Class: Snap7::DataBlockRegistry

Inherits:
Object
  • Object
show all
Defined in:
lib/ffi-snap7/data_structures/data_block_registry.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DataBlockRegistry

Returns a new instance of DataBlockRegistry.



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# File 'lib/ffi-snap7/data_structures/data_block_registry.rb', line 6

def initialize
  @dbs = {}
end

Instance Attribute Details

#dbs ⇒ Object (readonly)

Returns the value of attribute dbs.



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# File 'lib/ffi-snap7/data_structures/data_block_registry.rb', line 4

def dbs
  @dbs
end

Instance Method Details

#add_variable(ident, address, data_type) ⇒ Object 



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# File 'lib/ffi-snap7/data_structures/data_block_registry.rb', line 11

def add_variable(ident, address, data_type)
  db_addr, _, var_addr = address.partition('.')
  var = Snap7::Variable.new ident, var_addr, data_type
  db(db_addr).add_variable var
end

#db(db_addr) ⇒ Object 



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# File 'lib/ffi-snap7/data_structures/data_block_registry.rb', line 28

def db(db_addr)
  @dbs[db_addr] ||= Snap7::DataBlock.new(db_addr)
end

#each(&block) ⇒ Object 



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# File 'lib/ffi-snap7/data_structures/data_block_registry.rb', line 33

def each(&block)
  sorted_dbs.each &block
end

#find_variable(ident) ⇒ Object 



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# File 'lib/ffi-snap7/data_structures/data_block_registry.rb', line 18

def find_variable(ident)
  each do |db|
    found_variable = db.variables.find { |var| var.ident == ident }
    return found_variable if found_variable
  end

  return nil
end

#sorted_dbs ⇒ Object 



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# File 'lib/ffi-snap7/data_structures/data_block_registry.rb', line 38

def sorted_dbs
  @dbs.values.sort { |a,b| a.number <=> b.number }
end