Class: Ruby2CExtension::Plugins::RequireInclude

Inherits:
Ruby2CExtension::Plugin show all
Defined in:
lib/ruby2cext/plugins/require_include.rb

Instance Attribute Summary collapse

Attributes inherited from Ruby2CExtension::Plugin

#compiler

Instance Method Summary collapse

Methods inherited from Ruby2CExtension::Plugin

#global_c_code, #init_c_code

Constructor Details

#initialize(compiler, include_paths, ignore_files = nil) ⇒ RequireInclude

Returns a new instance of RequireInclude.



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# File 'lib/ruby2cext/plugins/require_include.rb', line 8

def initialize(compiler, include_paths, ignore_files = nil)
  super(compiler)
  @include_paths = include_paths
  done = {}
  if ignore_files
    ignore_files.each { |file|
      done[File.expand_path(file)] = true
    }
  end
  compiler.add_preprocessor(:fcall) { |cfun, node|
    hash = node.last
    if hash[:mid] == :require &&
        (args = hash[:args]) &&
        args.first == :array &&
        (args = args.last).size == 1 &&
        Array === args[0] &&
        args[0].first == :str &&
        (file = search_file(args[0].last[:lit]))
      unless done[File.expand_path(file)]
        done[File.expand_path(file)] = true
        cfun.compiler.log "including require'd file: #{file}"
        cfun.instance_eval {
          add_helper "            static NODE * find_top_cref(NODE *cref) {\n              while (cref && cref->nd_next) cref = cref->nd_next;\n              return cref;\n            }\n          EOC\n          c_scope {\n            l \"NODE *top_cref = find_top_cref(\#{get_cref});\"\n            l \"static int done = 0;\"\n            c_if(\"!done\") {\n              l \"done = 1;\"\n              compiler.rb_file_to_toplevel_functions(IO.read(file), file).each { |tlfn|\n                l \"\#{tlfn}(org_ruby_top_self, top_cref);\"\n              }\n            }\n          }\n        }\n      end\n      \"Qtrue\"\n    else\n      node\n    end\n  }\nend\n"

Instance Attribute Details

#include_paths ⇒ Object (readonly)

Returns the value of attribute include_paths.



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# File 'lib/ruby2cext/plugins/require_include.rb', line 6

def include_paths
  @include_paths
end

Instance Method Details

#search_file(req_str) ⇒ Object 



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# File 'lib/ruby2cext/plugins/require_include.rb', line 55

def search_file(req_str)
  req_str = req_str.dup
  unless req_str =~ /\.rb\z/
    req_str << ".rb"
  end
  res = false
  include_paths.map { |path|
    File.join(path, req_str)
  }.find { |file|
    File.exists? file
  }
end