Enum PreprocessError 

pub enum PreprocessError {
    IncludeNotFound(ResolveError),
    IncludeCycle {
        file: String,
    },
    UnmatchedEndif {
        file: String,
        line: usize,
    },
    UnmatchedElse {
        file: String,
        line: usize,
    },
    UnclosedConditional {
        file: String,
        line: usize,
    },
    SyntaxError {
        file: String,
        line: usize,
        message: String,
    },
    ErrorDirective {
        file: String,
        line: usize,
        message: String,
    },
    TrailingBackslash {
        file: String,
    },
}

Top-level preprocessor error.

Variants

IncludeNotFound(ResolveError)

#include could not be resolved.

IncludeCycle

#include already in the expansion stack — cycle detected.

Fields

file: String

File that was to be included cyclically.

UnmatchedEndif

#endif without a matching #ifdef/#ifndef.

Fields

file: String

Source file of the unmatched directive.

line: usize

1-indexed line.

UnmatchedElse

#else without a matching #ifdef/#ifndef.

Fields

file: String

line: usize

UnclosedConditional

#ifdef/#ifndef without a closing #endif.

Fields

file: String

line: usize

SyntaxError

Directive with faulty syntax (e.g. #define without a name).

Fields

file: String

line: usize

message: String

ErrorDirective

#error <message> — explicitly requested build stop.

Fields

file: String

Source file.

line: usize

Line.

message: String

Content of the directive.

TrailingBackslash

Backslash as the last character in the source file — Spec §7.3: “A backslash character may not be the last character in a source file.”

Fields

file: String

Source file.

Trait Implementations

impl Clone for PreprocessError

fn clone(&self) -> PreprocessError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PreprocessError

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

Formats the value using the given formatter.

impl Display for PreprocessError

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

Formats the value using the given formatter.

impl Eq for PreprocessError

impl Error for PreprocessError

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 PreprocessError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for PreprocessError