yamlh.go

/*
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package candiedyaml

import (
	"fmt"
	"io"
)

/** The version directive data. */
type yaml_version_directive_t struct {
	major int // The major version number
	minor int // The minor version number
}

/** The tag directive data. */
type yaml_tag_directive_t struct {
	handle []byte // The tag handle
	prefix []byte // The tag prefix
}

/** The stream encoding. */
type yaml_encoding_t int

const (
	/** Let the parser choose the encoding. */
	yaml_ANY_ENCODING yaml_encoding_t = iota
	/** The defau lt UTF-8 encoding. */
	yaml_UTF8_ENCODING
	/** The UTF-16-LE encoding with BOM. */
	yaml_UTF16LE_ENCODING
	/** The UTF-16-BE encoding with BOM. */
	yaml_UTF16BE_ENCODING
)

/** Line break types. */
type yaml_break_t int

const (
	yaml_ANY_BREAK  yaml_break_t = iota /** Let the parser choose the break type. */
	yaml_CR_BREAK                       /** Use CR for line breaks (Mac style). */
	yaml_LN_BREAK                       /** Use LN for line breaks (Unix style). */
	yaml_CRLN_BREAK                     /** Use CR LN for line breaks (DOS style). */
)

/** Many bad things could happen with the parser and emitter. */
type YAML_error_type_t int

const (
	/** No error is produced. */
	yaml_NO_ERROR YAML_error_type_t = iota

	/** Cannot allocate or reallocate a block of memory. */
	yaml_MEMORY_ERROR

	/** Cannot read or decode the input stream. */
	yaml_READER_ERROR
	/** Cannot scan the input stream. */
	yaml_SCANNER_ERROR
	/** Cannot parse the input stream. */
	yaml_PARSER_ERROR
	/** Cannot compose a YAML document. */
	yaml_COMPOSER_ERROR

	/** Cannot write to the output stream. */
	yaml_WRITER_ERROR
	/** Cannot emit a YAML stream. */
	yaml_EMITTER_ERROR
)

/** The pointer position. */
type YAML_mark_t struct {
	/** The position index. */
	index int

	/** The position line. */
	line int

	/** The position column. */
	column int
}

func (m YAML_mark_t) String() string {
	return fmt.Sprintf("line %d, column %d", m.line, m.column)
}

/** @} */

/**
 * @defgroup styles Node Styles
 * @{
 */

type yaml_style_t int

/** Scalar styles. */
type yaml_scalar_style_t yaml_style_t

const (
	/** Let the emitter choose the style. */
	yaml_ANY_SCALAR_STYLE yaml_scalar_style_t = iota

	/** The plain scalar style. */
	yaml_PLAIN_SCALAR_STYLE

	/** The single-quoted scalar style. */
	yaml_SINGLE_QUOTED_SCALAR_STYLE
	/** The double-quoted scalar style. */
	yaml_DOUBLE_QUOTED_SCALAR_STYLE

	/** The literal scalar style. */
	yaml_LITERAL_SCALAR_STYLE
	/** The folded scalar style. */
	yaml_FOLDED_SCALAR_STYLE
)

/** Sequence styles. */
type yaml_sequence_style_t yaml_style_t

const (
	/** Let the emitter choose the style. */
	yaml_ANY_SEQUENCE_STYLE yaml_sequence_style_t = iota

	/** The block sequence style. */
	yaml_BLOCK_SEQUENCE_STYLE
	/** The flow sequence style. */
	yaml_FLOW_SEQUENCE_STYLE
)

/** Mapping styles. */
type yaml_mapping_style_t yaml_style_t

const (
	/** Let the emitter choose the style. */
	yaml_ANY_MAPPING_STYLE yaml_mapping_style_t = iota

	/** The block mapping style. */
	yaml_BLOCK_MAPPING_STYLE
	/** The flow mapping style. */
	yaml_FLOW_MAPPING_STYLE

/*    yaml_FLOW_SET_MAPPING_STYLE   */
)

/** @} */

/**
 * @defgroup tokens Tokens
 * @{
 */

/** Token types. */
type yaml_token_type_t int

const (
	/** An empty token. */
	yaml_NO_TOKEN yaml_token_type_t = iota

	/** A STREAM-START token. */
	yaml_STREAM_START_TOKEN
	/** A STREAM-END token. */
	yaml_STREAM_END_TOKEN

