Class: Puppet::Pops::Model::TreeDumper

Inherits:
Object
  • Object
show all
Defined in:
lib/puppet/pops/model/tree_dumper.rb

Overview

Base class for formatted textual dump of a “model”

Direct Known Subclasses

ModelTreeDumper

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(initial_indentation = 0) ⇒ TreeDumper

Returns a new instance of TreeDumper.



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# File 'lib/puppet/pops/model/tree_dumper.rb', line 6

def initialize initial_indentation = 0
  @@dump_visitor ||= Puppet::Pops::Visitor.new(nil,"dump",0,0)
  @indent_count = initial_indentation
end

Instance Attribute Details

#indent_count ⇒ Object 



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# File 'lib/puppet/pops/model/tree_dumper.rb', line 5

def indent_count
  @indent_count
end

Instance Method Details

#do_dump(o) ⇒ Object 



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# File 'lib/puppet/pops/model/tree_dumper.rb', line 15

def do_dump(o)
  @@dump_visitor.visit_this_0(self, o)
end

#dump(o) ⇒ Object 



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# File 'lib/puppet/pops/model/tree_dumper.rb', line 11

def dump(o)
  format(do_dump(o))
end

#format(x) ⇒ Object 



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# File 'lib/puppet/pops/model/tree_dumper.rb', line 23

def format(x)
  result = ''.dup
  parts = format_r(x)
  parts.each_index do |i|
    if i > 0
      # separate with space unless previous ends with whitespace or (
      result << ' ' if parts[i] != ")" && parts[i-1] !~ /.*(?:\s+|\()$/ && parts[i] !~ /^\s+/
    end
    result << parts[i].to_s
  end
  result
end

#format_r(x) ⇒ Object 



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# File 'lib/puppet/pops/model/tree_dumper.rb', line 36

def format_r(x)
  result = []
  case x
  when :break
    result << "\n" + indent
  when :indent
    @indent_count += 1
  when :dedent
    @indent_count -= 1
  when Array
    result << '('
    result += x.collect {|a| format_r(a) }.flatten
    result << ')'
  when Symbol
    result << x.to_s # Allows Symbols in arrays e.g. ["text", =>, "text"]
  else
    result << x
  end
  result
end

#indent ⇒ Object 



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# File 'lib/puppet/pops/model/tree_dumper.rb', line 19

def indent
  "  " * indent_count
end

#is_nop?(o) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/pops/model/tree_dumper.rb', line 57

def is_nop? o
  o.nil? || o.is_a?(Puppet::Pops::Model::Nop)
end