An object representation of a stack frame, initialized by Kernel#caller_locations.

For example:

# caller_locations.rb
def a(skip)
  caller_locations(skip)
end
def b(skip)
  a(skip)
end
def c(skip)
  b(skip)
end

c(0..2).map do |call|
  puts call.to_s
end

Running ruby caller_locations.rb will produce:

caller_locations.rb:2:in `a'
caller_locations.rb:5:in `b'
caller_locations.rb:8:in `c'

Here's another example with a slightly different result:

# foo.rb
class Foo
  attr_accessor :locations
  def initialize(skip)
    @locations = caller_locations(skip)
  end
end

Foo.new(0..2).locations.map do |call|
  puts call.to_s
end

Now run ruby foo.rb and you should see:

init.rb:4:in `initialize'
init.rb:8:in `new'
init.rb:8:in `<main>'

Returns the full file path of this frame.

Same as path, but includes the absolute path.

Returns the base label of this frame.

Usually same as label, without decoration.

Returns the same as calling inspect on the string representation of to_str

Returns the label of this frame.

Usually consists of method, class, module, etc names with decoration.

Consider the following example:

def foo
  puts caller_locations(0).first.label

  1.times do
    puts caller_locations(0).first.label

    1.times do
      puts caller_locations(0).first.label
    end

  end
end

The result of calling foo is this:

label: foo
label: block in foo
label: block (2 levels) in foo

Returns the line number of this frame.

For example, using caller_locations.rb from Thread::Backtrace::Location

loc = c(0..1).first
loc.lineno #=> 2

Returns the file name of this frame.

For example, using caller_locations.rb from Thread::Backtrace::Location

loc = c(0..1).first
loc.path #=> caller_locations.rb

Returns a Kernel#caller style string representing this frame.