Ruby: Generate/modify Ruby source files from within Ruby



What is the most reliable way to generate and/or parse and modify a Ruby source file from within ruby?


That is, I want to e.g. create a new ruby source file or change a few lines of code in a class in a source file to e.g. add or remove methods or calls or whatever.


Is there a library for this perhaps?


Related to : Ruby: Generate/modify Ruby source files from within Ruby
hubris fails to install with: Missing C libraries: ruby, ruby, ruby
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I am desperately trying to install Hubris but the installation fails whenever I run "cabal install".


Link to Hurbis:
https://github.com/mwotton/Hubris/tree/master/Haskell


Link to the Cabal file:
https://github.com/mwotton/Hubris/blob/master/Haskell/hubris.cabal


The cabal command that fails is:


cabal install --extra-include-dirs=/usr/include/ruby-1.9.1/x86_64-linux --extra-include-dirs=/usr/include/ruby-1.9.1 --extra-lib-dirs=/usr/lib --user --enable-shared --with-ghc=/usr/local/bin/ghc

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Resolving dependencies..
In the C source code of Ruby, where is the Ruby operator `=` defined?
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I'd like to read the logic code of =, but can't find it.


UPDATE:


I found the test_multi method text/ruby/test_assignment.rb. It's Ruby code, but seems will let me to the destination.


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UPDATE:


I found keywords "MASGN" and led me to


compile_massign(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE *node, int poped) in compile.c


http://github.com/ruby/ruby/commit/e39eb9dab50eaa681467e51145b37cdc11667830#diff-2


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I'm trying to generate a line chart with data I take from a database.


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| date | estimated progress | real progress |
| 2012-08-01 | 0.0 |
How can I programatically call the ruby debugger from within a ruby program in Ruby 1.9?
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I am writing a web based debugger for Ruby, but in order to do this I need to be able to call the Ruby debugger from within a Ruby program on the server side. Has this ever been done? Is this even possible?


The end product being built will allow Ruby code to be edited, executed and stepped through using just a web browser. The ruby code that is to be debugged will be "eval"ed on the server side.


I have since been pointed in the right direction by one of the stackoverflow users who has suggested using popen or expect. I have tried both of these now but have encountered the following problems:


popen: When waiting for the console yo

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I have a ruby on rails project with scaffolding , views, layouts, models and such. I also have some standalone ruby (.rb) files which i would like to include in my afforementioned project. Is it possible to simply call these methods defined in these rb files by placing them somewhere and calling them from the controller or so?


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Any assistance would be highly appreciated thanks


Ruby: Generate/modify Ruby source files from within Ruby
Programming Languages

What is the most reliable way to generate and/or parse and modify a Ruby source file from within ruby?


That is, I want to e.g. create a new ruby source file or change a few lines of code in a class in a source file to e.g. add or remove methods or calls or whatever.


Is there a library for this perhaps?



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