module Puppet::Pops::PuppetStack
Utility class for keeping track of the “Puppet stack”, ie the file and line numbers of Puppet
Code that created the current context.
To use this make a call with:
“`rb Puppet::Pops::PuppetStack.stack
(file, line, receiver, message, args) “`
To get the stack call:
“`rb Puppet::Pops::PuppetStack.stacktrace
“`
or
“`rb Puppet::Pops::PuppetStack.top_of_stack
“`
To support testing, a given file that is an empty string, or nil as well as a nil line number are supported. Such stack frames will be represented with the text `unknown` and `0´ respectively.
Public Class Methods
stack(file, line, obj, message, args, &block)
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# File lib/puppet/pops/puppet_stack.rb 32 def self.stack(file, line, obj, message, args, &block) 33 file = 'unknown' if (file.nil? || file == '') 34 line = 0 if line.nil? 35 36 result = nil 37 @stack.value.unshift([file, line]) 38 begin 39 if block_given? 40 result = obj.send(message, *args, &block) 41 else 42 result = obj.send(message, *args) 43 end 44 ensure 45 @stack.value.shift() 46 end 47 result 48 end
stacktrace()
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# File lib/puppet/pops/puppet_stack.rb 50 def self.stacktrace 51 @stack.value.dup 52 end
top_of_stack()
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Returns an Array with the top of the puppet stack, or an empty Array if there was no such entry.
# File lib/puppet/pops/puppet_stack.rb 56 def self.top_of_stack 57 @stack.value.first || [] 58 end