Enum ParseError 

pub enum ParseError {
    Expected {
        expected: Cow<'static, str>,
        found: TokenKind,
        span: Span,
    },
    ExpectedExpression {
        span: Span,
    },
    ExpectedStatement {
        span: Span,
    },
    ExpectedOpenTag {
        span: Span,
    },
    UnterminatedString {
        span: Span,
    },
    ExpectedAfter {
        expected: Cow<'static, str>,
        after: Cow<'static, str>,
        span: Span,
    },
    UnclosedDelimiter {
        delimiter: Cow<'static, str>,
        opened_at: Span,
        span: Span,
    },
    Forbidden {
        message: Cow<'static, str>,
        span: Span,
    },
    ForbiddenWarning {
        message: Cow<'static, str>,
        span: Span,
    },
    VersionTooLow {
        feature: Cow<'static, str>,
        required: Cow<'static, str>,
        used: Cow<'static, str>,
        span: Span,
    },
}

A parse error or diagnostic emitted during parsing.

The parser recovers from all errors and always produces a complete AST, so errors are informational rather than fatal. Each variant carries a Span identifying the source location.

Variants

Expected

A specific token was expected but a different one was found.

Fields

expected: Cow<'static, str>

Description of the expected token.

found: TokenKind

Token actually found.

span: Span

Source range of the error.

ExpectedExpression

An expression was expected but not found (e.g. empty parentheses).

Fields

span: Span

Source range of the error.

ExpectedStatement

A statement was expected but not found.

Fields

span: Span

Source range of the error.

ExpectedOpenTag

PHP source must start with <?php or <?.

Fields

span: Span

Source range of the error.

UnterminatedString

A string literal was opened but never closed.

Fields

span: Span

Source range of the error.

ExpectedAfter

A required token was missing after another construct.

Fields

expected: Cow<'static, str>

Description of the expected token.

after: Cow<'static, str>

Construct the token should follow.

span: Span

Source range of the error.

UnclosedDelimiter

A delimiter (parenthesis, bracket, brace) was opened but never closed.

Fields

delimiter: Cow<'static, str>

The unclosed delimiter.

opened_at: Span

Where the delimiter was opened.

span: Span

Source range of the error.

Forbidden

A construct that is syntactically valid but semantically forbidden (e.g. (unset) cast, deprecated syntax). Equivalent to a PHP fatal.

Fields

message: Cow<'static, str>

Error message.

span: Span

Source range of the error.

ForbiddenWarning

A construct PHP only warns about (e.g. final private method). Treated as a non-fatal diagnostic; severity() returns Severity::Warning.

Fields

message: Cow<'static, str>

Error message.

span: Span

Source range of the error.

VersionTooLow

Syntax that requires a newer PHP version than the targeted one. Emitted by crate::parse_versioned when the source uses features unavailable in the specified crate::PhpVersion.

Fields

feature: Cow<'static, str>

Name of the feature used.

required: Cow<'static, str>

Minimum PHP version required.

used: Cow<'static, str>

PHP version targeted.

span: Span

Source range of the error.

Implementations

impl ParseError

pub fn span(&self) -> Span

Source range of the error.

pub fn severity(&self) -> Severity

Returns the diagnostic severity. Currently only ParseError::ForbiddenWarning is at warning level; every other variant is an error.

Trait Implementations

impl Clone for ParseError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseError

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

Formats the value using the given formatter.

impl Display for ParseError

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

Formats the value using the given formatter.

impl Error for ParseError

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.