Class: Rubinius::ToolSet.current::TS::AST::Match2

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

Instance Attribute Summary collapse

Attributes inherited from Node

#line

Instance Method Summary collapse

Methods inherited from Node

#ascii_graph, #attributes, #children, #defined, 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, pattern, value) ⇒ Match2

Returns a new instance of Match2.



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# File 'lib/rubinius/ast/control_flow.rb', line 468

def initialize(line, pattern, value)
  @line = line
  @pattern = pattern
  @value = value
end

Instance Attribute Details

#pattern ⇒ Object

Returns the value of attribute pattern.



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# File 'lib/rubinius/ast/control_flow.rb', line 466

def pattern
  @pattern
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/rubinius/ast/control_flow.rb', line 466

def value
  @value
end

Instance Method Details

#bytecode(g) ⇒ Object 



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# File 'lib/rubinius/ast/control_flow.rb', line 474

def bytecode(g)
  pos(g)

  @pattern.bytecode(g)
  @value.bytecode(g)
  g.send :=~, 1
  if @pattern.kind_of? RegexLiteral
    regexp = Regexp.new(@pattern.source)
    # TODO: this code cannot just use Rubinius-specific methods.
    # Fix without using respond_to?.
    if regexp.respond_to? :name_table
      if table = regexp.name_table
        table.sort_by { |name, idx| idx }.each do |name, idx|
          local = g.state.scope.new_local name
          g.last_match 5, idx.last - 1

          case local
          when Compiler::LocalVariable
            g.set_local local.slot
          when Compiler::EvalLocalVariable
            g.push_variables
            g.swap
            g.push_literal name
            g.swap
            g.send :set_eval_local, 2, false
          else
            raise CompileError, "unknown type of local #{local.inspect}"
          end

          g.pop
        end
      end
    end
  end
end

#to_sexp ⇒ Object 



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# File 'lib/rubinius/ast/control_flow.rb', line 510

def to_sexp
  [:match2, @pattern.to_sexp, @value.to_sexp]
end