/// Construct a new empty source map.
Construct a new empty source map.
Construct a new empty source map .
pub fn new() -> SourceMap {
        SourceMap {
            source_files: vec![],
            filename_map: HashMap::new(),
        }
    }
pub fn new ( ) -> SourceMap { SourceMap { source_files : vec ! [ ] , filename_map : HashMap :: new ( ) , } }
Construct a new empty source map.
Construct a new empty source map .