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Enhance the sqlite3VdbeMultiLoad() interface to automatically generate the

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OP_ResultRow opcode on PRAGMA implementations, for a small reduction in the
library footprint.

FossilOrigin-Name: c46f0f076c674891e20240bad56693d891aedc43004bcf980a5d199515f23413
This commit is contained in:
drh
2017-07-07 16:00:53 +00:00
parent d10866798d
commit 40cf27cb63
4 changed files with 21 additions and 22 deletions
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12
src/vdbeaux.c
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@@ -242,6 +242,9 @@ int sqlite3VdbeLoadString(Vdbe *p, int iDest, const char *zStr){
** "s" character in zTypes[], the register is a string if the argument is
** not NULL, or OP_Null if the value is a null pointer. For each "i" character
** in zTypes[], the register is initialized to an integer.
**
** If the input string does not end with "X" then an OP_ResultRow instruction
** is generated for the values inserted.
*/
void sqlite3VdbeMultiLoad(Vdbe *p, int iDest, const char *zTypes, ...){
va_list ap;
@@ -251,12 +254,15 @@ void sqlite3VdbeMultiLoad(Vdbe *p, int iDest, const char *zTypes, ...){
for(i=0; (c = zTypes[i])!=0; i++){
if( c=='s' ){
const char *z = va_arg(ap, const char*);
sqlite3VdbeAddOp4(p, z==0 ? OP_Null : OP_String8, 0, iDest++, 0, z, 0);
sqlite3VdbeAddOp4(p, z==0 ? OP_Null : OP_String8, 0, iDest+i, 0, z, 0);
}else if( c=='i' ){
sqlite3VdbeAddOp2(p, OP_Integer, va_arg(ap, int), iDest+i);
}else{
assert( c=='i' );
sqlite3VdbeAddOp2(p, OP_Integer, va_arg(ap, int), iDest++);
goto skip_op_resultrow;
}
}
sqlite3VdbeAddOp2(p, OP_ResultRow, iDest, i);
skip_op_resultrow:
va_end(ap);
}