Enum CompileError 

pub enum CompileError {
    UndefinedRuleRef {
        rule: String,
        reference: String,
    },
    CyclicDependency {
        path: Vec<String>,
    },
    UndefinedTerminal {
        terminal: String,
    },
    DuplicateRule {
        name: String,
    },
    NoTerminals,
    MissingCondition {
        rule: String,
    },
    DuplicateTerminal {
        terminal: String,
    },
}

Errors produced during ruleset compilation.

Variants

UndefinedRuleRef

A rule references another rule that does not exist.

Fields

rule: String

The rule containing the bad reference.

reference: String

The referenced rule name that was not found.

CyclicDependency

A cycle was detected in rule dependencies.

Fields

path: Vec<String>

The chain of rule names forming the cycle.

UndefinedTerminal

A terminal references a rule that does not exist.

Fields

terminal: String

The terminal name with no matching rule.

DuplicateRule

Two rules share the same name.

Fields

name: String

The duplicated rule name.

NoTerminals

No terminal rules were defined.

MissingCondition

A rule was defined without a condition expression.

Fields

rule: String

The rule missing a condition.

DuplicateTerminal

The same rule was registered as a terminal more than once.

Fields

terminal: String

The duplicated terminal name.

Trait Implementations

impl Debug for CompileError

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

Formats the value using the given formatter.

impl Display for CompileError

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

Formats the value using the given formatter.

impl Error for CompileError

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 From<CompileError> for OorooError

fn from(source: CompileError) -> Self

Converts to this type from the input type.