Class: MarkdownExec::LinkHistory

Inherits:

Object

show all

Instance Method Summary collapse

#initialize ⇒ LinkHistory constructor

A new instance of LinkHistory.
#peek ⇒ Object

Peeks at the most recent LinkState, returns an empty LinkState if stack is empty.
#pop ⇒ Object

Pops the most recent LinkState off the stack, returns an empty LinkState if stack is empty.
#prior_state_exist? ⇒ Boolean
#push(link_state) ⇒ Object

Pushes a LinkState onto the stack.

Returns a new instance of LinkHistory.



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# File 'lib/link_history.rb', line 106

def initialize
  @history = []
end

Peeks at the most recent LinkState, returns an empty LinkState if stack is empty.



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# File 'lib/link_history.rb', line 112

def peek
  @history.last || LinkState.empty
end

Pops the most recent LinkState off the stack, returns an empty LinkState if stack is empty.



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# File 'lib/link_history.rb', line 118

def pop
  @history.pop || LinkState.empty
end

Returns:



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# File 'lib/link_history.rb', line 122

def prior_state_exist?
  peek.document_filename.present?
end

Pushes a LinkState onto the stack.



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# File 'lib/link_history.rb', line 127

def push(link_state)
  @history.push(link_state)
end