def get( noVariables ):
variables = []
for ix in range( 0, noVariables ):
if len( variableDeque ) > 0:
variables.append( variableDeque.popleft() )
else:
variables.append( Block.createMatlabVariable( "ix" ) )
return variables
def performOperation( varMap, template, threshold = 4 ):
if template[-1] != "\n":
template += "\n"
# THE STRING VALUE RETURNED (FOR THE mfile2SFC COMPILER)
retval = ''
namedArrayListMap = {} # MAPS TEMPLATE TOKENS TO LIST OF NAMED ARRAYS
namedArrayOffsets = {} # THE OFFSET INTO EACH NAMED ARRAY LIST
prototypeArrayList = None
missingType = []
# GET NamedArrayList FOR EVERY STRUCTURE MEMBER OF THE VARIABLES IN varMap
for ( key, value ) in varMap.items():
namedArrayList = getNamedArrayList( value )
namedArrayListMap[ key ] = namedArrayList
if namedArrayList:
if not prototypeArrayList:
prototypeArrayList = namedArrayList
else:
missingType.append( key )
namedArrayOffsets[ key ] = 0
# IF ONE OR MORE VARIABLES IN varMap HAVE NO TYPE (I.E. AN EMPTY namedArrayList)
# THEY ARE GIVEN THE FLATTENED TYPE OF THE FIRST VARIABLE THAT HAS A TYPE
if missingType:
if not prototypeArrayList:
return ""
totalElements = 0
basicType = None
for namedArray in prototypeArrayList:
totalElements += namedArray.getNoElements()
if not basicType:
basicType = namedArray.getArray().getElementType()
newType = Array( totalElements, basicType )
for key in missingType:
value = varMap[ key ]
if type( value ) in ( list, tuple ):
for item in value:
item.type = newType
else:
value.type = newType
namedArrayListMap[ key ] = getNamedArrayList( value )
# THE FOLLOWING CODE MAPS A SINGLE INPUT TO MULTIPLE OUTPUTS
maxItems = 0
totalItemsMap = {}
singletonNamedArrayKeys = []
for ( key, namedArrayList ) in namedArrayListMap.items():
itemCount = 0
for namedArray in namedArrayList:
itemCount += namedArray.getNoElements()
if itemCount > maxItems:
maxItems = itemCount
if itemCount == 1:
singletonNamedArrayKeys.append( key )
if maxItems > 1:
for key in singletonNamedArrayKeys:
namedArrayListMap[ key ] = [ namedArrayListMap[ key ][0] ]*maxItems
arrayCoordinator = ArrayCoordinator()
initializations = ''
for ( key, value ) in namedArrayListMap.items():
initializations += arrayCoordinator.addNamedArray( key, value[ 0 ] )
loopVar = Block.createMatlabVariable( "ix" );
notDone = True
while notDone:
items = arrayCoordinator.getSpan()
if items < threshold:
for ix in range( 0, items ):
nameMap = dict()
for key in namedArrayListMap.keys():
nameMap[ key ] = arrayCoordinator.genElem( key )
arrayCoordinator.update( 1 )
templateInstance = Template( template, [nameMap] )
retval += templateInstance.respond()
else:
retval += initializations
nameMap = dict()
for key in namedArrayListMap.keys():
nameMap[ key ] = arrayCoordinator.genDeref( key )
arrayCoordinator.update( items )
retval += loopVar + " = 0\n"
retval += "while " + loopVar + " < " + str( items ) + "\n"
templateInstance = Template( template, [nameMap] )
retval += " " + templateInstance.respond()
retval += arrayCoordinator.genIncrements( ' ' )
retval += " " + loopVar + " = " + loopVar + " + 1\n"
retval += "end\n"
initializations = ''
termArrays = arrayCoordinator.getTermArrays()
for key in termArrays:
namedArrayList = namedArrayListMap[ key ]
namedArrayOffsets[ key ] += 1
offset = namedArrayOffsets[ key ]
if offset >= len( namedArrayList ):
notDone = False
break
initializations += arrayCoordinator.addNamedArray( key, namedArrayList[ offset ] )
return retval
