Struct SourceMap
pub struct SourceMap { /* private fields */ }
__ecma
and __utils
only.Expand description
The interner for spans.
As most spans are simply stored, we store them as interned form.
- Each ast node only stores pointer to actual data (BytePos).
- The pointers (BytePos) can be converted to file name, line and column using this struct.
§Note
This struct should be shared. swc_common
uses crate::sync::Lrc, which is
std::rc::Rc or std::sync::Arc, depending on the compile option, for this
purpose.
§Note for bundler authors
If you are bundling modules, you should share this struct while parsing modules. Otherwise, you have to implement a code generator which accepts multiple SourceMap.
Implementations§
§impl SourceMap
impl SourceMap
pub fn new(path_mapping: FilePathMapping) -> SourceMap
pub fn with_file_loader( file_loader: Box<dyn FileLoader + Sync + Send>, path_mapping: FilePathMapping, ) -> SourceMap
pub fn path_mapping(&self) -> &FilePathMapping
pub fn file_exists(&self, path: &Path) -> bool
pub fn load_file(&self, path: &Path) -> Result<Arc<SourceFile>, Error>
pub fn files(&self) -> MappedMutexGuard<'_, RawMutex, Vec<Arc<SourceFile>>>
pub fn source_file_by_stable_id( &self, stable_id: StableSourceFileId, ) -> Option<Arc<SourceFile>>
pub fn new_source_file(
&self,
filename: Arc<FileName>,
src: String,
) -> Arc<SourceFile>
pub fn new_source_file( &self, filename: Arc<FileName>, src: String, ) -> Arc<SourceFile>
Creates a new source_file. This does not ensure that only one SourceFile exists per file name.
pub fn new_source_file_from(
&self,
filename: Arc<FileName>,
src: Arc<String>,
) -> Arc<SourceFile>
pub fn new_source_file_from( &self, filename: Arc<FileName>, src: Arc<String>, ) -> Arc<SourceFile>
Creates a new source_file. This does not ensure that only one SourceFile exists per file name.
src
should not have UTF8 BOM
pub fn mk_substr_filename(&self, sp: Span) -> String
pub fn doctest_offset_line(&self, orig: usize) -> usize
pub fn lookup_char_pos(&self, pos: BytePos) -> Loc
pub fn lookup_char_pos(&self, pos: BytePos) -> Loc
Lookup source information about a BytePos
pub fn try_lookup_char_pos(
&self,
pos: BytePos,
) -> Result<Loc, SourceMapLookupError>
pub fn try_lookup_char_pos( &self, pos: BytePos, ) -> Result<Loc, SourceMapLookupError>
Lookup source information about a BytePos
pub fn lookup_line(
&self,
pos: BytePos,
) -> Result<SourceFileAndLine, Arc<SourceFile>>
pub fn lookup_line( &self, pos: BytePos, ) -> Result<SourceFileAndLine, Arc<SourceFile>>
If the relevant source_file is empty, we don’t return a line number.
pub fn lookup_char_pos_adj(&self, pos: BytePos) -> LocWithOpt
pub fn merge_spans(&self, sp_lhs: Span, sp_rhs: Span) -> Option<Span>
pub fn merge_spans(&self, sp_lhs: Span, sp_rhs: Span) -> Option<Span>
Returns Some(span)
, a union of the lhs and rhs span. The lhs must
precede the rhs. If there are gaps between lhs and rhs, the
resulting union will cross these gaps. For this to work, the spans
have to be:
- the ctxt of both spans much match
- the lhs span needs to end on the same line the rhs span begins
- the lhs span must start at or before the rhs span
pub fn span_to_string(&self, sp: Span) -> String
pub fn span_to_filename(&self, sp: Span) -> Arc<FileName>
pub fn span_to_unmapped_path(&self, sp: Span) -> Arc<FileName>
pub fn is_multiline(&self, sp: Span) -> bool
pub fn span_to_lines(&self, sp: Span) -> Result<FileLines, Box<SpanLinesError>>
pub fn with_snippet_of_span<F, Ret>(
&self,
sp: Span,
op: F,
) -> Result<Ret, Box<SpanSnippetError>>
pub fn with_snippet_of_span<F, Ret>( &self, sp: Span, op: F, ) -> Result<Ret, Box<SpanSnippetError>>
Calls op
with the source code located at sp
.
