Create a new Psych::Emitter
that writes to io
.
Emit a scalar with value
, anchor
, tag
, and a plain
or quoted
string type with style
.
Get the output style, canonical or not.
Set
the output style to canonical, or not.
Get the indentation level.
Set
the indentation level to level
. The level must be less than 10 and greater than 1.
Start streaming using encoding
A class that provides two-phase lock with a counter. See Sync_m
for details.
A module that provides a two-phase lock with a counter.
A module that provides a two-phase lock with a counter.
Emit a scalar with value
and tag
Emit a sequence with list
and tag
Emit a sequence with map
and tag
Emit an arbitrary object obj
and tag
Called with encoding
when the YAML stream starts. This method is called once per stream. A stream may contain multiple documents.
See the constants in Psych::Parser
for the possible values of encoding
.
Called when the document starts with the declared version
, tag_directives
, if the document is implicit
.
version
will be an array of integers indicating the YAML version being dealt with, tag_directives
is a list of tuples indicating the prefix and suffix of each tag, and implicit
is a boolean indicating whether the document is started implicitly.
Given the following YAML:
%YAML 1.1 %TAG ! tag:tenderlovemaking.com,2009: --- !squee
The parameters for start_document
must be this:
version # => [1, 1] tag_directives # => [["!", "tag:tenderlovemaking.com,2009:"]] implicit # => false
Called with the document ends. implicit
is a boolean value indicating whether or not the document has an implicit ending.
Given the following YAML:
--- hello world
implicit
will be true. Given this YAML:
--- hello world ...
implicit
will be false.
Called when a sequence is started.
anchor
is the anchor associated with the sequence or nil. tag
is the tag associated with the sequence or nil. implicit
a boolean indicating whether or not the sequence was implicitly started. style
is an integer indicating the list style.
See the constants in Psych::Nodes::Sequence
for the possible values of style
.
Here is a YAML document that exercises most of the possible ways this method can be called:
--- - !!seq [ a ] - &pewpew - b
The above YAML document consists of three lists, an outer list that contains two inner lists. Here is a matrix of the parameters sent to represent these lists:
# anchor tag implicit style [nil, nil, true, 1 ] [nil, "tag:yaml.org,2002:seq", false, 2 ] ["pewpew", nil, true, 1 ]
Called when a sequence ends.