15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 2003 September 6 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** The author disclaims copyright to this source code. In place of 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** a legal notice, here is a blessing: 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** May you do good and not evil. 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** May you find forgiveness for yourself and forgive others. 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** May you share freely, never taking more than you give. 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)************************************************************************* 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** This is the header file for information that is private to the 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** VDBE. This information used to all be at the top of the single 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** source code file "vdbe.c". When that file became too big (over 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 6000 lines long) it was split up into several smaller files and 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** this header information was factored out. 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef _VDBEINT_H_ 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define _VDBEINT_H_ 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** SQL is translated into a sequence of instructions to be 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** executed by a virtual machine. Each instruction is an instance 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** of the following structure. 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct VdbeOp Op; 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** Boolean values 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef unsigned char Bool; 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** A cursor is a pointer into a single BTree within a database file. 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** The cursor can seek to a BTree entry with a particular key, or 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** loop over all entries of the Btree. You can also insert new BTree 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** entries or retrieve the key or data from the entry that the cursor 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** is currently pointing to. 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** Every cursor that the virtual machine has open is represented by an 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** instance of the following structure. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct VdbeCursor { 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) BtCursor *pCursor; /* The cursor structure of the backend */ 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Btree *pBt; /* Separate file holding temporary table */ 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) KeyInfo *pKeyInfo; /* Info about index keys needed by index cursors */ 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int iDb; /* Index of cursor database in db->aDb[] (or -1) */ 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int pseudoTableReg; /* Register holding pseudotable content. */ 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nField; /* Number of fields in the header */ 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool zeroed; /* True if zeroed out and ready for reuse */ 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool rowidIsValid; /* True if lastRowid is valid */ 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool atFirst; /* True if pointing to first entry */ 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool useRandomRowid; /* Generate new record numbers semi-randomly */ 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool nullRow; /* True if pointing to a row with no data */ 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool deferredMoveto; /* A call to sqlite3BtreeMoveto() is needed */ 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool isTable; /* True if a table requiring integer keys */ 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool isIndex; /* True if an index containing keys only - no data */ 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Bool isOrdered; /* True if the underlying table is BTREE_UNORDERED */ 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sqlite3_vtab_cursor *pVtabCursor; /* The cursor for a virtual table */ 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const sqlite3_module *pModule; /* Module for cursor pVtabCursor */ 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) i64 seqCount; /* Sequence counter */ 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) i64 movetoTarget; /* Argument to the deferred sqlite3BtreeMoveto() */ 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) i64 lastRowid; /* Last rowid from a Next or NextIdx operation */ 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Result of last sqlite3BtreeMoveto() done by an OP_NotExists or 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ** OP_IsUnique opcode on this cursor. */ 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int seekResult; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Cached information about the header for the data record that the 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ** cursor is currently pointing to. Only valid if cacheStatus matches 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ** Vdbe.cacheCtr. Vdbe.cacheCtr will never take on the value of 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ** CACHE_STALE and so setting cacheStatus=CACHE_STALE guarantees that 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ** the cache is out of date. 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ** 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ** aRow might point to (ephemeral) data for the current row, or it might 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ** be NULL. 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u32 cacheStatus; /* Cache is valid if this matches Vdbe.cacheCtr */ 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int payloadSize; /* Total number of bytes in the record */ 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u32 *aType; /* Type values for all entries in the record */ 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u32 *aOffset; /* Cached offsets to the start of each columns data */ 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 *aRow; /* Data for the current row, if all on one page */ 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct VdbeCursor VdbeCursor; 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** When a sub-program is executed (OP_Program), a structure of this type 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** is allocated to store the current value of the program counter, as 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** well as the current memory cell array and various other frame specific 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** values stored in the Vdbe struct. When the sub-program is finished, 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** these values are copied back to the Vdbe from the VdbeFrame structure, 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** restoring the state of the VM to as it was before the sub-program 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** began executing. 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** The memory for a VdbeFrame object is allocated and managed by a memory 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** cell in the parent (calling) frame. When the memory cell is deleted or 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** overwritten, the VdbeFrame object is not freed immediately. Instead, it 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** is linked into the Vdbe.pDelFrame list. The contents of the Vdbe.pDelFrame 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** list is deleted when the VM is reset in VdbeHalt(). The reason for doing 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** this instead of deleting the VdbeFrame immediately is to avoid recursive 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** calls to sqlite3VdbeMemRelease() when the memory cells belonging to the 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** child frame are released. 