ** source code file "vdbe.c". When that file became too big (over 15 ** 6000 lines long) it was split up into several smaller files and 16 ** this header information was factored out. 17 */ 18 #ifndef SQLITE_VDBEINT_H 19 #define SQLITE_VDBEINT_H 20 21 /* 22 ** The maximum number of times that a statement will try to reparse 23 ** itself before giving up and returning SQLITE_SCHEMA. 24 */ 25 #ifndef SQLITE_MAX_SCHEMA_RETRY 26 # define SQLITE_MAX_SCHEMA_RETRY 50 27 #endif 28 29 /* 30 ** VDBE_DISPLAY_P4 is true or false depending on whether or not the 31 ** "explain" P4 display logic is enabled. 32 */ 33 #if !defined(SQLITE_OMIT_EXPLAIN) || !defined(NDEBUG) \ 34 || defined(VDBE_PROFILE) || defined(SQLITE_DEBUG) 35 # define VDBE_DISPLAY_P4 1 36 #else 37 # define VDBE_DISPLAY_P4 0 38 #endif 39 40 /* 41 ** SQL is translated into a sequence of instructions to be 42 ** executed by a virtual machine. Each instruction is an instance 43 ** of the following structure. 44 */ 45 typedef struct VdbeOp Op; 46 47 /* 48 ** Boolean values 49 */ 50 typedef unsigned Bool; 51 52 /* Opaque type used by code in vdbesort.c */ 53 typedef struct VdbeSorter VdbeSorter; 54 55 /* Elements of the linked list at Vdbe.pAuxData */ 56 typedef struct AuxData AuxData; 57 58 /* Types of VDBE cursors */ 59 #define CURTYPE_BTREE 0 60 #define CURTYPE_SORTER 1 61 #define CURTYPE_VTAB 2 62 #define CURTYPE_PSEUDO 3 63 64 /* 65 ** A VdbeCursor is an superclass (a wrapper) for various cursor objects: 66 ** 67 ** * A b-tree cursor 68 ** - In the main database or in an ephemeral database 69 ** - On either an index or a table 70 ** * A sorter 71 ** * A virtual table 72 ** * A one-row "pseudotable" stored in a single register 73 */ 74 typedef struct VdbeCursor VdbeCursor; 75 struct VdbeCursor { 76 u8 eCurType; /* One of the CURTYPE_* values above */ 77 i8 iDb; /* Index of cursor database in db->aDb[] (or -1) */ 78 u8 nullRow; /* True if pointing to a row with no data */ 79 u8 deferredMoveto; /* A call to sqlite3BtreeMoveto() is needed */ 80 u8 isTable; /* True for rowid tables. False for indexes */ 81 #ifdef SQLITE_DEBUG 82 u8 seekOp; /* Most recent seek operation on this cursor */ 83 u8 wrFlag; /* The wrFlag argument to sqlite3BtreeCursor() */ 84 #endif 85 Bool isEphemeral:1; /* True for an ephemeral table */ 86 Bool useRandomRowid:1; /* Generate new record numbers semi-randomly */ 87 Bool isOrdered:1; /* True if the table is not BTREE_UNORDERED */ 88 Bool seekHit:1; /* See the OP_SeekHit and OP_IfNoHope opcodes */ 89 Btree *pBtx; /* Separate file holding temporary table */ 90 i64 seqCount; /* Sequence counter */ 91 int *aAltMap; /* Mapping from table to index column numbers */ 92 93 /* Cached OP_Column parse information is only valid if cacheStatus matches 94 ** Vdbe.cacheCtr. Vdbe.cacheCtr will never take on the value of 95 ** CACHE_STALE (0) and so setting cacheStatus=CACHE_STALE guarantees that 96 ** the cache is out of date. */ 97 u32 cacheStatus; /* Cache is valid if this matches Vdbe.cacheCtr */ 98 int seekResult; /* Result of previous sqlite3BtreeMoveto() or 0 99 ** if there have been no prior seeks on the cursor. */ 100 /* seekResult does not distinguish between "no seeks have ever occurred 101 ** on this cursor" and "the most recent seek was an exact match". 102 ** For CURTYPE_PSEUDO, seekResult is the register holding the record */ 103 104 /* When a new VdbeCursor is allocated, only the fields above are zeroed. 105 ** The fields that follow are uninitialized, and must be individually 106 ** initialized prior to first use. */ 107 VdbeCursor *pAltCursor; /* Associated index cursor from which to read */ 108 union { 109 BtCursor *pCursor; /* CURTYPE_BTREE or _PSEUDO. Btree cursor */ 110 sqlite3_vtab_cursor *pVCur; /* CURTYPE_VTAB. Vtab cursor */ 111 VdbeSorter *pSorter; /* CURTYPE_SORTER. Sorter object */ 112 } uc; 113 KeyInfo *pKeyInfo; /* Info about index keys needed by index cursors */ 114 u32 iHdrOffset; /* Offset to next unparsed byte of the header */ 115 Pgno pgnoRoot; /* Root page of the open btree cursor */ 116 i16 nField; /* Number of fields in the header */ 117 u16 nHdrParsed; /* Number of header fields parsed so far */ 118 i64 movetoTarget; /* Argument to the deferred sqlite3BtreeMoveto() */ 119 u32 *aOffset; /* Pointer to aType[nField] */ 120 const u8 *aRow; /* Data for the current row, if all on one page */ 121 u32 payloadSize; /* Total number of bytes in the record */ 122 u32 szRow; /* Byte available in aRow */ 123 #ifdef SQLITE_ENABLE_COLUMN_USED_MASK 124 u64 maskUsed; /* Mask of columns used by this cursor */ 125 #endif 126 127 /* 2*nField extra array elements allocated for aType[], beyond the one 128 ** static element declared in the structure. nField total array slots for 129 ** aType[] and nField+1 array slots for aOffset[] */ 130 u32 aType[1]; /* Type values record decode. MUST BE LAST */ 131 }; 132 133 134 /* 135 ** A value for VdbeCursor.cacheStatus that means the cache is always invalid. 136 */ 137 #define CACHE_STALE 0 138 139 /* 140 ** When a sub-program is executed (OP_Program), a structure of this type 141 ** is allocated to store the current value of the program counter, as 142 ** well as the current memory cell array and various other frame specific 143 ** values stored in the Vdbe struct. When the sub-program is finished, 144 ** these values are copied back to the Vdbe from the VdbeFrame structure, 145 ** restoring the state of the VM to as it was before the sub-program 146 ** began executing. 147 ** 148 ** The memory for a VdbeFrame object is allocated and managed by a memory 149 ** cell in the parent (calling) frame. When the memory cell is deleted or 150 ** overwritten, the VdbeFrame object is not freed immediately. Instead, it 151 ** is linked into the Vdbe.pDelFrame list. The contents of the Vdbe.pDelFrame 152 ** list is deleted when the VM is reset in VdbeHalt(). The reason for doing 153 ** this instead of deleting the VdbeFrame immediately is to avoid recursive 154 ** calls to sqlite3VdbeMemRelease() when the memory cells belonging to the 155 ** child frame are released. 156 ** 157 ** The currently executing frame is stored in Vdbe.pFrame. Vdbe.pFrame is 158 ** set to NULL if the currently executing frame is the main program. 159 */ 160 typedef struct VdbeFrame VdbeFrame; 161 struct VdbeFrame { 162 Vdbe *v; /* VM this frame belongs to */ 163 VdbeFrame *pParent; /* Parent of this frame, or NULL if parent is main */ 164 Op *aOp; /* Program instructions for parent frame */ 165 i64 *anExec; /* Event counters from parent frame */ 166 Mem *aMem; /* Array of memory cells for parent frame */ 167 VdbeCursor **apCsr; /* Array of Vdbe cursors for parent frame */ 168 u8 *aOnce; /* Bitmask used by OP_Once */ 169 void *token; /* Copy of SubProgram.token */ 170 i64 lastRowid; /* Last insert rowid (sqlite3.lastRowid) */ 171 AuxData *pAuxData; /* Linked list of auxdata allocations */ 172 int nCursor; /* Number of entries in apCsr */ 173 int pc; /* Program Counter in parent (calling) frame */ 174 int nOp; /* Size of aOp array */ 175 int nMem; /* Number of entries in aMem */ 176 int nChildMem; /* Number of memory cells for child frame */ 177 int nChildCsr; /* Number of cursors for child frame */ 178 int nChange; /* Statement changes (Vdbe.nChange) */ 179 int nDbChange; /* Value of db->nChange */ 180 }; 181 182 #define VdbeFrameMem(p) ((Mem *)&((u8 *)p)[ROUND8(sizeof(VdbeFrame))]) 183 184 /* 185 ** Internally, the vdbe manipulates nearly all SQL values as Mem 186 ** structures. Each Mem struct may cache multiple representations (string, 187 ** integer etc.) of the same value. 188 */ 189 struct sqlite3_value { 190 union MemValue { 191 double r; /* Real value used when MEM_Real is set in flags */ 192 i64 i; /* Integer value used when MEM_Int is set in flags */ 193 int nZero; /* Extra zero bytes when MEM_Zero and MEM_Blob set */ 194 const char *zPType; /* Pointer type when MEM_Term|MEM_Subtype|MEM_Null */ 195 FuncDef *pDef; /* Used only when flags==MEM_Agg */ 196 RowSet *pRowSet; /* Used only when flags==MEM_RowSet */ 197 VdbeFrame *pFrame; /* Used when flags==MEM_Frame */ 198 } u; 199 u16 flags; /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */ 200 u8 enc; /* SQLITE_UTF8, SQLITE_UTF16BE, SQLITE_UTF16LE */ 201 u8 eSubtype; /* Subtype for this value */ 202 int n; /* Number of characters in string value, excluding '\0' */ 203 char *z; /* String or BLOB value */ 204 /* ShallowCopy only needs to copy the information above */ 205 char *zMalloc; /* Space to hold MEM_Str or MEM_Blob if szMalloc>0 */ 206 int szMalloc; /* Size of the zMalloc allocation */ 207 u32 uTemp; /* Transient storage for serial_type in OP_MakeRecord */ 208 sqlite3 *db; /* The associated database connection */ 209 void (*xDel)(void*);/* Destructor for Mem.z - only valid if MEM_Dyn */ 210 #ifdef SQLITE_DEBUG 211 Mem *pScopyFrom; /* This Mem is a shallow copy of pScopyFrom */ 212 u16 mScopyFlags; /* flags value immediately after the shallow copy */ 213 #endif 214 #ifdef SQLITE_DEBUG_COLUMNCACHE 215 u32 iTabColHash; /* Hash of table.column that is origin of this value */ 216 u32 iPadding; /* sqlite3_value objects must be 8-byte aligned */ 217 #endif 218 }; 219 220 /* 221 ** Size of struct Mem not including the Mem.zMalloc member or anything that 222 ** follows. 223 */ 224 #define MEMCELLSIZE offsetof(Mem,zMalloc) 225 226 /* One or more of the following flags are set to indicate the validOK 227 ** representations of the value stored in the Mem struct. 228 ** 229 ** If the MEM_Null flag is set, then the value is an SQL NULL value. 230 ** For a pointer type created using sqlite3_bind_pointer() or 231 ** sqlite3_result_pointer() the MEM_Term and MEM_Subtype flags are also set. 232 ** 233 ** If the MEM_Str flag is set then Mem.z points at a string representation. 234 ** Usually this is encoded in the same unicode encoding as the main 235 ** database (see below for exceptions). If the MEM_Term flag is also 236 ** set, then the string is nul terminated. The MEM_Int and MEM_Real 237 ** flags may coexist with the MEM_Str flag. 238 */ 239 #define MEM_Null 0x0001 /* Value is NULL (or a pointer) */ 240 #define MEM_Str 0x0002 /* Value is a string */ 241 #define MEM_Int 0x0004 /* Value is an integer */ 242 #define MEM_Real 0x0008 /* Value is a real number */ 243 #define MEM_Blob 0x0010 /* Value is a BLOB */ 244 #define MEM_AffMask 0x001f /* Mask of affinity bits */ 245 #define MEM_RowSet 0x0020 /* Value is a RowSet object */ 246 #define MEM_Frame 0x0040 /* Value is a