Expression class Null safety

Represents a code block that wraps an Expression. Represents a Dart expression.

See various concrete implementations for details.

Implemented types
Implementers

Constructors

Expression()
const

Properties

awaited → Expression
This expression preceded by await.
read-only
code → Code
The expression as a valid Code block.
read-only
expression → Expression
May be overridden to support other types implementing Expression.
read-only
hashCode → int
The hash code for this object.
read-onlyinherited
isConst → bool
Whether this expression implies a const context for sub expressions.
read-only
nullChecked → Expression
Applies the null check operator on this expression, returning this !.
read-only
nullSafeSpread → Expression
This expression precenede by the null safe spread operator ?....
read-only
returned → Expression
This expression preceded by return.
read-only
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
spread → Expression
This expression preceded by the spread operator ....
read-only
statement → Code
The expression as a valid Code block with a trailing ;.
read-only
thrown → Expression
This expression preceded by throw.
read-only

Methods

accept<R>(covariant ExpressionVisitor<R> visitor, [R? context]) → R
override
and(Expression other) → Expression
Returns the result of this && other.
asA(Expression other) → Expression
Returns the result of this as other.
assign(Expression other) → Expression
Return {this} = {other}.
assignConst(String name, [Reference? type]) → Expression
Return const {name} = {this}.
assignFinal(String name, [Reference? type]) → Expression
Return final {name} = {this}.
assignNullAware(Expression other) → Expression
Return {this} ??= {other}.
assignVar(String name, [Reference? type]) → Expression
Return var {name} = {this}.
call(Iterable<Expression> positionalArguments, [Map<String, Expression> namedArguments = const {}, List<Reference> typeArguments = const []]) → Expression
Call this expression as a method.
cascade(String name) → Expression
Returns an expression accessing ..<name> on this expression.
conditional(Expression whenTrue, Expression whenFalse) → Expression
equalTo(Expression other) → Expression
Returns the result of this == other.
greaterOrEqualTo(Expression other) → Expression
Returns the result of this >= other.
greaterThan(Expression other) → Expression
Returns the result of this > other.
ifNullThen(Expression other) → Expression
Return {this} ?? {other}.
index(Expression index) → Expression
Returns accessing the index operator ([]) on this.
isA(Expression other) → Expression
Returns the result of this is other.
isNotA(Expression other) → Expression
Returns the result of this is! other.
lessOrEqualTo(Expression other) → Expression
Returns the result of this <= other.
lessThan(Expression other) → Expression
Returns the result of this < other.
negate() → Expression
Returns the result of !this.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
notEqualTo(Expression other) → Expression
Returns the result of this != other.
nullSafeProperty(String name) → Expression
Returns an expression accessing ?.<name> on this expression.
operatorAdd(Expression other) → Expression
Returns the result of this + other.
operatorDivide(Expression other) → Expression
Returns the result of this / other.
operatorEuclideanModulo(Expression other) → Expression
Returns the result of this % other.
operatorMultiply(Expression other) → Expression
Returns the result of this * other.
operatorSubstract(Expression other) → Expression
Returns the result of this - other.
or(Expression other) → Expression
Returns the result of this || other.
property(String name) → Expression
Returns an expression accessing .<name> on this expression.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited