Class: SyntaxTree::FndPtn

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

Overview

FndPtn represents matching against a pattern where you find a pattern in an array using the Ruby 3.0+ pattern matching syntax.

case value
in [*, 7, *]
end

Instance Attribute Summary collapse

Attributes inherited from Node

#location

Instance Method Summary collapse

Methods inherited from Node

#construct_keys, #pretty_print, #to_json

Constructor Details

#initialize(constant:, left:, values:, right:, location:, comments: []) ⇒ FndPtn

Returns a new instance of FndPtn.



4544
4545
4546
4547
4548
4549
4550
4551
 
# File 'lib/syntax_tree/node.rb', line 4544

def initialize(constant:, left:, values:, right:, location:, comments: [])
  @constant = constant
  @left = left
  @values = values
  @right = right
  @location = location
  @comments = comments
end

Instance Attribute Details

#comments ⇒ Object (readonly)

[Array[ Comment | EmbDoc ]] the comments attached to this node



4542
4543
4544
 
# File 'lib/syntax_tree/node.rb', line 4542

def comments
  @comments
end

#constant ⇒ Object (readonly)

[nil | untyped] the optional constant wrapper



4529
4530
4531
 
# File 'lib/syntax_tree/node.rb', line 4529

def constant
  @constant
end

#left ⇒ Object (readonly)

[VarField] the splat on the left-hand side



4532
4533
4534
 
# File 'lib/syntax_tree/node.rb', line 4532

def left
  @left
end

#right ⇒ Object (readonly)

[VarField] the splat on the right-hand side



4539
4540
4541
 
# File 'lib/syntax_tree/node.rb', line 4539

def right
  @right
end

#values ⇒ Object (readonly)

[Array[ untyped ]] the list of positional expressions in the pattern that are being matched



4536
4537
4538
 
# File 'lib/syntax_tree/node.rb', line 4536

def values
  @values
end

Instance Method Details

#accept(visitor) ⇒ Object 



4553
4554
4555
 
# File 'lib/syntax_tree/node.rb', line 4553

def accept(visitor)
  visitor.visit_fndptn(self)
end

#child_nodes ⇒ Object Also known as: deconstruct 



4557
4558
4559
 
# File 'lib/syntax_tree/node.rb', line 4557

def child_nodes
  [constant, left, *values, right]
end

#deconstruct_keys(_keys) ⇒ Object 



4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
 
# File 'lib/syntax_tree/node.rb', line 4563

def deconstruct_keys(_keys)
  {
    constant: constant,
    left: left,
    values: values,
    right: right,
    location: location,
    comments: comments
  }
end

#format(q) ⇒ Object 



4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
 
# File 'lib/syntax_tree/node.rb', line 4574

def format(q)
  q.format(constant) if constant
  q.group(0, "[", "]") do
    q.text("*")
    q.format(left)
    q.comma_breakable

    q.seplist(values) { |value| q.format(value) }
    q.comma_breakable

    q.text("*")
    q.format(right)
  end
end