class Crystal::Macros::TypeNode

Overview

Represents a type in the program, like Int32 or 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, id : MacroId id, raise(message) : NoReturn raise, stringify : StringLiteral stringify

Instance methods inherited from class Reference

==(other)
==(other : self) ==, hash hash, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, same?(other : Reference)
same?(other : Nil) same?, to_s(io : IO) : Nil to_s

Instance methods inherited from class Object

!=(other) !=, !~(other) !~, ==(other) ==, ===(other)
===(other : YAML::Any)
===(other : JSON::Any) ===, =~(other) =~, class class, clone clone, crystal_type_id crystal_type_id, dup dup, hash hash, inspect
inspect(io : IO) inspect, itself itself, not_nil! not_nil!, tap(&block) tap, to_json to_json, to_pretty_json(io : IO)
to_pretty_json to_pretty_json, to_s
to_s(io : IO) to_s, to_yaml(io : IO)
to_yaml to_yaml, try(&block) try

Class methods inherited from class Object

==(other : Class) ==, ===(other) ===, cast(other) : self cast, from_json(string_or_io) : self from_json, from_yaml(string : String) : self from_yaml, hash hash, inspect(io) inspect, name : String name, to_s(io) to_s, |(other : U.class) |

Instance Method Detail

def abstract? : BoolLiteral #

Returns true if this type is abstract.


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def class : TypeNode #

Returns the class of this type. With this you can, for example, obtain class methods by invoking type.class.methods.


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def has_attribute?(name : StringLiteral | SymbolLiteral) : BoolLiteral #

Returns true if this type has an attribute. For example @[Flags] or @[Packed] (the name you pass to this method is "Flags" or "Packed" in these cases).


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def has_constant?(name : StringLiteral | SymbolLiteral) : BoolLiteral #

Returns true if this type has a constant. For example DEFAULT_OPTIONS (the name you pass to this method is "DEFAULT_OPTIONS" or :DEFAULT_OPTIONS in this cases).


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def instance_vars : Crystal::Macros::ArrayLiteral(MetaVar) #

Returns the instance variables of this type.


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def methods : Array(Def) #

Returns the instance methods defined by this type, without including inherited methods.


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def name : MacroId #

Returns the fully qualified name of this type.


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def size : NumberLiteral #

Returns the number of elements in this tuple type or tuple metaclass type. Gives a compile error if this is not one of those types.


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def subclasses : Crystal::Macros::ArrayLiteral(MacroId) #

Returns the constants and types defined by this type.


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def superclass : TypeNode | NilLiteral #

Returns the direct superclass of this type.


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def type_vars : Crystal::Macros::ArrayLiteral(TypeNode) #

Returns the type variables of the generic type. If the type is not generic, an empty array is returned.


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def union? : BoolLiteral #

Returns true if this type is a union type, false otherwise.

See also: #union_types.


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def union_types : Crystal::Macros::ArrayLiteral(TypeNode) #

Returns the types comforming a union type, if this is a union type. Gives a compile error otherwise.

See also: #union?.


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