pub fn span_to_margin(&self, sp: Span) -> Option<usize>
pub fn with_span_to_prev_source<F, Ret>(
&self,
sp: Span,
op: F,
) -> Result<Ret, Box<SpanSnippetError>>
pub fn with_span_to_prev_source<F, Ret>( &self, sp: Span, op: F, ) -> Result<Ret, Box<SpanSnippetError>>
Calls the given closure with the source snippet before the given Span
pub fn span_to_prev_source(
&self,
sp: Span,
) -> Result<String, Box<SpanSnippetError>>
pub fn span_to_prev_source( &self, sp: Span, ) -> Result<String, Box<SpanSnippetError>>
Return the source snippet as String
before the given Span
pub fn with_span_to_next_source<F, Ret>(
&self,
sp: Span,
op: F,
) -> Result<Ret, Box<SpanSnippetError>>
pub fn with_span_to_next_source<F, Ret>( &self, sp: Span, op: F, ) -> Result<Ret, Box<SpanSnippetError>>
Calls the given closure with the source snippet after the given Span
pub fn span_to_next_source(
&self,
sp: Span,
) -> Result<String, Box<SpanSnippetError>>
pub fn span_to_next_source( &self, sp: Span, ) -> Result<String, Box<SpanSnippetError>>
Return the source snippet as String
after the given Span
pub fn span_extend_to_prev_char(&self, sp: Span, c: char) -> Span
pub fn span_extend_to_prev_char(&self, sp: Span, c: char) -> Span
Extend the given Span
to just after the previous occurrence of c
.
Return the same span if no character could be found or if an error
occurred while retrieving the code snippet.
pub fn span_extend_to_prev_str(
&self,
sp: Span,
pat: &str,
accept_newlines: bool,
) -> Span
pub fn span_extend_to_prev_str( &self, sp: Span, pat: &str, accept_newlines: bool, ) -> Span
Extend the given Span
to just after the previous occurrence of pat
when surrounded by whitespace. Return the same span if no character
could be found or if an error occurred while retrieving the code
snippet.
pub fn span_extend_to_next_char(&self, sp: Span, c: char) -> Span
pub fn span_extend_to_next_char(&self, sp: Span, c: char) -> Span
Extend the given Span
to just after the next occurrence of c
.
Return the same span if no character could be found or if an error
occurred while retrieving the code snippet.
pub fn span_extend_to_next_str(
&self,
sp: Span,
pat: &str,
accept_newlines: bool,
) -> Span
pub fn span_extend_to_next_str( &self, sp: Span, pat: &str, accept_newlines: bool, ) -> Span
Extend the given Span
to just after the next occurrence of pat
when surrounded by whitespace. Return the same span if no character
could be found or if an error occurred while retrieving the code
snippet.
pub fn span_until_char(&self, sp: Span, c: char) -> Span
pub fn span_until_char(&self, sp: Span, c: char) -> Span
Given a Span
, try to get a shorter span ending before the first
occurrence of c
char
§Notes
This method returns a dummy span for a dummy span.
pub fn span_through_char(&self, sp: Span, c: char) -> Span
pub fn span_through_char(&self, sp: Span, c: char) -> Span
Given a Span
, try to get a shorter span ending just after the first
occurrence of char
c
.
§Notes
This method returns a dummy span for a dummy span.
pub fn span_until_non_whitespace(&self, sp: Span) -> Span
pub fn span_until_non_whitespace(&self, sp: Span) -> Span
Given a Span
, get a new Span
covering the first token and all its
trailing whitespace or the original Span
.
If sp
points to "let mut x"
, then a span pointing at "let "
will
be returned.
pub fn span_until_whitespace(&self, sp: Span) -> Span
pub fn span_until_whitespace(&self, sp: Span) -> Span
Given a Span
, get a new Span
covering the first token without its
trailing whitespace or the original Span
in case of error.
