Tracing method calls using TracePoint

tracer.rb

class Debugger
  def initialize(events)
    @tp = TracePoint.new(*(events || %i[call b_call raise])) do |tp|
      tp.binding.irb
    end
    @tp.disable
  end

  def trace(&block)
    @tp.enable
    res = block.call
    @tp.disable
    res
  end

  def self.trace(events: nil, &block)
    Debugger.new(events).trace(&block)
  end
end

def method_a(args)
  method_b(args)
end

def method_b(args)
  p = -> a { method_c(a) }
  p.call(args)
end

def method_c(args)
  puts args
end

def main
  Debugger.trace do
    method_a([1, :x])
  end
end

main