Value class Null safety Value

A SassScript value.

All SassScript values are unmodifiable. New values can be constructed using subclass constructors like new SassString. Untyped values can be cast to particular types using assert*() functions like assertString, which throw user-friendly error messages if they fail.

Implementers
Annotations

Properties

asList List<Value>
This value as a list. [...]
read-only
hasBrackets bool
Whether this value as a list has brackets. [...]
read-only
hashCode int
The hash code for this object. [...]
read-only, inherited
isTruthy bool
Whether the value counts as true in an @if statement and other contexts.
read-only
realNull Value?
Returns Dart's null value if this is sassNull, and returns this otherwise.
read-only
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
separator ListSeparator
The separator for this value as a list. [...]
read-only

Methods

assertBoolean([String? name]) SassBoolean
Throws a SassScriptException if this isn't a boolean. [...]
assertCalculation([String? name]) SassCalculation
Throws a SassScriptException if this isn't a calculation. [...]
assertColor([String? name]) SassColor
Throws a SassScriptException if this isn't a color. [...]
assertFunction([String? name]) SassFunction
Throws a SassScriptException if this isn't a function reference. [...]
assertMap([String? name]) SassMap
Throws a SassScriptException if this isn't a map. [...]
assertNumber([String? name]) SassNumber
Throws a SassScriptException if this isn't a number. [...]
assertString([String? name]) SassString
Throws a SassScriptException if this isn't a string. [...]
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
sassIndexToListIndex(Value sassIndex, [String? name]) int
Converts sassIndex into a Dart-style index into the list returned by asList. [...]
toCssString({bool quote = true}) String
Returns a valid CSS representation of this. [...]
toString() String
Returns a string representation of this. [...]
override
tryMap() SassMap?
Returns this as a SassMap if it is one (including empty lists, which count as empty maps) or returns null if it's not.
withListContents(Iterable<Value> contents, {ListSeparator? separator, bool? brackets}) SassList
Returns a new list containing contents that defaults to this value's separator and brackets.

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited