abstract class Crystal::Macros::ASTNode

Overview

This is the base class of all AST nodes. This methods are available to all AST nodes.

Direct Known Subclasses

Defined in:

compiler/crystal/macros.cr

Instance Method Summary

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 !=(other : ASTNode) : BoolLiteral #

Returns true if this node's textual representation is not the same as the other node.


[View source]
def ==(other : ASTNode) : BoolLiteral #

Returns true if this node's textual representation is the same as the other node.


[View source]
def class_name : StringLiteral #

Returns a StringLiteral that contains this node's name.

macro test
  {{ "foo".class_name }}
end

puts test # => prints StringLiteral

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def id : MacroId #

Returns this node as a MacroId. Useful when you need an identifier out of a StringLiteral, SymbolLiteral, Var or Call.

macro define_method(name, content)
  def {{name.id}}
    {{content}}
  end
end

define_method :foo, 1
define_method "bar", 2
define_method baz, 3

puts foo # => prints 1
puts bar # => prints 2
puts baz # => prints 3

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def raise(message) : NoReturn #

Gives a compile-time error with the given message. This will highlight this node in the error message.


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def stringify : StringLiteral #

Returns a StringLiteral that contains this node's textual representation. Note that invoking stringify on a string literal will return a StringLiteral that contains a string literal.

macro test
  {{ "foo".stringify }}
end

puts test # prints "foo" (including the double quotes)

[View source]