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 || defined(SQLITE_ENABLE_BYTECODE_VTAB) 36 # define VDBE_DISPLAY_P4 1 37 #else 38 # define VDBE_DISPLAY_P4 0 39 #endif 40 41 /* 42 ** SQL is translated into a sequence of instructions to be 43 ** executed by a virtual machine. Each instruction is an instance 44 ** of the following structure. 45 */ 46 typedef struct VdbeOp Op; 47 48 /* 49 ** Boolean values 50 */ 51 typedef unsigned Bool; 52 53 /* Opaque type used by code in vdbesort.c */ 54 typedef struct VdbeSorter VdbeSorter; 55 56 /* Elements of the linked list at Vdbe.pAuxData */ 57 typedef struct AuxData AuxData; 58 59 /* Types of VDBE cursors */ 60 #define CURTYPE_BTREE 0 61 #define CURTYPE_SORTER 1 62 #define CURTYPE_VTAB 2 63 #define CURTYPE_PSEUDO 3 64 65 /* 66 ** A VdbeCursor is an superclass (a wrapper) for various cursor objects: 67 ** 68 ** * A b-tree cursor 69 ** - In the main database or in an ephemeral database 70 ** - On either an index or a table 71 ** * A sorter 72 ** * A virtual table 73 ** * A one-row "pseudotable" stored in a single register 74 */ 75 typedef struct VdbeCursor VdbeCursor; 76 struct VdbeCursor { 77 u8 eCurType; /* One of the CURTYPE_* values above */ 78 i8 iDb; /* Index of cursor database in db->aDb[] (or -1) */ 79 u8 nullRow; /* True if pointing to a row with no data */ 80 u8 deferredMoveto; /* A call to sqlite3BtreeMoveto() is needed */ 81 u8 isTable; /* True for rowid tables. False for indexes */ 82 #ifdef SQLITE_DEBUG 83 u8 seekOp; /* Most recent seek operation on this cursor */ 84 u8 wrFlag; /* The wrFlag argument to sqlite3BtreeCursor() */ 85 #endif 86 Bool isEphemeral:1; /* True for an ephemeral table */ 87 Bool useRandomRowid:1; /* Generate new record numbers semi-randomly */ 88 Bool isOrdered:1; /* True if the table is not BTREE_UNORDERED */ 89 u16 seekHit; /* See the OP_SeekHit and OP_IfNoHope opcodes */ 90 Btree *pBtx; /* Separate file holding temporary table */ 91 i64 seqCount; /* Sequence counter */ 92 u32 *aAltMap; /* Mapping from table to index column numbers */ 93 94 /* Cached OP_Column parse information is only valid if cacheStatus matches 95 ** Vdbe.cacheCtr. Vdbe.cacheCtr will never take on the value of 96 ** CACHE_STALE (0) and so setting cacheStatus=CACHE_STALE guarantees that 97 ** the cache is out of date. */ 98 u32 cacheStatus; /* Cache is valid if this matches Vdbe.cacheCtr */ 99 int seekResult; /* Result of previous sqlite3BtreeMoveto() or 0 100 ** if there have been no prior seeks on the cursor. */ 101 /* seekResult does not distinguish between "no seeks have ever occurred 102 ** on this cursor" and "the most recent seek was an exact match". 103 ** For CURTYPE_PSEUDO, seekResult is the register holding the record */ 104 105 /* When a new VdbeCursor is allocated, only the fields above are zeroed. 