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** The currently executing frame is stored in Vdbe.pFrame. Vdbe.pFrame is 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** set to NULL if the currently executing frame is the main program. 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct VdbeFrame VdbeFrame; 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct VdbeFrame { 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Vdbe *v; /* VM this frame belongs to */ 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int pc; /* Program Counter in parent (calling) frame */ 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Op *aOp; /* Program instructions for parent frame */ 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nOp; /* Size of aOp array */ 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mem *aMem; /* Array of memory cells for parent frame */ 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nMem; /* Number of entries in aMem */ 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VdbeCursor **apCsr; /* Array of Vdbe cursors for parent frame */ 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u16 nCursor; /* Number of entries in apCsr */ 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void *token; /* Copy of SubProgram.token */ 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nChildMem; /* Number of memory cells for child frame */ 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nChildCsr; /* Number of cursors for child frame */ 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) i64 lastRowid; /* Last insert rowid (sqlite3.lastRowid) */ 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nChange; /* Statement changes (Vdbe.nChanges) */ 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VdbeFrame *pParent; /* Parent of this frame, or NULL if parent is main */ 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define VdbeFrameMem(p) ((Mem *)&((u8 *)p)[ROUND8(sizeof(VdbeFrame))]) 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** A value for VdbeCursor.cacheValid that means the cache is always invalid. 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define CACHE_STALE 0 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** Internally, the vdbe manipulates nearly all SQL values as Mem 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** structures. Each Mem struct may cache multiple representations (string, 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** integer etc.) of the same value. 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct Mem { 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sqlite3 *db; /* The associated database connection */ 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char *z; /* String or BLOB value */ 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double r; /* Real value */ 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) union { 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) i64 i; /* Integer value used when MEM_Int is set in flags */ 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nZero; /* Used when bit MEM_Zero is set in flags */ 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FuncDef *pDef; /* Used only when flags==MEM_Agg */ 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RowSet *pRowSet; /* Used only when flags==MEM_RowSet */ 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VdbeFrame *pFrame; /* Used when flags==MEM_Frame */ 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } u; 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int n; /* Number of characters in string value, excluding '\0' */ 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u16 flags; /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */ 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 type; /* One of SQLITE_NULL, SQLITE_TEXT, SQLITE_INTEGER, etc */ 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 enc; /* SQLITE_UTF8, SQLITE_UTF16BE, SQLITE_UTF16LE */ 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef SQLITE_DEBUG 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mem *pScopyFrom; /* This Mem is a shallow copy of pScopyFrom */ 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void *pFiller; /* So that sizeof(Mem) is a multiple of 8 */ 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void (*xDel)(void *); /* If not null, call this function to delete Mem.z */ 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char *zMalloc; /* Dynamic buffer allocated by sqlite3_malloc() */ 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* One or more of the following flags are set to indicate the validOK 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** representations of the value stored in the Mem struct. 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** If the MEM_Null flag is set, then the value is an SQL NULL value. 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** No other flags may be set in this case. 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** If the MEM_Str flag is set then Mem.z points at a string representation. 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** Usually this is encoded in the same unicode encoding as the main 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** database (see below for exceptions). If the MEM_Term flag is also 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** set, then the string is nul terminated. The MEM_Int and MEM_Real 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** flags may coexist with the MEM_Str flag. 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Null 0x0001 /* Value is NULL */ 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Str 0x0002 /* Value is a string */ 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Int 0x0004 /* Value is an integer */ 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Real 0x0008 /* Value is a real number */ 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Blob 0x0010 /* Value is a BLOB */ 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_RowSet 0x0020 /* Value is a RowSet object */ 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Frame 0x0040 /* Value is a VdbeFrame object */ 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Invalid 0x0080 /* Value is undefined */ 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_TypeMask 0x00ff /* Mask of type bits */ 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Whenever Mem contains a valid string or blob representation, one of 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** the following flags must be set to determine the memory management 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** policy for Mem.z. The MEM_Term flag tells us whether or not the 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** string is \000 or \u0000 terminated 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Term 0x0200 /* String rep is nul terminated */ 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Dyn 0x0400 /* Need to call sqliteFree() on Mem.z */ 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Static 0x0800 /* Mem.z points to a static string */ 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Ephem 0x1000 /* Mem.z points to an ephemeral string */ 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Agg 0x2000 /* Mem.z points to an agg function context */ 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEM_Zero 0x4000 /* Mem.i contains count of 0s appended to blob */ 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef SQLITE_OMIT_INCRBLOB 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) #undef MEM_Zero 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) #define MEM_Zero 0x0000 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** Clear any existing type flags from a Mem and replace them with f 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MemSetTypeFlag(p, f) \ 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ((p)->flags = ((p)->flags&~(MEM_TypeMask|MEM_Zero))|f) 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** Return true if a memory cell is not marked as invalid. This macro 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** is for use inside assert() statements only. 