740 lines
26 KiB
Go
740 lines
26 KiB
Go
package yaml
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import (
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"fmt"
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"io"
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)
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// The version directive data.
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type yaml_version_directive_t struct {
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major int8 // The major version number.
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minor int8 // The minor version number.
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}
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// The tag directive data.
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type yaml_tag_directive_t struct {
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handle []byte // The tag handle.
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prefix []byte // The tag prefix.
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}
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type yaml_encoding_t int
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// The stream encoding.
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const (
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// Let the parser choose the encoding.
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yaml_ANY_ENCODING yaml_encoding_t = iota
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yaml_UTF8_ENCODING // The default UTF-8 encoding.
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yaml_UTF16LE_ENCODING // The UTF-16-LE encoding with BOM.
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yaml_UTF16BE_ENCODING // The UTF-16-BE encoding with BOM.
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)
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type yaml_break_t int
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// Line break types.
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const (
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// Let the parser choose the break type.
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yaml_ANY_BREAK yaml_break_t = iota
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yaml_CR_BREAK // Use CR for line breaks (Mac style).
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yaml_LN_BREAK // Use LN for line breaks (Unix style).
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yaml_CRLN_BREAK // Use CR LN for line breaks (DOS style).
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)
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type yaml_error_type_t int
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// Many bad things could happen with the parser and emitter.
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const (
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// No error is produced.
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yaml_NO_ERROR yaml_error_type_t = iota
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yaml_MEMORY_ERROR // Cannot allocate or reallocate a block of memory.
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yaml_READER_ERROR // Cannot read or decode the input stream.
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yaml_SCANNER_ERROR // Cannot scan the input stream.
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yaml_PARSER_ERROR // Cannot parse the input stream.
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yaml_COMPOSER_ERROR // Cannot compose a YAML document.
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yaml_WRITER_ERROR // Cannot write to the output stream.
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yaml_EMITTER_ERROR // Cannot emit a YAML stream.
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)
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// The pointer position.
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type yaml_mark_t struct {
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index int // The position index.
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line int // The position line.
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column int // The position column.
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}
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// Node Styles
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type yaml_style_t int8
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type yaml_scalar_style_t yaml_style_t
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// Scalar styles.
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const (
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// Let the emitter choose the style.
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yaml_ANY_SCALAR_STYLE yaml_scalar_style_t = iota
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yaml_PLAIN_SCALAR_STYLE // The plain scalar style.
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yaml_SINGLE_QUOTED_SCALAR_STYLE // The single-quoted scalar style.
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yaml_DOUBLE_QUOTED_SCALAR_STYLE // The double-quoted scalar style.
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yaml_LITERAL_SCALAR_STYLE // The literal scalar style.
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yaml_FOLDED_SCALAR_STYLE // The folded scalar style.
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)
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type yaml_sequence_style_t yaml_style_t
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// Sequence styles.
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const (
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// Let the emitter choose the style.
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yaml_ANY_SEQUENCE_STYLE yaml_sequence_style_t = iota
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yaml_BLOCK_SEQUENCE_STYLE // The block sequence style.
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yaml_FLOW_SEQUENCE_STYLE // The flow sequence style.
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)
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type yaml_mapping_style_t yaml_style_t
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// Mapping styles.
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const (
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// Let the emitter choose the style.
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yaml_ANY_MAPPING_STYLE yaml_mapping_style_t = iota
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yaml_BLOCK_MAPPING_STYLE // The block mapping style.
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yaml_FLOW_MAPPING_STYLE // The flow mapping style.
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)
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// Tokens
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type yaml_token_type_t int
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// Token types.
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const (
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// An empty token.
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yaml_NO_TOKEN yaml_token_type_t = iota
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yaml_STREAM_START_TOKEN // A STREAM-START token.
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yaml_STREAM_END_TOKEN // A STREAM-END token.
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yaml_VERSION_DIRECTIVE_TOKEN // A VERSION-DIRECTIVE token.
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yaml_TAG_DIRECTIVE_TOKEN // A TAG-DIRECTIVE token.
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yaml_DOCUMENT_START_TOKEN // A DOCUMENT-START token.
