Struct sourcemap::SourceMap

pub struct SourceMap {
    // some fields omitted
}

Represents a sourcemap in memory

This is always represents a regular "non-indexed" sourcemap. Particularly in case the from_reader method is used an index sourcemap will be rejected with an error on reading.

Methods

impl SourceMap

fn from_reader<R: Read>(rdr: R) -> Result<SourceMap>

Creates a sourcemap from a reader over a JSON stream in UTF-8 format. Optionally a "garbage header" as defined by the sourcemap draft specification is supported. In case an indexed sourcemap is encountered an error is returned.

use sourcemap::SourceMap;
let input: &[_] = b"{
    \"version\":3,
    \"sources\":[\"coolstuff.js\"],
    \"names\":[\"x\",\"alert\"],
    \"mappings\":\"AAAA,GAAIA,GAAI,EACR,IAAIA,GAAK,EAAG,CACVC,MAAM\"
}";
let sm = SourceMap::from_reader(input).unwrap();

fn new(version: u32, file: Option<String>, tokens: Vec<RawToken>, index: Vec<(u32, u32, u32)>, names: Vec<String>, sources: Vec<String>, sources_content: Option<Vec<Option<String>>>) -> SourceMap

Constructs a new sourcemap from raw components.

• version: the version is typically 3 which is the current darft version
• file: an optional filename of the sourcemap
• tokens: a list of raw tokens
• index: a sorted mapping of line and column to token index
• names: a vector of names
• sources a vector of source filenames
• sources_content optional source contents

fn get_version(&self) -> u32

Returns the version of the sourcemap.

fn get_file(&self) -> Option<&str>

Returns the embedded filename in case there is one.

fn get_token<'a>(&'a self, idx: u32) -> Option<Token<'a>>

Looks up a token by its index.

fn get_token_count(&self) -> u32

Returns the number of tokens in the sourcemap.

fn tokens<'a>(&'a self) -> TokenIter<'a>

Returns an iterator over the tokens.

fn lookup_token<'a>(&'a self, line: u32, col: u32) -> Option<Token<'a>>

Looks up the closest token to a given line and column.

fn get_source_count(&self) -> u32

Returns the number of sources in the sourcemap.

fn get_source(&self, idx: u32) -> Option<&str>

Looks up a source for a specific index.

fn get_source_contents(&self, idx: u32) -> Option<&str>

Looks up the content for a source.

fn get_name_count(&self) -> u32

Returns the number of names in the sourcemap.

fn get_name(&self, idx: u32) -> Option<&str>

Looks up a name for a specific index.