Class: PryExceptionExplorer::LazyFrame

Inherits:

Object

• Object
• PryExceptionExplorer::LazyFrame

show all

Defined in:

lib/pry-exception_explorer/lazy_frame.rb

Defined Under Namespace

Classes: NullFrame

Constant Summary

START_FRAME_OFFSET =

we need to jump over a few irrelevant frames to begin with

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Instance Method Summary (collapse)

• - (LazyFrame) initialize(frame, frame_counter = 0, call_stack = nil) constructor

  A new instance of LazyFrame.

• - (Class) klass

  The class of the self of the frame.

• - (Symbol^?) method_name

  The name of the active method in the frame (or nil).

• - (LazyFrame) prev

  The caller frame.

• - (Object) self

  The object context of the frame (the self).

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# File 'lib/pry-exception_explorer/lazy_frame.rb', line 13

def initialize(frame, frame_counter = 0, call_stack = nil)
  @frame         = frame
  @frame_counter = frame_counter
  @call_stack    = call_stack
end

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# File 'lib/pry-exception_explorer/lazy_frame.rb', line 20

def klass
  @frame.eval("self.class")
end

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# File 'lib/pry-exception_explorer/lazy_frame.rb', line 30

def method_name
  @frame.eval("__method__")
end

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# File 'lib/pry-exception_explorer/lazy_frame.rb', line 35

def prev
  if @call_stack
    if @frame_counter < (@call_stack.size - 1)
      LazyFrame.new(@call_stack[@frame_counter + 1], @frame_counter + 1, @call_stack)
    else
      NullFrame.new
    end
  else
    LazyFrame.new(binding.of_caller(@frame_counter + START_FRAME_OFFSET), @frame_counter + 1)
  end
end

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# File 'lib/pry-exception_explorer/lazy_frame.rb', line 25

def self
  @frame.eval("self")
end