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yaml_DOCUMENT_END_TOKEN // A DOCUMENT-END token.
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yaml_BLOCK_SEQUENCE_START_TOKEN // A BLOCK-SEQUENCE-START token.
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yaml_BLOCK_MAPPING_START_TOKEN // A BLOCK-SEQUENCE-END token.
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yaml_BLOCK_END_TOKEN // A BLOCK-END token.
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yaml_FLOW_SEQUENCE_START_TOKEN // A FLOW-SEQUENCE-START token.
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yaml_FLOW_SEQUENCE_END_TOKEN // A FLOW-SEQUENCE-END token.
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yaml_FLOW_MAPPING_START_TOKEN // A FLOW-MAPPING-START token.
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yaml_FLOW_MAPPING_END_TOKEN // A FLOW-MAPPING-END token.
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yaml_BLOCK_ENTRY_TOKEN // A BLOCK-ENTRY token.
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yaml_FLOW_ENTRY_TOKEN // A FLOW-ENTRY token.
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yaml_KEY_TOKEN // A KEY token.
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yaml_VALUE_TOKEN // A VALUE token.
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yaml_ALIAS_TOKEN // An ALIAS token.
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yaml_ANCHOR_TOKEN // An ANCHOR token.
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yaml_TAG_TOKEN // A TAG token.
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yaml_SCALAR_TOKEN // A SCALAR token.
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)
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func (tt yaml_token_type_t) String() string {
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switch tt {
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case yaml_NO_TOKEN:
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return "yaml_NO_TOKEN"
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case yaml_STREAM_START_TOKEN:
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return "yaml_STREAM_START_TOKEN"
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case yaml_STREAM_END_TOKEN:
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return "yaml_STREAM_END_TOKEN"
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case yaml_VERSION_DIRECTIVE_TOKEN:
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return "yaml_VERSION_DIRECTIVE_TOKEN"
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case yaml_TAG_DIRECTIVE_TOKEN:
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return "yaml_TAG_DIRECTIVE_TOKEN"
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case yaml_DOCUMENT_START_TOKEN:
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return "yaml_DOCUMENT_START_TOKEN"
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case yaml_DOCUMENT_END_TOKEN:
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return "yaml_DOCUMENT_END_TOKEN"
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case yaml_BLOCK_SEQUENCE_START_TOKEN:
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return "yaml_BLOCK_SEQUENCE_START_TOKEN"
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case yaml_BLOCK_MAPPING_START_TOKEN:
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return "yaml_BLOCK_MAPPING_START_TOKEN"
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case yaml_BLOCK_END_TOKEN:
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return "yaml_BLOCK_END_TOKEN"
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case yaml_FLOW_SEQUENCE_START_TOKEN:
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return "yaml_FLOW_SEQUENCE_START_TOKEN"
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case yaml_FLOW_SEQUENCE_END_TOKEN:
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return "yaml_FLOW_SEQUENCE_END_TOKEN"
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case yaml_FLOW_MAPPING_START_TOKEN:
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return "yaml_FLOW_MAPPING_START_TOKEN"
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case yaml_FLOW_MAPPING_END_TOKEN:
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return "yaml_FLOW_MAPPING_END_TOKEN"
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case yaml_BLOCK_ENTRY_TOKEN:
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return "yaml_BLOCK_ENTRY_TOKEN"
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case yaml_FLOW_ENTRY_TOKEN:
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return "yaml_FLOW_ENTRY_TOKEN"
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case yaml_KEY_TOKEN:
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return "yaml_KEY_TOKEN"
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case yaml_VALUE_TOKEN:
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return "yaml_VALUE_TOKEN"
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case yaml_ALIAS_TOKEN:
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return "yaml_ALIAS_TOKEN"
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case yaml_ANCHOR_TOKEN:
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return "yaml_ANCHOR_TOKEN"
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case yaml_TAG_TOKEN:
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return "yaml_TAG_TOKEN"
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case yaml_SCALAR_TOKEN:
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return "yaml_SCALAR_TOKEN"
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}
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return "<unknown token>"
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}
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// The token structure.
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type yaml_token_t struct {
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// The token type.
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typ yaml_token_type_t
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// The start/end of the token.
