add escape sequences in character strings

[Kljunas2]

Standard escape sequences (those used in java) and ability to write bytes directly (\xbb).

[jetomit]

I’m inclined to merge this as it seems useful, but it does change the behavior of the assembler a bit (e.g. for C'\' and C'\\'). @jurem, what do you think?

[jetomit]

Unterminated C' causes an OutOfMemory exception, not sure what goes wrong.

[jurem]

Hi. Thanks! Yes, I think escape seqs support is a useful feature.

Maybe a suggestion not to break the compatibility to any previous assembly code relying on not-escaped strings, a support could be added using two variants:

1. C'...' ... raw strings (as it was originally)
2. C"..." ... strings with escape sequences

You should also probably refactor the actual escaped string parsing (the for loop and big switch) out into a separate function. Maybe add it to the Lexer class, e.g., readEscapedString(char terminator), where terminator is " (double quite as suggested above).

[Kljunas2]

Could I then terminate it with zero byte like C strings, or should I leave users the choice to manually add zero byte if desired?

[jurem]

I guess user should take care for the zero byte terminator if needed. This is still an assembly, don't be too friendly :)

[jurem]

Yes, I guess that's it! Thanks!!!