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Overview
| Comment: | Change the names of the PushList and PopList opcodes to ListPush and ListPop so that they will appear together with the other List opcodes in the documentation. (CVS 583) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
c53b0b9283c5c34def87d58b03fd979d |
| User & Date: | drh 2002-05-23 22:07:03 |
Context
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2002-05-24
| ||
| 02:04 | Split the IdList structure into IdList and SrcList. SrcList is used to represent a FROM clause and IdList is used for everything else. This change allows SrcList to grow to support outer joins without burdening the other uses of IdList. (CVS 584) check-in: a167b71d user: drh tags: trunk | |
|
2002-05-23
| ||
| 22:07 | Change the names of the PushList and PopList opcodes to ListPush and ListPop so that they will appear together with the other List opcodes in the documentation. (CVS 583) check-in: c53b0b92 user: drh tags: trunk | |
| 13:15 | Fix for ticket #50. (CVS 582) check-in: 82b74a49 user: drh tags: trunk | |
Changes
Changes to src/trigger.c.
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sqliteSelect(pParse, pTriggerStep->pSelect, SRT_Union,
tmp_tbl, 0, 0, 0);
sqliteVdbeAddOp(pParse->pVdbe, OP_Close, tmp_tbl, 0);
pParse->nTab--;
break;
}
case TK_UPDATE: {
sqliteVdbeAddOp(pParse->pVdbe, OP_PushList, 0, 0);
sqliteUpdate(pParse, &pTriggerStep->target,
sqliteExprListDup(pTriggerStep->pExprList),
sqliteExprDup(pTriggerStep->pWhere), orconf);
sqliteVdbeAddOp(pParse->pVdbe, OP_PopList, 0, 0);
break;
}
case TK_INSERT: {
sqliteInsert(pParse, &pTriggerStep->target,
sqliteExprListDup(pTriggerStep->pExprList),
sqliteSelectDup(pTriggerStep->pSelect),
sqliteIdListDup(pTriggerStep->pIdList), orconf);
break;
}
case TK_DELETE: {
sqliteVdbeAddOp(pParse->pVdbe, OP_PushList, 0, 0);
sqliteDeleteFrom(pParse, &pTriggerStep->target,
sqliteExprDup(pTriggerStep->pWhere));
sqliteVdbeAddOp(pParse->pVdbe, OP_PopList, 0, 0);
break;
}
default:
assert(0);
}
pParse->nTab = saveNTab;
pTriggerStep = pTriggerStep->pNext;
|
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sqliteSelect(pParse, pTriggerStep->pSelect, SRT_Union,
tmp_tbl, 0, 0, 0);
sqliteVdbeAddOp(pParse->pVdbe, OP_Close, tmp_tbl, 0);
pParse->nTab--;
break;
}
case TK_UPDATE: {
sqliteVdbeAddOp(pParse->pVdbe, OP_ListPush, 0, 0);
sqliteUpdate(pParse, &pTriggerStep->target,
sqliteExprListDup(pTriggerStep->pExprList),
sqliteExprDup(pTriggerStep->pWhere), orconf);
sqliteVdbeAddOp(pParse->pVdbe, OP_ListPop, 0, 0);
break;
}
case TK_INSERT: {
sqliteInsert(pParse, &pTriggerStep->target,
sqliteExprListDup(pTriggerStep->pExprList),
sqliteSelectDup(pTriggerStep->pSelect),
sqliteIdListDup(pTriggerStep->pIdList), orconf);
break;
}
case TK_DELETE: {
sqliteVdbeAddOp(pParse->pVdbe, OP_ListPush, 0, 0);
sqliteDeleteFrom(pParse, &pTriggerStep->target,
sqliteExprDup(pTriggerStep->pWhere));
sqliteVdbeAddOp(pParse->pVdbe, OP_ListPop, 0, 0);
break;
}
default:
assert(0);
}
pParse->nTab = saveNTab;
pTriggerStep = pTriggerStep->pNext;
|
Changes to src/update.c.
