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module Psych
module JSON
###
# Psych::JSON::TreeBuilder is an event based AST builder. Events are sent
# to an instance of Psych::JSON::TreeBuilder and a JSON AST is constructed.
class TreeBuilder < Psych::TreeBuilder
def start_document version, tag_directives, implicit
super(version, tag_directives, !streaming?)
end
def end_document implicit_end = !streaming?
super(implicit_end)
end
def start_mapping anchor, tag, implicit, style
super(anchor, tag, implicit, Nodes::Mapping::FLOW)
end
def start_sequence anchor, tag, implicit, style
super(anchor, tag, implicit, Nodes::Sequence::FLOW)
end
def scalar value, anchor, tag, plain, quoted, style
if "tag:yaml.org,2002:null" == tag
super('null', nil, nil, true, false, Nodes::Scalar::PLAIN)
else
super
end
end
end
end
end
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