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make h_lrengine_step a void function again

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This commit is contained in:
Sven M. Hallberg 2013-06-21 18:46:16 +02:00
parent bf3e3c162e
commit ec88580b22
4 changed files with 65 additions and 40 deletions
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5
src/backends/lr0.c
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@ -171,6 +171,11 @@ HLRTable *h_lr0_table(HCFGrammar *g, const HLRDFA *dfa)
// remember start symbol
table->start = g->start;
// add dummy shift entry for the start symbol so h_lrengine_step can always
// find a shift.
// NB: nextstate=0 is used for the "victory condition" by h_lrengine_result.
h_hashtable_put(table->rows[0], g->start, h_shift_action(arena, 0));
// add shift entries
for(HSlistNode *x = dfa->transitions->head; x; x = x->next) {
// for each transition x-A->y, add "shift, goto y" to table entry (x,A)