Logic class Null safety

Represents a logical signal of any width which can change values.

Implementers

Constructors

Logic({String? name, int width = 1})
Constructs a new Logic named name with width bits.

Properties

bit LogicValue
The current active value of this signal if it has width 1, as a LogicValue.
@Deprecated('Use `value` instead.' ' Check `width` separately to confirm single-bit.'), read-only
changed Stream<LogicValueChanged>
A Stream of LogicValueChanged events which triggers at most once per Simulator tick, iff the value of the Logic has changed.
read-only
dstConnections Iterable<Logic>
An Iterable of all Logics that are being directly driven by this.
read-only
glitch → SynchronousEmitter<LogicValueChanged>
A stream of LogicValueChanged events for every time the signal transitions at any time during a Simulator tick.
read-only
hashCode int
The hash code for this object.
read-only, inherited
isInput bool
Returns true iff this signal is an input of its parent Module.
read-only
isOutput bool
Returns true iff this signal is an output of its parent Module.
read-only
isPort bool
Returns true iff this signal is an input or output of its parent Module.
read-only
name String
The name of this signal.
final
negedge Stream<LogicValueChanged>
A Stream of LogicValueChanged events which triggers at most once per Simulator tick, iff the value of the Logic has changed from 1 to 0.
read-only
nextChanged Future<LogicValueChanged>
Triggers at most once, the next time that this Logic changes value at the end of a Simulator tick.
read-only
nextNegedge Future<LogicValueChanged>
Triggers at most once, the next time that this Logic changes value at the end of a Simulator tick from 1 to 0.
read-only
nextPosedge Future<LogicValueChanged>
Triggers at most once, the next time that this Logic changes value at the end of a Simulator tick from 0 to 1.
read-only
parentModule Module?
The Module that this Logic exists within.
@protected, read / write
posedge Stream<LogicValueChanged>
A Stream of LogicValueChanged events which triggers at most once per Simulator tick, iff the value of the Logic has changed from 0 to 1.
read-only
reversed Logic
Returns a version of this Logic with the bit order reversed.
read-only
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
srcConnection Logic?
The Logic signal that is driving this, if any.
read-only
value LogicValue
The current active value of this signal.
read-only
valueBigInt BigInt
The current valid active value of this signal as a BigInt.
@Deprecated('Use value.toBigInt() instead.'), read-only
valueInt int
The current valid active value of this signal as an int.
@Deprecated('Use value.toInt() instead.'), read-only
width int
The number of bits in this signal.
read-only

Methods

and() Logic
Unary AND.
eq(dynamic other) Logic
Logical equality.
getRange(int startIndex, int endIndex) Logic
Returns a subset Logic. It is inclusive of startIndex, exclusive of endIndex.
gets(Logic other) → void
Connects this Logic directly to other.
hasValidValue() bool
Returns true iff the value of this signal is valid (no x or z).
inject(dynamic val, {bool fill = false}) → void
Injects a value onto this signal in the current Simulator tick.
isFloating() bool
Returns true iff all bits of the current value are floating (z).
lt(dynamic other) Logic
Less-than.
lte(dynamic other) Logic
Less-than-or-equal-to.
makeUnassignable() → void
Makes it so that this signal cannot be assigned by any full (<=) or conditional (<) assignment.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
or() Logic
Unary OR.
put(dynamic val, {bool fill = false}) → void
Puts a value val onto this signal, which may or may not be picked up for changed in this Simulator tick.
signExtend(int newWidth) Logic
Returns a new Logic with width newWidth where new bits added are sign bits as the most significant bits. The sign is determined using two's complement, so it takes the most significant bit of the original signal and extends with that.
slice(int endIndex, int startIndex) Logic
Accesses a subset of this signal from startIndex to endIndex, both inclusive.
toString() String
A string representation of this object.
override
withSet(int startIndex, Logic update) Logic
Returns a copy of this Logic with the bits starting from startIndex up until startIndex + update.width set to update instead of their original value.
xor() Logic
Unary XOR.
zeroExtend(int newWidth) Logic
Returns a new Logic with width newWidth where new bits added are zeros as the most significant bits.

Operators

operator %(dynamic other) Logic
Modulo operation.
operator &(Logic other) Logic
Logical bitwise AND.
operator *(dynamic other) Logic
Multiplication.
operator +(dynamic other) Logic
Addition.
operator -(dynamic other) Logic
Subtraction.
operator /(dynamic other) Logic
Division.
operator <(dynamic other) ConditionalAssign
Conditional assignment operator.
operator <<(dynamic other) Logic
Logical left-shift.
operator <=(Logic other) → void
Connects this Logic directly to another Logic.
operator ==(Object other) bool
The equality operator.
inherited
operator >(dynamic other) Logic
Greater-than.
operator >=(dynamic other) Logic
Greater-than-or-equal-to.
operator >>(dynamic other) Logic
Arithmetic right-shift.
operator >>>(dynamic other) Logic
Logical right-shift.
operator [](dynamic index) Logic
Accesses the indexth bit of this signal.
operator ^(Logic other) Logic
Logical bitwise XOR.
operator |(Logic other) Logic
Logical bitwise OR.
operator ~() Logic
Logical bitwise NOT.