	/** A VERSION-DIRECTIVE token. */
	yaml_VERSION_DIRECTIVE_TOKEN
	/** A TAG-DIRECTIVE token. */
	yaml_TAG_DIRECTIVE_TOKEN
	/** A DOCUMENT-START token. */
	yaml_DOCUMENT_START_TOKEN
	/** A DOCUMENT-END token. */
	yaml_DOCUMENT_END_TOKEN

	/** A BLOCK-SEQUENCE-START token. */
	yaml_BLOCK_SEQUENCE_START_TOKEN
	/** A BLOCK-SEQUENCE-END token. */
	yaml_BLOCK_MAPPING_START_TOKEN
	/** A BLOCK-END token. */
	yaml_BLOCK_END_TOKEN

	/** A FLOW-SEQUENCE-START token. */
	yaml_FLOW_SEQUENCE_START_TOKEN
	/** A FLOW-SEQUENCE-END token. */
	yaml_FLOW_SEQUENCE_END_TOKEN
	/** A FLOW-MAPPING-START token. */
	yaml_FLOW_MAPPING_START_TOKEN
	/** A FLOW-MAPPING-END token. */
	yaml_FLOW_MAPPING_END_TOKEN

	/** A BLOCK-ENTRY token. */
	yaml_BLOCK_ENTRY_TOKEN
	/** A FLOW-ENTRY token. */
	yaml_FLOW_ENTRY_TOKEN
	/** A KEY token. */
	yaml_KEY_TOKEN
	/** A VALUE token. */
	yaml_VALUE_TOKEN

	/** An ALIAS token. */
	yaml_ALIAS_TOKEN
	/** An ANCHOR token. */
	yaml_ANCHOR_TOKEN
	/** A TAG token. */
	yaml_TAG_TOKEN
	/** A SCALAR token. */
	yaml_SCALAR_TOKEN
)

/** The token structure. */
type yaml_token_t struct {

	/** The token type. */
	token_type yaml_token_type_t

	/** The token data. */
	/** The stream start (for @c yaml_STREAM_START_TOKEN). */
	encoding yaml_encoding_t

	/** The alias (for @c yaml_ALIAS_TOKEN, yaml_ANCHOR_TOKEN, yaml_SCALAR_TOKEN,yaml_TAG_TOKEN ). */
	/** The anchor (for @c ). */
	/** The scalar value (for @c ). */
	value []byte

	/** The tag suffix. */
	suffix []byte

	/** The scalar value (for @c yaml_SCALAR_TOKEN). */
	/** The scalar style. */
	style yaml_scalar_style_t

	/** The version directive (for @c yaml_VERSION_DIRECTIVE_TOKEN). */
	version_directive yaml_version_directive_t

	/** The tag directive (for @c yaml_TAG_DIRECTIVE_TOKEN). */
	prefix []byte

	/** The beginning of the token. */
	start_mark YAML_mark_t
	/** The end of the token. */
	end_mark YAML_mark_t

	major, minor int
}

/**
 * @defgroup events Events
 * @{
 */

/** Event types. */
type yaml_event_type_t int

const (
	/** An empty event. */
	yaml_NO_EVENT yaml_event_type_t = iota

	/** A STREAM-START event. */
	yaml_STREAM_START_EVENT
	/** A STREAM-END event. */
	yaml_STREAM_END_EVENT

	/** A DOCUMENT-START event. */
	yaml_DOCUMENT_START_EVENT
	/** A DOCUMENT-END event. */
	yaml_DOCUMENT_END_EVENT

	/** An ALIAS event. */
	yaml_ALIAS_EVENT
	/** A SCALAR event. */
	yaml_SCALAR_EVENT

	/** A SEQUENCE-START event. */
	yaml_SEQUENCE_START_EVENT
	/** A SEQUENCE-END event. */
	yaml_SEQUENCE_END_EVENT

	/** A MAPPING-START event. */
	yaml_MAPPING_START_EVENT
	/** A MAPPING-END event. */
	yaml_MAPPING_END_EVENT
)