106 ** The fields that follow are uninitialized, and must be individually 107 ** initialized prior to first use. */ 108 VdbeCursor *pAltCursor; /* Associated index cursor from which to read */ 109 union { 110 BtCursor *pCursor; /* CURTYPE_BTREE or _PSEUDO. Btree cursor */ 111 sqlite3_vtab_cursor *pVCur; /* CURTYPE_VTAB. Vtab cursor */ 112 VdbeSorter *pSorter; /* CURTYPE_SORTER. Sorter object */ 113 } uc; 114 KeyInfo *pKeyInfo; /* Info about index keys needed by index cursors */ 115 u32 iHdrOffset; /* Offset to next unparsed byte of the header */ 116 Pgno pgnoRoot; /* Root page of the open btree cursor */ 117 i16 nField; /* Number of fields in the header */ 118 u16 nHdrParsed; /* Number of header fields parsed so far */ 119 i64 movetoTarget; /* Argument to the deferred sqlite3BtreeMoveto() */ 120 u32 *aOffset; /* Pointer to aType[nField] */ 121 const u8 *aRow; /* Data for the current row, if all on one page */ 122 u32 payloadSize; /* Total number of bytes in the record */ 123 u32 szRow; /* Byte available in aRow */ 124 #ifdef SQLITE_ENABLE_COLUMN_USED_MASK 125 u64 maskUsed; /* Mask of columns used by this cursor */ 126 #endif 127 128 /* 2*nField extra array elements allocated for aType[], beyond the one 129 ** static element declared in the structure. nField total array slots for 130 ** aType[] and nField+1 array slots for aOffset[] */ 131 u32 aType[1]; /* Type values record decode. MUST BE LAST */ 132 }; 133 134 135 /* 136 ** A value for VdbeCursor.cacheStatus that means the cache is always invalid. 137 */ 138 #define CACHE_STALE 0 139 140 /* 141 ** When a sub-program is executed (OP_Program), a structure of this type 142 ** is allocated to store the current value of the program counter, as 143 ** well as the current memory cell array and various other frame specific 144 ** values stored in the Vdbe struct. When the sub-program is finished, 145 ** these values are copied back to the Vdbe from the VdbeFrame structure, 146 ** restoring the state of the VM to as it was before the sub-program 147 ** began executing. 148 ** 149 ** The memory for a VdbeFrame object is allocated and managed by a memory 150 ** cell in the parent (calling) frame. When the memory cell is deleted or 151 ** overwritten, the VdbeFrame object is not freed immediately. Instead, it 152 ** is linked into the Vdbe.pDelFrame list. The contents of the Vdbe.pDelFrame 153 ** list is deleted when the VM is reset in VdbeHalt(). The reason for doing 154 ** this instead of deleting the VdbeFrame immediately is to avoid recursive 155 ** calls to sqlite3VdbeMemRelease() when the memory cells belonging to the 156 ** child frame are released. 157 ** 158 ** The currently executing frame is stored in Vdbe.pFrame. Vdbe.pFrame is 159 ** set to NULL if the currently executing frame is the main program. 160 */ 161 typedef struct VdbeFrame VdbeFrame; 162 struct VdbeFrame { 163 Vdbe *v; /* VM this frame belongs to */ 164 VdbeFrame *pParent; /* Parent of this frame, or NULL if parent is main */ 165 Op *aOp; /* Program instructions for parent frame */ 166 i64 *anExec; /* Event counters from parent frame */ 167 Mem *aMem; /* Array of memory cells for parent frame */ 168 VdbeCursor **apCsr; /* Array of Vdbe cursors for parent frame */ 169 u8 *aOnce; /* Bitmask used by OP_Once */ 170 void *token; /* Copy of SubProgram.token */ 171 i64 lastRowid; /* Last insert rowid (sqlite3.lastRowid) */ 172 AuxData *pAuxData; /* Linked list of auxdata allocations */ 173 #if SQLITE_DEBUG 174 u32 iFrameMagic; /* magic number for sanity checking */ 175 #endif 176 int nCursor; /* Number of entries in apCsr */ 177 int pc; /* Program Counter in parent (calling) frame */ 178 int nOp; /* Size of aOp array */ 179 int nMem; /* Number of entries in aMem */ 180 int nChildMem; /* Number of memory cells for child frame */ 181 int nChildCsr; /* Number of cursors for child frame */ 182 int nChange; /* Statement changes (Vdbe.nChange) */ 183 int nDbChange; /* Value of db->nChange */ 184 }; 185 186 /* Magic number for sanity checking on VdbeFrame objects */ 187 #define SQLITE_FRAME_MAGIC 0x879fb71e 188 189 /* 190 ** Return a pointer to the array of registers allocated for use 191 ** by a VdbeFrame. 192 */ 193 #define VdbeFrameMem(p) ((Mem *)&((u8 *)p)[ROUND8(sizeof(VdbeFrame))]) 194 195 /* 196 ** Internally, the vdbe manipulates nearly all SQL values as Mem 197 ** structures. Each Mem struct may cache multiple representations (string, 198 ** integer etc.) of the same value. 199 */ 200 struct sqlite3_value { 201 union MemValue { 202 double r; /* Real value used when MEM_Real is set in flags */ 203 i64 i; /* Integer value used when MEM_Int is set in flags */ 204 int nZero; /* Extra zero bytes when MEM_Zero and MEM_Blob set */ 205 const char *zPType; /* Pointer type when MEM_Term|MEM_Subtype|MEM_Null */ 206 FuncDef *pDef; /* Used only when flags==MEM_Agg */ 207 } u; 208 u16 flags; /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */ 209 u8 enc; /* SQLITE_UTF8, SQLITE_UTF16BE, SQLITE_UTF16LE */ 210 u8 eSubtype; /* Subtype for this value */ 211 int n; /* Number of characters in string value, excluding '\0' */ 212 char *z; /* String or BLOB value */ 213 /* ShallowCopy only needs to copy the information above */ 214 char *zMalloc; /* Space to hold MEM_Str or MEM_Blob if szMalloc>0 */ 215 int szMalloc; /* Size of the zMalloc allocation */ 216 u32 uTemp; /* Transient storage for serial_type in OP_MakeRecord */ 217 sqlite3 *db; /* The associated database connection */ 218 void (*xDel)(void*);/* Destructor for Mem.z - only valid if MEM_Dyn */ 219 #ifdef SQLITE_DEBUG 220 Mem *pScopyFrom; /* This Mem is a shallow copy of pScopyFrom */ 221 u16 mScopyFlags; /* flags value immediately after the shallow copy */ 222 #endif 223 }; 224 225 /* 226 ** Size of struct Mem not including the Mem.zMalloc member or anything that 227 ** follows. 228 */ 229 #define MEMCELLSIZE offsetof(Mem,zMalloc) 230 231 /* One or more of the following flags are set to indicate the validOK 232 ** representations of the value stored in the Mem struct. 233 ** 234 ** If the MEM_Null flag is set, then the value is an SQL NULL value. 235 ** For a pointer type created using sqlite3_bind_pointer() or 236 ** sqlite3_result_pointer() the MEM_Term and MEM_Subtype flags are also set. 237 ** 238 ** If the MEM_Str flag is set then Mem.z points at a string representation. 239 ** Usually this is encoded in the same unicode encoding as the main 240 ** database (see below for exceptions). If the MEM_Term flag is also 241 ** set, then the string is nul terminated. The MEM_Int and MEM_Real 242 ** flags may coexist with the MEM_Str flag. 243 */ 244 #define MEM_Null 0x0001 /* Value is NULL (or a pointer) */ 245 #define MEM_Str 0x0002 /* Value is a string */ 246 #define MEM_Int 0x0004 /* Value is an integer */ 247 #define MEM_Real 0x0008 /* Value is a real number */ 248 #define MEM_Blob 0x0010 /* Value is a BLOB */ 249 #define MEM_IntReal 0x0020 /* MEM_Int that stringifies like MEM_Real */ 250 #define MEM_AffMask 0x003f /* Mask of affinity bits */ 251 #define MEM_FromBind 0x0040 /* Value originates from sqlite3_bind() */ 252 #define MEM_Undefined 0x0080 /* Value is undefined */ 253 #define MEM_Cleared 0x0100 /* NULL set by OP_Null, not from data */ 254 #define MEM_TypeMask 0xc1bf /* Mask of type bits */ 255 256 257 /* Whenever Mem contains a valid string or blob representation, one of 258 ** the following flags must be set to determine the memory management 259 ** policy for Mem.z. The MEM_Term flag tells us whether or not the 260 ** string is \000 or \u0000 terminated 261 */ 262 #define MEM_Term 0x0200 /* String in Mem.z is zero terminated */ 263 #define MEM_Dyn 0x0400 /* Need to call Mem.xDel() on Mem.z */ 264 #define MEM_Static 0x0800 /* Mem.z points to a static string */ 265 #define MEM_Ephem 0x1000 /* Mem.z points to an ephemeral string */ 266 #define MEM_Agg 0x2000 /* Mem.z points to an agg function context */ 267 #define MEM_Zero 0x4000 /* Mem.i contains count of 0s appended to blob */ 268 #define MEM_Subtype 0x8000 /* Mem.eSubtype is valid */ 269 #ifdef SQLITE_OMIT_INCRBLOB 270 #undef MEM_Zero 271 #define MEM_Zero 0x0000 272 #endif 273 274 /* Return TRUE if Mem X contains dynamically allocated content - anything 275 ** that needs to be deallocated to avoid a leak. 276 */ 277 #define VdbeMemDynamic(X) \ 278 (((X)->flags&(MEM_Agg|MEM_Dyn))!=0) 279 280 /* 281 ** Clear any existing type flags from a Mem and replace them with f 282 */ 283 #define MemSetTypeFlag(p, f) \ 284 ((p)->flags = ((p)->flags&~(MEM_TypeMask|MEM_Zero))|f) 285 286 /* 287 ** True if Mem X is a NULL-nochng type. 288 */ 289 #define MemNullNochng(X) \ 290 (((X)->flags&MEM_TypeMask)==(MEM_Null|MEM_Zero) \ 291 && (X)->n==0 && (X)->u.nZero==0) 292 293 /* 294 ** Return true if a memory cell is not marked as invalid. This macro 295 ** is for use inside assert() statements only. 296 */ 297 #ifdef SQLITE_DEBUG 298 #define memIsValid(M) ((M)->flags & MEM_Undefined)==0 299 #endif 300 301 /* 302 ** Each auxiliary data pointer stored by a user defined function 303 ** implementation calling sqlite3_set_auxdata() is stored in an instance 304 ** of this structure. All such structures associated with a single VM 305 ** are stored in a linked list headed at Vdbe.pAuxData. All are destroyed 306 ** when the VM is halted (if not before). 307 */ 308 struct AuxData { 309 int iAuxOp; /* Instruction number of OP_Function opcode */ 310 int iAuxArg; /* Index of function argument. */ 311 void *pAux; /* Aux data pointer */ 312 void (*xDeleteAux)(void*); /* Destructor for the aux data */ 313 AuxData *pNextAux; /* Next element in list */ 314 }; 315 316 /* 317 ** The "context" argument for an installable function. A pointer to an 318 ** instance of this structure is the first argument to the routines used 319 ** implement the SQL functions. 320 ** 321 ** There is a typedef for this structure in sqlite.h. So all routines, 322 ** even the public interface to SQLite, can use a pointer to this structure. 323 ** But this file is the only place where the internal details of this 324 ** structure are known. 