def _get_block_class(self, number_of_arguments = None):
if not number_of_arguments:
# Get the generic block class
return self._blockClass
# Compute the name of the block class with the given number of
# arguments
name = self.symbol_for("Block" + str(number_of_arguments))
# Lookup the specific block class in the dictionary of globals and
# return it
if self.has_global(name):
return self.get_global(name)
# Get the block class for blocks with the given number of arguments
result = self._load_class(name, None)
# Add the appropriate value primitive to the block class
result.add_instance_primitive(Block.get_evaluation_primitive(number_of_arguments, self))
# Insert the block class into the dictionary of globals
self.set_global(name, result)
# Return the loaded block class
return result
def _get_block_class(self, number_of_arguments=None):
if not number_of_arguments:
# Get the generic block class
return self._blockClass
# Compute the name of the block class with the given number of
# arguments
name = self.symbol_for("Block" + str(number_of_arguments))
# Lookup the specific block class in the dictionary of globals and
# return it
if self.has_global(name):
return self.get_global(name)
# Get the block class for blocks with the given number of arguments
result = self._load_class(name, None)
# Add the appropriate value primitive to the block class
result.add_instance_primitive(
Block.get_evaluation_primitive(number_of_arguments, self))
# Insert the block class into the dictionary of globals
self.set_global(name, result)
# Return the loaded block class
return result
