Enum Placement 

pub enum Placement {
    Above,
    Right,
    Free,
    Last,
}

A positional hint for a YAML source comment.

The parser currently recognizes these placements:

# Above
key: value # Right

# Free

next: value

# Last

Variants

Above

An own-line comment immediately before another YAML token.

This usually means the comment visually describes the following node. Consecutive own-line comments without blank lines between them are also considered Above, so a comment block can attach to the next YAML element as a group.

Right

A same-line comment after YAML content or syntax. Examples include key: value # Right and - # Right for an empty sequence entry.

Free

A standalone own-line comment that is separated from nearby YAML tokens.

This is the fallback for comments that are neither same-line comments, immediately above a following token, nor the final comment in the stream. Consumers should treat Free as not having an obvious neighboring node.

Last

An own-line comment at the end of the input stream.

A Last comment may be followed by blank lines, but no further YAML token appears before StreamEnd.

Trait Implementations

impl Clone for Placement

fn clone(&self) -> Placement

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Placement

impl Debug for Placement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Placement

fn default() -> Placement

Returns the “default value” for a type.

impl Eq for Placement

impl PartialEq for Placement

fn eq(&self, other: &Placement) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Placement