class Crystal::Macros::MetaVar

Overview

A fictitious node representing a variable or instance variable, together with type information.

Defined in:

compiler/crystal/macros.cr

Instance Method Summary

Instance methods inherited from class Crystal::Macros::ASTNode

!=(other : ASTNode) : BoolLiteral !=, ==(other : ASTNode) : BoolLiteral ==, class_name : StringLiteral class_name, column_number : StringLiteral | NilLiteral column_number, end_column_number : StringLiteral | NilLiteral end_column_number, end_line_number : StringLiteral | NilLiteral end_line_number, filename : StringLiteral | NilLiteral filename, id : MacroId id, is_a?(type : TypeNode) : BoolLiteral is_a?, line_number : StringLiteral | NilLiteral line_number, nil? : BoolLiteral nil?, raise(message) : NoReturn raise, stringify : StringLiteral stringify, symbolize : SymbolLiteral symbolize

Instance Method Detail

def annotation(type : TypeNode) : Annotation | NilLiteralSource

Returns the last Annotation with the given #type attached to this variable or NilLiteral if there are none.

def annotations(type : TypeNode) : ArrayLiteral(Annotation)Source

Returns an array of annotations with the given #type attached to this variable, or an empty ArrayLiteral if there are none.

def default_value : ASTNodeSource

Returns the default value of this variable. Note that if the variable doesn't have a default value, or the default value is nil, a NilLiteral will be returned. To distinguish between these cases, use #has_default_value?.

def has_default_value? : BoolLiteralSource

Returns whether this variable has a default value (which can in turn be nil).

def name : MacroIdSource

Returns the name of this variable.

def type : TypeNode | NilLiteralSource

Returns the type of this variable, if known, or nil.

© 2012–2021 Manas Technology Solutions.
Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/1.2.1/Crystal/Macros/MetaVar.html