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Results tagged with context-free
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user 54953
Questions about the set of languages (equivalently) described by context-free grammars or accepted by (non-deterministic) pushdown automata.
6
votes
0
answers
925
views
Which programming languages have a syntax that can be described by deterministic context-fre...
This question asks which programming languages have a syntax that cannot be described by deterministic context-free grammars - the answer is "Many [...] including Algol 60, C, and C++".
Until recentl …
- 151
1
vote
1
answer
40
views
Detect (indirect) left-recursion in a context-free grammar?
Given a context-free grammar:
A -> α0 | α1 | ...
B -> β0 | β1 | ...
...
It's straightforward to determine whether the grammar is directly left-recursive - it is, if any of the αi begin with A, or any …
- 151
0
votes
2
answers
29
views
Does a language recognizer require an unambiguous context-free grammar?
The reference manual for Lua contains a complete EBNF grammar for the language. However, it's simplified compared to the grammar used by the actual Lua parser.
In particular, the simplified grammar is …
- 151