Class: GameMachine::Protobuf::Generate

Inherits:
Object
  • Object
show all
Defined in:
lib/game_machine/protobuf/generate.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app_root) ⇒ Generate

Returns a new instance of Generate.



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# File 'lib/game_machine/protobuf/generate.rb', line 17

def initialize(app_root)
  @app_root = app_root
end

Instance Attribute Details

#app_root ⇒ Object (readonly)

Returns the value of attribute app_root.



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# File 'lib/game_machine/protobuf/generate.rb', line 16

def app_root
  @app_root
end

Class Method Details

.compile(path) ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 25

def self.compile(path)
  loader = CachingProtoLoader.new
  file = java.io.File.new(path)
  ProtoUtil.parseProto(file)
end

Instance Method Details

#classname(name) ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 164

def classname(name)
  name.slice(0,1).capitalize + name.slice(1..-1)
end

#config_path ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 47

def config_path
  File.join(app_root,'config')
end

#erb_template ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 31

def erb_template
  File.join(java_root,'component.erb')
end

#generate ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 168

def generate
  FileUtils.rm Dir.glob(File.join(java_src,'*.java'))
  game_protofile = File.join(config_path,'game_messages.proto')
  protofile = File.join(config_path,'messages.proto')

  if File.exists?(game_protofile)
    game_messages = File.read(game_protofile)
    game_messages = game_messages.gsub('local_persistent_message','message')
    game_messages = game_messages.gsub('local_message','message')
    game_messages = game_messages.gsub('persistent_message','message')
    gm = Protobuf::GameMessages.new(game_protofile)
    persistent_messages = gm.persistent_messages
    entity_fields = gm.create_entity_fields
    game_entity_fields = entity_fields.join("\n")
  else
    game_messages = ''
    game_entity_fields = ''
    persistent_messages = []
  end
  messages = File.read(protofile)

  combined_messages = messages.sub('//GAME_MESSAGES',game_messages)
  combined_messages = combined_messages.sub('//GAME_ENTITY_MESSAGES',game_entity_fields)
  combined_messages_protofile = File.join(config_path,'combined_messages.proto')

  File.open(combined_messages_protofile,'w') {|f| f.write(combined_messages)}

  # test message defintion validity
  #tmp_dir = File.join('/tmp/proto_test')
  #FileUtils.rm_rf(tmp_dir)
  #FileUtils.mkdir_p(tmp_dir)
  #unless system("protoc #{combined_messages_protofile} --java_out=#{tmp_dir}")
  #  return false
  #end

  # This just stops generating code when it hits an error, but does not
  # throw an exception
  proto = self.class.compile(combined_messages_protofile)

  write_components(proto,persistent_messages)
  #FileUtils.rm(combined_messages_protofile)
  combined_messages
end

#get_type(field) ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 150

def get_type(field)
  if field.getJavaType.to_s == 'int'
    return 'Integer'
  elsif ['boolean','double','float','long'].include?(field.getJavaType.to_s)
    return field.getJavaType.to_s.clone.capitalize
  else
    return field.getJavaType
  end
end

#java_root ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 21

def java_root
  ENV['JAVA_ROOT']
end

#java_src ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 43

def java_src
  File.join(java_root,'src','main','java','GameMachine', 'Messages')
end

#model_src ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 39

def model_src
  File.join(java_root,'src','main','java','com', 'game_machine','orm','models')
end

#model_template ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 35

def model_template
  File.join(java_root,'model.erb')
end

#simple_value?(field) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/game_machine/protobuf/generate.rb', line 142

def simple_value?(field)
  if ['boolean','double','float','long','int','String'].include?(field.getJavaType.to_s)
    true
  else
    false
  end
end

#sql_column_name(klass, field) ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 92

def sql_column_name(klass,field)
  "#{klass.underscore}_#{field.name.underscore}"
end

#sql_field(klass, field, dbtype, force_null = false) ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 96

def sql_field(klass,field,dbtype,force_null=false)
  if dbtype == 'mysql'
    txt = case field.getJavaType.to_s
    when 'boolean'
      "`#{sql_column_name(klass,field)}` tinyint(4)"
    when 'double'
      "`#{sql_column_name(klass,field)}` double"
    when 'float'
      "`#{sql_column_name(klass,field)}` float"
    when 'long'
      "`#{sql_column_name(klass,field)}` int(11)"
    when 'int'
      "`#{sql_column_name(klass,field)}` int(11)"
    when 'String'
      "`#{sql_column_name(klass,field)}` varchar(128)"
    end
  elsif dbtype == 'postgres'
    txt = case field.getJavaType.to_s
    when 'boolean'
      "#{sql_column_name(klass,field)} integer"
    when 'double'
      "#{sql_column_name(klass,field)} double precision"
    when 'float'
      "#{sql_column_name(klass,field)} double precision"
    when 'long'
      "#{sql_column_name(klass,field)} integer"
    when 'int'
      "#{sql_column_name(klass,field)} integer"
    when 'String'
      "#{sql_column_name(klass,field)} character varying(128)"
    end
  end

  return nil if txt.nil?

  if force_null
    return "#{txt} DEFAULT NULL,"
  end

  if field.is_required
    txt = "#{txt} NOT NULL,"
  else
    txt = "#{txt} DEFAULT NULL,"
  end
end

#varname(name) ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 160

def varname(name)
  name.slice(0,1).downcase + name.slice(1..-1)
end

#write_components(proto, persistent_messages) ⇒ Object 



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# File 'lib/game_machine/protobuf/generate.rb', line 51

def write_components(proto,persistent_messages)
  messages = proto.getMessages.reject {|message| message.getName == 'Components'}
  FileUtils.mkdir_p(java_src)
  FileUtils.mkdir_p(model_src)
  message_names = proto.getMessages.map {|m| m.get_name}
  messages_index = proto.getMessages.each_with_object({}) {|v,res| res[v.getName] = v}

  proto.getMessages.each do |message|
    message_fields = []
    message.get_fields.each do |field|
      if message_names.include?(field.getJavaType.to_s) && !field.is_repeated
        message_fields << field.get_java_type.to_s
      end
    end
    unless message_fields.empty?
      #puts "#{message.getName} #{message_fields.inspect}"
    end

    klass = message.getName
    persistent = persistent_messages.include?(klass)
    #puts "Message: #{message.getName}"
    out = ERB.new(File.read(erb_template),0,'>').result(binding)
    out = out.gsub(/^(\s*\r\n){2,}/,"\r\n")
    src_file = File.join(java_src,"#{message.getName}.java")
    File.open(src_file,'w') {|f| f.write out}

    if persistent
      out = ERB.new(File.read(model_template),0,'<>').result(binding)
      out = out.gsub(/^(\s*\r\n){2,}/,"\r\n")
      out = out.gsub(/^(\s*\n){2,}/,"\n")
      src_file = File.join(model_src,"#{message.getName}.java")
      File.open(src_file,'w') {|f| f.write out}
    end
    #message.getFields.each do |field|
    #  puts field.default_value_set
    #  puts field.getJavaType
    #  puts field.toString
    #end
  end
end