Adding back the Andreas's iterator. Not sure if anyone is using it.

PyLTSpice/utils/sweep_iterators.py

@@ -17,4 +17,96 @@
 #
 # -------------------------------------------------------------------------------
 
-from spicelib.utils.sweep_iterators import *
+from spicelib.utils.sweep_iterators import *
+
+# ======================== Andreas Kaeberlein Iterator =========================
+
+class sweep_iterators:
+
+    # *****************************
+    def __init__(self):
+        """
+        Initialization
+        """
+        self.numTotalIterations = 0  # total of iteartion if all loops are executed
+        self.numCurrentIteration = 0  # current iteration
+        self.iteratorEntrys = []  # list of dicts for iterator entrys
+        self.idxForNextIter = []  # currently used entry value for loop
+
+    # *****************************
+
+    # *****************************
+    def add(self, name="", vals=[]):
+        """
+        @note               adds entry to list of iterators
+
+        @param name         component name in ltspice schematic
+        @param vals         component values
+        @rtype              boolean
+        @return             successful
+        """
+        # check for valid arguments
+        if (0 == len(name) or 0 == len(vals)):
+            raise ValueError("Empty arguments provided")
+        # add to iterator list
+        self.iteratorEntrys.append({'name': name, 'values': vals})  # add entry
+        self.idxForNextIter.append(0)  # start on first element
+        # update total number of iteration
+        self.numTotalIterations = 1;  # prepare for mutiplication
+        for i in self.iteratorEntrys:
+            self.numTotalIterations = self.numTotalIterations * len(i['values'])
+        # reset current iterator to ensure restart
+        self.numCurrentIteration = 0
+        # succesfull end
+        return True
+
+    # *****************************
+
+    # *****************************
+    def done(self):
+        """
+        @note               check if iteration is done
+        @rtype              boolean
+        @retval     True    Iteration done
+        @retval     False   Iteration needs to continue
+        @return             successful
+        """
+        # check for proper init
+        if (0 == len(self.iteratorEntrys)):
+            return True
+        # iteration done?
+        if (self.numCurrentIteration < self.numTotalIterations):
+            return False
+        return True
+
+    # *****************************
+
+    # *****************************
+    def next(self):
+        """
+        @note               creates next parameter set for sweep
+
+        @rtype              dict
+        @return             parameter set
+        """
+        # check for iterators
+        if (0 == len(self.iteratorEntrys)):
+            raise ValueError("No iterator entrys defined. Use 'add' procedure")
+        # assemble dict with new iterator values
+        nextIter = {}
+        for i in range(len(self.iteratorEntrys)):
+            nextIter[self.iteratorEntrys[i]['name']] = self.iteratorEntrys[i]['values'][self.idxForNextIter[i]]
+        # prepare for next cycle
+        for i in range(len(self.idxForNextIter) - 1, -1, -1):
+            # increment inner loop
+            if (i == len(self.idxForNextIter) - 1):
+                self.idxForNextIter[i] = self.idxForNextIter[i] + 1
+            # inner loop overflow, inc outer loop
+            if (self.idxForNextIter[i] >= len(self.iteratorEntrys[i]['values'])):
+                self.idxForNextIter[i] = 0  # restart inner loop at first element
+                self.idxForNextIter[max(i - 1, 0)] = self.idxForNextIter[i - 1] + 1  # go to next element in outer loop
+        # increment iterator
+        self.numCurrentIteration = self.numCurrentIteration + 1
+        # next iteration element
+        return nextIter
+    # *****************************