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# Author A. R. Porter, STFC Daresbury Lab
# Modified: R. W. Ford, S. Siso and N. Nobre, STFC Daresbury Lab
'''
Module providing a transformation from a generic PSyIR routine into a
NEMO InvokeSchedule.
'''
from psyclone.transformations import Transformation, TransformationError
from psyclone.psyir.nodes import Routine
from psyclone.nemo import NemoInvokeSchedule
[docs]class CreateNemoInvokeScheduleTrans(Transformation):
"""
Transform a generic PSyIR Routine into a NEMO InvokeSchedule.
For example:
>>> from psyclone.psyir.frontend.fortran import FortranReader
>>> from psyclone.psyir.nodes import Loop
>>> from psyclone.domain.nemo.transformations import \
CreateNemoInvokeScheduleTrans
>>> code = '''
... subroutine sub()
... integer :: ji
... real :: tmp(10)
... do ji=1, 10
... tmp(ji) = 2.0*ji
... end do
... end subroutine sub'''
>>> psyir = FortranReader().psyir_from_source(code)
>>> loop = psyir.walk(Loop)[0]
>>> trans = CreateNemoInvokeScheduleTrans()
>>> trans.apply(psyir.children[0])
>>> print(psyir.view(colour=False))
FileContainer[]
NemoInvokeSchedule[invoke='sub']
0: Loop[variable='ji']
Literal[value:'1', Scalar<INTEGER, UNDEFINED>]
Literal[value:'10', Scalar<INTEGER, UNDEFINED>]
Literal[value:'1', Scalar<INTEGER, UNDEFINED>]
Schedule[]
0: Assignment[]
ArrayReference[name:'tmp']
Reference[name:'ji']
BinaryOperation[operator:'MUL']
Literal[value:'2.0', Scalar<REAL, UNDEFINED>]
Reference[name:'ji']
<BLANKLINE>
The root node of this example has been transformed from a Routine into a
NemoInvokeSchedule.
"""
@property
def name(self):
'''
:returns: the name of the transformation.
:rtype: str
TODO #1214 remove this method.
'''
return type(self).__name__
def validate(self, node, options=None):
'''
Check that the supplied node is a valid target for this transformation.
:param node: the target of the transformation.
:type node: :py:class:`psyclone.psyir.nodes.Node`
:param options: a dictionary with options for \
transformations. No options are used in this \
transformation. This is an optional argument that defaults \
to None.
:type options: Optional[Dict[str, Any]]
:raises TransformationError: if the supplied node is not a Routine.
'''
super(CreateNemoInvokeScheduleTrans, self).validate(node,
options=options)
if not isinstance(node, Routine):
raise TransformationError(
f"Error in NemoInvokeTrans transformation. The supplied node "
f"should be a PSyIR Routine but found '{type(node).__name__}'")
def apply(self, node, options=None):
'''
Takes a generic PSyIR Routine and replaces it with a
NemoInvokeSchedule (in-place). Note that this may mean replacing
the top-level node itself and therefore this routine returns the
root of the modified tree.
:param node: the routine node to be transformed.
:type node: :py:class:`psyclone.psyir.nodes.Routine`
:param options: a dictionary with options for \
transformations. No options are used in this \
transformation. This is an optional argument that defaults \
to None.
:type options: Optional[Dict[str, Any]]
'''
self.validate(node, options=options)
# If it's a function we need to provide the return_symbol_name to the
# create method
return_symbol_name = None
if node.return_symbol:
return_symbol_name = node.return_symbol.name
new_node = NemoInvokeSchedule.create(
node.name, node.symbol_table.detach(), node.pop_all_children(),
is_program=node.is_program,
return_symbol_name=return_symbol_name)
# We need to replace the top node in the (possibly sub-) PSyIR
# tree that we've been passed.
if node.parent:
node.replace_with(new_node)
# For AutoAPI documentation generation
__all__ = ['CreateNemoInvokeScheduleTrans']