325 ** 326 ** This structure is defined inside of vdbeInt.h because it uses substructures 327 ** (Mem) which are only defined there. 328 */ 329 struct sqlite3_context { 330 Mem *pOut; /* The return value is stored here */ 331 FuncDef *pFunc; /* Pointer to function information */ 332 Mem *pMem; /* Memory cell used to store aggregate context */ 333 Vdbe *pVdbe; /* The VM that owns this context */ 334 int iOp; /* Instruction number of OP_Function */ 335 int isError; /* Error code returned by the function. */ 336 u8 skipFlag; /* Skip accumulator loading if true */ 337 u8 argc; /* Number of arguments */ 338 sqlite3_value *argv[1]; /* Argument set */ 339 }; 340 341 /* A bitfield type for use inside of structures. Always follow with :N where 342 ** N is the number of bits. 343 */ 344 typedef unsigned bft; /* Bit Field Type */ 345 346 /* The ScanStatus object holds a single value for the 347 ** sqlite3_stmt_scanstatus() interface. 348 */ 349 typedef struct ScanStatus ScanStatus; 350 struct ScanStatus { 351 int addrExplain; /* OP_Explain for loop */ 352 int addrLoop; /* Address of "loops" counter */ 353 int addrVisit; /* Address of "rows visited" counter */ 354 int iSelectID; /* The "Select-ID" for this loop */ 355 LogEst nEst; /* Estimated output rows per loop */ 356 char *zName; /* Name of table or index */ 357 }; 358 359 /* The DblquoteStr object holds the text of a double-quoted 360 ** string for a prepared statement. A linked list of these objects 361 ** is constructed during statement parsing and is held on Vdbe.pDblStr. 362 ** When computing a normalized SQL statement for an SQL statement, that 363 ** list is consulted for each double-quoted identifier to see if the 364 ** identifier should really be a string literal. 365 */ 366 typedef struct DblquoteStr DblquoteStr; 367 struct DblquoteStr { 368 DblquoteStr *pNextStr; /* Next string literal in the list */ 369 char z[8]; /* Dequoted value for the string */ 370 }; 371 372 /* 373 ** An instance of the virtual machine. This structure contains the complete 374 ** state of the virtual machine. 375 ** 376 ** The "sqlite3_stmt" structure pointer that is returned by sqlite3_prepare() 377 ** is really a pointer to an instance of this structure. 378 */ 379 struct Vdbe { 380 sqlite3 *db; /* The database connection that owns this statement */ 381 Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */ 382 Parse *pParse; /* Parsing context used to create this Vdbe */ 383 ynVar nVar; /* Number of entries in aVar[] */ 384 u32 magic; /* Magic number for sanity checking */ 385 int nMem; /* Number of memory locations currently allocated */ 386 int nCursor; /* Number of slots in apCsr[] */ 387 u32 cacheCtr; /* VdbeCursor row cache generation counter */ 388 int pc; /* The program counter */ 389 int rc; /* Value to return */ 390 int nChange; /* Number of db changes made since last reset */ 391 int iStatement; /* Statement number (or 0 if has no opened stmt) */ 392 i64 iCurrentTime; /* Value of julianday('now') for this statement */ 393 i64 nFkConstraint; /* Number of imm. FK constraints this VM */ 394 i64 nStmtDefCons; /* Number of def. constraints when stmt started */ 395 i64 nStmtDefImmCons; /* Number of def. imm constraints when stmt started */ 396 Mem *aMem; /* The