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start_mark, end_mark yaml_mark_t
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// The stream encoding (for yaml_STREAM_START_TOKEN).
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encoding yaml_encoding_t
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// The alias/anchor/scalar value or tag/tag directive handle
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// (for yaml_ALIAS_TOKEN, yaml_ANCHOR_TOKEN, yaml_SCALAR_TOKEN, yaml_TAG_TOKEN, yaml_TAG_DIRECTIVE_TOKEN).
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value []byte
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// The tag suffix (for yaml_TAG_TOKEN).
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suffix []byte
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// The tag directive prefix (for yaml_TAG_DIRECTIVE_TOKEN).
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prefix []byte
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// The scalar style (for yaml_SCALAR_TOKEN).
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style yaml_scalar_style_t
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// The version directive major/minor (for yaml_VERSION_DIRECTIVE_TOKEN).
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major, minor int8
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}
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// Events
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type yaml_event_type_t int8
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// Event types.
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const (
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// An empty event.
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yaml_NO_EVENT yaml_event_type_t = iota
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yaml_STREAM_START_EVENT // A STREAM-START event.
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yaml_STREAM_END_EVENT // A STREAM-END event.
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yaml_DOCUMENT_START_EVENT // A DOCUMENT-START event.
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yaml_DOCUMENT_END_EVENT // A DOCUMENT-END event.
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yaml_ALIAS_EVENT // An ALIAS event.
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yaml_SCALAR_EVENT // A SCALAR event.
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yaml_SEQUENCE_START_EVENT // A SEQUENCE-START event.
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yaml_SEQUENCE_END_EVENT // A SEQUENCE-END event.
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yaml_MAPPING_START_EVENT // A MAPPING-START event.
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yaml_MAPPING_END_EVENT // A MAPPING-END event.
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)
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var eventStrings = []string{
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yaml_NO_EVENT: "none",
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yaml_STREAM_START_EVENT: "stream start",
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yaml_STREAM_END_EVENT: "stream end",
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yaml_DOCUMENT_START_EVENT: "document start",
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yaml_DOCUMENT_END_EVENT: "document end",
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yaml_ALIAS_EVENT: "alias",
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yaml_SCALAR_EVENT: "scalar",
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yaml_SEQUENCE_START_EVENT: "sequence start",
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yaml_SEQUENCE_END_EVENT: "sequence end",
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yaml_MAPPING_START_EVENT: "mapping start",
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yaml_MAPPING_END_EVENT: "mapping end",
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}
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func (e yaml_event_type_t) String() string {
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if e < 0 || int(e) >= len(eventStrings) {
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return fmt.Sprintf("unknown event %d", e)
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}
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return eventStrings[e]
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}
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// The event structure.
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type yaml_event_t struct {
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// The event type.
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typ yaml_event_type_t
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// The start and end of the event.
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start_mark, end_mark yaml_mark_t
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// The document encoding (for yaml_STREAM_START_EVENT).
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encoding yaml_encoding_t
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// The version directive (for yaml_DOCUMENT_START_EVENT).
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version_directive *yaml_version_directive_t
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// The list of tag directives (for yaml_DOCUMENT_START_EVENT).
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tag_directives []yaml_tag_directive_t
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// The anchor (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_ALIAS_EVENT).
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anchor []byte
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// The tag (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
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tag []byte
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// The scalar value (for yaml_SCALAR_EVENT).
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value []byte
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// Is the document start/end indicator implicit, or the tag optional?
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// (for yaml_DOCUMENT_START_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_SCALAR_EVENT).
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implicit bool
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// Is the tag optional for any non-plain style? (for yaml_SCALAR_EVENT).
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quoted_implicit bool
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// The style (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
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style yaml_style_t
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}
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func (e *yaml_event_t) scalar_style() yaml_scalar_style_t { return yaml_scalar_style_t(e.style) }
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func (e *yaml_event_t) sequence_style() yaml_sequence_style_t { return yaml_sequence_style_t(e.style) }
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func (e *yaml_event_t) mapping_style() yaml_mapping_style_t { return yaml_mapping_style_t(e.style) }
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// Nodes
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const (
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yaml_NULL_TAG = "tag:yaml.org,2002:null" // The tag !!null with the only possible value: null.
