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Version 2.0.6 (CVS 291)

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FossilOrigin-Name: 8467d84fc6e67bd93051f54338a8f6c9b1711ee1
This commit is contained in:
drh
2001-10-19 16:44:56 +00:00
parent 98808babd3
commit 6a535340bc
16 changed files with 399 additions and 227 deletions
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55
src/vdbe.c
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@@ -30,7 +30,7 @@
** But other routines are also provided to help in building up
** a program instruction by instruction.
**
** $Id: vdbe.c,v 1.86 2001/10/18 12:34:48 drh Exp $
** $Id: vdbe.c,v 1.87 2001/10/19 16:44:57 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -202,6 +202,7 @@ struct Vdbe {
int nSet; /* Number of sets allocated */
Set *aSet; /* An array of sets */
int nFetch; /* Number of OP_Fetch instructions executed */
int nCallback; /* Number of callbacks invoked so far */
};
/*
@@ -811,17 +812,17 @@ static char *zOpName[] = { 0,
"AggGet", "SetInsert", "SetFound", "SetNotFound",
"SetClear", "MakeRecord", "MakeKey", "MakeIdxKey",
"Goto", "If", "Halt", "ColumnCount",
"ColumnName", "Callback", "Integer", "String",
"Null", "Pop", "Dup", "Pull",
"Add", "AddImm", "Subtract", "Multiply",
"Divide", "Remainder", "BitAnd", "BitOr",
"BitNot", "ShiftLeft", "ShiftRight", "AbsValue",
"Precision", "Min", "Max", "Like",
"Glob", "Eq", "Ne", "Lt",
"Le", "Gt", "Ge", "IsNull",
"NotNull", "Negative", "And", "Or",
"Not", "Concat", "Noop", "Strlen",
"Substr",
"ColumnName", "Callback", "NullCallback", "Integer",
"String", "Null", "Pop", "Dup",
"Pull", "Add", "AddImm", "Subtract",
"Multiply", "Divide", "Remainder", "BitAnd",
"BitOr", "BitNot", "ShiftLeft", "ShiftRight",
"AbsValue", "Precision", "Min", "Max",
"Like", "Glob", "Eq", "Ne",
"Lt", "Le", "Gt", "Ge",
"IsNull", "NotNull", "Negative", "And",
"Or", "Not", "Concat", "Noop",
"Strlen", "Substr",
};
/*
@@ -1194,6 +1195,7 @@ case OP_ColumnCount: {
p->azColName = sqliteRealloc(p->azColName, (pOp->p1+1)*sizeof(char*));
if( p->azColName==0 ) goto no_mem;
p->azColName[pOp->p1] = 0;
p->nCallback = 0;
break;
}
@@ -1207,6 +1209,7 @@ case OP_ColumnCount: {
*/
case OP_ColumnName: {
p->azColName[pOp->p1] = pOp->p3 ? pOp->p3 : "";
p->nCallback = 0;
break;
}
@@ -1231,11 +1234,38 @@ case OP_Callback: {
if( xCallback(pArg, pOp->p1, &zStack[i], p->azColName)!=0 ){
rc = SQLITE_ABORT;
}
p->nCallback++;
}
PopStack(p, pOp->p1);
break;
}
/* Opcode: NullCallback P1 * *
**
** Invoke the callback function once with the 2nd argument (the
** number of columns) equal to P1 and with the 4th argument (the
** names of the columns) set according to prior OP_ColumnName and
** OP_ColumnCount instructions. This is all like the regular
** OP_Callback or OP_SortCallback opcodes. But the 3rd argument
** which normally contains a pointer to an array of pointers to
** data is NULL.
**
** The callback is only invoked if there have been no prior calls
** to OP_Callback or OP_SortCallback.
**
** This opcode is used to report the number and names of columns
** in cases where the result set is empty.
*/
case OP_NullCallback: {
if( xCallback!=0 && p->nCallback==0 ){
if( xCallback(pArg, pOp->p1, 0, p->azColName)!=0 ){
rc = SQLITE_ABORT;
}
p->nCallback++;
}
break;
}
/* Opcode: Concat P1 P2 P3
**
** Look at the first P1 elements of the stack. Append them all
@@ -3376,6 +3406,7 @@ case OP_SortCallback: {
if( xCallback(pArg, pOp->p1, (char**)zStack[i], p->azColName) ){
rc = SQLITE_ABORT;
}
p->nCallback++;
}
POPSTACK;
break;