Class: Mirah::AST::OptionalArgument

Inherits:
Argument show all
Includes:
Named, Scoped
Defined in:
lib/mirah/ast/method.rb

Instance Attribute Summary

Attributes included from Named

#name

Attributes included from Typed

#type

Attributes inherited from Node

#children, #inferred_type, #newline, #parent, #position

Instance Method Summary collapse

Methods included from Scoped

#containing_scope, #scope

Methods included from Named

#string_value, #to_s, #validate_name

Methods inherited from Argument

#resolved!

Methods inherited from Node

#<<, ===, #[], #[]=, #_dump, _load, #_set_parent, child, child_name, #child_nodes, #each, #empty?, #expr?, #inferred_type!, #initialize_copy, #insert, #inspect, #inspect_children, #line_number, #log, #precompile, #resolve_if, #resolved!, #resolved?, #simple_name, #string_value, #temp, #to_s, #top_level?, #validate_child, #validate_children

Constructor Details

#initialize(parent, line_number, name, &block) ⇒ OptionalArgument

Returns a new instance of OptionalArgument.



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# File 'lib/mirah/ast/method.rb', line 155

def initialize(parent, line_number, name, &block)
  super(parent, line_number, &block)
  self.name = name
end

Instance Method Details

#infer(typer, expression) ⇒ Object 



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# File 'lib/mirah/ast/method.rb', line 160

def infer(typer, expression)
  resolve_if(typer) do
    scope.static_scope << name
    # if not already typed, check parent of parent (MethodDefinition)
    # for signature info
    method_def = parent.parent
    signature = method_def.signature
    value_type = value.infer(typer, true)
    declared_type = type_node.type_reference(typer) if type_node
    signature[name.intern] = declared_type || value_type
  end
end