EmptySemanticContext class

Inheritance

• Object
• SemanticContext
• EmptySemanticContext

Constructors

EmptySemanticContext()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

eval(Recognizer<ATNSimulator> parser, RuleContext? parserCallStack) → bool

For context independent predicates, we evaluate them without a local context (i.e., null context). That way, we can evaluate them without having to create proper rule-specific context during prediction (as opposed to the parser, which creates them naturally). In a practical sense, this avoids a cast exception from RuleContext to myruleContext.

override

evalPrecedence(Recognizer<ATNSimulator> parser, RuleContext? parserCallStack) → SemanticContext?

Evaluate the precedence predicates for the context and reduce the result.

inherited

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 ==(Object other) → bool

The equality operator.

inherited

Constants

Instance → const SemanticContext

The default SemanticContext, which is semantically equivalent to a predicate of the form {@code {true}?}.