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Merge all changes from the weak-fallback branch except those related to the

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weak-fallback feature itself.

FossilOrigin-Name: aad718fb1afacf1c921966796ab1e149207c31b16409c5672f0371f4fb9d6565
This commit is contained in:
dan
2018-06-30 19:12:36 +00:00
parent 01e1229063 6e2210e0a1
commit 5001b3314d
8 changed files with 401 additions and 136 deletions
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18
tool/lempar.c
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@ -90,6 +90,7 @@
/************* Begin control #defines *****************************************/
%%
/************* End control #defines *******************************************/
#define YY_NLOOKAHEAD ((int)(sizeof(yy_lookahead)/sizeof(yy_lookahead[0])))
/* Define the yytestcase() macro to be a no-op if is not already defined
** otherwise.
@ -519,11 +520,11 @@ static YYACTIONTYPE yy_find_shift_action(
do{
i = yy_shift_ofst[stateno];
assert( i>=0 );
assert( i+YYNTOKEN<=(int)sizeof(yy_lookahead)/sizeof(yy_lookahead[0]) );
/* assert( i+YYNTOKEN<=(int)YY_NLOOKAHEAD ); */
assert( iLookAhead!=YYNOCODE );
assert( iLookAhead < YYNTOKEN );
i += iLookAhead;
if( yy_lookahead[i]!=iLookAhead ){
if( i>=YY_NLOOKAHEAD || yy_lookahead[i]!=iLookAhead ){
#ifdef YYFALLBACK
YYCODETYPE iFallback; /* Fallback token */
if( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0])
@ -1057,3 +1058,16 @@ void Parse(
#endif
return;
}
/*
** Return the fallback token corresponding to canonical token iToken, or
** 0 if iToken has no fallback.
*/
int ParseFallback(int iToken){
#ifdef YYFALLBACK
if( iToken<sizeof(yyFallback)/sizeof(yyFallback[0]) ){
return yyFallback[iToken];
}
#endif
return 0;
}