/** The event structure. */
type yaml_event_t struct {

	/** The event type. */
	event_type yaml_event_type_t

	/** The stream parameters (for @c yaml_STREAM_START_EVENT). */
	encoding yaml_encoding_t

	/** The document parameters (for @c yaml_DOCUMENT_START_EVENT). */
	version_directive *yaml_version_directive_t

	/** The beginning and end of the tag directives list. */
	tag_directives []yaml_tag_directive_t

	/** The document parameters (for @c yaml_DOCUMENT_START_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_START_EVENT,yaml_MAPPING_START_EVENT). */
	/** Is the document indicator implicit? */
	implicit bool

	/** The alias parameters (for @c yaml_ALIAS_EVENT,yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT). */
	/** The anchor. */
	anchor []byte

	/** The scalar parameters (for @c yaml_SCALAR_EVENT,yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT). */
	/** The tag. */
	tag []byte
	/** The scalar value. */
	value []byte

	/** Is the tag optional for the plain style? */
	plain_implicit bool
	/** Is the tag optional for any non-plain style? */
	quoted_implicit bool

	/** The sequence parameters (for @c yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT). */
	/** The sequence style. */
	/** The scalar style. */
	style yaml_style_t

	/** The beginning of the event. */
	start_mark, end_mark YAML_mark_t
}

/**
 * @defgroup nodes Nodes
 * @{
 */

const (
	/** The tag @c !!null with the only possible value: @c null. */
	yaml_NULL_TAG = "tag:yaml.org,2002:null"
	/** The tag @c !!bool with the values: @c true and @c falce. */
	yaml_BOOL_TAG = "tag:yaml.org,2002:bool"
	/** The tag @c !!str for string values. */
	yaml_STR_TAG = "tag:yaml.org,2002:str"
	/** The tag @c !!int for integer values. */
	yaml_INT_TAG = "tag:yaml.org,2002:int"
	/** The tag @c !!float for float values. */
	yaml_FLOAT_TAG = "tag:yaml.org,2002:float"
	/** The tag @c !!timestamp for date and time values. */
	yaml_TIMESTAMP_TAG = "tag:yaml.org,2002:timestamp"

	/** The tag @c !!seq is used to denote sequences. */
	yaml_SEQ_TAG = "tag:yaml.org,2002:seq"
	/** The tag @c !!map is used to denote mapping. */
	yaml_MAP_TAG = "tag:yaml.org,2002:map"

	/** The default scalar tag is @c !!str. */
	yaml_DEFAULT_SCALAR_TAG = yaml_STR_TAG
	/** The default sequence tag is @c !!seq. */
	yaml_DEFAULT_SEQUENCE_TAG = yaml_SEQ_TAG
	/** The default mapping tag is @c !!map. */
	yaml_DEFAULT_MAPPING_TAG = yaml_MAP_TAG

	yaml_BINARY_TAG = "tag:yaml.org,2002:binary"
)

/** Node types. */
type yaml_node_type_t int

const (
	/** An empty node. */
	yaml_NO_NODE yaml_node_type_t = iota

	/** A scalar node. */
	yaml_SCALAR_NODE
	/** A sequence node. */
	yaml_SEQUENCE_NODE
	/** A mapping node. */
	yaml_MAPPING_NODE
)

/** An element of a sequence node. */
type yaml_node_item_t int

/** An element of a mapping node. */
type yaml_node_pair_t struct {
	/** The key of the element. */
	key int
	/** The value of the element. */
	value int
}

/** The node structure. */
type yaml_node_t struct {

	/** The node type. */
	node_type yaml_node_type_t

	/** The node tag. */
	tag []byte

	/** The scalar parameters (for @c yaml_SCALAR_NODE). */
	scalar struct {
		/** The scalar value. */
		value []byte
		/** The scalar style. */
		style yaml_scalar_style_t
	}

	/** The sequence parameters (for @c yaml_SEQUENCE_NODE). */
	sequence struct {
		/** The stack of sequence items. */
		items []yaml_node_item_t
		/** The sequence style. */
		style yaml_sequence_style_t
	}

	/** The mapping parameters (for @c yaml_MAPPING_NODE). */
	mapping struct {
		/** The stack of mapping pairs (key, value). */
		pairs []yaml_node_pair_t
		/** The mapping style. */
		style yaml_mapping_style_t
	}

