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Re^3: Writing a Programming Language in Perl

by ikegami (Pope)
on Oct 25, 2011 at 21:54 UTC ( #933713=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Writing a Programming Language in Perl
in thread Writing a Programming Language in Perl

The grammar of a language defines its syntax. Parsers (e.g. Marpa) take a sequence of bytes, characters or tokens, check if it conforms to the grammar, and assigns meaning to the components of the sequence as per the grammar.

For example, the job of the parser is to receive "a+b*c" and return "a multiplication of ( an addition of ( identifier a ) and (identifier b ) ) and ( identifier c )".


Comment on Re^3: Writing a Programming Language in Perl
Re^4: Writing a Programming Language in Perl
by programmer99 (Novice) on Oct 25, 2011 at 22:30 UTC
    I am extremely greatful of the info that has been givenfrom everyone, really I am. But how does Marpa help me create a language/compiler in Perl?
      You need to be able to parse the code before you can compile or execute it. It helps you by creating the parser for you.
        So the parsed code goes through a compiler? And then it is executed?

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