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yaml_BOOL_TAG = "tag:yaml.org,2002:bool" // The tag !!bool with the values: true and false.
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yaml_STR_TAG = "tag:yaml.org,2002:str" // The tag !!str for string values.
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yaml_INT_TAG = "tag:yaml.org,2002:int" // The tag !!int for integer values.
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yaml_FLOAT_TAG = "tag:yaml.org,2002:float" // The tag !!float for float values.
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yaml_TIMESTAMP_TAG = "tag:yaml.org,2002:timestamp" // The tag !!timestamp for date and time values.
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yaml_SEQ_TAG = "tag:yaml.org,2002:seq" // The tag !!seq is used to denote sequences.
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yaml_MAP_TAG = "tag:yaml.org,2002:map" // The tag !!map is used to denote mapping.
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// Not in original libyaml.
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yaml_BINARY_TAG = "tag:yaml.org,2002:binary"
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yaml_MERGE_TAG = "tag:yaml.org,2002:merge"
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yaml_DEFAULT_SCALAR_TAG = yaml_STR_TAG // The default scalar tag is !!str.
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yaml_DEFAULT_SEQUENCE_TAG = yaml_SEQ_TAG // The default sequence tag is !!seq.
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yaml_DEFAULT_MAPPING_TAG = yaml_MAP_TAG // The default mapping tag is !!map.
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)
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type yaml_node_type_t int
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// Node types.
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const (
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// An empty node.
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yaml_NO_NODE yaml_node_type_t = iota
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yaml_SCALAR_NODE // A scalar node.
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yaml_SEQUENCE_NODE // A sequence node.
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yaml_MAPPING_NODE // A mapping node.
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)
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// An element of a sequence node.
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type yaml_node_item_t int
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// An element of a mapping node.
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type yaml_node_pair_t struct {
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key int // The key of the element.
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value int // The value of the element.
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}
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// The node structure.
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type yaml_node_t struct {
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typ yaml_node_type_t // The node type.
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tag []byte // The node tag.
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// The node data.
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// The scalar parameters (for yaml_SCALAR_NODE).
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scalar struct {
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value []byte // The scalar value.
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length int // The length of the scalar value.
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style yaml_scalar_style_t // The scalar style.
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}
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// The sequence parameters (for YAML_SEQUENCE_NODE).
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sequence struct {
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items_data []yaml_node_item_t // The stack of sequence items.
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style yaml_sequence_style_t // The sequence style.
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}
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// The mapping parameters (for yaml_MAPPING_NODE).
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mapping struct {
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pairs_data []yaml_node_pair_t // The stack of mapping pairs (key, value).
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pairs_start *yaml_node_pair_t // The beginning of the stack.
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pairs_end *yaml_node_pair_t // The end of the stack.
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pairs_top *yaml_node_pair_t // The top of the stack.
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style yaml_mapping_style_t // The mapping style.
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}
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start_mark yaml_mark_t // The beginning of the node.
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end_mark yaml_mark_t // The end of the node.
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}
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// The document structure.
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type yaml_document_t struct {
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// The document nodes.
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nodes []yaml_node_t
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// The version directive.
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version_directive *yaml_version_directive_t
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// The list of tag directives.
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tag_directives_data []yaml_tag_directive_t
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tag_directives_start int // The beginning of the tag directives list.
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tag_directives_end int // The end of the tag directives list.
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start_implicit int // Is the document start indicator implicit?
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end_implicit int // Is the document end indicator implicit?
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// The start/end of the document.
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start_mark, end_mark yaml_mark_t
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}
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// The prototype of a read handler.
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//
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// The read handler is called when the parser needs to read more bytes from the
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// source. The handler should write not more than size bytes to the buffer.
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// The number of written bytes should be set to the size_read variable.
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//
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// [in,out] data A pointer to an application data specified by
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// yaml_parser_set_input().
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// [out] buffer The buffer to write the data from the source.
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// [in] size The size of the buffer.
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// [out] size_read The actual number of bytes read from the source.
