Enum PatternProblem 

pub enum PatternProblem {
    NoAnchor,
    AdjacentCaptures {
        first: String,
        second: String,
    },
    UnsupportedBraces {
        near: String,
    },
    EmptyCapture,
    UnknownCapture {
        name: String,
        suggestion: Option<String>,
    },
    DuplicateCapture {
        name: String,
    },
}

One problem found in a match: pattern (validation pass 1), typed so each maps to a stable diagnostic code.

Variants

NoAnchor

No literal text to anchor on — a bare capture matches every step.

AdjacentCaptures

Two captures with nothing between them — the matcher cannot split them.

Fields

first: String

First capture name.

second: String

Second capture name.

UnsupportedBraces

A stray {/} inside literal text (unclosed or unescaped).

Fields

near: String

The literal fragment near the problem.

EmptyCapture

An empty {} capture.

UnknownCapture

A capture that names no declared param.

Fields

name: String

The capture name as written.

suggestion: Option<String>

Closest declared param, when one is near.

DuplicateCapture

The same capture written twice — a later match would silently overwrite the earlier binding.

Fields

name: String

The repeated capture name.

Implementations

impl PatternProblem

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

The stable diagnostic code for this problem.

Trait Implementations

impl Clone for PatternProblem

fn clone(&self) -> PatternProblem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PatternProblem

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

Formats the value using the given formatter.

impl Display for PatternProblem

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

Formats the value using the given formatter.

impl Eq for PatternProblem

impl PartialEq for PatternProblem

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PatternProblem