class Crystal::Macros::Union

Overview

A type union, like (Int32 | String).

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 resolve : ASTNodeSource

Resolves this union to a TypeNode. Gives a compile-time error if any type inside the union can't be resolved.

def resolve? : ASTNode | NilLiteralSource

Resolves this union to a TypeNode. Returns a NilLiteral if any type inside the union can't be resolved.

def types : ArrayLiteral(ASTNode)Source

Returns the types of this union.

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