	/** The beginning of the node. */
	start_mark YAML_mark_t
	/** The end of the node. */
	end_mark YAML_mark_t
}

/** The document structure. */
type yaml_document_t struct {

	/** The document nodes. */
	nodes []yaml_node_t

	/** The version directive. */
	version_directive *yaml_version_directive_t

	/** The list of tag directives. */
	tags []yaml_tag_directive_t

	/** Is the document start indicator implicit? */
	start_implicit bool
	/** Is the document end indicator implicit? */
	end_implicit bool

	/** The beginning of the document. */
	start_mark YAML_mark_t
	/** The end of the document. */
	end_mark YAML_mark_t
}

/**
 * The prototype of a read handler.
 *
 * The read handler is called when the parser needs to read more bytes from the
 * source.  The handler should write not more than @a size bytes to the @a
 * buffer.  The number of written bytes should be set to the @a length variable.
 *
 * @param[in,out]   data        A pointer to an application data specified by
 *                              yaml_parser_set_input().
 * @param[out]      buffer      The buffer to write the data from the source.
 * @param[in]       size        The size of the buffer.
 * @param[out]      size_read   The actual number of bytes read from the source.
 *
 * @returns On success, the handler should return @c 1.  If the handler failed,
 * the returned value should be @c 0.  On EOF, the handler should set the
 * @a size_read to @c 0 and return @c 1.
 */

type yaml_read_handler_t func(parser *yaml_parser_t, buffer []byte) (n int, err error)

/**
 * This structure holds information about a potential simple key.
 */

type yaml_simple_key_t struct {
	/** Is a simple key possible? */
	possible bool

	/** Is a simple key required? */
	required bool

	/** The number of the token. */
	token_number int

	/** The position mark. */
	mark YAML_mark_t
}

/**
 * The states of the parser.
 */
type yaml_parser_state_t int

const (
	/** Expect STREAM-START. */
	yaml_PARSE_STREAM_START_STATE yaml_parser_state_t = iota
	/** Expect the beginning of an implicit document. */
	yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE
	/** Expect DOCUMENT-START. */
	yaml_PARSE_DOCUMENT_START_STATE
	/** Expect the content of a document. */
	yaml_PARSE_DOCUMENT_CONTENT_STATE
	/** Expect DOCUMENT-END. */
	yaml_PARSE_DOCUMENT_END_STATE
	/** Expect a block node. */
	yaml_PARSE_BLOCK_NODE_STATE
	/** Expect a block node or indentless sequence. */
	yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE
	/** Expect a flow node. */
	yaml_PARSE_FLOW_NODE_STATE
	/** Expect the first entry of a block sequence. */
	yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE
	/** Expect an entry of a block sequence. */
	yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE
	/** Expect an entry of an indentless sequence. */
	yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE
	/** Expect the first key of a block mapping. */
	yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE
	/** Expect a block mapping key. */
	yaml_PARSE_BLOCK_MAPPING_KEY_STATE
	/** Expect a block mapping value. */
	yaml_PARSE_BLOCK_MAPPING_VALUE_STATE
	/** Expect the first entry of a flow sequence. */
	yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE
	/** Expect an entry of a flow sequence. */
	yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE
	/** Expect a key of an ordered mapping. */
	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE
	/** Expect a value of an ordered mapping. */
	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE
	/** Expect the and of an ordered mapping entry. */
	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE
	/** Expect the first key of a flow mapping. */
	yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE
	/** Expect a key of a flow mapping. */
	yaml_PARSE_FLOW_MAPPING_KEY_STATE
	/** Expect a value of a flow mapping. */
	yaml_PARSE_FLOW_MAPPING_VALUE_STATE
	/** Expect an empty value of a flow mapping. */
	yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE
	/** Expect nothing. */
	yaml_PARSE_END_STATE
)

/**
 * This structure holds aliases data.
 */

type yaml_alias_data_t struct {
	/** The anchor. */
	anchor []byte
	/** The node id. */
	index int
	/** The anchor mark. */
	mark YAML_mark_t
}

