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I am implementing the lexical and syntax analyzer for a c++ like programming language I have the following line in the regular expressions' section in lex file

arithm_op       [/+*%-]
bitwise_op      [&^~|]
punctuators     [()=;{}]

For the following input in the parser file:

int a;
int c;
print(a|c);

The bitwise operator is not matched. The program terminates just before the lex file reaches the '|' symbol in the print statement

I have tried to escape the pipe '|' in the regex but didn't work yet.

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2
  • You don't need to escape | inside []. Commented Apr 28, 2023 at 15:23
  • 1
    Not reproducible -- include a minimal reproducible example Commented Apr 28, 2023 at 23:54
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