Precedence class

Opaque representation of Dart expression precedence.

Expression classes return an instance of this class to represent a particular row in the Dart expression precedence table. This allows clients to determine when parentheses are needed (by comparing precedence values), but ensures that the client does not become dependent on the particular integers used by the analyzer to represent table rows, since we may need to change these integers from time to time to accommodate new language features.

Constructors

Precedence.forTokenType(TokenType type)

Constructs the precedence for a unary or binary expression constructed from an operator of the given type.

Properties

hashCode → int

The hash code for this object.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator <(Precedence other) → bool

Returns true if this precedence represents a looser binding than other; that is, parsing ambiguities will be resolved in favor of nesting the expression having precedence other within the expression having precedence this.

operator <=(Precedence other) → bool

Returns true if this precedence represents a looser, or equal, binding than other; that is, parsing ambiguities will be resolved in favor of nesting the expression having precedence other within the expression having precedence this, or, if the precedences are equal, parsing ambiguities will be resolved according to the associativity of the expression precedence.

operator ==(Object other) → bool

The equality operator.

override

operator >(Precedence other) → bool

Returns true if this precedence represents a tighter binding than other; that is, parsing ambiguities will be resolved in favor of nesting the expression having precedence this within the expression having precedence other.

operator >=(Precedence other) → bool

Returns true if this precedence represents a tighter, or equal, binding than other; that is, parsing ambiguities will be resolved in favor of nesting the expression having precedence this within the expression having precedence other, or, if the precedences are equal, parsing ambiguities will be resolved according to the associativity of the expression precedence.

Constants

additive → const Precedence

assignment → const Precedence

bitwiseAnd → const Precedence

bitwiseOr → const Precedence

bitwiseXor → const Precedence

cascade → const Precedence

conditional → const Precedence

equality → const Precedence

ifNull → const Precedence

logicalAnd → const Precedence

logicalOr → const Precedence

multiplicative → const Precedence

none → const Precedence

postfix → const Precedence

prefix → const Precedence

primary → const Precedence

relational → const Precedence

shift → const Precedence