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picoe / Eto.Parse

Recursive descent LL(k) parser for .NET with Fluent API, BNF, EBNF and Gold Grammars
MIT License
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Character ranges in EBNF grammar do not include the last character in each range #33

Closed mzabsky closed 4 years ago

mzabsky commented 7 years ago

See the code in this gist (to run it, just add Eto.Parse 1.4.0.0 from NuGet).

It fails to recognize the string and prints:

a,b,c,d,e,A,B,C,D,E,0,1,2,3,4,5,6,7,8 ChildIndex=0, Context=">>>ffFF09"

F, f and 9 are missing from the character set.

In my grammar, I have replaced character ranges with character lists and it works correctly.

tf3pm commented 7 years ago

Grammar.cs, line 220: for (char i = charRange.Start; i <= charRange.End; i++)