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Remove the ExprSpan object. Instead, keep track of the test of subphrases in

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the parse using the "scanpt" non-terminal.

FossilOrigin-Name: 3eab7bdc44e0878b83dc86f27058a40c2ffafeacadc566f03693f6dc7e40a504
This commit is contained in:
drh
2017-12-24 00:18:47 +00:00
parent 88a921ce60
commit 1be266ba08
6 changed files with 207 additions and 274 deletions
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11
src/expr.c
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@@ -1654,17 +1654,20 @@ void sqlite3ExprListSetName(
void sqlite3ExprListSetSpan(
Parse *pParse, /* Parsing context */
ExprList *pList, /* List to which to add the span. */
ExprSpan *pSpan /* The span to be added */
const char *zStart, /* Start of the span */
const char *zEnd /* End of the span */
){
sqlite3 *db = pParse->db;
assert( pList!=0 || db->mallocFailed!=0 );
if( pList ){
struct ExprList_item *pItem = &pList->a[pList->nExpr-1];
int n;
assert( pList->nExpr>0 );
assert( db->mallocFailed || pItem->pExpr==pSpan->pExpr );
sqlite3DbFree(db, pItem->zSpan);
pItem->zSpan = sqlite3DbStrNDup(db, (char*)pSpan->zStart,
(int)(pSpan->zEnd - pSpan->zStart));
while( sqlite3Isspace(zStart[0]) ) zStart++;
n = (int)(zEnd - zStart);
while( n>0 && sqlite3Isspace(zStart[n-1]) ) n--;
pItem->zSpan = sqlite3DbStrNDup(db, zStart, n);
}
}