diff options
Diffstat (limited to 'tool/lemon.c')
| -rw-r--r-- | tool/lemon.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tool/lemon.c b/tool/lemon.c index df758a5da..0fa3d63b4 100644 --- a/tool/lemon.c +++ b/tool/lemon.c @@ -263,7 +263,8 @@ struct symbol { int useCnt; /* Number of times used */ char *destructor; /* Code which executes whenever this symbol is ** popped from the stack during error processing */ - int destLineno; /* Line number for start of destructor */ + int destLineno; /* Line number for start of destructor. Set to + ** -1 for duplicate destructors. */ char *datatype; /* The data type of information held by this ** object. Only used if type==NONTERMINAL */ int dtnum; /* The data type number. In the parser, the value @@ -4385,6 +4386,7 @@ void ReportTable( for(i=0; i<lemp->nsymbol; i++){ struct symbol *sp = lemp->symbols[i]; if( sp==0 || sp->type==TERMINAL || sp->destructor==0 ) continue; + if( sp->destLineno<0 ) continue; /* Already emitted */ fprintf(out," case %d: /* %s */\n", sp->index, sp->name); lineno++; /* Combine duplicate destructors into a single case */ @@ -4395,7 +4397,7 @@ void ReportTable( && strcmp(sp->destructor,sp2->destructor)==0 ){ fprintf(out," case %d: /* %s */\n", sp2->index, sp2->name); lineno++; - sp2->destructor = 0; + sp2->destLineno = -1; /* Avoid emitting this destructor again */ } } |