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef SQLITE_DEBUG 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define memIsValid(M) ((M)->flags & MEM_Invalid)==0 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* A VdbeFunc is just a FuncDef (defined in sqliteInt.h) that contains 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** additional information about auxiliary information bound to arguments 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** of the function. This is used to implement the sqlite3_get_auxdata() 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** and sqlite3_set_auxdata() APIs. The "auxdata" is some auxiliary data 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** that can be associated with a constant argument to a function. This 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** allows functions such as "regexp" to compile their constant regular 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** expression argument once and reused the compiled code for multiple 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** invocations. 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct VdbeFunc { 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FuncDef *pFunc; /* The definition of the function */ 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nAux; /* Number of entries allocated for apAux[] */ 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct AuxData { 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void *pAux; /* Aux data for the i-th argument */ 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void (*xDelete)(void *); /* Destructor for the aux data */ 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } apAux[1]; /* One slot for each function argument */ 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** The "context" argument for a installable function. A pointer to an 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** instance of this structure is the first argument to the routines used 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** implement the SQL functions. 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** There is a typedef for this structure in sqlite.h. So all routines, 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** even the public interface to SQLite, can use a pointer to this structure. 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** But this file is the only place where the internal details of this 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** structure are known. 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** This structure is defined inside of vdbeInt.h because it uses substructures 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** (Mem) which are only defined there. 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct sqlite3_context { 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FuncDef *pFunc; /* Pointer to function information. MUST BE FIRST */ 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VdbeFunc *pVdbeFunc; /* Auxilary data, if created. */ 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mem s; /* The return value is stored here */ 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mem *pMem; /* Memory cell used to store aggregate context */ 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int isError; /* Error code returned by the function. */ 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CollSeq *pColl; /* Collating sequence */ 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** An instance of the virtual machine. This structure contains the complete 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** state of the virtual machine. 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** The "sqlite3_stmt" structure pointer that is returned by sqlite3_prepare() 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** is really a pointer to an instance of this structure. 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** The Vdbe.inVtabMethod variable is set to non-zero for the duration of 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** any virtual table method invocations made by the vdbe program. It is 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** set to 2 for xDestroy method calls and 1 for all other methods. This 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** variable is used for two purposes: to allow xDestroy methods to execute 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** "DROP TABLE" statements and to prevent some nasty side effects of 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** malloc failure when SQLite is invoked recursively by a virtual table 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** method function. 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct Vdbe { 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sqlite3 *db; /* The database connection that owns this statement */ 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Op *aOp; /* Space to hold the virtual machine's program */ 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mem *aMem; /* The memory locations */ 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mem **apArg; /* Arguments to currently executing user function */ 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mem *aColName; /* Column names to return */ 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mem *pResultSet; /* Pointer to an array of results */ 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nMem; /* Number of memory locations currently allocated */ 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nOp; /* Number of instructions in the program */ 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nOpAlloc; /* Number of slots allocated for aOp[] */ 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nLabel; /* Number of labels used */ 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nLabelAlloc; /* Number of slots allocated in aLabel[] */ 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int *aLabel; /* Space to hold the labels */ 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u16 nResColumn; /* Number of columns in one row of the result set */ 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u16 nCursor; /* Number of slots in apCsr[] */ 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u32 magic; /* Magic number for sanity checking */ 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char *zErrMsg; /* Error message written here */ 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Vdbe *pPrev,*pNext; /* Linked list of VDBEs with the same Vdbe.db */ 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VdbeCursor **apCsr; /* One element of this array for each open cursor */ 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Mem *aVar; /* Values for the OP_Variable opcode. */ 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char **azVar; /* Name of variables */ 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ynVar nVar; /* Number of entries in aVar[] */ 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u32 cacheCtr; /* VdbeCursor row cache generation counter */ 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int pc; /* The program counter */ 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int rc; /* Value to return */ 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 errorAction; /* Recovery action to do in case of an error */ 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 okVar; /* True if azVar[] has been initialized */ 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 explain; /* True if EXPLAIN present on SQL command */ 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 changeCntOn; /* True to update the change-counter */ 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 expired; /* True if the VM needs to be recompiled */ 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 runOnlyOnce; /* Automatically expire on reset */ 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 minWriteFileFormat; /* Minimum file format for writable database files */ 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 inVtabMethod; /* See comments above */ 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 usesStmtJournal; /* True