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains C code routines that are called by the parser ** to handle UPDATE statements. ** ** $Id: update.c,v 1.41 2002/05/23 12:50:19 drh Exp $ */ #include "sqliteInt.h" /* ** Process an UPDATE statement. */ void sqliteUpdate( ................................................................................ /* Loop over every record that needs updating. We have to load ** the old data for each record to be updated because some columns ** might not change and we will need to copy the old value. ** Also, the old data is needed to delete the old index entires. ** So make the cursor point at the old record. */ if( !row_triggers_exist ){ int ii; sqliteVdbeAddOp(v, OP_ListRewind, 0, 0); addr = sqliteVdbeAddOp(v, OP_ListRead, 0, 0); sqliteVdbeAddOp(v, OP_Dup, 0, 0); } sqliteVdbeAddOp(v, OP_NotExists, base, addr); /* If the record number will change, push the record number as it |
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains C code routines that are called by the parser ** to handle UPDATE statements. ** ** $Id: update.c,v 1.42 2002/05/23 22:07:03 drh Exp $ */ #include "sqliteInt.h" /* ** Process an UPDATE statement. */ void sqliteUpdate( ................................................................................ /* Loop over every record that needs updating. We have to load ** the old data for each record to be updated because some columns ** might not change and we will need to copy the old value. ** Also, the old data is needed to delete the old index entires. ** So make the cursor point at the old record. */ if( !row_triggers_exist ){ sqliteVdbeAddOp(v, OP_ListRewind, 0, 0); addr = sqliteVdbeAddOp(v, OP_ListRead, 0, 0); sqliteVdbeAddOp(v, OP_Dup, 0, 0); } sqliteVdbeAddOp(v, OP_NotExists, base, addr); /* If the record number will change, push the record number as it |
Changes to src/vdbe.c.
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** type to the other occurs as necessary. ** ** Most of the code in this file is taken up by the sqliteVdbeExec() ** function which does the work of interpreting a VDBE program. ** But other routines are also provided to help in building up ** a program instruction by instruction. ** ** $Id: vdbe.c,v 1.145 2002/05/23 02:09:04 drh Exp $ */ #include "sqliteInt.h" #include <ctype.h> /* ** The following global variable is incremented every time a cursor ** moves, either by the OP_MoveTo or the OP_Next opcode. The test ................................................................................ Agg agg; /* Aggregate information */ int nSet; /* Number of sets allocated */ Set *aSet; /* An array of sets */ int nCallback; /* Number of callbacks invoked so far */ int iLimit; /* Limit on the number of callbacks remaining */ int iOffset; /* Offset before beginning to do callbacks */ int keylistStackDepth; /* The size of the "keylist" stack */ Keylist **keylistStack; /* The stack used by opcodes PushList & PopList */ }; /* ** Create a new virtual database engine. */ Vdbe *sqliteVdbeCreate(sqlite *db){ Vdbe *p; ................................................................................ "PutStrKey", "Distinct", "Found", "NotFound", "IsUnique", "NotExists", "Delete", "Column", "KeyAsData", "Recno", "FullKey", "NullRow", "Last", "Rewind", "Next", "Destroy", "Clear", "CreateIndex", "CreateTable", "IntegrityCk", "IdxPut", "IdxDelete", "IdxRecno", "IdxGT", "IdxGE", "MemLoad", "MemStore", "ListWrite", "ListRewind", "ListRead", "ListReset", "SortPut", "SortMakeRec", "SortMakeKey", "Sort", "SortNext", "SortCallback", "SortReset", "FileOpen", "FileRead", "FileColumn", "AggReset", "AggFocus", "AggNext", "AggSet", "AggGet", "AggFunc", "AggInit", "SetInsert", "SetFound", "SetNotFound", "MakeRecord", "MakeKey", "MakeIdxKey", "IncrKey", "Goto", "If", "Halt", "ColumnCount", "ColumnName", "Callback", "NullCallback", "Integer", "String", "Pop", "Dup", "Pull", "Push", "MustBeInt", "Add", "AddImm", "Subtract", "Multiply", "Divide", "Remainder", "BitAnd", "BitOr", "BitNot", "ShiftLeft", "ShiftRight", "AbsValue", "Eq", "Ne", "Lt", "Le", "Gt", "Ge", "IsNull", "NotNull", "Negative", "And", "Or", "Not", "Concat", "Noop", "Function", "Limit", "PushList", "PopList", }; /* ** Given