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Use the VList object to replace Parse.azVar for tracking the mapping between

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SQL parameter names and parameter numbers.  There is a performance
improvement, though there are still a few hiccups in the current code.

FossilOrigin-Name: 68ecafa1425a41358c88f41efea3262f1b4490f2
This commit is contained in:
drh
2016-12-23 03:59:31 +00:00
parent 344a1bf133
commit 9bf755cc44
10 changed files with 139 additions and 71 deletions
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21
src/vdbeapi.c
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@@ -1470,10 +1470,8 @@ int sqlite3_bind_parameter_count(sqlite3_stmt *pStmt){
*/
const char *sqlite3_bind_parameter_name(sqlite3_stmt *pStmt, int i){
Vdbe *p = (Vdbe*)pStmt;
if( p==0 || i<1 || i>p->nzVar ){
return 0;
}
return p->azVar[i-1];
if( p==0 ) return 0;
return sqlite3VListNumToName(p->pVList, i);
}
/*
@@ -1482,19 +1480,8 @@ const char *sqlite3_bind_parameter_name(sqlite3_stmt *pStmt, int i){
** return 0.
*/
int sqlite3VdbeParameterIndex(Vdbe *p, const char *zName, int nName){
int i;
if( p==0 ){
return 0;
}
if( zName ){
for(i=0; i<p->nzVar; i++){
const char *z = p->azVar[i];
if( z && strncmp(z,zName,nName)==0 && z[nName]==0 ){
return i+1;
}
}
}
return 0;
if( p==0 || zName==0 ) return 0;
return sqlite3VListNameToNum(p->pVList, zName, nName);
}
int sqlite3_bind_parameter_index(sqlite3_stmt *pStmt, const char *zName){
return sqlite3VdbeParameterIndex((Vdbe*)pStmt, zName, sqlite3Strlen30(zName));