/**
 * The parser structure.
 *
 * All members are internal.  Manage the structure using the @c yaml_parser_
 * family of functions.
 */

type yaml_parser_t struct {

	/**
	 * @name Error handling
	 * @{
	 */

	/** Error type. */
	error YAML_error_type_t
	/** Error description. */
	problem string
	/** The byte about which the problem occured. */
	problem_offset int
	/** The problematic value (@c -1 is none). */
	problem_value int
	/** The problem position. */
	problem_mark YAML_mark_t
	/** The error context. */
	context string
	/** The context position. */
	context_mark YAML_mark_t

	/**
	 * @}
	 */

	/**
	 * @name Reader stuff
	 * @{
	 */

	/** Read handler. */
	read_handler yaml_read_handler_t

	/** Reader input data. */
	input_reader io.Reader
	input        []byte
	input_pos    int

	/** EOF flag */
	eof bool

	/** The working buffer. */
	buffer     []byte
	buffer_pos int

	/* The number of unread characters in the buffer. */
	unread int

	/** The raw buffer. */
	raw_buffer     []byte
	raw_buffer_pos int

	/** The input encoding. */
	encoding yaml_encoding_t

	/** The offset of the current position (in bytes). */
	offset int

	/** The mark of the current position. */
	mark YAML_mark_t

	/**
	 * @}
	 */

	/**
	 * @name Scanner stuff
	 * @{
	 */

	/** Have we started to scan the input stream? */
	stream_start_produced bool

	/** Have we reached the end of the input stream? */
	stream_end_produced bool

	/** The number of unclosed '[' and '{' indicators. */
	flow_level int

	/** The tokens queue. */
	tokens      []yaml_token_t
	tokens_head int

	/** The number of tokens fetched from the queue. */
	tokens_parsed int

	/* Does the tokens queue contain a token ready for dequeueing. */
	token_available bool

	/** The indentation levels stack. */
	indents []int

	/** The current indentation level. */
	indent int

	/** May a simple key occur at the current position? */
	simple_key_allowed bool

	/** The stack of simple keys. */
	simple_keys []yaml_simple_key_t

	/**
	 * @}
	 */

	/**
	 * @name Parser stuff
	 * @{
	 */

	/** The parser states stack. */
	states []yaml_parser_state_t

	/** The current parser state. */
	state yaml_parser_state_t

	/** The stack of marks. */
	marks []YAML_mark_t

	/** The list of TAG directives. */
	tag_directives []yaml_tag_directive_t

	/**
	 * @}
	 */

	/**
	 * @name Dumper stuff
	 * @{
	 */

	/** The alias data. */
	aliases []yaml_alias_data_t

	/** The currently parsed document. */
	document *yaml_document_t

	/**
	 * @}
	 */

}

/**
 * The prototype of a write handler.
 *
 * The write handler is called when the emitter needs to flush the accumulated
 * characters to the output.  The handler should write @a size bytes of the
 * @a buffer to the output.
 *
 * @param[in,out]   data        A pointer to an application data specified by
 *                              yaml_emitter_set_output().
 * @param[in]       buffer      The buffer with bytes to be written.
 * @param[in]       size        The size of the buffer.
 *
 * @returns On success, the handler should return @c 1.  If the handler failed,
 * the returned value should be @c 0.
 */

type yaml_write_handler_t func(emitter *yaml_emitter_t, buffer []byte) error

/** The emitter states. */
type yaml_emitter_state_t int

const (
	/** Expect STREAM-START. */
	yaml_EMIT_STREAM_START_STATE yaml_emitter_state_t = iota
	/** Expect the first DOCUMENT-START or STREAM-END. */
	yaml_EMIT_FIRST_DOCUMENT_START_STATE
	/** Expect DOCUMENT-START or STREAM-END. */
	yaml_EMIT_DOCUMENT_START_STATE
	/** Expect the content of a document. */
	yaml_EMIT_DOCUMENT_CONTENT_STATE
	/** Expect DOCUMENT-END. */
	yaml_EMIT_DOCUMENT_END_STATE
	/** Expect the first item of a flow sequence. */
	yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE
	/** Expect an item of a flow sequence. */
	yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE
	/** Expect the first key of a flow mapping. */
	yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE
	/** Expect a key of a flow mapping. */
	yaml_EMIT_FLOW_MAPPING_KEY_STATE
	/** Expect a value for a simple key of a flow mapping. */
	yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE
	/** Expect a value of a flow mapping. */
	yaml_EMIT_FLOW_MAPPING_VALUE_STATE
	/** Expect the first item of a block sequence. */
	yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE
	/** Expect an item of a block sequence. */
	yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE
	/** Expect the first key of a block mapping. */
	yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE
	/** Expect the key of a block mapping. */
	yaml_EMIT_BLOCK_MAPPING_KEY_STATE
	/** Expect a value for a simple key of a block mapping. */
	yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE
	/** Expect a value of a block mapping. */
	yaml_EMIT_BLOCK_MAPPING_VALUE_STATE
	/** Expect nothing. */
	yaml_EMIT_END_STATE
)

