| 1 |
This week I focused on improving the parser grammar . Petteri and I |
| 2 |
finally decide to remove the global backtracking. We didn’t plan to do |
| 3 |
it at first because it would cost a lot of time. We thought that was not |
| 4 |
something required for metadata generation. However, many stories are |
| 5 |
blocked due to the limitation of parser grammar. We have to remove |
| 6 |
backtracking so that semantic predicate can work for the grammar. |
| 7 |
Although doing it is quite difficult and will cost a lot of time, we |
| 8 |
will get a cleaner and much faster grammar when it’s done. It is the |
| 9 |
thing that we should do sooner or later anyway. |
| 10 |
|
| 11 |
These are what I have done in the past week: |
| 12 |
|
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Used bash to verify unit tests |
| 14 |
Supported thread safety |
| 15 |
Turned off backtracking for the command rules |
| 16 |
Left factored the rules for pipeline and function definition |
| 17 |
Improved double quoted string handling |
| 18 |
Worked on upgrading to ANTLR 3.4 |
| 19 |
Started working on removing global backtracking |
| 20 |
|
| 21 |
Note that we support thread safety now and our version of instruo can |
| 22 |
finish its work in less than 1 minute. We still haven’t upgraded to |
| 23 |
ANTLR 3.4 because of some upstream bugs. The process might take longer. |
| 24 |
|
| 25 |
In the next few weeks, I will mainly focus on one story: removing global |
| 26 |
backtracking. I hope it can be done in two weeks. |
| 27 |
|
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-- |
| 29 |
Best wishes, |
| 30 |
Mu Qiao |
| 31 |
GnuPG fingerprint: 92B1 B0C4 8D14 F8C4 EFA5 3ACC 30B3 0DE4 17B1 57E9 |
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