VdbeFrame object */ 247 #define MEM_Undefined 0x0080 /* Value is undefined */ 248 #define MEM_Cleared 0x0100 /* NULL set by OP_Null, not from data */ 249 #define MEM_TypeMask 0xc1ff /* Mask of type bits */ 250 251 252 /* Whenever Mem contains a valid string or blob representation, one of 253 ** the following flags must be set to determine the memory management 254 ** policy for Mem.z. The MEM_Term flag tells us whether or not the 255 ** string is \000 or \u0000 terminated 256 */ 257 #define MEM_Term 0x0200 /* String in Mem.z is zero terminated */ 258 #define MEM_Dyn 0x0400 /* Need to call Mem.xDel() on Mem.z */ 259 #define MEM_Static 0x0800 /* Mem.z points to a static string */ 260 #define MEM_Ephem 0x1000 /* Mem.z points to an ephemeral string */ 261 #define MEM_Agg 0x2000 /* Mem.z points to an agg function context */ 262 #define MEM_Zero 0x4000 /* Mem.i contains count of 0s appended to blob */ 263 #define MEM_Subtype 0x8000 /* Mem.eSubtype is valid */ 264 #ifdef SQLITE_OMIT_INCRBLOB 265 #undef MEM_Zero 266 #define MEM_Zero 0x0000 267 #endif 268 269 /* Return TRUE if Mem X contains dynamically allocated content - anything 270 ** that needs to be deallocated to avoid a leak. 271 */ 272 #define VdbeMemDynamic(X) \ 273 (((X)->flags&(MEM_Agg|MEM_Dyn|MEM_RowSet|MEM_Frame))!=0) 274 275 /* 276 ** Clear any existing type flags from a Mem and replace them with f 277 */ 278 #define MemSetTypeFlag(p, f) \ 279 ((p)->flags = ((p)->flags&~(MEM_TypeMask|MEM_Zero))|f) 280 281 /* 282 ** Return true if a memory cell is not marked as invalid. This macro 283 ** is for use inside assert() statements only. 284 */ 285 #ifdef SQLITE_DEBUG 286 #define memIsValid(M) ((M)->flags & MEM_Undefined)==0 287 #endif 288 289 /* 290 ** Each auxiliary data pointer stored by a user defined function 291 ** implementation calling sqlite3_set_auxdata() is stored in an instance 292 ** of this structure. All such structures associated with a single VM 293 ** are stored in a linked list headed at Vdbe.pAuxData. All are destroyed 294 ** when the VM is halted (if not before). 295 */ 296 struct AuxData { 297 int iAuxOp; /* Instruction number of OP_Function opcode */ 298 int iAuxArg; /* Index of function argument. */ 299 void *pAux; /* Aux data pointer */ 300 void (*xDeleteAux)(void*); /* Destructor for the aux data */ 301 AuxData *pNextAux; /* Next element in list */ 302 }; 303 304 /* 305 ** The "context" argument for an installable function. A pointer to an 306 ** instance of this structure is the first argument to the routines used 307 ** implement the SQL functions. 308 ** 309 ** There is a typedef for this structure in sqlite.h. So all routines, 310 ** even the public interface to SQLite, can use a pointer to this structure. 311 ** But this file is the only place where the internal details of this 312 ** structure are known. 313 ** 314 ** This structure is defined inside of vdbeInt.h because it uses substructures 315 ** (Mem) which are only defined there. 316 */ 317 struct sqlite3_context { 318 Mem *pOut; /* The return value is stored here */ 319 FuncDef *pFunc; /* Pointer to function information */ 320 Mem *pMem; /* Memory cell used to store aggregate context */ 321 Vdbe *pVdbe; /* The VM that owns this context */ 322 int iOp; /* Instruction number of OP_Function */ 323 int isError; /* Error code returned by the function. */ 324 u8 skipFlag; /* Skip accumulator loading if true */ 325 u8 argc; /* Number of arguments */ 326 sqlite3_value *argv[1]; /* Argument set */ 327 }; 328 