Struct rustc_span::SourceFile

pub struct SourceFile {
    pub name: FileName,
    pub src: Option<Lrc<String>>,
    pub src_hash: SourceFileHash,
    pub external_src: FreezeLock<ExternalSource>,
    pub start_pos: BytePos,
    pub source_len: RelativeBytePos,
    pub lines: FreezeLock<SourceFileLines>,
    pub multibyte_chars: Vec<MultiByteChar>,
    pub normalized_pos: Vec<NormalizedPos>,
    pub stable_id: StableSourceFileId,
    pub cnum: CrateNum,
}

A single source in the SourceMap.

Fields

name: FileName

The name of the file that the source came from. Source that doesn’t originate from files has names between angle brackets by convention (e.g., <anon>).

src: Option<Lrc<String>>

The complete source code.

src_hash: SourceFileHash

The source code’s hash.

external_src: FreezeLock<ExternalSource>

The external source code (used for external crates, which will have a None value as self.src.

start_pos: BytePos

The start position of this source in the SourceMap.

source_len: RelativeBytePos

The byte length of this source.

lines: FreezeLock<SourceFileLines>

Locations of lines beginnings in the source code.

multibyte_chars: Vec<MultiByteChar>

Locations of multi-byte characters in the source code.

normalized_pos: Vec<NormalizedPos>

Locations of characters removed during normalization.

stable_id: StableSourceFileId

A hash of the filename & crate-id, used for uniquely identifying source files within the crate graph and for speeding up hashing in incremental compilation.

cnum: CrateNum

Indicates which crate this SourceFile was imported from.

Implementations

impl SourceFile

pub fn new( name: FileName, src: String, hash_kind: SourceFileHashAlgorithm, ) -> Result<Self, OffsetOverflowError>

pub(crate) fn convert_diffs_to_lines_frozen(&self)

This converts the lines field to contain SourceFileLines::Lines if needed and freezes it.

pub fn lines(&self) -> &[RelativeBytePos]

pub fn line_begin_pos(&self, pos: BytePos) -> BytePos

Returns the BytePos of the beginning of the current line.

pub fn add_external_src<F>(&self, get_src: F) -> bool

where F: FnOnce() -> Option<String>,

Add externally loaded source. If the hash of the input doesn’t match or no input is supplied via None, it is interpreted as an error and the corresponding enum variant is set. The return value signifies whether some kind of source is present.

pub fn get_line(&self, line_number: usize) -> Option<Cow<'_, str>>

Gets a line from the list of pre-computed line-beginnings. The line number here is 0-based.

pub fn is_real_file(&self) -> bool

pub fn is_imported(&self) -> bool

pub fn count_lines(&self) -> usize

pub fn absolute_position(&self, pos: RelativeBytePos) -> BytePos

pub fn relative_position(&self, pos: BytePos) -> RelativeBytePos

pub fn end_position(&self) -> BytePos

pub fn lookup_line(&self, pos: RelativeBytePos) -> Option<usize>

Finds the line containing the given position. The return value is the index into the lines array of this SourceFile, not the 1-based line number. If the source_file is empty or the position is located before the first line, None is returned.

pub fn line_bounds(&self, line_index: usize) -> Range<BytePos>

pub fn contains(&self, byte_pos: BytePos) -> bool

Returns whether or not the file contains the given SourceMap byte position. The position one past the end of the file is considered to be contained by the file. This implies that files for which is_empty returns true still contain one byte position according to this function.

pub fn is_empty(&self) -> bool

pub fn original_relative_byte_pos(&self, pos: BytePos) -> RelativeBytePos

Calculates the original byte position relative to the start of the file based on the given byte position.

pub fn normalized_byte_pos(&self, offset: u32) -> BytePos

Calculates a normalized byte position from a byte offset relative to the start of the file.

When we get an inline assembler error from LLVM during codegen, we import the expanded assembly code as a new SourceFile, which can then be used for error reporting with spans. However the byte offsets given to us by LLVM are relative to the start of the original buffer, not the normalized one. Hence we need to convert those offsets to the normalized form when constructing spans.

pub(crate) fn bytepos_to_file_charpos(&self, bpos: RelativeBytePos) -> CharPos

Converts an relative RelativeBytePos to a CharPos relative to the SourceFile.

pub(crate) fn lookup_file_pos(&self, pos: RelativeBytePos) -> (usize, CharPos)

Looks up the file’s (1-based) line number and (0-based CharPos) column offset, for a given RelativeBytePos.

pub fn lookup_file_pos_with_col_display( &self, pos: BytePos, ) -> (usize, CharPos, usize)

Looks up the file’s (1-based) line number, (0-based CharPos) column offset, and (0-based) column offset when displayed, for a given BytePos.

Trait Implementations

impl Clone for SourceFile

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SourceFile

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

Formats the value using the given formatter.

impl<D: SpanDecoder> Decodable<D> for SourceFile

fn decode(d: &mut D) -> SourceFile

impl<S: SpanEncoder> Encodable<S> for SourceFile

fn encode(&self, s: &mut S)

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 272 bytes