Class: SyntaxTree::Backref

Inherits:
Object
  • Object
show all
Defined in:
lib/syntax_tree.rb

Overview

Backref represents a global variable referencing a matched value. It comes in the form of a $ followed by a positive integer.

$1

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value:, location:, comments: []) ⇒ Backref

Returns a new instance of Backref.



2059
2060
2061
2062
2063
 
# File 'lib/syntax_tree.rb', line 2059

def initialize(value:, location:, comments: [])
  @value = value
  @location = location
  @comments = comments
end

Instance Attribute Details

#comments ⇒ Object (readonly)

Array[ Comment | EmbDoc ]

the comments attached to this node



2057
2058
2059
 
# File 'lib/syntax_tree.rb', line 2057

def comments
  @comments
end

#location ⇒ Object (readonly)

Location

the location of this node



2054
2055
2056
 
# File 'lib/syntax_tree.rb', line 2054

def location
  @location
end

#value ⇒ Object (readonly)

String

the name of the global backreference variable



2051
2052
2053
 
# File 'lib/syntax_tree.rb', line 2051

def value
  @value
end

Instance Method Details

#child_nodes ⇒ Object 



2065
2066
2067
 
# File 'lib/syntax_tree.rb', line 2065

def child_nodes
  []
end

#format(q) ⇒ Object 



2069
2070
2071
 
# File 'lib/syntax_tree.rb', line 2069

def format(q)
  q.text(value)
end

#pretty_print(q) ⇒ Object 



2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
 
# File 'lib/syntax_tree.rb', line 2073

def pretty_print(q)
  q.group(2, "(", ")") do
    q.text("backref")

    q.breakable
    q.pp(value)

    q.pp(Comment::List.new(comments))
  end
end

#to_json(*opts) ⇒ Object 



2084
2085
2086
2087
2088
 
# File 'lib/syntax_tree.rb', line 2084

def to_json(*opts)
  { type: :backref, value: value, loc: location, cmts: comments }.to_json(
    *opts
  )
end