memory locations */ 397 Mem **apArg; /* Arguments to currently executing user function */ 398 VdbeCursor **apCsr; /* One element of this array for each open cursor */ 399 Mem *aVar; /* Values for the OP_Variable opcode. */ 400 401 /* When allocating a new Vdbe object, all of the fields below should be 402 ** initialized to zero or NULL */ 403 404 Op *aOp; /* Space to hold the virtual machine's program */ 405 int nOp; /* Number of instructions in the program */ 406 int nOpAlloc; /* Slots allocated for aOp[] */ 407 Mem *aColName; /* Column names to return */ 408 Mem *pResultSet; /* Pointer to an array of results */ 409 char *zErrMsg; /* Error message written here */ 410 VList *pVList; /* Name of variables */ 411 #ifndef SQLITE_OMIT_TRACE 412 i64 startTime; /* Time when query started - used for profiling */ 413 #endif 414 #ifdef SQLITE_DEBUG 415 int rcApp; /* errcode set by sqlite3_result_error_code() */ 416 u32 nWrite; /* Number of write operations that have occurred */ 417 #endif 418 u16 nResColumn; /* Number of columns in one row of the result set */ 419 u8 errorAction; /* Recovery action to do in case of an error */ 420 u8 minWriteFileFormat; /* Minimum file format for writable database files */ 421 u8 prepFlags; /* SQLITE_PREPARE_* flags */ 422 u8 doingRerun; /* True if rerunning after an auto-reprepare */ 423 bft expired:2; /* 1: recompile VM immediately 2: when convenient */ 424 bft explain:2; /* True if EXPLAIN present on SQL command */ 425 bft changeCntOn:1; /* True to update the change-counter */ 426 bft runOnlyOnce:1; /* Automatically expire on reset */ 427 bft usesStmtJournal:1; /* True if uses a statement journal */ 428 bft readOnly:1; /* True for statements that do not write */ 429 bft bIsReader:1; /* True for statements that read */ 430 yDbMask btreeMask; /* Bitmask of db->aDb[] entries referenced */ 431 yDbMask lockMask; /* Subset of btreeMask that requires a lock */ 432 u32 aCounter[7]; /* Counters used by sqlite3_stmt_status() */ 433 char *zSql; /* Text of the SQL statement that generated this */ 434 #ifdef SQLITE_ENABLE_NORMALIZE 435 char *zNormSql; /* Normalization of the associated SQL statement */ 436 DblquoteStr *pDblStr; /* List of double-quoted string literals */ 437 #endif 438 void *pFree; /* Free this when deleting the vdbe */ 439 VdbeFrame *pFrame; /* Parent frame */ 440 VdbeFrame *pDelFrame; /* List of frame objects to free on VM reset */ 441 int nFrame; /* Number of frames in pFrame list */ 442 u32 expmask; /* Binding to these vars invalidates VM */ 443 SubProgram *pProgram; /* Linked list of all sub-programs used by VM */ 444 AuxData *pAuxData; /* Linked list of auxdata allocations */ 445 #ifdef SQLITE_ENABLE_STMT_SCANSTATUS 446 i64 *anExec; /* Number of times each op has been executed */ 447 int nScan; /* Entries in aScan[] */ 448 ScanStatus *aScan; /* Scan definitions for sqlite3_stmt_scanstatus() */ 449 #endif 450 }; 451 452 /* 453 ** The following are allowed values for Vdbe.magic 454 */ 455 #define VDBE_MAGIC_INIT 0x16bceaa5 /* Building a VDBE program */ 456 #define VDBE_MAGIC_RUN 0x2df20da3 /* VDBE is ready to execute */ 457 #define VDBE_MAGIC_HALT 0x319c2973 /* VDBE has completed execution */ 458 #define VDBE_MAGIC_RESET 0x48fa9f76 /* Reset and ready to run again */ 459 #define VDBE_MAGIC_DEAD 0x5606c3c8 /* The VDBE has been deallocated */ 460 461 /* 462 ** Structure used to store the context required by the 463 ** sqlite3_preupdate_*() API functions. 