Comments (7)
Note that collect_tuple
is from itertools
and it allows you to collect an iterator into a tuple.
from chumsky.
Settled for the solution -
choice(vec![
// IO
text::keyword("OUTPUT"),
text::keyword("INPUT"),
text::keyword("OPENFILE"),
text::keyword("CLOSEFILE"),
text::keyword("READFILE"),
text::keyword("WRITEFILE"),
text::keyword("SEEK"),
text::keyword("GETRECORD"),
text::keyword("PUTRECORD"),
text::keyword("READ"),
text::keyword("WRITE"),
text::keyword("APPEND"),
text::keyword("RANDOM"),
// Types
text::keyword("INTEGER"),
text::keyword("REAL"),
text::keyword("BOOLEAN"),
text::keyword("CHAR"),
text::keyword("STRING"),
text::keyword("DATE"),
text::keyword("ARRAY"),
text::keyword("TYPE"),
text::keyword("ENDTYPE"),
// Selection
text::keyword("IF"),
text::keyword("THEN"),
text::keyword("ELSE"),
text::keyword("ENDIF"),
text::keyword("CASE"),
text::keyword("OF"),
text::keyword("OTHERWISE"),
text::keyword("ENDCASE"),
// Loops
text::keyword("FOR"),
text::keyword("TO"),
text::keyword("STEP"),
text::keyword("NEXT"),
text::keyword("ENDFOR"),
text::keyword("REPEAT"),
text::keyword("UNTIL"),
text::keyword("WHILE"),
text::keyword("DO"),
text::keyword("ENDWHILE"),
// Declaration
text::keyword("DECLARE"),
text::keyword("CONSTANT"),
// Operators
text::keyword("MOD"),
text::keyword("DIV"),
text::keyword("AND"),
text::keyword("OR"),
text::keyword("NOT"),
// Functions or Procedures
text::keyword("PROCEDURE"),
text::keyword("ENDPROCEDURE"),
text::keyword("CALL"),
text::keyword("FUNCTION"),
text::keyword("RETURNS"),
text::keyword("BYREF"),
text::keyword("ENDFUNCTION"),
])
.ignored()
This is not optimal since I'm repeating my self with the text::keyword
. Please reply if a better solution comes to mind
from chumsky.
I suspect this may be because choice
is only implemented on tuples up to length 26 - if you use a normal collect into a Vec
I imagine that should work in your original example.
from chumsky.
Type inference doesn't work well when collecting into a Vec. Also I'm having cargo check performance issues while working with chumsky. Is this common?
from chumsky.
- You should be able to help type inference out with something like
.collect::<Vec<_>>()
. - Because combinators can end up creating very large types, complex parsers complicate trait solving greatly for the compiler, inflating compile times. This can be reduced by interspersing dynamic dispatch at different points in your parser via the
.boxed()
combinator (#415 is a good example of this).
from chumsky.
I see, thank you for the advice!
from chumsky.
There's also a section in the guide for 1.0 about reducing compilation times, if it helps!
from chumsky.
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