/**
 * The emitter structure.
 *
 * All members are internal.  Manage the structure using the @c yaml_emitter_
 * family of functions.
 */

type yaml_emitter_t struct {

	/**
	 * @name Error handling
	 * @{
	 */

	/** Error type. */
	error YAML_error_type_t
	/** Error description. */
	problem string

	/**
	 * @}
	 */

	/**
	 * @name Writer stuff
	 * @{
	 */

	/** Write handler. */
	write_handler yaml_write_handler_t

	/** Standard (string or file) output data. */
	output_buffer *[]byte
	output_writer io.Writer

	/** The working buffer. */
	buffer     []byte
	buffer_pos int

	/** The raw buffer. */
	raw_buffer     []byte
	raw_buffer_pos int

	/** The stream encoding. */
	encoding yaml_encoding_t

	/**
	 * @}
	 */

	/**
	 * @name Emitter stuff
	 * @{
	 */

	/** If the output is in the canonical style? */
	canonical bool
	/** The number of indentation spaces. */
	best_indent int
	/** The preferred width of the output lines. */
	best_width int
	/** Allow unescaped non-ASCII characters? */
	unicode bool
	/** The preferred line break. */
	line_break yaml_break_t

	/** The stack of states. */
	states []yaml_emitter_state_t

	/** The current emitter state. */
	state yaml_emitter_state_t

	/** The event queue. */
	events      []yaml_event_t
	events_head int

	/** The stack of indentation levels. */
	indents []int

	/** The list of tag directives. */
	tag_directives []yaml_tag_directive_t

	/** The current indentation level. */
	indent int

	/** The current flow level. */
	flow_level int

	/** Is it the document root context? */
	root_context bool
	/** Is it a sequence context? */
	sequence_context bool
	/** Is it a mapping context? */
	mapping_context bool
	/** Is it a simple mapping key context? */
	simple_key_context bool

	/** The current line. */
	line int
	/** The current column. */
	column int
	/** If the last character was a whitespace? */
	whitespace bool
	/** If the last character was an indentation character (' ', '-', '?', ':')? */
	indention bool
	/** If an explicit document end is required? */
	open_ended bool

	/** Anchor analysis. */
	anchor_data struct {
		/** The anchor value. */
		anchor []byte
		/** Is it an alias? */
		alias bool
	}

	/** Tag analysis. */
	tag_data struct {
		/** The tag handle. */
		handle []byte
		/** The tag suffix. */
		suffix []byte
	}

	/** Scalar analysis. */
	scalar_data struct {
		/** The scalar value. */
		value []byte
		/** Does the scalar contain line breaks? */
		multiline bool
		/** Can the scalar be expessed in the flow plain style? */
		flow_plain_allowed bool
		/** Can the scalar be expressed in the block plain style? */
		block_plain_allowed bool
		/** Can the scalar be expressed in the single quoted style? */
		single_quoted_allowed bool
		/** Can the scalar be expressed in the literal or folded styles? */
		block_allowed bool
		/** The output style. */
		style yaml_scalar_style_t
	}

	/**
	 * @}
	 */

	/**
	 * @name Dumper stuff
	 * @{
	 */

	/** If the stream was already opened? */
	opened bool
	/** If the stream was already closed? */
	closed bool

	/** The information associated with the document nodes. */
	anchors *struct {
		/** The number of references. */
		references int
		/** The anchor id. */
		anchor int
		/** If the node has been emitted? */
		serialized bool
	}

	/** The last assigned anchor id. */
	last_anchor_id int

	/** The currently emitted document. */
	document *yaml_document_t

	/**
	 * @}
	 */

}