Struct CachingSourceMapView 

pub struct CachingSourceMapView<'sm> {
    source_map: &'sm SourceMap,
    file: Arc<SourceFile>,
    line_bounds: Range<BytePos>,
    line_number: usize,
}

A SourceMap wrapper that caches info about a single recent code position. This gives a good speedup when hashing spans, because often multiple spans within a single line are hashed in succession, and this avoids expensive SourceMap lookups each time the cache is hit. We used to cache multiple code positions, but caching a single position ended up being simpler and faster.

Fields

source_map: &'sm SourceMap

file: Arc<SourceFile>

line_bounds: Range<BytePos>

line_number: usize

Implementations

impl<'sm> CachingSourceMapView<'sm>

pub fn new(source_map: &'sm SourceMap) -> CachingSourceMapView<'sm>

fn pos_to_line(&self, pos: BytePos) -> (Range<BytePos>, usize)

fn update(&mut self, new_file: Option<Arc<SourceFile>>, pos: BytePos)

pub fn byte_pos_to_line_and_col( &mut self, pos: BytePos, ) -> Option<(Arc<SourceFile>, usize, RelativeBytePos)>

pub fn span_data_to_lines_and_cols( &mut self, span_data: &SpanData, ) -> Option<(&SourceFile, usize, BytePos, usize, BytePos)>

fn file_for_position(&self, pos: BytePos) -> Option<Arc<SourceFile>>

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: 32 bytes