Class: SyntaxTree::ARef
Overview
ARef represents when you’re pulling a value out of a collection at a specific index. Put another way, it’s any time you’re calling the method #[].
collection[index]
The nodes usually contains two children, the collection and the index. In some cases, you don’t necessarily have the second child node, because you can call procs with a pretty esoteric syntax. In the following example, you wouldn’t have a second child node:
collection[]
Instance Attribute Summary collapse
-
#collection ⇒ Object
readonly
- untyped
-
the value being indexed.
-
#comments ⇒ Object
readonly
- Array[ Comment | EmbDoc ]
-
the comments attached to this node.
-
#index ⇒ Object
readonly
- nil | Args
-
the value being passed within the brackets.
Attributes inherited from Node
Instance Method Summary collapse
- #accept(visitor) ⇒ Object
- #child_nodes ⇒ Object (also: #deconstruct)
- #deconstruct_keys(_keys) ⇒ Object
- #format(q) ⇒ Object
-
#initialize(collection:, index:, location:, comments: []) ⇒ ARef
constructor
A new instance of ARef.
Methods inherited from Node
#construct_keys, #pretty_print, #to_json
Constructor Details
#initialize(collection:, index:, location:, comments: []) ⇒ ARef
Returns a new instance of ARef.
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# File 'lib/syntax_tree/node.rb', line 446 def initialize(collection:, index:, location:, comments: []) @collection = collection @index = index @location = location @comments = comments end |
Instance Attribute Details
#collection ⇒ Object (readonly)
- untyped
-
the value being indexed
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# File 'lib/syntax_tree/node.rb', line 438 def collection @collection end |
#comments ⇒ Object (readonly)
- Array[ Comment | EmbDoc ]
-
the comments attached to this node
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# File 'lib/syntax_tree/node.rb', line 444 def comments @comments end |
#index ⇒ Object (readonly)
- nil | Args
-
the value being passed within the brackets
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# File 'lib/syntax_tree/node.rb', line 441 def index @index end |
Instance Method Details
#accept(visitor) ⇒ Object
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# File 'lib/syntax_tree/node.rb', line 453 def accept(visitor) visitor.visit_aref(self) end |
#child_nodes ⇒ Object Also known as: deconstruct
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# File 'lib/syntax_tree/node.rb', line 457 def child_nodes [collection, index] end |
#deconstruct_keys(_keys) ⇒ Object
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# File 'lib/syntax_tree/node.rb', line 463 def deconstruct_keys(_keys) { collection: collection, index: index, location: location, comments: comments } end |
#format(q) ⇒ Object
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# File 'lib/syntax_tree/node.rb', line 472 def format(q) q.group do q.format(collection) q.text("[") if index q.indent do q.breakable("") q.format(index) end q.breakable("") end q.text("]") end end |