the name of an opcode, return its number. Return 0 if ** there is no match. ** ** This routine is used for testing and debugging. ................................................................................ case OP_ListReset: { if( p->pList ){ KeylistFree(p->pList); p->pList = 0; } break; } /* Opcode: SortPut * * * ** ** The TOS is the key and the NOS is the data. Pop both from the stack ** and put them on the sorter. The key and data should have been ** made using SortMakeKey and SortMakeRec, respectively. */ ................................................................................ VERIFY( if( tos<0 ) goto not_enough_stack; ) if( Stringify(p, tos) ) goto no_mem; if( VERIFY( i>=0 && i<p->nSet &&) sqliteHashFind(&p->aSet[i].hash, zStack[tos], aStack[tos].n)){ pc = pOp->p2 - 1; } POPSTACK; break; } /* Opcode: PushList * * * ** ** Save the current Vdbe list such that it can be restored by a PopList ** opcode. The list is empty after this is executed. */ case OP_PushList: { p->keylistStackDepth++; assert(p->keylistStackDepth > 0); p->keylistStack = sqliteRealloc(p->keylistStack, sizeof(Keylist *) * p->keylistStackDepth); p->keylistStack[p->keylistStackDepth - 1] = p->pList; p->pList = 0; break; } /* Opcode: PopList * * * ** ** Restore the Vdbe list to the state it was in when PushList was last ** executed. */ case OP_PopList: { assert(p->keylistStackDepth > 0); p->keylistStackDepth--; KeylistFree(p->pList); p->pList = p->keylistStack[p->keylistStackDepth]; p->keylistStack[p->keylistStackDepth] = 0; if( p->keylistStackDepth == 0 ){ sqliteFree(p->keylistStack); p->keylistStack = 0; } break; } /* Opcode: SetNotFound P1 P2 * ** ** Pop the stack once and compare the value popped off with the ** contents of set P1. If the element popped does not exists in |
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** type to the other occurs as necessary. ** ** Most of the code in this file is taken up by the sqliteVdbeExec() ** function which does the work of interpreting a VDBE program. ** But other routines are also provided to help in building up ** a program instruction by instruction. ** ** $Id: vdbe.c,v 1.146 2002/05/23 22:07:03 drh Exp $ */ #include "sqliteInt.h" #include <ctype.h> /* ** The following global variable is incremented every time a cursor ** moves, either by the OP_MoveTo or the OP_Next opcode. The test ................................................................................ Agg agg; /* Aggregate information */ int nSet; /* Number of sets allocated */ Set *aSet; /* An array of sets */ int nCallback; /* Number of callbacks invoked so far */ int iLimit; /* Limit on the number of callbacks remaining */ int iOffset; /* Offset before beginning to do callbacks */ int keylistStackDepth; /* The size of the "keylist" stack */ Keylist **keylistStack; /* The stack used by opcodes ListPush & ListPop */ }; /* ** Create a new virtual database engine. */ Vdbe *sqliteVdbeCreate(sqlite *db){ Vdbe *p; ................................................................................ "PutStrKey", "Distinct", "Found", "NotFound", "IsUnique", "NotExists", "Delete", "Column", "KeyAsData", "Recno", "FullKey", "NullRow", "Last", "Rewind", "Next", "Destroy", "Clear", "CreateIndex", "CreateTable", "IntegrityCk", "IdxPut", "IdxDelete", "IdxRecno", "IdxGT", "IdxGE", "MemLoad", "MemStore", "ListWrite", "ListRewind", "ListRead", "ListReset", "ListPush", "ListPop", "SortPut", "SortMakeRec", "SortMakeKey", "Sort", "SortNext", "SortCallback", "SortReset", "FileOpen", "FileRead", "FileColumn", "AggReset", "AggFocus", "AggNext", "AggSet", "AggGet", "AggFunc", "AggInit", "AggPush", "AggPop", "SetInsert", "SetFound", "SetNotFound", "MakeRecord", "MakeKey", "MakeIdxKey", "IncrKey", "Goto", "If", "Halt", "ColumnCount", "ColumnName", "Callback", "NullCallback", "Integer", "String", "Pop", "Dup", "Pull", "Push", "MustBeInt", "Add", "AddImm", "Subtract", "Multiply", "Divide", "Remainder", "BitAnd", "BitOr", "BitNot", "ShiftLeft", "ShiftRight", "AbsValue", "Eq", "Ne", "Lt", "Le", "Gt", "Ge", "IsNull", "NotNull", "Negative", "And", "Or", "Not", "Concat", "Noop", "Function", "Limit", }; /* ** Given the name of an opcode, return its number. Return 0 if ** there is no match. ** ** This routine is used for testing and debugging. ................................................................................ case OP_ListReset: { if( p->pList ){ KeylistFree(p->pList); p->pList = 0; } break; } /* Opcode: ListPush * * * ** ** Save the current Vdbe list such that it can be restored by a PopList ** opcode. The list is empty after this is executed. */ case OP_ListPush: { p->keylistStackDepth++; assert(p->keylistStackDepth > 0); p->keylistStack = sqliteRealloc(p->keylistStack, sizeof(Keylist *) * p->keylistStackDepth); p->keylistStack[p->keylistStackDepth - 1] = p->pList; p->pList = 0; break; } /* Opcode: ListPop * * * ** ** Restore the Vdbe list to the state it was in when PushList was last ** executed. */ case OP_ListPop: { assert(p->keylistStackDepth > 0); p->keylistStackDepth--; KeylistFree(p->pList); p->pList = p->keylistStack[p->keylistStackDepth]; p->keylistStack[p->keylistStackDepth] = 0; if( p->keylistStackDepth == 0 ){ sqliteFree(p->keylistStack); p->keylistStack = 0; } break; } /* Opcode: SortPut * * * ** ** The TOS is the key and the NOS is the data. Pop both from the stack ** and put them on the sorter. The key and data should have been ** made using SortMakeKey and SortMakeRec, respectively. */ ................................................................................ VERIFY( if( tos<0 ) goto not_enough_stack; ) if( Stringify(p, tos) ) goto no_mem; if( VERIFY( i>=0 && i<p->nSet &&) sqliteHashFind(&p->aSet[i].hash, zStack[tos], aStack[tos].n)){ pc = pOp->p2 - 1; } POPSTACK; break; } /* Opcode: SetNotFound P1 P2 * ** ** Pop the stack once and compare the value popped off with the ** contents of set P1. If the element popped does not exists in |
Changes to src/vdbe.h.
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************************************************************************* ** Header file for the Virtual DataBase Engine (VDBE) ** ** This header defines the interface to the virtual database engine ** or VDBE. The VDBE implements an abstract machine that runs a ** simple program to access and modify the underlying database. ** ** $Id: vdbe.h,v 1.51 2002/05/15 08:30:14 danielk1977 Exp $ */ #ifndef _SQLITE_VDBE_H_ #define _SQLITE_VDBE_H_ #include <stdio.h> /* ** A single VDBE is an opaque structure named "Vdbe". Only routines ................................................................................ #define OP_MemLoad 42 #define OP_MemStore 43 #define OP_ListWrite 44 #define OP_ListRewind 45 #define OP_ListRead 46 #define OP_ListReset 47 #define OP_SortPut 48 #define OP_SortMakeRec 49 #define OP_SortMakeKey 50 #define OP_Sort 51 #define OP_SortNext 52 #define OP_SortCallback 53 #define OP_SortReset 54 #define OP_FileOpen 55 #define OP_FileRead 56 #define OP_FileColumn 57 #define OP_AggReset 58 #define OP_AggFocus 59 #define OP_AggNext 60 #define OP_AggSet 61 #define OP_AggGet 62 #define OP_AggFunc 63 #define OP_AggInit 64 #define OP_SetInsert 65 #define OP_SetFound 66 #define OP_SetNotFound 