ContBitSelect

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engine
Class ContBitSelect

java.lang.Object
  engine.Expression
      engine.WireSelection
          engine.BitSelect
              engine.ContBitSelect

All Implemented Interfaces:: Executable, LeftValue, RightValue

class ContBitSelect
extends BitSelect
implements Executable

This is a BitSelect that continuously assings to its target. Unless BitSelect, it maintains the bits in an internal BitVector ( data ), and calls Wire's compute(), in order for it to determine its bits considering all its assignemens;

Field Summary

(package private) boolean active


(package private) BitVector b


(package private) BitVector data


(package private) int end


(package private) BitVector newB
          The computed data to be assigned to the target BitVector

(package private) byte[] newStrengths
          The computed strengths to be assigned to target

(package private) int start


(package private) byte[] strengths


(package private) GenericSelectorDescription target


(package private) long updateTime
          The timestamp of the last programmed update

Fields inherited from class engine.Expression

length, ns

Constructor Summary

(package private) ContBitSelect(NameSpace ns, BitVector b, GenericSelectorDescription target, byte strength)


(package private) ContBitSelect(NameSpace ns, BitVector b, GenericSelectorDescription target, int start, int end)
          The implicit strength (strong1, strong0) is used here.

(package private) ContBitSelect(NameSpace ns, BitVector b, GenericSelectorDescription target, int start, int end, byte strength)


Method Summary

(package private) void addMonitor(Monitor m)


void assign(Result r)


(package private) void assign(Result r, byte[] strengths)


(package private) void breakSelection(WireSelection[] bits, int startIndex)
          Breaks this wire selection into one-bit long ContBitSelects.

Result evaluate()


void execute()


int getStrength(int bitIndex)
          Returns the strength that drives this wire.

void getStrengths(byte[] s, int index)
          Copies the strengths into the given vector, starting from the given index.

boolean isLeftValue()


int length()


(package private) void reatach()
          Re-attaches thie expression to its target wire

(package private) void release()
          Detach this assignement from its taregt wire, so subsequent calls to its compute methid will not

(package private) void set(BitVector x, int start, int end)
          Called by @see assign with the appropriate parameters

void setStrengths(byte[] s, int startIndex)
          First sets the strengths, and then calls the old assign.

byte strength(int i)


java.lang.String toString()
          Convert this Object to a human-readable String.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

data

BitVector data

strengths

byte[] strengths

updateTime

long updateTime

The timestamp of the last programmed update

active

boolean active

newB

BitVector newB

The computed data to be assigned to the target BitVector

newStrengths

byte[] newStrengths

The computed strengths to be assigned to target

start

int start

end

int end

b

BitVector b

target

GenericSelectorDescription target

Constructor Detail

ContBitSelect

ContBitSelect(NameSpace ns,
              BitVector b,
              GenericSelectorDescription target,
              int start,
              int end,
              byte strength)

ContBitSelect

ContBitSelect(NameSpace ns,
              BitVector b,
              GenericSelectorDescription target,
              int start,
              int end)

The implicit strength (strong1, strong0) is used here.

ContBitSelect

ContBitSelect(NameSpace ns,
              BitVector b,
              GenericSelectorDescription target,
              byte strength)

Method Detail

set

void set(BitVector x,
         int start,
         int end)
   throws InterpretTimeException

Called by @see assign with the appropriate parameters

Overrides:: set in class BitSelect

setStrengths

public void setStrengths(byte[] s,
                         int startIndex)

First sets the strengths, and then calls the old assign. This will cause the assigned wire to compute its value considering the new strengths

Overrides:: setStrengths in class BitSelect

execute

public void execute()
             throws InterpretTimeException,
                    SimulationStoppedException

Specified by:: execute in interface Executable

strength

public byte strength(int i)

release

void release()

Description copied from class: WireSelection

Detach this assignement from its taregt wire, so subsequent calls to its compute methid will not

Overrides:: release in class BitSelect

reatach

void reatach()

Description copied from class: WireSelection

Re-attaches thie expression to its target wire

Overrides:: reatach in class BitSelect

breakSelection

void breakSelection(WireSelection[] bits,
                    int startIndex)

Description copied from class: WireSelection

Breaks this wire selection into one-bit long ContBitSelects.

Overrides:: breakSelection in class BitSelect

evaluate

public Result evaluate()
                throws InterpretTimeException

length

public int length()

getStrength

public int getStrength(int bitIndex)
                throws java.lang.ClassCastException

Returns the strength that drives this wire.

Specified by:: getStrength in class WireSelection

getStrengths

public void getStrengths(byte[] s,
                         int index)

Description copied from class: WireSelection

Copies the strengths into the given vector, starting from the given index. Tha last one should be large enough to keep 'em. Mainly used by MContAssignmonitor for port connections.

Specified by:: getStrengths in class WireSelection

assign

public void assign(Result r)
            throws InterpretTimeException

assign

void assign(Result r,
            byte[] strengths)
      throws InterpretTimeException

toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

Overrides:: toString in class Expression

addMonitor

void addMonitor(Monitor m)

Specified by:: addMonitor in class Expression

isLeftValue

public boolean isLeftValue()

Overview

Package

Class

Use

Deprecated

Index

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Field Summary
`(package private) boolean`	`active`
`(package private) BitVector`	`b`
`(package private) BitVector`	`data`
`(package private) int`	`end`
`(package private) BitVector`	`newB` The computed data to be assigned to the target BitVector
`(package private) byte[]`	`newStrengths` The computed strengths to be assigned to target
`(package private) int`	`start`
`(package private) byte[]`	`strengths`
`(package private) GenericSelectorDescription`	`target`
`(package private) long`	`updateTime` The timestamp of the last programmed update

Constructor Summary
`(package private)`	`ContBitSelect(NameSpace ns, BitVector b, GenericSelectorDescription target, byte strength)`
`(package private)`	`ContBitSelect(NameSpace ns, BitVector b, GenericSelectorDescription target, int start, int end)` The implicit strength (strong1, strong0) is used here.
`(package private)`	`ContBitSelect(NameSpace ns, BitVector b, GenericSelectorDescription target, int start, int end, byte strength)`

Method Summary
`(package private) void`	`addMonitor(Monitor m)`
`void`	`assign(Result r)`
`(package private) void`	`assign(Result r, byte[] strengths)`
`(package private) void`	`breakSelection(WireSelection[] bits, int startIndex)` Breaks this wire selection into one-bit long ContBitSelects.
`Result`	`evaluate()`
`void`	`execute()`
`int`	`getStrength(int bitIndex)` Returns the strength that drives this wire.
`void`	`getStrengths(byte[] s, int index)` Copies the strengths into the given vector, starting from the given index.
`boolean`	`isLeftValue()`
`int`	`length()`
`(package private) void`	`reatach()` Re-attaches thie expression to its target wire
`(package private) void`	`release()` Detach this assignement from its taregt wire, so subsequent calls to its compute methid will not
`(package private) void`	`set(BitVector x, int start, int end)` Called by @see assign with the appropriate parameters
`void`	`setStrengths(byte[] s, int startIndex)` First sets the strengths, and then calls the old assign.
`byte`	`strength(int i)`
`java.lang.String`	`toString()` Convert this Object to a human-readable String.

engine Class ContBitSelect

data

strengths

updateTime

active

newB

newStrengths

start

end

b

target

ContBitSelect

ContBitSelect

ContBitSelect

set

setStrengths

execute

strength

release

reatach

breakSelection

evaluate

length

getStrength

getStrengths

assign

assign

toString

addMonitor

isLeftValue

engine
Class ContBitSelect