if uses a statement journal */ 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 readOnly; /* True for read-only statements */ 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u8 isPrepareV2; /* True if prepared with prepare_v2() */ 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nChange; /* Number of db changes made since last reset */ 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) yDbMask btreeMask; /* Bitmask of db->aDb[] entries referenced */ 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) yDbMask lockMask; /* Subset of btreeMask that requires a lock */ 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int iStatement; /* Statement number (or 0 if has not opened stmt) */ 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int aCounter[3]; /* Counters used by sqlite3_stmt_status() */ 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef SQLITE_OMIT_TRACE 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) i64 startTime; /* Time when query started - used for profiling */ 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) i64 nFkConstraint; /* Number of imm. FK constraints this VM */ 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) i64 nStmtDefCons; /* Number of def. constraints when stmt started */ 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char *zSql; /* Text of the SQL statement that generated this */ 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void *pFree; /* Free this when deleting the vdbe */ 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef SQLITE_DEBUG 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FILE *trace; /* Write an execution trace here, if not NULL */ 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VdbeFrame *pFrame; /* Parent frame */ 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) VdbeFrame *pDelFrame; /* List of frame objects to free on VM reset */ 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int nFrame; /* Number of frames in pFrame list */ 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) u32 expmask; /* Binding to these vars invalidates VM */ 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SubProgram *pProgram; /* Linked list of all sub-programs used by VM */ 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** The following are allowed values for Vdbe.magic 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define VDBE_MAGIC_INIT 0x26bceaa5 /* Building a VDBE program */ 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define VDBE_MAGIC_RUN 0xbdf20da3 /* VDBE is ready to execute */ 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define VDBE_MAGIC_HALT 0x519c2973 /* VDBE has completed execution */ 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define VDBE_MAGIC_DEAD 0xb606c3c8 /* The VDBE has been deallocated */ 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)** Function prototypes 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*); 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqliteVdbePopStack(Vdbe*,int); 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeCursorMoveto(VdbeCursor*); 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE) 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbePrintOp(FILE*, int, Op*); 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)u32 sqlite3VdbeSerialTypeLen(u32); 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)u32 sqlite3VdbeSerialType(Mem*, int); 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)u32 sqlite3VdbeSerialPut(unsigned char*, int, Mem*, int); 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)u32 sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*); 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeDeleteAuxData(VdbeFunc*, int); 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *); 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeIdxKeyCompare(VdbeCursor*,UnpackedRecord*,int*); 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeIdxRowid(sqlite3*, BtCursor *, i64 *); 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3MemCompare(const Mem*, const Mem*, const CollSeq*); 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeExec(Vdbe*); 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeList(Vdbe*); 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeHalt(Vdbe*); 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeChangeEncoding(Mem *, int); 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemTooBig(Mem*); 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemCopy(Mem*, const Mem*); 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemShallowCopy(Mem*, const Mem*, int); 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemMove(Mem*, Mem*); 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemNulTerminate(Mem*); 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemSetStr(Mem*, const char*, int, u8, void(*)(void*)); 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemSetInt64(Mem*, i64); 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef SQLITE_OMIT_FLOATING_POINT 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define sqlite3VdbeMemSetDouble sqlite3VdbeMemSetInt64 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void sqlite3VdbeMemSetDouble(Mem*, double); 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemSetNull(Mem*); 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemSetZeroBlob(Mem*,int); 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemSetRowSet(Mem*); 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemMakeWriteable(Mem*); 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemStringify(Mem*, int); 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)i64 sqlite3VdbeIntValue(Mem*); 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemIntegerify(Mem*); 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)double sqlite3VdbeRealValue(Mem*); 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeIntegerAffinity(Mem*); 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemRealify(Mem*); 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemNumerify(Mem*); 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemFromBtree(BtCursor*,int,int,int,Mem*); 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemRelease(Mem *p); 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemReleaseExternal(Mem *p); 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemFinalize(Mem*, FuncDef*); 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const char *sqlite3OpcodeName(int); 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve); 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeCloseStatement(Vdbe *, int); 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeFrameDelete(VdbeFrame*); 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeFrameRestore(VdbeFrame *); 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemStoreType(Mem *pMem); 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE>0 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void sqlite3VdbeEnter(Vdbe*); 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void sqlite3VdbeLeave(Vdbe*); 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define sqlite3VdbeEnter(X) 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define sqlite3VdbeLeave(X) 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef SQLITE_DEBUG 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void sqlite3VdbeMemPrepareToChange(Vdbe*,Mem*); 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef SQLITE_OMIT_FOREIGN_KEY 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeCheckFk(Vdbe *, int); 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define sqlite3VdbeCheckFk(p,i) 0 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemTranslate(Mem*, u8); 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef SQLITE_DEBUG 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void sqlite3VdbePrintSql(Vdbe*); 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf); 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int sqlite3VdbeMemHandleBom(Mem *pMem); 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef SQLITE_OMIT_INCRBLOB 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int sqlite3VdbeMemExpandBlob(Mem *); 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) #define sqlite3VdbeMemExpandBlob(x) SQLITE_OK 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* !defined(_VDBEINT_H_) */ 423