func yaml_emitter_emit_document_start()

in yaml/emitterc.go [336:447]

• 100 lines of code
• 37 McCabe index (conditional complexity)

func yaml_emitter_emit_document_start(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool {

	if event.typ == yaml_DOCUMENT_START_EVENT {

		if event.version_directive != nil {
			if !yaml_emitter_analyze_version_directive(emitter, event.version_directive) {
				return false
			}
		}

		for i := 0; i < len(event.tag_directives); i++ {
			tag_directive := &event.tag_directives[i]
			if !yaml_emitter_analyze_tag_directive(emitter, tag_directive) {
				return false
			}
			if !yaml_emitter_append_tag_directive(emitter, tag_directive, false) {
				return false
			}
		}

		for i := 0; i < len(default_tag_directives); i++ {
			tag_directive := &default_tag_directives[i]
			if !yaml_emitter_append_tag_directive(emitter, tag_directive, true) {
				return false
			}
		}

		implicit := event.implicit
		if !first || emitter.canonical {
			implicit = false
		}

		if emitter.open_ended && (event.version_directive != nil || len(event.tag_directives) > 0) {
			if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
				return false
			}
			if !yaml_emitter_write_indent(emitter) {
				return false
			}
		}

		if event.version_directive != nil {
			implicit = false
			if !yaml_emitter_write_indicator(emitter, []byte("%YAML"), true, false, false) {
				return false
			}
			if !yaml_emitter_write_indicator(emitter, []byte("1.1"), true, false, false) {
				return false
			}
			if !yaml_emitter_write_indent(emitter) {
				return false
			}
		}

		if len(event.tag_directives) > 0 {
			implicit = false
			for i := 0; i < len(event.tag_directives); i++ {
				tag_directive := &event.tag_directives[i]
				if !yaml_emitter_write_indicator(emitter, []byte("%TAG"), true, false, false) {
					return false
				}
				if !yaml_emitter_write_tag_handle(emitter, tag_directive.handle) {
					return false
				}
				if !yaml_emitter_write_tag_content(emitter, tag_directive.prefix, true) {
					return false
				}
				if !yaml_emitter_write_indent(emitter) {
					return false
				}
			}
		}

		if yaml_emitter_check_empty_document(emitter) {
			implicit = false
		}
		if !implicit {
			if !yaml_emitter_write_indent(emitter) {
				return false
			}
			if !yaml_emitter_write_indicator(emitter, []byte("---"), true, false, false) {
				return false
			}
			if emitter.canonical {
				if !yaml_emitter_write_indent(emitter) {
					return false
				}
			}
		}

		emitter.state = yaml_EMIT_DOCUMENT_CONTENT_STATE
		return true
	}

	if event.typ == yaml_STREAM_END_EVENT {
		if emitter.open_ended {
			if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) {
				return false
			}
			if !yaml_emitter_write_indent(emitter) {
				return false
			}
		}
		if !yaml_emitter_flush(emitter) {
			return false
		}
		emitter.state = yaml_EMIT_END_STATE
		return true
	}

	return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-START or STREAM-END")
}