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Current File : //proc/thread-self/root/proc/self/root/proc/self/root/opt/alt/ruby19/lib64/ruby/1.9.1/dl/cparser.rb

module DL
  module CParser
    def parse_struct_signature(signature, tymap=nil)
      if( signature.is_a?(String) )
        signature = signature.split(/\s*,\s*/)
      end
      mems = []
      tys  = []
      signature.each{|msig|
        tks = msig.split(/\s+(\*)?/)
        ty = tks[0..-2].join(" ")
        member = tks[-1]

        case ty
        when /\[(\d+)\]/
          n = $1.to_i
          ty.gsub!(/\s*\[\d+\]/,"")
          ty = [ty, n]
        when /\[\]/
          ty.gsub!(/\s*\[\]/, "*")
        end

        case member
        when /\[(\d+)\]/
          ty = [ty, $1.to_i]
          member.gsub!(/\s*\[\d+\]/,"")
        when /\[\]/
          ty = ty + "*"
          member.gsub!(/\s*\[\]/, "")
        end

        mems.push(member)
        tys.push(parse_ctype(ty,tymap))
      }
      return tys, mems
    end

    def parse_signature(signature, tymap=nil)
      tymap ||= {}
      signature = signature.gsub(/\s+/, " ").strip
      case signature
      when /^([\w@\*\s]+)\(([\w\*\s\,\[\]]*)\)$/
        ret = $1
        (args = $2).strip!
        ret = ret.split(/\s+/)
        args = args.split(/\s*,\s*/)
        func = ret.pop
        if( func =~ /^\*/ )
          func.gsub!(/^\*+/,"")
          ret.push("*")
        end
        ret  = ret.join(" ")
        return [func, parse_ctype(ret, tymap), args.collect{|arg| parse_ctype(arg, tymap)}]
      else
        raise(RuntimeError,"can't parse the function prototype: #{signature}")
      end
    end

    def parse_ctype(ty, tymap=nil)
      tymap ||= {}
      case ty
      when Array
        return [parse_ctype(ty[0], tymap), ty[1]]
      when "void"
        return TYPE_VOID
      when "char"
        return TYPE_CHAR
      when "unsigned char"
        return  -TYPE_CHAR
      when "short"
        return TYPE_SHORT
      when "unsigned short"
        return -TYPE_SHORT
      when "int"
        return TYPE_INT
      when "unsigned int", 'uint'
        return -TYPE_INT
      when "long"
        return TYPE_LONG
      when "unsigned long"
        return -TYPE_LONG
      when "long long"
        if( defined?(TYPE_LONG_LONG) )
          return TYPE_LONG_LONG
        else
          raise(RuntimeError, "unsupported type: #{ty}")
        end
      when "unsigned long long"
        if( defined?(TYPE_LONG_LONG) )
          return -TYPE_LONG_LONG
        else
          raise(RuntimeError, "unsupported type: #{ty}")
        end
      when "float"
        return TYPE_FLOAT
      when "double"
        return TYPE_DOUBLE
      when /\*/, /\[\s*\]/
        return TYPE_VOIDP
      else
        if( tymap[ty] )
          return parse_ctype(tymap[ty], tymap)
        else
          raise(DLError, "unknown type: #{ty}")
        end
      end
    end
  end
end

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