[−][src]Trait rslint_errors::file::Files

pub trait Files {
    fn name(&self, id: FileId) -> Option<&str>;

    fn source(&self, id: FileId) -> Option<&str>;

    fn line_index(&self, file_id: FileId, byte_index: usize) -> Option<usize>;

    fn line_range(&self, id: FileId, line_index: usize) -> Option<Range<usize>>;
}

Interface for interacting with source files that are identified by a unique identifier.

Required methods

fn name(&self, id: FileId) -> Option<&str>

Returns the name of the file identified by the id.

fn source(&self, id: FileId) -> Option<&str>

Returns the source of the file identified by the id.

fn line_index(&self, file_id: FileId, byte_index: usize) -> Option<usize>

The index of the line at the byte index.

Implementation

This can be implemented by caching the results of line_starts and then use binary_search to compute the line index.

ⓘThis example is not tested
match self.line_starts.binary_search(byte_index) {
    Ok(line) => line,
    Err(next_line) => next_line - 1,
}

fn line_range(&self, id: FileId, line_index: usize) -> Option<Range<usize>>

The byte range of line in the source of the file.

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Implementors

impl Files for SimpleFile[src]

impl Files for SimpleFiles[src]

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