Class: C::Label

Inherits:

Node

• Object
• Node
• C::Label

Defined in:

lib/cast/parse.rb,
lib/cast/c_nodes.rb

Direct Known Subclasses

Case, Default, PlainLabel

Constant Summary

Constants inherited from Node

Node::INSPECT_TAB

Instance Attribute Summary

Attributes inherited from Node

#parent, #pos, #subclasses

Class Method Summary

• .parse(s, parser = nil) ⇒ Object

Methods inherited from Node

#==, #=~, abstract, add_field, #assert_invariants, #attached?, child, #clone, #depth_first, #detach, #detached?, #dup, #each, #eql?, field, #fields, fields, #hash, inherited, initializer, #insert_next, #insert_prev, #inspect, inspect1, #list_next, #list_prev, #match?, #method_missing, new_at, #next, #node_after, #node_before, #postorder, #preorder, #prev, #remove_node, #replace_node, #replace_with, #reverse_depth_first, #reverse_each, #reverse_postorder, #reverse_preorder, subclasses_recursive, #swap_with

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class C::Node

Class Method Details

.parse(s, parser = nil) ⇒ Object

# File 'lib/cast/parse.rb', line 191

def self.parse(s, parser=nil)
  parser ||= C.default_parser
  ents = parser.parse("void f() {switch (0) #{s};}").entities
  if ents.length == 1                              &&  # } void f() {
      ents[0].def.stmts.length == 1                &&  # ;
      ents[0].def.stmts[0].stmt                    &&  #
      ents[0].def.stmts[0].stmt.labels.length == 1 &&  # x
      ents[0].def.stmts[0].stmt.labels[0].is_a?(self)
    return ents[0].def.stmts[0].stmt.labels[0].detach
  else
    raise ParseError, "invalid #{self}"
  end
end