67 #define OP_MakeRecord 68 #define OP_MakeKey 69 #define OP_MakeIdxKey 70 #define OP_IncrKey 71 #define OP_Goto 72 #define OP_If 73 #define OP_Halt 74 #define OP_ColumnCount 75 #define OP_ColumnName 76 #define OP_Callback 77 #define OP_NullCallback 78 #define OP_Integer 79 #define OP_String 80 #define OP_Pop 81 #define OP_Dup 82 #define OP_Pull 83 #define OP_Push 84 #define OP_MustBeInt 85 #define OP_Add 86 #define OP_AddImm 87 #define OP_Subtract 88 #define OP_Multiply 89 #define OP_Divide 90 #define OP_Remainder 91 #define OP_BitAnd 92 #define OP_BitOr 93 #define OP_BitNot 94 #define OP_ShiftLeft 95 #define OP_ShiftRight 96 #define OP_AbsValue 97 #define OP_Eq 98 #define OP_Ne 99 #define OP_Lt 100 #define OP_Le 101 #define OP_Gt 102 #define OP_Ge 103 #define OP_IsNull 104 #define OP_NotNull 105 #define OP_Negative 106 #define OP_And 107 #define OP_Or 108 #define OP_Not 109 #define OP_Concat 110 #define OP_Noop 111 #define OP_Function 112 #define OP_Limit 113 #define OP_PushList 114 #define OP_PopList 115 #define OP_MAX 115 /* ** Prototypes for the VDBE interface. See comments on the implementation ** for a description of what each of these routines does. */ Vdbe *sqliteVdbeCreate(sqlite*); void sqliteVdbeCreateCallback(Vdbe*, int*); |
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************************************************************************* ** Header file for the Virtual DataBase Engine (VDBE) ** ** This header defines the interface to the virtual database engine ** or VDBE. The VDBE implements an abstract machine that runs a ** simple program to access and modify the underlying database. ** ** $Id: vdbe.h,v 1.52 2002/05/23 22:07:03 drh Exp $ */ #ifndef _SQLITE_VDBE_H_ #define _SQLITE_VDBE_H_ #include <stdio.h> /* ** A single VDBE is an opaque structure named "Vdbe". Only routines ................................................................................ #define OP_MemLoad 42 #define OP_MemStore 43 #define OP_ListWrite 44 #define OP_ListRewind 45 #define OP_ListRead 46 #define OP_ListReset 47 #define OP_ListPush 48 #define OP_ListPop 49 #define OP_SortPut 50 #define OP_SortMakeRec 51 #define OP_SortMakeKey 52 #define OP_Sort 53 #define OP_SortNext 54 #define OP_SortCallback 55 #define OP_SortReset 56 #define OP_FileOpen 57 #define OP_FileRead 58 #define OP_FileColumn 59 #define OP_AggReset 60 #define OP_AggFocus 61 #define OP_AggNext 62 #define OP_AggSet 63 #define OP_AggGet 64 #define OP_AggFunc 65 #define OP_AggInit 66 #define OP_AggPush 67 #define OP_AggPop 68 #define OP_SetInsert 69 #define OP_SetFound 70 #define OP_SetNotFound 71 #define OP_MakeRecord 72 #define OP_MakeKey 73 #define OP_MakeIdxKey 74 #define OP_IncrKey 75 #define OP_Goto 76 #define OP_If 77 #define OP_Halt 78 #define OP_ColumnCount 79 #define OP_ColumnName 80 #define OP_Callback 81 #define OP_NullCallback 82 #define OP_Integer 83 #define OP_String 84 #define OP_Pop 85 #define OP_Dup 86 #define OP_Pull 87 #define OP_Push 88 #define OP_MustBeInt 89 #define OP_Add 90 #define OP_AddImm 91 #define OP_Subtract 92 #define OP_Multiply 93 #define OP_Divide 94 #define OP_Remainder 95 #define OP_BitAnd 96 #define OP_BitOr 97 #define OP_BitNot 98 #define OP_ShiftLeft 99 #define OP_ShiftRight 100 #define OP_AbsValue 101 #define OP_Eq 102 #define OP_Ne 103 #define OP_Lt 104 #define OP_Le 105 #define OP_Gt 106 #define OP_Ge 107 #define OP_IsNull 108 #define OP_NotNull 109 #define OP_Negative 110 #define OP_And 111 #define OP_Or 112 #define OP_Not 113 #define OP_Concat 114 #define OP_Noop 115 #define OP_Function 116 #define OP_Limit 117 #define OP_MAX 117 /* ** Prototypes for the VDBE interface. See comments on the implementation ** for a description of what each of these routines does. */ Vdbe *sqliteVdbeCreate(sqlite*); void sqliteVdbeCreateCallback(Vdbe*, int*); |