module Psych

def self.parse_stream yaml, filename = nil, &block

See Psych::Nodes for more information about YAML AST.

end
ex.message # => "(file.txt): found character that cannot start any token"
ex.file # => 'file.txt'
rescue Psych::SyntaxError => ex
Psych.parse_stream("--- `", "file.txt")
begin

end
node # => #
Psych.parse_stream("--- a\n--- b") do |node|

Psych.parse_stream("---\n - a\n - b") # => #

Example:

Raises a Psych::SyntaxError when a YAML syntax error is detected.

block as it's being parsed.
If a block is given, a Psych::Nodes::Document node will be yielded to the

raised.
+filename+ is used in the exception message if a Psych::SyntaxError is
This method can handle multiple YAML documents contained in +yaml+.
Parse a YAML string in +yaml+. Returns the Psych::Nodes::Stream.
## 
def self.parse_stream yaml, filename = nil, &block
  if block_given?
    parser = Psych::Parser.new(Handlers::DocumentStream.new(&block))
    parser.parse yaml, filename
  else
    parser = self.parser
    parser.parse yaml, filename
    parser.handler.root
  end
end