hacks/call_stack

This is a hack for accessing the call stack. It uses set_trace_func, so using this hack may degrade performance. The result will be a global variable $call_stack, which is an array containing information about the caller. Each element of the array is itself an array containing the same information as would be returned by set_trace_func. The current call information is stored in $current_call.

TODO: I need some good tests for this.

Eg.:

  def foo; eval("x = 42", $call_stack[1][4]); end
  def bar; foo; end
  x = nil
  bar
  puts x

class CallStack < Object

The type of $call_stack is a CallStack. It is a singleton class, and cannot be instantiated.

Public Methods

[](index)

Find $current_call for index+1 levels above the current one.

Returns: the requested value.

to_a()

Return a copy of the call stack as an array.

The current call stack as an array.

Public Methods

caller_file(level = 0)

Return the file of the caller

level	the level of the caller you want to query

caller_lineno(level = 0)

Return the line of the caller

level	the level of the caller you want to query

caller_func(level = 0)

Return the function the caller was in

level	the level of the caller you want to query

caller_binding(level = 0)

Return the caller's binding

level	the level of the caller who's binding you want

caller_class(level = 0)

Return the class of the caller

level	the level of the caller who's class you want

caller_self(level = 0)

Return the object ("self") of the caller

level	the level of the caller who's "self" you want

Requires