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//
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// On success, the handler should return 1. If the handler failed,
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// the returned value should be 0. On EOF, the handler should set the
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// size_read to 0 and return 1.
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type yaml_read_handler_t func(parser *yaml_parser_t, buffer []byte) (n int, err error)
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// This structure holds information about a potential simple key.
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type yaml_simple_key_t struct {
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possible bool // Is a simple key possible?
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required bool // Is a simple key required?
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token_number int // The number of the token.
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mark yaml_mark_t // The position mark.
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}
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// The states of the parser.
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type yaml_parser_state_t int
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const (
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yaml_PARSE_STREAM_START_STATE yaml_parser_state_t = iota
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yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE // Expect the beginning of an implicit document.
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yaml_PARSE_DOCUMENT_START_STATE // Expect DOCUMENT-START.
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yaml_PARSE_DOCUMENT_CONTENT_STATE // Expect the content of a document.
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yaml_PARSE_DOCUMENT_END_STATE // Expect DOCUMENT-END.
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yaml_PARSE_BLOCK_NODE_STATE // Expect a block node.
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yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE // Expect a block node or indentless sequence.
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yaml_PARSE_FLOW_NODE_STATE // Expect a flow node.
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yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a block sequence.
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yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE // Expect an entry of a block sequence.
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yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE // Expect an entry of an indentless sequence.
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yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping.
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yaml_PARSE_BLOCK_MAPPING_KEY_STATE // Expect a block mapping key.
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yaml_PARSE_BLOCK_MAPPING_VALUE_STATE // Expect a block mapping value.
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yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a flow sequence.
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yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE // Expect an entry of a flow sequence.
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yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE // Expect a key of an ordered mapping.
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yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE // Expect a value of an ordered mapping.
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yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE // Expect the and of an ordered mapping entry.
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yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping.
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yaml_PARSE_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping.
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yaml_PARSE_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping.
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yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE // Expect an empty value of a flow mapping.
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yaml_PARSE_END_STATE // Expect nothing.
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)
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func (ps yaml_parser_state_t) String() string {
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switch ps {
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case yaml_PARSE_STREAM_START_STATE:
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return "yaml_PARSE_STREAM_START_STATE"
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case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE:
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return "yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE"
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case yaml_PARSE_DOCUMENT_START_STATE:
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return "yaml_PARSE_DOCUMENT_START_STATE"
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case yaml_PARSE_DOCUMENT_CONTENT_STATE:
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return "yaml_PARSE_DOCUMENT_CONTENT_STATE"
|
|
case yaml_PARSE_DOCUMENT_END_STATE:
|
|
return "yaml_PARSE_DOCUMENT_END_STATE"
|
|
case yaml_PARSE_BLOCK_NODE_STATE:
|
|
return "yaml_PARSE_BLOCK_NODE_STATE"
|
|
case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
|
|
return "yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE"
|
|
case yaml_PARSE_FLOW_NODE_STATE:
|
|
return "yaml_PARSE_FLOW_NODE_STATE"
|
|
case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
|
|
return "yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE"
|
|
case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
|
|
return "yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE"
|
|
case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
|
|
return "yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE"
|
|
case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
|
|
return "yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE"
|
|
case yaml_PARSE_BLOCK_MAPPING_KEY_STATE:
|
|
return "yaml_PARSE_BLOCK_MAPPING_KEY_STATE"
|
|
case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE:
|
|
return "yaml_PARSE_BLOCK_MAPPING_VALUE_STATE"
|
|
case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
|
|
return "yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE"
|
|
case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
|
|
return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE"
|
|
case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
|
|
return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE"
|
|
case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
|
|
return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE"
|
|
case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
|
|
return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE"
|
|
case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
|
|
return "yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE"
|
|
case yaml_PARSE_FLOW_MAPPING_KEY_STATE:
|
|
return "yaml_PARSE_FLOW_MAPPING_KEY_STATE"
|
|
case yaml_PARSE_FLOW_MAPPING_VALUE_STATE:
|
|
return "yaml_PARSE_FLOW_MAPPING_VALUE_STATE"
|
|
case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
|
|
return "yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE"
|
|
case yaml_PARSE_END_STATE:
|
|
return "yaml_PARSE_END_STATE"
|
|
}
|
|
return "<unknown parser state>"
|
|
}
|
|
|
|
// This structure holds aliases data.
