Class: LiveCable::Rendering::DependencyVisitor

Inherits:
Prism::Visitor
  • Object
show all
Defined in:
lib/live_cable/rendering/dependency_visitor.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DependencyVisitor

Returns a new instance of DependencyVisitor.



15
16
17
18
19
20
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 15

def initialize
  super
  @local_reads = []
  @local_writes = []
  @component_method_calls = Set.new
end

Instance Attribute Details

#component_method_calls ⇒ Set<Symbol> (readonly)

Returns:

  • (Set<Symbol>) 


13
14
15
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 13

def component_method_calls
  @component_method_calls
end

#local_reads ⇒ Array<Symbol> (readonly)

Returns:

  • (Array<Symbol>) 


7
8
9
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 7

def local_reads
  @local_reads
end

#local_writes ⇒ Array<Symbol> (readonly)

Returns:

  • (Array<Symbol>) 


10
11
12
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 10

def local_writes
  @local_writes
end

Instance Method Details

#visit_call_node(node) ⇒ void

This method returns an undefined value.

Track variable method calls (e.g., foo without parens) Also track component.method_name calls

Parameters:

  • node (Prism::CallNode) 


34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 34

def visit_call_node(node)
  # Track variable calls (implicit self)
  @local_reads |= [node.name] if node.variable_call?

  # Track component.method_name calls
  if component_receiver?(node.receiver)
    @component_method_calls << node.name
  end

  super
end

#visit_local_variable_and_write_node(node) ⇒ void

This method returns an undefined value.

Track local variable and writes (&&=)

Parameters:

  • node (Prism::LocalVariableAndWriteNode) 


66
67
68
69
70
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 66

def visit_local_variable_and_write_node(node)
  @local_writes |= [node.name]
  @local_reads |= [node.name]
  super
end

#visit_local_variable_operator_write_node(node) ⇒ void

This method returns an undefined value.

Track local variable operator writes (+=, ||=, etc)

Parameters:

  • node (Prism::LocalVariableOperatorWriteNode) 


57
58
59
60
61
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 57

def visit_local_variable_operator_write_node(node)
  @local_writes |= [node.name]
  @local_reads |= [node.name] # Reads before writing
  super
end

#visit_local_variable_or_write_node(node) ⇒ void

This method returns an undefined value.

Track local variable or writes (||=)

Parameters:

  • node (Prism::LocalVariableOrWriteNode) 


75
76
77
78
79
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 75

def visit_local_variable_or_write_node(node)
  @local_writes |= [node.name]
  @local_reads |= [node.name]
  super
end

#visit_local_variable_read_node(node) ⇒ void

This method returns an undefined value.

Track all local variable reads

Parameters:

  • node (Prism::LocalVariableReadNode) 


25
26
27
28
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 25

def visit_local_variable_read_node(node)
  @local_reads |= [node.name]
  super
end

#visit_local_variable_write_node(node) ⇒ void

This method returns an undefined value.

Track local variable writes

Parameters:

  • node (Prism::LocalVariableWriteNode) 


49
50
51
52
 
# File 'lib/live_cable/rendering/dependency_visitor.rb', line 49

def visit_local_variable_write_node(node)
  @local_writes |= [node.name]
  super
end