Value class abstract Value

A SassScript value.

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

Implementers

• SassBoolean
• SassCalculation
• SassColor
• SassFunction
• SassList
• SassMap
• SassMixin
• SassNumber
• SassString

Available extensions

• SassApiValue

Annotations

• @sealed

Properties

asList → List<Value>

This value as a list.

no setter

hasBrackets → bool

Whether this value as a list has brackets.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

isTruthy → bool

Whether the value counts as true in an @if statement and other contexts.

no setter

realNull → Value?

Returns Dart's null value if this is sassNull, and returns this otherwise.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

separator → ListSeparator

The separator for this value as a list.

no setter

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.

assertMixin([String? name]) → SassMixin

Throws a SassScriptException if this isn't a mixin reference.

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 nonexistent 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