Class: RubyParserStuff::StackState

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_parser_extras.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name) ⇒ StackState

Returns a new instance of StackState.



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# File 'lib/ruby_parser_extras.rb', line 1315

def initialize(name)
  @name = name
  @stack = [false]
  @debug = false
end

Instance Attribute Details

#debug ⇒ Object

Returns the value of attribute debug.



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# File 'lib/ruby_parser_extras.rb', line 1313

def debug
  @debug
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/ruby_parser_extras.rb', line 1311

def name
  @name
end

#stack ⇒ Object (readonly)

Returns the value of attribute stack.



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# File 'lib/ruby_parser_extras.rb', line 1312

def stack
  @stack
end

Instance Method Details

#inspect ⇒ Object 



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# File 'lib/ruby_parser_extras.rb', line 1321

def inspect
  "StackState(#{@name}, #{@stack.inspect})"
end

#is_in_state ⇒ Object 



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# File 'lib/ruby_parser_extras.rb', line 1325

def is_in_state
  p :stack_is_in_state => [name, @stack.last, caller.first] if debug
  @stack.last
end

#lexpop ⇒ Object 



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# File 'lib/ruby_parser_extras.rb', line 1330

def lexpop
  p :stack_lexpop => caller.first if debug
  raise if @stack.size == 0
  a = @stack.pop
  b = @stack.pop
  @stack.push(a || b)
end

#pop ⇒ Object 



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# File 'lib/ruby_parser_extras.rb', line 1338

def pop
  r = @stack.pop
  p :stack_pop => [name, r, @stack, caller.first] if debug
  @stack.push false if @stack.size == 0
  r
end

#push(val) ⇒ Object 



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# File 'lib/ruby_parser_extras.rb', line 1345

def push val
  @stack.push val
  p :stack_push => [name, @stack, caller.first] if debug
  nil
end

#restore(oldstate) ⇒ Object 



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# File 'lib/ruby_parser_extras.rb', line 1357

def restore oldstate
  @stack.replace oldstate
end

#store ⇒ Object 



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# File 'lib/ruby_parser_extras.rb', line 1351

def store
  result = @stack.dup
  @stack.replace [false]
  result
end