psyclone.psyir.transformations.move_trans#

This module provides the MoveTrans transformation.

Classes#

  • MoveTrans: Provides a transformation to move a node in the tree. For

class psyclone.psyir.transformations.move_trans.MoveTrans[source]#

Provides a transformation to move a node in the tree. For example:

>>> from psyclone.parse.algorithm import parse
>>> from psyclone.psyGen import PSyFactory
>>> ast,invokeInfo=parse("lfric.F90")
>>> psy=PSyFactory("lfric").create(invokeInfo)
>>> schedule=psy.invokes.get('invoke_v3_kernel_type').schedule
>>> # Uncomment the following line to see a text view of the schedule
>>> # print(schedule.view())
>>>
>>> from psyclone.transformations import MoveTrans
>>> trans=MoveTrans()
>>> trans.apply(schedule.children[0], schedule.children[2],
...             options = {"position":"after")
>>> # Uncomment the following line to see a text view of the schedule
>>> # print(schedule.view())

Nodes may only be moved to a new location with the same parent and must not break any dependencies otherwise an exception is raised.

Inheritance

Inheritance diagram of MoveTrans
apply(node, location, position='before', options=None, **kwargs)[source]#

Move the node represented by node before location location (which is also a node) by default and after if the optional position argument is set to ‘after’.

Parameters:

  • node (Node) – the node to be moved.

  • location (Node) – node before or after which the given node should be moved.

  • position (str) – whether to place the moved node before or after the location. This must be ‘before’ or ‘after’.

  • options (Optional[Dict[str, Any]]) – a dictionary with options for transformations.

  • options["position"] (str) – either ‘before’ or ‘after’.

Raises:
validate(node, location, options=None, **kwargs)[source]#

validity checks for input arguments.

Parameters:

  • node (Node) – the node to be moved.

  • options (Optional[Dict[str, Any]]) – a dictionary with options for transformations.

  • options["position"] (str) – either ‘before’ or ‘after’.

  • location (Node) – node before or after which the given node should be moved.

  • position (str) – whether to place the moved node before or after the location. This must be ‘before’ or ‘after’.

Raises: