Server : Apache/2.4.18 (Ubuntu) System : Linux canvaswebdesign 3.13.0-71-generic #114-Ubuntu SMP Tue Dec 1 02:34:22 UTC 2015 x86_64 User : oppastar ( 1041) PHP Version : 7.0.33-0ubuntu0.16.04.15 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, Directory : /usr/lib/ruby/2.3.0/psych/ |
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# frozen_string_literal: false require 'psych/handler' module Psych ### # This class works in conjunction with Psych::Parser to build an in-memory # parse tree that represents a YAML document. # # == Example # # parser = Psych::Parser.new Psych::TreeBuilder.new # parser.parse('--- foo') # tree = parser.handler.root # # See Psych::Handler for documentation on the event methods used in this # class. class TreeBuilder < Psych::Handler # Returns the root node for the built tree attr_reader :root # Create a new TreeBuilder instance def initialize @stack = [] @last = nil @root = nil end %w{ Sequence Mapping }.each do |node| class_eval %{ def start_#{node.downcase}(anchor, tag, implicit, style) n = Nodes::#{node}.new(anchor, tag, implicit, style) @last.children << n push n end def end_#{node.downcase} pop end } end ### # Handles start_document events with +version+, +tag_directives+, # and +implicit+ styling. # # See Psych::Handler#start_document def start_document version, tag_directives, implicit n = Nodes::Document.new version, tag_directives, implicit @last.children << n push n end ### # Handles end_document events with +version+, +tag_directives+, # and +implicit+ styling. # # See Psych::Handler#start_document def end_document implicit_end = !streaming? @last.implicit_end = implicit_end pop end def start_stream encoding @root = Nodes::Stream.new(encoding) push @root end def end_stream pop end def scalar value, anchor, tag, plain, quoted, style s = Nodes::Scalar.new(value,anchor,tag,plain,quoted,style) @last.children << s s end def alias anchor @last.children << Nodes::Alias.new(anchor) end private def push value @stack.push value @last = value end def pop x = @stack.pop @last = @stack.last x end end end