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@shBang #!/usr/bin/env python3
@*
Operator.tmpl
Created by Graham Dennis on 2007-10-13.
Copyright (c) 2007-2012, Graham Dennis
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*@
@extends xpdeint.Operators._Operator
@from xpdeint.Vectors.VectorElement import VectorElement
@from xpdeint.CallOnceGuards import callOncePerInstanceGuard
@def insideEvaluateOperatorLoops
@#
@# Content must be provided by a subclass
@assert 0
@#
@end def
@@callOncePerInstanceGuard
@def initialise
@#
@super
@#
@if $operatorVector
_${parent.id}_calculate_${name}_field();
@end if
@#
@end def
@def calculateOperatorFieldFunctionContents($function)
@#
${codeBlocks['operatorDefinition'].loop(self.insideCalculateOperatorFieldLoops)}@slurp
@#
@end def
@def insideCalculateOperatorFieldLoopsBegin
@#
@for $operatorComponentName in $operatorComponents.keys()
@if $operatorVector and operatorComponentName in $operatorVector.components
@continue
@end if
${operatorVector.type} $operatorComponentName;
@end for
@#
@end def
@attr $evaluateOperatorFunctionArgument = 'real _step'
@def evaluateOperatorFunctionContents($function)
@#
@if not 'calculateOperatorField' in $functions
${evaluateOperatorFunctionContentsWithCodeBlock(function)}@slurp
@else
${evaluateOperatorFunctionContentsWithoutCodeBlock(function)}@slurp
@end if
@#
@end def
@def evaluateOperatorFunctionContentsWithCodeBlock($function)
@#
${callEvaluateLoop}@slurp
@#
@if $resultVector and $resultVector.needsTransforms
_${resultVector.id}_basis = $basisIndexForBasis($operatorBasis);
@end if
@#
@end def
@def callEvaluateLoop
${codeBlocks['operatorDefinition'].loop(self.insideEvaluateOperatorLoops)}@slurp
@end def
@def insideEvaluateOperatorLoopsBegin
@#
@if not $operatorVector
@# If we don't have an operator vector, then we need to create
@# the component variables so that the user can set them inside
@# the loop
@for $operatorComponentName, $operatorComponentDictionary in $operatorComponents.items()
@set $typeNamesSet = set([vector.type for vector in operatorComponentDictionary.keys()])
@set $typeName = 'real'
@if 'complex' in typeNamesSet
@set $typeName = 'complex'
@end if
${typeName} ${operatorComponentName};
@end for
@end if
@#
@end def
@def evaluateOperatorFunctionContentsWithoutCodeBlock($function)
@#
@# We need to loop over all of the vectors to which we are applying our operators.
@#
${transformVectorsToBasis($targetVectors, $operatorBasis)}@slurp
@#
@# We have an operator vector and we will need to loop over it
@set $setOfVectorsToLoopOver = $targetVectors.copy()
@silent $setOfVectorsToLoopOver.add($operatorVector)
@if $resultVector
@silent $setOfVectorsToLoopOver.add($resultVector)
@end if
@#
${evaluateOperatorLoop(setOfVectorsToLoopOver)}@slurp
@#
@if $resultVector and $resultVector.needsTransforms
_${resultVector.id}_basis = $basisIndexForBasis($operatorBasis);
@end if
@#
@end def
@def optimisedOperatorCopyBegin
@# This optimisation only works in a restricted set of circumstances. It's common enough, but not as general
@# as it could be. Basically, you need a single operator name (e.g. L, not Lx and Ly) which is applied to all
@# components of a vector.
@if len($targetVectors) != 1 or not $resultVector or len($operatorNames) != 1
@return
@end if
@set targetVector = $anyObject($targetVectors)
@if $targetVector.nComponents != $resultVector.nComponents or not targetVector.needsTransforms
@return
@end if
@# For this operator, we don't modify the target vector, so if we just transform it, we'll have to transform it back again
@# Here, we copy the target vector into the result vector because it's the same size. This way we can avoid the second transform
memcpy(_active_${resultVector.id}, _active_${targetVector.id}, ${targetVector.allocSize} * sizeof(${targetVector.type}));
${targetVector.type} *__backup_ptr = _active_${targetVector.id};
ptrdiff_t __backup_basis = _${targetVector.id}_basis;
_active_${targetVector.id} = _active_${resultVector.id};
@#
@end def
@def optimisedOperatorCopyEnd
@if len($targetVectors) != 1 or not $resultVector or len($operatorNames) != 1
@return
@end if
@set targetVector = $anyObject($targetVectors)
@if $targetVector.nComponents != $resultVector.nComponents or not targetVector.needsTransforms
@return
@end if
_active_${targetVector.id} = __backup_ptr;
_${targetVector.id}_basis = __backup_basis;
@#
@end def
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