Enum MatchRecognizePattern 

pub enum MatchRecognizePattern {
    Symbol {
        symbol: Ident,
        meta: Meta,
    },
    Start {
        meta: Meta,
    },
    End {
        meta: Meta,
    },
    Concat {
        patterns: ThinVec<MatchRecognizePattern>,
        meta: Meta,
    },
    Alternation {
        patterns: ThinVec<MatchRecognizePattern>,
        meta: Meta,
    },
    Group {
        pattern: Box<MatchRecognizePattern>,
        meta: Meta,
    },
    Exclude {
        pattern: Box<MatchRecognizePattern>,
        meta: Meta,
    },
    Permute {
        patterns: ThinVec<MatchRecognizePattern>,
        meta: Meta,
    },
    Repetition {
        pattern: Box<MatchRecognizePattern>,
        quantifier: RepetitionQuantifier,
        meta: Meta,
    },
}

The row-pattern regular expression inside PATTERN ( … ) — a recursive grammar of pattern variables, anchors, grouping, alternation, concatenation, exclusion, permutation, and quantifiers.

Non-generic in the extension parameter: a pattern references only variable names (Ident) and structural operators, never an Expr. Every variant carries meta, so the whole tree is addressable (ADR-0002); the recursion is bounded by the parser’s shared depth guard.

Variants

Symbol

A pattern variable reference (A, STRT).

Fields

symbol: Ident

Pattern symbol referenced by this syntax.

meta: Meta

Source location and node identity.

Start

The partition-start anchor ^.

Fields

meta: Meta

Source location and node identity.

End

The partition-end anchor $.

Fields

meta: Meta

Source location and node identity.

Concat

A concatenation (sequence) a b c — matched in order.

Fields

patterns: ThinVec<MatchRecognizePattern>

patterns in source order.

meta: Meta

Source location and node identity.

Alternation

An alternation a | b | c — matched as the first branch that succeeds.

Fields

patterns: ThinVec<MatchRecognizePattern>

patterns in source order.

meta: Meta

Source location and node identity.

Group

A parenthesized group ( … ).

Fields

pattern: Box<MatchRecognizePattern>

The grouped sub-pattern.

meta: Meta

Source location and node identity.

Exclude

An exclusion {- … -} — matched but omitted from ALL ROWS PER MATCH output.

Fields

pattern: Box<MatchRecognizePattern>

The excluded sub-pattern.

meta: Meta

Source location and node identity.

Permute

PERMUTE ( p1, p2, … ) — matches the arguments in any order.

Fields

patterns: ThinVec<MatchRecognizePattern>

patterns in source order.

meta: Meta

Source location and node identity.

Repetition

A quantified pattern p*, p+, p{2,3} — repeat pattern per quantifier.

Fields

pattern: Box<MatchRecognizePattern>

The repeated sub-pattern.

quantifier: RepetitionQuantifier

The repetition count or range (*/+/?/{m,n}); see RepetitionQuantifier.

meta: Meta

Source location and node identity.

Trait Implementations

impl Clone for MatchRecognizePattern

fn clone(&self) -> MatchRecognizePattern

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MatchRecognizePattern

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MatchRecognizePattern

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for MatchRecognizePattern

impl Hash for MatchRecognizePattern

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for MatchRecognizePattern

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

Equality operator ==.

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

Inequality operator !=.

impl Render for MatchRecognizePattern

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

Return the render for this value.

fn operand_binding_power(&self) -> Option<BindingPower>

The binding power this node contributes when it appears as an operand, or None (the default) for a self-delimiting node — an atom, call, or constructor — that never needs parentheses.

impl Serialize for MatchRecognizePattern

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Spanned for MatchRecognizePattern

fn span(&self) -> Span

Return the span for this value.

impl StructuralPartialEq for MatchRecognizePattern