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Re^5: Writing a Programming Language in Perl

by ikegami (Pope)
on Oct 25, 2011 at 22:32 UTC ( #933723=note: print w/replies, xml ) Need Help??


in reply to Re^4: Writing a Programming Language in Perl
in thread Writing a Programming Language 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.
  • Comment on Re^5: Writing a Programming Language in Perl

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Re^6: Writing a Programming Language in Perl
by programmer99 (Novice) on Oct 25, 2011 at 22:56 UTC
    So the parsed code goes through a compiler? And then it is executed?

      A compiler (or interpreter) has a few parts.

      A parser converts a file full of source code into a data structure.

      An interpreter traverses that data structure and executes the appropriate commands for each significant node in the structure.

      A compiler transforms that data structure and emits something else. Perhaps this other is object code for a specific processor or perhaps it's binary code for a virtual machine or perhaps it's source code for another language entirely.

      If you look at compiling and implementing languages this way, you already know the general technique. (everything is a compiler).


      Improve your skills with Modern Perl: the free book.

        So what code is needed to start what I am trying to do?

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