464 */ 465 struct PreUpdate { 466 Vdbe *v; 467 VdbeCursor *pCsr; /* Cursor to read old values from */ 468 int op; /* One of SQLITE_INSERT, UPDATE, DELETE */ 469 u8 *aRecord; /* old.* database record */ 470 KeyInfo keyinfo; 471 UnpackedRecord *pUnpacked; /* Unpacked version of aRecord[] */ 472 UnpackedRecord *pNewUnpacked; /* Unpacked version of new.* record */ 473 int iNewReg; /* Register for new.* values */ 474 i64 iKey1; /* First key value passed to hook */ 475 i64 iKey2; /* Second key value passed to hook */ 476 Mem *aNew; /* Array of new.* values */ 477 Table *pTab; /* Schema object being upated */ 478 Index *pPk; /* PK index if pTab is WITHOUT ROWID */ 479 }; 480 481 /* 482 ** Function prototypes 483 */ 484 void sqlite3VdbeError(Vdbe*, const char *, ...); 485 void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*); 486 void sqliteVdbePopStack(Vdbe*,int); 487 int SQLITE_NOINLINE sqlite3VdbeFinishMoveto(VdbeCursor*); 488 int sqlite3VdbeCursorMoveto(VdbeCursor**, u32*); 489 int sqlite3VdbeCursorRestore(VdbeCursor*); 490 u32 sqlite3VdbeSerialTypeLen(u32); 491 u8 sqlite3VdbeOneByteSerialTypeLen(u8); 492 u32 sqlite3VdbeSerialPut(unsigned char*, Mem*, u32); 493 u32 sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*); 494 void sqlite3VdbeDeleteAuxData(sqlite3*, AuxData**, int, int); 495 496 int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *); 497 int sqlite3VdbeIdxKeyCompare(sqlite3*,VdbeCursor*,UnpackedRecord*,int*); 498 int sqlite3VdbeIdxRowid(sqlite3*, BtCursor*, i64*); 499 int sqlite3VdbeExec(Vdbe*); 500 #if !defined(SQLITE_OMIT_EXPLAIN) || defined(SQLITE_ENABLE_BYTECODE_VTAB) 501 int sqlite3VdbeNextOpcode(Vdbe*,Mem*,int,int*,int*,Op**); 502 char *sqlite3VdbeDisplayP4(sqlite3*,Op*); 503 #endif 504 #if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS) 505 char *sqlite3VdbeDisplayComment(sqlite3*,const Op*,const char*); 506 #endif 507 #if !defined(SQLITE_OMIT_EXPLAIN) 508 int sqlite3VdbeList(Vdbe*); 509 #endif 510 int sqlite3VdbeHalt(Vdbe*); 511 int sqlite3VdbeChangeEncoding(Mem *, int); 512 int sqlite3VdbeMemTooBig(Mem*); 513 int sqlite3VdbeMemCopy(Mem*, const Mem*); 514 void sqlite3VdbeMemShallowCopy(Mem*, const Mem*, int); 515 void sqlite3VdbeMemMove(Mem*, Mem*); 516 int sqlite3VdbeMemNulTerminate(Mem*); 517 int sqlite3VdbeMemSetStr(Mem*, const char*, int, u8, void(*)(void*)); 518 void sqlite3VdbeMemSetInt64(Mem*, i64); 519 #ifdef SQLITE_OMIT_FLOATING_POINT 520 # define sqlite3VdbeMemSetDouble sqlite3VdbeMemSetInt64 521 #else 522 void sqlite3VdbeMemSetDouble(Mem*, double); 523 #endif 524 void sqlite3VdbeMemSetPointer(Mem*, void*, const char*, void(*)(void*)); 525 void sqlite3VdbeMemInit(Mem*,sqlite3*,u16); 526 void sqlite3VdbeMemSetNull(Mem*); 527 void sqlite3VdbeMemSetZeroBlob(Mem*,int); 528 #ifdef SQLITE_DEBUG 529 int sqlite3VdbeMemIsRowSet(const Mem*); 530 #endif 531 int sqlite3VdbeMemSetRowSet(Mem*); 532 int sqlite3VdbeMemMakeWriteable(Mem*); 533 int sqlite3VdbeMemStringify(Mem*, u8, u8); 534 i64 sqlite3VdbeIntValue(Mem*); 