Class: CodeTools::AST::RegexLiteral

Inherits:
Node
  • Object
show all
Defined in:
lib/rubinius/ast/literals.rb

Instance Attribute Summary collapse

Attributes inherited from Node

#line

Instance Method Summary collapse

Methods inherited from Node

#ascii_graph, #attributes, #children, match_arguments?, match_send?, #new_block_generator, #new_generator, #node_name, #or_bytecode, #pos, #set_child, transform, #transform, transform_comment, transform_kind, transform_kind=, transform_name, #value_defined, #visit, #walk

Constructor Details

#initialize(line, str, flags) ⇒ RegexLiteral

Returns a new instance of RegexLiteral.



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# File 'lib/rubinius/ast/literals.rb', line 356

def initialize(line, str, flags)
  @line = line
  @source = str
  @options = flags
end

Instance Attribute Details

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/rubinius/ast/literals.rb', line 354

def options
  @options
end

#source ⇒ Object

Returns the value of attribute source.



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# File 'lib/rubinius/ast/literals.rb', line 354

def source
  @source
end

Instance Method Details

#bytecode(g) ⇒ Object 



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# File 'lib/rubinius/ast/literals.rb', line 362

def bytecode(g)
  pos(g)

  # A regex literal should only be converted to a Regexp the first time it
  # is encountered. We push a literal nil here, and then overwrite the
  # literal value with the created Regexp if it is nil, i.e. the first time
  # only. Subsequent encounters will use the previously created Regexp
  idx = g.add_literal(nil)
  g.push_literal_at idx
  g.dup
  g.is_nil

  lbl = g.new_label
  g.gif lbl
  g.pop
  g.push_cpath_top
  g.find_const :Regexp
  g.push_literal @source
  g.push @options
  g.send :new, 2
  g.set_literal idx
  lbl.set!
end

#defined(g) ⇒ Object 



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# File 'lib/rubinius/ast/literals.rb', line 386

def defined(g)
  g.push_literal "expression"
end

#to_sexp ⇒ Object 



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# File 'lib/rubinius/ast/literals.rb', line 390

def to_sexp
  [:regex, @source, @options]
end