Embedding Ruby in C++

Posted on January 21st, 2004 by pka
This class embeds the Ruby interpreter in a C++ application

Introduction

Ruby is the interpreted scripting language for quick and easy object-oriented programming. It has many features to process text files and to do system management tasks (as in Perl). It is simple, straight-forward, extensible, and portable.
This class embeds the Ruby interpreter in a C++ application.

Usage examples

  RubyEval& ruby = *RubyEval::instance();

  ruby.eval("puts 'hello ruby'");

  assert( NUM2INT( ruby.eval("1+1") ) == 2 );

  assert(RubyEval::val2str(ruby.eval("'Regexp'.gsub(/x/, 'X')")) == "RegeXp");

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Class documentation


Public Methods
  ~RubyEval ()
void  run_file (const char *filename, ostream &out=cout)
  Run Ruby interpreter with filename.

VALUE  eval (const char *code)
  Evaluate code string.

VALUE  eval (const char *code, ostream &errout)
  Evaluate code string and print errors.

bool  evalOk ()
  Last evaluation was successful.


Static Public Methods
RubyEval *  instance ()
  Singleton Instance.

string  val2str (const VALUE rval)
  Convert Ruby value to string.

string  strval2str (const VALUE rval)
  Convert Ruby string value to string.

void  exception_print (ostream &errout=cerr)
  Get Ruby error/exception info an print it.

string  exception_info ()
  Get Ruby error/exception info as string.

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