535 int sqlite3VdbeMemIntegerify(Mem*); 536 double sqlite3VdbeRealValue(Mem*); 537 int sqlite3VdbeBooleanValue(Mem*, int ifNull); 538 void sqlite3VdbeIntegerAffinity(Mem*); 539 int sqlite3VdbeMemRealify(Mem*); 540 int sqlite3VdbeMemNumerify(Mem*); 541 int sqlite3VdbeMemCast(Mem*,u8,u8); 542 int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,Mem*); 543 int sqlite3VdbeMemFromBtreeZeroOffset(BtCursor*,u32,Mem*); 544 void sqlite3VdbeMemRelease(Mem *p); 545 int sqlite3VdbeMemFinalize(Mem*, FuncDef*); 546 #ifndef SQLITE_OMIT_WINDOWFUNC 547 int sqlite3VdbeMemAggValue(Mem*, Mem*, FuncDef*); 548 #endif 549 #if !defined(SQLITE_OMIT_EXPLAIN) || defined(SQLITE_ENABLE_BYTECODE_VTAB) 550 const char *sqlite3OpcodeName(int); 551 #endif 552 int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve); 553 int sqlite3VdbeMemClearAndResize(Mem *pMem, int n); 554 int sqlite3VdbeCloseStatement(Vdbe *, int); 555 #ifdef SQLITE_DEBUG 556 int sqlite3VdbeFrameIsValid(VdbeFrame*); 557 #endif 558 void sqlite3VdbeFrameMemDel(void*); /* Destructor on Mem */ 559 void sqlite3VdbeFrameDelete(VdbeFrame*); /* Actually deletes the Frame */ 560 int sqlite3VdbeFrameRestore(VdbeFrame *); 561 #ifdef SQLITE_ENABLE_PREUPDATE_HOOK 562 void sqlite3VdbePreUpdateHook(Vdbe*,VdbeCursor*,int,const char*,Table*,i64,int); 563 #endif 564 int sqlite3VdbeTransferError(Vdbe *p); 565 566 int sqlite3VdbeSorterInit(sqlite3 *, int, VdbeCursor *); 567 void sqlite3VdbeSorterReset(sqlite3 *, VdbeSorter *); 568 void sqlite3VdbeSorterClose(sqlite3 *, VdbeCursor *); 569 int sqlite3VdbeSorterRowkey(const VdbeCursor *, Mem *); 570 int sqlite3VdbeSorterNext(sqlite3 *, const VdbeCursor *); 571 int sqlite3VdbeSorterRewind(const VdbeCursor *, int *); 572 int sqlite3VdbeSorterWrite(const VdbeCursor *, Mem *); 573 int sqlite3VdbeSorterCompare(const VdbeCursor *, Mem *, int, int *); 574 575 #ifdef SQLITE_DEBUG 576 void sqlite3VdbeIncrWriteCounter(Vdbe*, VdbeCursor*); 577 void sqlite3VdbeAssertAbortable(Vdbe*); 578 #else 579 # define sqlite3VdbeIncrWriteCounter(V,C) 580 # define sqlite3VdbeAssertAbortable(V) 581 #endif 582 583 #if !defined(SQLITE_OMIT_SHARED_CACHE) 584 void sqlite3VdbeEnter(Vdbe*); 585 #else 586 # define sqlite3VdbeEnter(X) 587 #endif 588 589 #if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0 590 void sqlite3VdbeLeave(Vdbe*); 591 #else 592 # define sqlite3VdbeLeave(X) 593 #endif 594 595 #ifdef SQLITE_DEBUG 596 void sqlite3VdbeMemAboutToChange(Vdbe*,Mem*); 597 int sqlite3VdbeCheckMemInvariants(Mem*); 598 #endif 599 600 #ifndef SQLITE_OMIT_FOREIGN_KEY 601 int sqlite3VdbeCheckFk(Vdbe *, int); 602 #else 603 # define sqlite3VdbeCheckFk(p,i) 0 604 #endif 605 606 #ifdef SQLITE_DEBUG 607 void sqlite3VdbePrintSql(Vdbe*); 608 void sqlite3VdbeMemPrettyPrint(Mem *pMem, StrAccum *pStr); 609 #endif 610 #ifndef SQLITE_OMIT_UTF16 611 int sqlite3VdbeMemTranslate(Mem*, u8); 612 int sqlite3VdbeMemHandleBom(Mem *pMem); 613 #endif 614 615 #ifndef SQLITE_OMIT_INCRBLOB 616 int sqlite3VdbeMemExpandBlob(Mem *); 617 #define ExpandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0) 618 #else 619 #define sqlite3VdbeMemExpandBlob(x) SQLITE_OK 620 #define ExpandBlob(P) SQLITE_OK 621 #endif 622 623 #endif /* !defined(SQLITE_VDBEINT_H) */ 624