329 /* A bitfield type for use inside of structures. Always follow with :N where 330 ** N is the number of bits. 331 */ 332 typedef unsigned bft; /* Bit Field Type */ 333 334 typedef struct ScanStatus ScanStatus; 335 struct ScanStatus { 336 int addrExplain; /* OP_Explain for loop */ 337 int addrLoop; /* Address of "loops" counter */ 338 int addrVisit; /* Address of "rows visited" counter */ 339 int iSelectID; /* The "Select-ID" for this loop */ 340 LogEst nEst; /* Estimated output rows per loop */ 341 char *zName; /* Name of table or index */ 342 }; 343 344 /* 345 ** An instance of the virtual machine. This structure contains the complete 346 ** state of the virtual machine. 347 ** 348 ** The "sqlite3_stmt" structure pointer that is returned by sqlite3_prepare() 349 ** is really a pointer to an instance of this structure. 350 */ 351 struct Vdbe { 352 sqlite3 *db; /* The database connection that owns this statement */ 353 Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */ 354 Parse *pParse; /* Parsing context used to create this Vdbe */ 355 ynVar nVar; /* Number of entries in aVar[] */ 356 u32 magic; /* Magic number for sanity checking */ 357 int nMem; /* Number of memory locations currently allocated */ 358 int nCursor; /* Number of slots in apCsr[] */ 359 u32 cacheCtr; /* VdbeCursor row cache generation counter */ 360 int pc; /* The program counter */ 361 int rc; /* Value to return */ 362 int nChange; /* Number of db changes made since last reset */ 363 int iStatement; /* Statement number (or 0 if has not opened stmt) */ 364 i64 iCurrentTime; /* Value of julianday('now') for this statement */ 365 i64 nFkConstraint; /* Number of imm. FK constraints this VM */ 366 i64 nStmtDefCons; /* Number of def. constraints when stmt started */ 367 i64 nStmtDefImmCons; /* Number of def. imm constraints when stmt started */ 368 369 /* When allocating a new Vdbe object, all of the fields below should be 370 ** initialized to zero or NULL */ 371 372 Op *aOp; /* Space to hold the virtual machine's program */ 373 Mem *aMem; /* The memory locations */ 374 Mem **apArg; /* Arguments to currently executing user function */ 375 Mem *aColName; /* Column names to return */ 376 Mem *pResultSet; /* Pointer to an array of results */ 377 char *zErrMsg; /* Error message written here */ 378 VdbeCursor **apCsr; /* One element of this array for each open cursor */ 379 Mem *aVar; /* Values for the OP_Variable opcode. */ 380 VList *pVList; /* Name of variables */ 381 #ifndef SQLITE_OMIT_TRACE 382 i64 startTime; /* Time when query started - used for profiling */ 383 #endif 384 int nOp; /* Number of instructions in the program */ 385 #ifdef SQLITE_DEBUG 386 int rcApp; /* errcode set by sqlite3_result_error_code() */ 387 u32 nWrite; /* Number of write operations that have occurred */ 388 #endif 389 u16 nResColumn; /* Number of columns in one row of the result set */ 390 u8 errorAction; /* Recovery action to do in case of an error */ 391 u8 minWriteFileFormat; /* Minimum file format for writable database files */ 392 u8 prepFlags; /* SQLITE_PREPARE_* flags */ 393 bft expired:1; /* True if the VM needs to be recompiled */ 394 bft doingRerun:1; /* True if rerunning after an auto-reprepare */ 395 bft explain:2; /* True if EXPLAIN present on SQL command */ 396 bft changeCntOn:1; /* True to update the change-counter */ 397 bft runOnlyOnce:1; /* Automatically expire on reset */ 398 bft usesStmtJournal:1; /* True if uses a statement journal */ 399 bft readOnly:1; /* True for