Enum RequireIndent 

#[non_exhaustive]
pub enum RequireIndent {
    Unchecked,
    Even,
    Divisible(usize),
    Uniform(Option<usize>),
}

Policy for handling the YAML merge key (<<) during parsing.

YAML 1.2 §10.2 defines << as a “merge key” that, when used as a mapping key, splices the value’s mapping (or sequence of mappings) into the enclosing mapping. The variants below let callers opt out of that behaviour.

Examples

Indentation-validation mode for the YAML scanner.

Issue #6 surface — every block-context indent transition is classified per the chosen mode. The default (RequireIndent::Unchecked) accepts any well-formed YAML indent (the YAML 1.2 spec mandate), which is what every other Rust YAML parser does.

Stricter modes are useful in pipelines that require uniform indentation house style (linters, formatters, reviewer gates) — a config file with mixed 2-space and 4-space indent passes by-spec but fails consistency review.

Variants

• RequireIndent::Unchecked (default) — by-spec mode.
• RequireIndent::Even — every indent delta must be even.
• RequireIndent::Divisible(N) — every indent delta must be divisible by N.
• RequireIndent::Uniform(Some(N)) — every indent delta must equal N. None means “auto-detect from the first delta and require the rest to match it”.

Examples

use noyalib::{ParserConfig, RequireIndent};
let cfg = ParserConfig::new().require_indent(RequireIndent::Even);
assert_eq!(cfg.require_indent, RequireIndent::Even);

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Unchecked

Accept any indent transition the YAML 1.2 spec allows. Default.

Even

Indent delta must be even (2, 4, 6, …). The most common house-style.

Divisible(usize)

Indent delta must be divisible by N.

Uniform(Option<usize>)

Some(N): every indent delta must equal N. None: the first delta sets the standard for the document; subsequent deltas must match it.

Trait Implementations

impl Clone for RequireIndent

fn clone(&self) -> RequireIndent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RequireIndent

impl Debug for RequireIndent

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

Formats the value using the given formatter.

impl Default for RequireIndent

fn default() -> RequireIndent

Returns the “default value” for a type.

impl Eq for RequireIndent

impl PartialEq for RequireIndent

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RequireIndent