hwt/code.py
def StaticForEach(parentUnit, items, bodyFn, name=""):
    """
    Generate for loop for static items

    :param parentUnit: unit where this code should be instantiated
    :param items: items which this "for" itering on
    :param bodyFn: function which fn(item, index) or fn(item)
        returns (statementList, ack).
        It's content is performed in every iteration.
        When ack is high loop will fall to next iteration
    """

    items = list(items)
    itemsCnt = len(items)
    if itemsCnt == 0:
        # if there are no items there is nothing to generate
        return []
    elif itemsCnt == 1:
        # if there is only one item do not generate counter logic generate
        return bodyFn(items[0], 0)
    else:
        # if there is multiple items we have to generate counter logic
        index = parentUnit._reg(name + "for_index",
                                Bits(log2ceil(itemsCnt + 1), signed=False),
                                defVal=0)
        ackSig = parentUnit._sig(name + "for_ack")

        statementLists = []
        for i, (statementList, ack) in [(i, bodyFn(item, i))
                                        for i, item in enumerate(items)]:
            statementLists.append(statementList + [(ackSig(ack)), ])

        If(ackSig,
           If(index._eq(itemsCnt - 1),
              index(0)
              ).Else(
               index(index + 1)
           )
           )

        return Switch(index)\
            .addCases(
            enumerate(statementLists)
        ).Default(
            bodyFn(items[0], 0)[0],
            ackSig(True)
        )
def StaticForEach(parentUnit, items, bodyFn, name=""):
    items = list(items)
    itemsCnt = len(items)
    if itemsCnt == 0:
        # if there are no items there is nothing to generate
        return []
    elif itemsCnt == 1:
        # if there is only one item do not generate counter logic generate
        return bodyFn(items[0], 0)
    else:
        # if there is multiple items we have to generate counter logic
        index = parentUnit._reg(name + "for_index",
                                Bits(log2ceil(itemsCnt + 1), signed=False),
                                defVal=0)
        ackSig = parentUnit._sig(name + "for_ack")

        statementLists = []
        for i, (statementList, ack) in [(i, bodyFn(item, i))
                                        for i, item in enumerate(items)]:
            statementLists.append(statementList + [(ackSig(ack)), ])

        If(ackSig,
           If(index._eq(itemsCnt - 1),
              index(0)
              ).Else(
               index(index + 1)
           )
           )

        return Switch(index)\
            .addCases(
            enumerate(statementLists)
        ).Default(
            bodyFn(items[0], 0)[0],
            ackSig(True)
        )
def StaticForEach ( parentUnit , items , bodyFn , name = "" ) : items = list ( items ) itemsCnt = len ( items ) if itemsCnt == 0 : # if there are no items there is nothing to generate return [ ] elif itemsCnt == 1 : # if there is only one item do not generate counter logic generate return bodyFn ( items [ 0 ] , 0 ) else : # if there is multiple items we have to generate counter logic index = parentUnit . _reg ( name + "for_index" , Bits ( log2ceil ( itemsCnt + 1 ) , signed = False ) , defVal = 0 ) ackSig = parentUnit . _sig ( name + "for_ack" ) statementLists = [ ] for i , ( statementList , ack ) in [ ( i , bodyFn ( item , i ) ) for i , item in enumerate ( items ) ] : statementLists . append ( statementList + [ ( ackSig ( ack ) ) , ] ) If ( ackSig , If ( index . _eq ( itemsCnt - 1 ) , index ( 0 ) ) . Else ( index ( index + 1 ) ) ) return Switch ( index ) . addCases ( enumerate ( statementLists ) ) . Default ( bodyFn ( items [ 0 ] , 0 ) [ 0 ] , ackSig ( True ) )
Generate for loop for static items

    :param parentUnit: unit where this code should be instantiated
    :param items: items which this "for" itering on
    :param bodyFn: function which fn(item, index) or fn(item)
        returns (statementList, ack).
        It's content is performed in every iteration.
        When ack is high loop will fall to next iteration
Generate for loop for static items