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Questions - bnf

How to describe this event log in formal BNF?

I have a very simple event log format, just I'm having difficulties describing it in BNF (for gocc ). Here is my simple event log format: timestamp nested-event-A Running timestamp Start of nested-eve...
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xpt

grammar

bnf

ebnf

gocc

Votes: 0

Answers: 2

Latest Answer

Regarding the productions of EventLog, your choice must depend on the knowledge whether if the starting event is always a nested one or can be unested. If your log consist with many logs of any kind o...
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rikyeah

Using Perl look-ahead assertion to find individual list

Given a list like this: direct_SQL_statement ::= directly_executable_statement semicolon directly_executable_statement ::= direct_SQL_data_statement | SQL_schema_statement | SQL_transaction...
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xpt

regex

perl

bnf

Votes: 0

Answers: 1

Latest Answer

With possible comments (/* ... */) that need be omitted: perl -0777 -wnE'say for m{(.*?::=.*?)\n (?: \n+ | (?:/\*.*?\*/) | \z)}gsx' bnf.txt This captures a line with ::= and all that follows it up to...
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zdim

How can EBNF or BNF be parsed?

Following up on Converting W3C's EBNF to BNF With a grammar defined as enclosed below, how can it know when a grammar rule is ended? E.g., line 3 & 4, Production* Production How can the gramm...
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xpt

recursion

bnf

ebnf

Votes: 0

Answers: 0

Converting W3C's EBNF to BNF

Following up on Converting EBNF to BNF, which has a rule of: From EBNF to BNF For building parsers (especially bottom-up) a BNF grammar is often better, than EBNF. But it's easy to convert an EBNF Gr...
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xpt

bnf

ebnf

recursive-descent

Votes: 0

Answers: 0

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