If sp
points to "let mut x"
, then a span pointing at "let"
will be
returned.
pub fn span_take_while<P>(&self, sp: Span, predicate: P) -> Span
pub fn span_take_while<P>(&self, sp: Span, predicate: P) -> Span
Given a Span
, get a shorter one until predicate
yields false.
pub fn def_span(&self, sp: Span) -> Span
pub fn start_point(&self, sp: Span) -> Span
pub fn start_point(&self, sp: Span) -> Span
Returns a new span representing just the start-point of this span
pub fn end_point(&self, sp: Span) -> Span
pub fn end_point(&self, sp: Span) -> Span
Returns a new span representing just the end-point of this span
pub fn next_point(&self, sp: Span) -> Span
pub fn next_point(&self, sp: Span) -> Span
Returns a new span representing the next character after the end-point of this span
pub fn get_source_file(&self, filename: &FileName) -> Option<Arc<SourceFile>>
pub fn lookup_byte_offset(&self, bpos: BytePos) -> SourceFileAndBytePos
pub fn lookup_byte_offset(&self, bpos: BytePos) -> SourceFileAndBytePos
For a global BytePos compute the local offset within the containing SourceFile
pub fn try_lookup_byte_offset(
&self,
bpos: BytePos,
) -> Result<SourceFileAndBytePos, SourceMapLookupError>
pub fn try_lookup_byte_offset( &self, bpos: BytePos, ) -> Result<SourceFileAndBytePos, SourceMapLookupError>
For a global BytePos compute the local offset within the containing SourceFile
pub fn span_to_char_offset(&self, file: &SourceFile, span: Span) -> (u32, u32)
pub fn span_to_char_offset(&self, file: &SourceFile, span: Span) -> (u32, u32)
Converts a span of absolute BytePos to a CharPos relative to the source_file.
pub fn count_lines(&self) -> usize
pub fn generate_fn_name_span(&self, span: Span) -> Option<Span>
pub fn generate_local_type_param_snippet(
&self,
span: Span,
) -> Option<(Span, String)>
pub fn generate_local_type_param_snippet( &self, span: Span, ) -> Option<(Span, String)>
Take the span of a type parameter in a function signature and try to generate a span for the function name (with generics) and a new snippet for this span with the pointed type parameter as a new local type parameter.
For instance:
// Given span
fn my_function(param: T)
// ^ Original span
// Result
fn my_function(param: T)
// ^^^^^^^^^^^ Generated span with snippet `my_function<T>`
Attention: The method used is very fragile since it essentially duplicates the work of the parser. If you need to use this function or something similar, please consider updating the source_map functions and this function to something more robust.
pub fn build_source_map(&self, mappings: &[(BytePos, LineCol)]) -> SourceMap
pub fn build_source_map_from(
&self,
mappings: &[(BytePos, LineCol)],
orig: Option<&SourceMap>,
) -> SourceMap
pub fn build_source_map_from( &self, mappings: &[(BytePos, LineCol)], orig: Option<&SourceMap>, ) -> SourceMap
Creates a .map
file.
pub fn build_source_map_with_config( &self, mappings: &[(BytePos, LineCol)], orig: Option<&SourceMap>, config: impl SourceMapGenConfig, ) -> SourceMap
Trait Implementations§
§impl SourceMapper for SourceMap
impl SourceMapper for SourceMap
§fn span_to_snippet(&self, sp: Span) -> Result<String, Box<SpanSnippetError>>
fn span_to_snippet(&self, sp: Span) -> Result<String, Box<SpanSnippetError>>
Return the source snippet as String
corresponding to the given Span
fn lookup_char_pos(&self, pos: BytePos) -> Loc
fn span_to_lines(&self, sp: Span) -> Result<FileLines, Box<SpanLinesError>>
fn span_to_string(&self, sp: Span) -> String
fn span_to_filename(&self, sp: Span) -> Arc<FileName>
fn merge_spans(&self, sp_lhs: Span, sp_rhs: Span) -> Option<Span>
fn call_span_if_macro(&self, sp: Span) -> Span
fn doctest_offset_line(&self, line: usize) -> usize
§impl SourceMapperExt for SourceMap
impl SourceMapperExt for SourceMap
fn get_code_map(&self) -> &dyn SourceMapper
fn is_on_same_line(&self, _lo: BytePos, _hi: BytePos) -> bool
fn should_write_separating_line_terminator( &self, prev: Option<Span>, next: Option<Span>, format: ListFormat, ) -> bool
fn should_write_leading_line_terminator( &self, parent_node: Span, first_child: Option<Span>, format: ListFormat, ) -> bool
fn should_write_closing_line_terminator( &self, parent_node: Span, last_child: Option<Span>, format: ListFormat, ) -> bool
Auto Trait Implementations§
impl !Freeze for SourceMap
impl !RefUnwindSafe for SourceMap
impl Send for SourceMap
impl Sync for SourceMap
impl Unpin for SourceMap
impl !UnwindSafe for SourceMap
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