Class: Simrpc::Schema::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/simrpc/schema.rb

Overview

parse classes, methods, and data out of a xml definition

Class Method Summary collapse

Class Method Details

.parse(args = {}) ⇒ Object

Parse and return a SchemaDef. Specify :schema argument containing xml schema to parse or :file containing location of file containing xml schema



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# File 'lib/simrpc/schema.rb', line 339

def self.parse(args = {})
   if(!args[:schema].nil?)
      schema = args[:schema]
   elsif(!args[:file].nil?)
      schema = File.new(args[:file], "r")
   end

   schema_def = SchemaDef.new

   unless schema.nil? || schema == ""
      doc = REXML::Document.new(schema)
      # grab each method definition
      doc.elements.each('schema/method') do |ele|
         method = MethodDef.new
         method.name = ele.attributes["name"]
         Logger.debug "parsed schema method #{method.name}"

         ele.elements.each("param") do |param|
           param = _parse_data_def(param)
           method.parameters.push param
           Logger.debug "    parameter #{param.name}"
         end

         ele.elements.each("return_value") do |rv|
           rv = _parse_data_def(rv)
           method.return_values.push rv
           Logger.debug "    return_value #{rv.name}"
         end

         schema_def.methods.push method
      end

      # grab each class definition
      doc.elements.each('schema/class') do |ele|
         cl = ClassDef.new
         cl.name = ele.attributes["name"]
         cl.inherits = ele.attributes["inherits"]
         Logger.debug "parsed schema class #{cl.name}"

         ele.elements.each("member") do |mem|
           mem = _parse_data_def(mem)
           cl.members.push mem
           Logger.debug "    member #{mem.name}"
         end

         schema_def.classes.push cl
      end
   end
   return schema_def
end