func yaml_emitter_select_scalar_style()

in yaml/emitterc.go [823:869]

• 43 lines of code
• 29 McCabe index (conditional complexity)

func yaml_emitter_select_scalar_style(emitter *yaml_emitter_t, event *yaml_event_t) bool {

	no_tag := len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0
	if no_tag && !event.implicit && !event.quoted_implicit {
		return yaml_emitter_set_emitter_error(emitter, "neither tag nor implicit flags are specified")
	}

	style := event.scalar_style()
	if style == yaml_ANY_SCALAR_STYLE {
		style = yaml_PLAIN_SCALAR_STYLE
	}
	if emitter.canonical {
		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
	}
	if emitter.simple_key_context && emitter.scalar_data.multiline {
		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
	}

	if style == yaml_PLAIN_SCALAR_STYLE {
		if emitter.flow_level > 0 && !emitter.scalar_data.flow_plain_allowed ||
			emitter.flow_level == 0 && !emitter.scalar_data.block_plain_allowed {
			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
		}
		if len(emitter.scalar_data.value) == 0 && (emitter.flow_level > 0 || emitter.simple_key_context) {
			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
		}
		if no_tag && !event.implicit {
			style = yaml_SINGLE_QUOTED_SCALAR_STYLE
		}
	}
	if style == yaml_SINGLE_QUOTED_SCALAR_STYLE {
		if !emitter.scalar_data.single_quoted_allowed {
			style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
		}
	}
	if style == yaml_LITERAL_SCALAR_STYLE || style == yaml_FOLDED_SCALAR_STYLE {
		if !emitter.scalar_data.block_allowed || emitter.flow_level > 0 || emitter.simple_key_context {
			style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
		}
	}

	if no_tag && !event.quoted_implicit && style != yaml_PLAIN_SCALAR_STYLE {
		emitter.tag_data.handle = []byte{'!'}
	}
	emitter.scalar_data.style = style
	return true
}