Question 1

How do I handle left recursion in mpc?

Accepted Answer

mpc cannot parse left-recursive grammars; you must rewrite them by factoring out common prefixes or using iterative constructs, as explained in the limitations section with examples.

Question 2

mpc vs Cesium3 for C parser combinators?

Accepted Answer

mpc avoids dependencies like Boehm GC and setjmp/longjmp, offering a more self-contained solution, but Cesium3 might have different trade-offs in features or performance for specific use cases.

Question 3

How to build a JSON parser with mpc?

Accepted Answer

Use combinators or mpca_lang to define grammar rules for JSON structures, then apply functions to construct ASTs or direct values, similar to the maths language case study but adapted for JSON syntax.

Question 4

Does mpc support error recovery or incremental parsing?

Accepted Answer

mpc provides basic error reporting but lacks built-in error recovery mechanisms; parsing typically stops on failure, so robust grammars must be designed to minimize errors.

Question 5

Can mpc be used for tokenizing source code efficiently?

Accepted Answer

Yes, by defining token parsers with regular expressions and using mpc_many with apply functions, as demonstrated in the tokenizer case study, but performance may vary with large inputs.

Question 6

What are the memory management pitfalls in mpc?

Accepted Answer

Users must carefully provide destructors for custom types to avoid leaks, especially with combinators like mpc_and that require destructors for partial results, as highlighted in the combinator documentation.

mpc

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