statements that do not write */ 400 bft bIsReader:1; /* True for statements that read */ 401 yDbMask btreeMask; /* Bitmask of db->aDb[] entries referenced */ 402 yDbMask lockMask; /* Subset of btreeMask that requires a lock */ 403 u32 aCounter[7]; /* Counters used by sqlite3_stmt_status() */ 404 char *zSql; /* Text of the SQL statement that generated this */ 405 void *pFree; /* Free this when deleting the vdbe */ 406 VdbeFrame *pFrame; /* Parent frame */ 407 VdbeFrame *pDelFrame; /* List of frame objects to free on VM reset */ 408 int nFrame; /* Number of frames in pFrame list */ 409 u32 expmask; /* Binding to these vars invalidates VM */ 410 SubProgram *pProgram; /* Linked list of all sub-programs used by VM */ 411 AuxData *pAuxData; /* Linked list of auxdata allocations */ 412 #ifdef SQLITE_ENABLE_STMT_SCANSTATUS 413 i64 *anExec; /* Number of times each op has been executed */ 414 int nScan; /* Entries in aScan[] */ 415 ScanStatus *aScan; /* Scan definitions for sqlite3_stmt_scanstatus() */ 416 #endif 417 }; 418 419 /* 420 ** The following are allowed values for Vdbe.magic 421 */ 422 #define VDBE_MAGIC_INIT 0x16bceaa5 /* Building a VDBE program */ 423 #define VDBE_MAGIC_RUN 0x2df20da3 /* VDBE is ready to execute */ 424 #define VDBE_MAGIC_HALT 0x319c2973 /* VDBE has completed execution */ 425 #define VDBE_MAGIC_RESET 0x48fa9f76 /* Reset and ready to run again */ 426 #define VDBE_MAGIC_DEAD 0x5606c3c8 /* The VDBE has been deallocated */ 427 428 /* 429 ** Structure used to store the context required by the 430 ** sqlite3_preupdate_*() API functions. 431 */ 432 struct PreUpdate { 433 Vdbe *v; 434 VdbeCursor *pCsr; /* Cursor to read old values from */ 435 int op; /* One of SQLITE_INSERT, UPDATE, DELETE */ 436 u8 *aRecord; /* old.* database record */ 437 KeyInfo keyinfo; 438 UnpackedRecord *pUnpacked; /* Unpacked version of aRecord[] */ 439 UnpackedRecord *pNewUnpacked; /* Unpacked version of new.* record */ 440 int iNewReg; /* Register for new.* values */ 441 i64 iKey1; /* First key value passed to hook */ 442 i64 iKey2; /* Second key value passed to hook */ 443 Mem *aNew; /* Array of new.* values */ 444 Table *pTab; /* Schema object being upated */ 445 Index *pPk; /* PK index if pTab is WITHOUT ROWID */ 446 }; 447 448 /* 449 ** Function prototypes 450 */ 451 void sqlite3VdbeError(Vdbe*, const char *, ...); 452 void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*); 453 void sqliteVdbePopStack(Vdbe*,int); 454 int sqlite3VdbeCursorMoveto(VdbeCursor**, int*); 455 int sqlite3VdbeCursorRestore(VdbeCursor*); 456 u32 sqlite3VdbeSerialTypeLen(u32); 457 u8 sqlite3VdbeOneByteSerialTypeLen(u8); 458 u32 sqlite3VdbeSerialType(Mem*, int, u32*); 459 u32 sqlite3VdbeSerialPut(unsigned char*, Mem*, u32); 460 u32 sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*); 461 void sqlite3VdbeDeleteAuxData(sqlite3*, AuxData**, int, int); 462 463 int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *); 464 int sqlite3VdbeIdxKeyCompare(sqlite3*,VdbeCursor*,UnpackedRecord*,int*); 465 int sqlite3VdbeIdxRowid(sqlite3*, BtCursor*, i64*); 466 int sqlite3VdbeExec(Vdbe*); 467 int sqlite3VdbeList(Vdbe*); 468 int sqlite3VdbeHalt(Vdbe*); 469 int sqlite3VdbeChangeEncoding(Mem *, int); 470 int sqlite3VdbeMemTooBig(Mem*); 471 int sqlite3VdbeMemCopy(Mem*, const Mem*); 472 void sqlite3VdbeMemShallowCopy(Mem*, const Mem*, int); 473 void sqlite3VdbeMemMove(Mem*, Mem*); 474 int sqlite3VdbeMemNulTerminate(Mem*); 475 int sqlite3VdbeMemSetStr(Mem*, const char*, int, u8, void(*)(void*)); 