Enum ParseTreePatternError 

pub enum ParseTreePatternError {
    UnterminatedTag {
        pattern: String,
    },
    MissingStartTag {
        pattern: String,
    },
    DelimitersOutOfOrder {
        pattern: String,
    },
    EmptyTag {
        pattern: String,
    },
    UnknownToken {
        name: String,
        pattern: String,
    },
    UnknownRule {
        name: String,
        pattern: String,
    },
    InvalidTag {
        tag: String,
        pattern: String,
    },
    Tokenization {
        message: String,
    },
    StartRuleDoesNotConsumeFullPattern {
        pattern: String,
    },
    CannotInvokeStartRule {
        rule_index: usize,
        message: String,
    },
    BypassAtn {
        message: String,
    },
    EmptyDelimiter {
        which: &'static str,
    },
}

An invalid tree pattern or a failure while compiling one.

Variants

UnterminatedTag

A start delimiter was seen without a matching stop delimiter.

Fields

pattern: String

MissingStartTag

A stop delimiter was seen without a preceding start delimiter.

Fields

pattern: String

DelimitersOutOfOrder

A stop delimiter appeared at or before its start delimiter.

Fields

pattern: String

EmptyTag

A tag was empty (<> or <label:>).

Fields

pattern: String

UnknownToken

A <TOKEN> tag named a token the grammar does not define.

Fields

name: String

pattern: String

UnknownRule

A <rule> tag named a parser rule the grammar does not define.

Fields

name: String

pattern: String

InvalidTag

A tag started with neither an upper- nor lower-case letter, so it could not be classified as a token or rule reference.

Fields

tag: String

pattern: String

Tokenization

Lexing a literal chunk with the real lexer failed.

Fields

message: String

StartRuleDoesNotConsumeFullPattern

The start rule did not consume the whole pattern (ANTLR issue #413).

Fields

pattern: String

CannotInvokeStartRule

Interpreting the pattern token stream failed.

Fields

rule_index: usize

message: String

BypassAtn

The rule-bypass transform of the grammar ATN failed.

Fields

message: String

EmptyDelimiter

ParseTreePatternMatcher::set_delimiters was given an empty start or stop delimiter.

Fields

which: &'static str

Trait Implementations

impl Clone for ParseTreePatternError

fn clone(&self) -> ParseTreePatternError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseTreePatternError

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

Formats the value using the given formatter.

impl Display for ParseTreePatternError

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

Formats the value using the given formatter.

impl Eq for ParseTreePatternError

impl Error for ParseTreePatternError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for ParseTreePatternError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ParseTreePatternError