Class: Psych::Pure::Emitter::Visitor

Inherits:
Object
  • Object
show all
Defined in:
lib/psych/pure.rb

Overview

The visitor is responsible for walking the tree and generating the YAML output.

Instance Method Summary collapse

Constructor Details

#initialize(q, sequence_indent: false) ⇒ Visitor 



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# File 'lib/psych/pure.rb', line 4199

def initialize(q, sequence_indent: false)
  @q = q
  @sequence_indent = sequence_indent
end

Instance Method Details

#visit_alias(node) ⇒ Object

Visit an AliasNode.



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# File 'lib/psych/pure.rb', line 4205

def visit_alias(node)
  with_comments(node) { |value| @q.text("*#{value}") }
end

#visit_array(node) ⇒ Object

Visit an ArrayNode.



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# File 'lib/psych/pure.rb', line 4210

def visit_array(node)
  with_comments(node) do |value|
    if value.empty? || ((psych_node = node.psych_node).is_a?(Nodes::Sequence) && psych_node.style == Nodes::Sequence::FLOW && psych_node.children.any?)
      visit_array_contents_flow(node.anchor, node.tag, value)
    else
      visit_array_contents_block(node.anchor, node.tag, node.dirty, value)
    end
  end
end

#visit_hash(node) ⇒ Object

Visit a HashNode.



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# File 'lib/psych/pure.rb', line 4221

def visit_hash(node)
  with_comments(node) do |value|
    if value.empty? || ((psych_node = node.psych_node).is_a?(Nodes::Mapping) && psych_node.style == Nodes::Mapping::FLOW)
      visit_hash_contents_flow(node.anchor, node.tag, value)
    else
      visit_hash_contents_block(node.anchor, node.tag, value)
    end
  end
end

#visit_object(node) ⇒ Object

Visit an ObjectNode.



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# File 'lib/psych/pure.rb', line 4232

def visit_object(node)
  with_comments(node) do |value|
    if !node.dirty && (psych_node = node.psych_node)
      if (tag = node.tag)
        @q.text("#{tag} ")
      end

      @q.text(psych_node.source || psych_node.value)
    else
      if (tag = node.tag) && tag != "tag:yaml.org,2002:binary"
        @q.text("#{tag} ")
      end

      @q.text(dump_object(value))
    end
  end
end

#visit_omap(node) ⇒ Object

Visit an OmapNode.



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# File 'lib/psych/pure.rb', line 4251

def visit_omap(node)
  with_comments(node) do |value|
    visit_array_contents_block(node.anchor, "!!omap", false, value)
  end
end

#visit_set(node) ⇒ Object

Visit a SetNode.



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# File 'lib/psych/pure.rb', line 4258

def visit_set(node)
  with_comments(node) do |value|
    visit_hash_contents_block(node.anchor, "!set", value)
  end
end

#visit_string(node) ⇒ Object

Visit a StringNode.



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# File 'lib/psych/pure.rb', line 4265

def visit_string(node)
  with_comments(node) do |value|
    if !node.dirty && (psych_node = node.psych_node)
      if (tag = node.tag)
        @q.text("#{tag} ")
      end

      @q.text(psych_node.source || psych_node.value)
    else
      if (tag = node.tag) && tag != "tag:yaml.org,2002:binary"
        @q.text("#{tag} ")
      end

      @q.text(dump_object(value))
    end
  end
end