Class: Inline::Fortran

Inherits:
Object
  • Object
show all
Defined in:
lib/inline/fortran.rb

Constant Summary collapse

VERSION = 
'1.0.0'

Instance Method Summary collapse

Constructor Details

#initialize(mod) ⇒ Fortran

Returns a new instance of Fortran.



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# File 'lib/inline/fortran.rb', line 11

def initialize(mod)
  @mod = mod
  @functions = {}
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/inline/fortran.rb', line 24

def build
  c_builder = Inline::C.new(@mod)

  src_name = "#{Inline.directory}/#{@mod}.f90"
  File.open(src_name, "w") do |f|
    @functions.each do |name, (signature, src)|

      src.sub!(/#{name}/, "f_#{name}")
      
      args = []
      call_args = []
      return_type = signature.shift

      signature.each_with_index do |arg_type, i|
        args << "#{arg_type} arg#{i}"
        call_args << "&arg#{i}"
      end
      
      c_func = "#{return_type} #{name}(#{args.join(', ')})"
      c_builder.c <<-EOF
        #{c_func} {
          f_#{name}(#{call_args.join(', ')});
        }
      EOF

      f.puts src
      f.puts
    end
  end

  Dir.chdir File.dirname(src_name) do
    cmd = "g95 -c -fno-underscoring #{File.basename(src_name)}"
    $stderr.puts cmd if $DEBUG
    system cmd
    c_builder.add_link_flags "#{@mod}.o"
    c_builder.add_link_flags "-lf95"
    c_builder.build
    c_builder.load
  end
end

#load ⇒ Object 



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# File 'lib/inline/fortran.rb', line 64

def load
end

#load_cache ⇒ Object 



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# File 'lib/inline/fortran.rb', line 20

def load_cache
  return false
end

#subroutine(subroutine_name, c_signature, src) ⇒ Object 



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# File 'lib/inline/fortran.rb', line 16

def subroutine(subroutine_name, c_signature, src)
  @functions[subroutine_name] = [c_signature, src]
end