Enum SynxlErrorKind 

pub enum SynxlErrorKind {
    MissingPrologue,
    UnsupportedVersion,
    UnknownDirective,
    NoFieldList,
    MalformedFieldList,
    DuplicateField,
    MarkerChain,
    NonDeterministicHint,
    BlockWithType,
    ZeroArity,
    Unwritable,
    LimitExceeded,
}

Hard-error conditions (§11.1). Every one of these aborts the parse; no partial result is produced.

Variants

MissingPrologue

Missing or malformed !synxl <version> prologue (§4.1).

UnsupportedVersion

Prologue declares a version this implementation does not support, or a repeated prologue declares a different version (§1.3, §4.1). For format version 1 the two conditions coincide: “different” implies “not 1”.

UnknownDirective

A line at indent 0 beginning with ! that is neither a prologue nor a field list — including SYNX directives such as !active (§4.1).

NoFieldList

Record line encountered while no field list is in effect (§4.2).

MalformedFieldList

Empty or unparsable !fields line (§5).

DuplicateField

Duplicate field name within one field list (§5.1).

MarkerChain

A marker run — chain (:a:b) or single (:custom) — in a field declaration (§5.2).

NonDeterministicHint

random / random:int / random:float / random:bool hint (§8.3).

BlockWithType

block combined with (type) or type: (§5.3).

ZeroArity

A field list whose every field carries block, i.e. arity 0 (§5.3.4).

Unwritable

Writer only. A value has no SYNXL rendering: it must be promoted to a block (§14.3) but promoting it would leave the field list at arity 0 (§5.3.4). §14.3 requires rejecting such a value loudly — emitting a document that reads back differently, or one that no reader accepts, is not permitted. Cannot arise for a value obtained by parsing (§14.1).

LimitExceeded

A §13 limit other than MAX_SYNXL_RECORD_BYTES was exceeded.

Implementations

impl SynxlErrorKind

pub fn as_str(self) -> &'static str

Trait Implementations

impl Clone for SynxlErrorKind

fn clone(&self) -> SynxlErrorKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SynxlErrorKind

impl Debug for SynxlErrorKind

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

Formats the value using the given formatter.

impl Display for SynxlErrorKind

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

Formats the value using the given formatter.

impl Eq for SynxlErrorKind

impl PartialEq for SynxlErrorKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SynxlErrorKind