Class: SyntaxTree::FndPtn
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
-
#comments ⇒ Object
readonly
- Array[ Comment | EmbDoc ]
-
the comments attached to this node.
-
#constant ⇒ Object
readonly
- nil | Node
-
the optional constant wrapper.
-
#left ⇒ Object
readonly
- VarField
-
the splat on the left-hand side.
-
#right ⇒ Object
readonly
- VarField
-
the splat on the right-hand side.
-
#values ⇒ Object
readonly
- Array[ Node ]
-
the list of positional expressions in the pattern that are being matched.
Attributes inherited from Node
Instance Method Summary collapse
- #===(other) ⇒ Object
- #accept(visitor) ⇒ Object
- #child_nodes ⇒ Object (also: #deconstruct)
- #copy(constant: nil, left: nil, values: nil, right: nil, location: nil) ⇒ Object
- #deconstruct_keys(_keys) ⇒ Object
- #format(q) ⇒ Object
-
#initialize(constant:, left:, values:, right:, location:) ⇒ FndPtn
constructor
A new instance of FndPtn.
Methods inherited from Node
#construct_keys, #end_char, #pretty_print, #start_char, #to_json, #to_mermaid
Constructor Details
#initialize(constant:, left:, values:, right:, location:) ⇒ FndPtn
Returns a new instance of FndPtn.
5413 5414 5415 5416 5417 5418 5419 5420 |
# File 'lib/syntax_tree/node.rb', line 5413 def initialize(constant:, left:, values:, right:, location:) @constant = constant @left = left @values = values @right = right @location = location @comments = [] end |
Instance Attribute Details
#comments ⇒ Object (readonly)
- Array[ Comment | EmbDoc ]
-
the comments attached to this node
5411 5412 5413 |
# File 'lib/syntax_tree/node.rb', line 5411 def comments @comments end |
#constant ⇒ Object (readonly)
- nil | Node
-
the optional constant wrapper
5398 5399 5400 |
# File 'lib/syntax_tree/node.rb', line 5398 def constant @constant end |
#left ⇒ Object (readonly)
- VarField
-
the splat on the left-hand side
5401 5402 5403 |
# File 'lib/syntax_tree/node.rb', line 5401 def left @left end |
#right ⇒ Object (readonly)
- VarField
-
the splat on the right-hand side
5408 5409 5410 |
# File 'lib/syntax_tree/node.rb', line 5408 def right @right end |
#values ⇒ Object (readonly)
- Array[ Node ]
-
the list of positional expressions in the pattern that
are being matched
5405 5406 5407 |
# File 'lib/syntax_tree/node.rb', line 5405 def values @values end |
Instance Method Details
#===(other) ⇒ Object
5482 5483 5484 5485 5486 |
# File 'lib/syntax_tree/node.rb', line 5482 def ===(other) other.is_a?(FndPtn) && constant === other.constant && left === other.left && ArrayMatch.call(values, other.values) && right === other.right end |
#accept(visitor) ⇒ Object
5422 5423 5424 |
# File 'lib/syntax_tree/node.rb', line 5422 def accept(visitor) visitor.visit_fndptn(self) end |
#child_nodes ⇒ Object Also known as: deconstruct
5426 5427 5428 |
# File 'lib/syntax_tree/node.rb', line 5426 def child_nodes [constant, left, *values, right] end |
#copy(constant: nil, left: nil, values: nil, right: nil, location: nil) ⇒ Object
5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 |
# File 'lib/syntax_tree/node.rb', line 5430 def copy(constant: nil, left: nil, values: nil, right: nil, location: nil) node = FndPtn.new( constant: constant || self.constant, left: left || self.left, values: values || self.values, right: right || self.right, location: location || self.location ) node.comments.concat(comments.map(&:copy)) node end |
#deconstruct_keys(_keys) ⇒ Object
5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 |
# File 'lib/syntax_tree/node.rb', line 5446 def deconstruct_keys(_keys) { constant: constant, left: left, values: values, right: right, location: location, comments: comments } end |
#format(q) ⇒ Object
5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 |
# File 'lib/syntax_tree/node.rb', line 5457 def format(q) q.format(constant) if constant q.group do q.text("[") q.indent do q.breakable_empty q.text("*") q.format(left) q.comma_breakable q.seplist(values) { |value| q.format(value) } q.comma_breakable q.text("*") q.format(right) end q.breakable_empty q.text("]") end end |