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Overview
Comment:Fix an unreachable branch in sqlite3ParserFallback()
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SHA3-256: e059178b47109caee2c2211b2db6e594c014af636677118a64e10edf01ac017d
User & Date: drh 2019-08-28 11:49:45.616
Context
2019-08-29
00:27
Improve Lemon so that it enlarges some of its tables slightly in order to avoid having to index range checks on table lookups for a performance increase. (check-in: 4be6a23a18 user: drh tags: trunk)
2019-08-28
11:49
Fix an unreachable branch in sqlite3ParserFallback() (Closed-Leaf check-in: e059178b47 user: drh tags: lemon-optimization)
11:31
Further improvements to parser speed by enlarging lookup tables to eliminate the need to do range checking on the index prior to lookup. (check-in: 47d3e091ae user: drh tags: lemon-optimization)
Changes
Unified Diff Ignore Whitespace Patch
Changes to tool/lempar.c.
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/*
** Return the fallback token corresponding to canonical token iToken, or
** 0 if iToken has no fallback.
*/
int ParseFallback(int iToken){
#ifdef YYFALLBACK
  if( iToken<(int)(sizeof(yyFallback)/sizeof(yyFallback[0])) ){
    return yyFallback[iToken];
  }
#else
  (void)iToken;
#endif
  return 0;
}








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/*
** Return the fallback token corresponding to canonical token iToken, or
** 0 if iToken has no fallback.
*/
int ParseFallback(int iToken){
#ifdef YYFALLBACK
  assert( iToken<(int)(sizeof(yyFallback)/sizeof(yyFallback[0])) );
  return yyFallback[iToken];

#else
  (void)iToken;
#endif
  return 0;
}