|
|
type yaml_alias_data_t struct {
|
|
anchor []byte // The anchor.
|
|
index int // The node id.
|
|
mark yaml_mark_t // The anchor mark.
|
|
}
|
|
|
|
// The parser structure.
|
|
//
|
|
// All members are internal. Manage the structure using the
|
|
// yaml_parser_ family of functions.
|
|
type yaml_parser_t struct {
|
|
|
|
// Error handling
|
|
|
|
error yaml_error_type_t // Error type.
|
|
|
|
problem string // Error description.
|
|
|
|
// The byte about which the problem occurred.
|
|
problem_offset int
|
|
problem_value int
|
|
problem_mark yaml_mark_t
|
|
|
|
// The error context.
|
|
context string
|
|
context_mark yaml_mark_t
|
|
|
|
// Reader stuff
|
|
|
|
read_handler yaml_read_handler_t // Read handler.
|
|
|
|
input_reader io.Reader // File input data.
|
|
input []byte // String input data.
|
|
input_pos int
|
|
|
|
eof bool // EOF flag
|
|
|
|
buffer []byte // The working buffer.
|
|
buffer_pos int // The current position of the buffer.
|
|
|
|
unread int // The number of unread characters in the buffer.
|
|
|
|
raw_buffer []byte // The raw buffer.
|
|
raw_buffer_pos int // The current position of the buffer.
|
|
|
|
encoding yaml_encoding_t // The input encoding.
|
|
|
|
offset int // The offset of the current position (in bytes).
|
|
mark yaml_mark_t // The mark of the current position.
|
|
|
|
// Scanner stuff
|
|
|
|
stream_start_produced bool // Have we started to scan the input stream?
|
|
stream_end_produced bool // Have we reached the end of the input stream?
|
|
|
|
flow_level int // The number of unclosed '[' and '{' indicators.
|
|
|
|
tokens []yaml_token_t // The tokens queue.
|
|
tokens_head int // The head of the tokens queue.
|
|
tokens_parsed int // The number of tokens fetched from the queue.
|
|
token_available bool // Does the tokens queue contain a token ready for dequeueing.
|
|
|
|
indent int // The current indentation level.
|
|
indents []int // The indentation levels stack.
|
|
|
|
simple_key_allowed bool // May a simple key occur at the current position?
|
|
simple_keys []yaml_simple_key_t // The stack of simple keys.
|
|
simple_keys_by_tok map[int]int // possible simple_key indexes indexed by token_number
|
|
|
|
// Parser stuff
|
|
|
|
state yaml_parser_state_t // The current parser state.
|
|
states []yaml_parser_state_t // The parser states stack.
|
|
marks []yaml_mark_t // The stack of marks.
|
|
tag_directives []yaml_tag_directive_t // The list of TAG directives.
|
|
|
|
// Dumper stuff
|
|
|
|
aliases []yaml_alias_data_t // The alias data.
|
|
|
|
document *yaml_document_t // The currently parsed document.
|
|
}
|
|
|
|
// Emitter Definitions
|
|
|
|
// 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
|
|
|
|
type yaml_emitter_state_t int
|
|
|
|
// The emitter states.
|
|
const (
|
|
// Expect STREAM-START.
|
|
yaml_EMIT_STREAM_START_STATE yaml_emitter_state_t = iota
|
|
|
|
yaml_EMIT_FIRST_DOCUMENT_START_STATE // Expect the first DOCUMENT-START or STREAM-END.
|
|
yaml_EMIT_DOCUMENT_START_STATE // Expect DOCUMENT-START or STREAM-END.
|
|
yaml_EMIT_DOCUMENT_CONTENT_STATE // Expect the content of a document.
|
|
yaml_EMIT_DOCUMENT_END_STATE // Expect DOCUMENT-END.
|
|
yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a flow sequence.
|
|
yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE // Expect an item of a flow sequence.
|
|
yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping.
|
|
yaml_EMIT_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping.
|
|
yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a flow mapping.
|
|
yaml_EMIT_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping.
