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style: more documentation about errs

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Suggested by Angelo Borsotti.
https://lists.gnu.org/r/bug-bison/2014-02/msg00003.html

* src/state.h: here.
This commit is contained in:
Akim Demaille
2020-05-02 08:05:26 +02:00
parent f8ab4d81c0
commit 95bac741c3
1 changed files with 4 additions and 1 deletions
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5
src/state.h
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@@ -67,7 +67,10 @@
Conflict resolution can decide that certain tokens in certain
states should explicitly be errors (for implementing %nonassoc).
For each state, the tokens that are errors for this reason are
recorded in an errs structure, which holds the token numbers.
recorded in an errs structure. The generated parser does not
depend on this errs structure, it is used only in the reports
(*.output, etc.) to describe conflicted actions that have been
discarded.
There is at least one goto transition present in state zero. It
leads to a next-to-final state whose accessing_symbol is the