Struct swc_js_sourcemap::SourceMapIndex

pub struct SourceMapIndex { /* fields omitted */ }

Represents a sourcemap index in memory

Methods

impl SourceMapIndex

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

Creates a sourcemap index 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 a regular sourcemap is encountered an error is returned.

pub fn to_writer<W: Write>(&self, w: W) -> Result<()>

Writes a sourcemap index into a writer.

pub fn from_slice(slice: &[u8]) -> Result<SourceMapIndex>

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

pub fn new(
    file: Option<String>,
    sections: Vec<SourceMapSection>
) -> SourceMapIndex

Constructs a new sourcemap index from raw components.

• file: an optional filename of the index
• sections: a vector of source map index sections

pub fn new_ram_bundle_compatible(
    file: Option<String>,
    sections: Vec<SourceMapSection>,
    x_facebook_offsets: Option<Vec<Option<u32>>>,
    x_metro_module_paths: Option<Vec<String>>
) -> SourceMapIndex

Constructs a new sourcemap index from raw components including the facebook RAM bundle extensions.

• file: an optional filename of the index
• sections: a vector of source map index sections
• x_facebook_offsets: a vector of facebook offsets
• x_metro_module_paths: a vector of metro module paths

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

Returns the embedded filename in case there is one.

pub fn set_file(&mut self, value: Option<&str>)

Sets a new value for the file.

pub fn get_section_count(&self) -> u32

Returns the number of sections in this index

pub fn get_section(&self, idx: u32) -> Option<&SourceMapSection>

Looks up a single section and returns it

pub fn get_section_mut(&mut self, idx: u32) -> Option<&mut SourceMapSection>

Looks up a single section and returns it as a mutable ref

Important traits for SourceMapSectionIter<'a>

impl<'a> Iterator for SourceMapSectionIter<'a> type Item = &'a SourceMapSection;

pub fn sections(&self) -> SourceMapSectionIter

Iterates over all sections

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

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

This requires that the referenced sourcemaps are actually loaded. If a sourcemap is encountered that is not embedded but just externally referenced it is silently skipped.

pub fn flatten(&self) -> Result<SourceMap>

Flattens an indexed sourcemap into a regular one. This requires that all referenced sourcemaps are attached.

pub fn flatten_and_rewrite(self, options: &RewriteOptions) -> Result<SourceMap>

Flattens an indexed sourcemap into a regular one and automatically rewrites it. This is more useful than plain flattening as this will cause the sourcemap to be properly deduplicated.

pub fn is_for_ram_bundle(&self) -> bool

Returns true if this sourcemap is for a RAM bundle.

pub fn x_facebook_offsets(&self) -> Option<&[Option<u32>]>

Returns embeded x-facebook-offset values.

pub fn x_metro_module_paths(&self) -> Option<&[String]>

Returns embedded metro module paths.