|
|
yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a block sequence.
|
|
yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE // Expect an item of a block sequence.
|
|
yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping.
|
|
yaml_EMIT_BLOCK_MAPPING_KEY_STATE // Expect the key of a block mapping.
|
|
yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a block mapping.
|
|
yaml_EMIT_BLOCK_MAPPING_VALUE_STATE // Expect a value of a block mapping.
|
|
yaml_EMIT_END_STATE // Expect nothing.
|
|
)
|
|
|
|
// The emitter structure.
|
|
//
|
|
// All members are internal. Manage the structure using the @c yaml_emitter_
|
|
// family of functions.
|
|
type yaml_emitter_t struct {
|
|
|
|
// Error handling
|
|
|
|
error yaml_error_type_t // Error type.
|
|
problem string // Error description.
|
|
|
|
// Writer stuff
|
|
|
|
write_handler yaml_write_handler_t // Write handler.
|
|
|
|
output_buffer *[]byte // String output data.
|
|
output_writer io.Writer // File output data.
|
|
|
|
buffer []byte // The working buffer.
|
|
buffer_pos int // The current position of the buffer.
|
|
|
|
raw_buffer []byte // The raw buffer.
|
|
raw_buffer_pos int // The current position of the buffer.
|
|
|
|
encoding yaml_encoding_t // The stream encoding.
|
|
|
|
// Emitter stuff
|
|
|
|
canonical bool // If the output is in the canonical style?
|
|
best_indent int // The number of indentation spaces.
|
|
best_width int // The preferred width of the output lines.
|
|
unicode bool // Allow unescaped non-ASCII characters?
|
|
line_break yaml_break_t // The preferred line break.
|
|
|
|
state yaml_emitter_state_t // The current emitter state.
|
|
states []yaml_emitter_state_t // The stack of states.
|
|
|
|
events []yaml_event_t // The event queue.
|
|
events_head int // The head of the event queue.
|
|
|
|
indents []int // The stack of indentation levels.
|
|
|
|
tag_directives []yaml_tag_directive_t // The list of tag directives.
|
|
|
|
indent int // The current indentation level.
|
|
|
|
flow_level int // The current flow level.
|
|
|
|
root_context bool // Is it the document root context?
|
|
sequence_context bool // Is it a sequence context?
|
|
mapping_context bool // Is it a mapping context?
|
|
simple_key_context bool // Is it a simple mapping key context?
|
|
|
|
line int // The current line.
|
|
column int // The current column.
|
|
whitespace bool // If the last character was a whitespace?
|
|
indention bool // If the last character was an indentation character (' ', '-', '?', ':')?
|
|
open_ended bool // If an explicit document end is required?
|
|
|
|
// Anchor analysis.
|
|
anchor_data struct {
|
|
anchor []byte // The anchor value.
|
|
alias bool // Is it an alias?
|
|
}
|
|
|
|
// Tag analysis.
|
|
tag_data struct {
|
|
handle []byte // The tag handle.
|
|
suffix []byte // The tag suffix.
|
|
}
|
|
|
|
// Scalar analysis.
|
|
scalar_data struct {
|
|
value []byte // The scalar value.
|
|
multiline bool // Does the scalar contain line breaks?
|
|
flow_plain_allowed bool // Can the scalar be expessed in the flow plain style?
|
|
block_plain_allowed bool // Can the scalar be expressed in the block plain style?
|
|
single_quoted_allowed bool // Can the scalar be expressed in the single quoted style?
|
|
block_allowed bool // Can the scalar be expressed in the literal or folded styles?
|
|
style yaml_scalar_style_t // The output style.
|
|
}
|
|
|
|
// Dumper stuff
|
|
|
|
opened bool // If the stream was already opened?
|
|
closed bool // If the stream was already closed?
|
|
|
|
// The information associated with the document nodes.
|
|
anchors *struct {
|
|
references int // The number of references.
|
|
anchor int // The anchor id.
|
|
serialized bool // If the node has been emitted?
|
|
}
|
|
|
|
last_anchor_id int // The last assigned anchor id.
|
|
|
|
document *yaml_document_t // The currently emitted document.
|
|
}
|