Struct syntax::codemap::FileMapUnstable

pub struct FileMap {
    pub name: FileName,
    pub src: String,
    pub start_pos: BytePos,
    pub lines: RefCell<Vec<BytePos>>,
    pub multibyte_chars: RefCell<Vec<MultiByteChar>>,
}

A single source in the CodeMap

Fields

name	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	The complete source code
start_pos	The start position of this source in the CodeMap
lines	Locations of lines beginnings in the source code
multibyte_chars	Locations of multi-byte characters in the source code

Methods

impl FileMap

fn next_line(&self, pos: BytePos)

EFFECT: register a start-of-line offset in the table of line-beginnings. UNCHECKED INVARIANT: these offsets must be added in the right order and must be in the right places; there is shared knowledge about what ends a line between this file and parse.rs WARNING: pos param here is the offset relative to start of CodeMap, and CodeMap will append a newline when adding a filemap without a newline at the end, so the safe way to call this is with value calculated as filemap.start_pos + newline_offset_relative_to_the_start_of_filemap.

fn get_line(&self, line_number: usize) -> Option<String>

get a line from the list of pre-computed line-beginnings

fn record_multibyte_char(&self, pos: BytePos, bytes: usize)

fn is_real_file(&self) -> bool