476 void sqlite3VdbeMemSetInt64(Mem*, i64); 477 #ifdef SQLITE_OMIT_FLOATING_POINT 478 # define sqlite3VdbeMemSetDouble sqlite3VdbeMemSetInt64 479 #else 480 void sqlite3VdbeMemSetDouble(Mem*, double); 481 #endif 482 void sqlite3VdbeMemSetPointer(Mem*, void*, const char*, void(*)(void*)); 483 void sqlite3VdbeMemInit(Mem*,sqlite3*,u16); 484 void sqlite3VdbeMemSetNull(Mem*); 485 void sqlite3VdbeMemSetZeroBlob(Mem*,int); 486 void sqlite3VdbeMemSetRowSet(Mem*); 487 int sqlite3VdbeMemMakeWriteable(Mem*); 488 int sqlite3VdbeMemStringify(Mem*, u8, u8); 489 i64 sqlite3VdbeIntValue(Mem*); 490 int sqlite3VdbeMemIntegerify(Mem*); 491 double sqlite3VdbeRealValue(Mem*); 492 int sqlite3VdbeBooleanValue(Mem*, int ifNull); 493 void sqlite3VdbeIntegerAffinity(Mem*); 494 int sqlite3VdbeMemRealify(Mem*); 495 int sqlite3VdbeMemNumerify(Mem*); 496 void sqlite3VdbeMemCast(Mem*,u8,u8); 497 int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,Mem*); 498 void sqlite3VdbeMemRelease(Mem *p); 499 int sqlite3VdbeMemFinalize(Mem*, FuncDef*); 500 #ifndef SQLITE_OMIT_WINDOWFUNC 501 int sqlite3VdbeMemAggValue(Mem*, Mem*, FuncDef*); 502 #endif 503 const char *sqlite3OpcodeName(int); 504 int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve); 505 int sqlite3VdbeMemClearAndResize(Mem *pMem, int n); 506 int sqlite3VdbeCloseStatement(Vdbe *, int); 507 void sqlite3VdbeFrameDelete(VdbeFrame*); 508 int sqlite3VdbeFrameRestore(VdbeFrame *); 509 #ifdef SQLITE_ENABLE_PREUPDATE_HOOK 510 void sqlite3VdbePreUpdateHook(Vdbe*,VdbeCursor*,int,const char*,Table*,i64,int); 511 #endif 512 int sqlite3VdbeTransferError(Vdbe *p); 513 514 int sqlite3VdbeSorterInit(sqlite3 *, int, VdbeCursor *); 515 void sqlite3VdbeSorterReset(sqlite3 *, VdbeSorter *); 516 void sqlite3VdbeSorterClose(sqlite3 *, VdbeCursor *); 517 int sqlite3VdbeSorterRowkey(const VdbeCursor *, Mem *); 518 int sqlite3VdbeSorterNext(sqlite3 *, const VdbeCursor *); 519 int sqlite3VdbeSorterRewind(const VdbeCursor *, int *); 520 int sqlite3VdbeSorterWrite(const VdbeCursor *, Mem *); 521 int sqlite3VdbeSorterCompare(const VdbeCursor *, Mem *, int, int *); 522 523 #ifdef SQLITE_DEBUG 524 void sqlite3VdbeIncrWriteCounter(Vdbe*, VdbeCursor*); 525 void sqlite3VdbeAssertAbortable(Vdbe*); 526 #else 527 # define sqlite3VdbeIncrWriteCounter(V,C) 528 # define sqlite3VdbeAssertAbortable(V) 529 #endif 530 531 #if !defined(SQLITE_OMIT_SHARED_CACHE) 532 void sqlite3VdbeEnter(Vdbe*); 533 #else 534 # define sqlite3VdbeEnter(X) 535 #endif 536 537 #if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0 538 void sqlite3VdbeLeave(Vdbe*); 539 #else 540 # define sqlite3VdbeLeave(X) 541 #endif 542 543 #ifdef SQLITE_DEBUG 544 void sqlite3VdbeMemAboutToChange(Vdbe*,Mem*); 545 int sqlite3VdbeCheckMemInvariants(Mem*); 546 #endif 547 548 #ifndef SQLITE_OMIT_FOREIGN_KEY 549 int sqlite3VdbeCheckFk(Vdbe *, int); 550 #else 551 # define sqlite3VdbeCheckFk(p,i) 0 552 #endif 553 554 #ifdef SQLITE_DEBUG 555 void sqlite3VdbePrintSql(Vdbe*); 556 void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf); 557 #endif 558 #ifndef SQLITE_OMIT_UTF16 559 int sqlite3VdbeMemTranslate(Mem*, u8); 560 int sqlite3VdbeMemHandleBom(Mem *pMem); 561 #endif 562 563 #ifndef SQLITE_OMIT_INCRBLOB 564 int sqlite3VdbeMemExpandBlob(Mem *); 565 #define ExpandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0) 566 #else 567 #define sqlite3VdbeMemExpandBlob(x) SQLITE_OK 568 #define ExpandBlob(P) SQLITE_OK 569 #endif 570 571 #endif /* !defined(SQLITE_VDBEINT_H) */ 572