[−][src]Struct syntax::source_map::SourceMap
Methods
impl SourceMap
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pub fn new(path_mapping: FilePathMapping) -> SourceMap
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pub fn with_file_loader(
file_loader: Box<dyn FileLoader + Sync + Send>,
path_mapping: FilePathMapping
) -> SourceMap
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file_loader: Box<dyn FileLoader + Sync + Send>,
path_mapping: FilePathMapping
) -> SourceMap
pub fn path_mapping(&self) -> &FilePathMapping
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pub fn file_exists(&self, path: &Path) -> bool
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pub fn load_file(&self, path: &Path) -> Result<Lrc<SourceFile>>
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pub fn files(&self) -> MappedLockGuard<Vec<Lrc<SourceFile>>>
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pub fn source_file_by_stable_id(
&self,
stable_id: StableSourceFileId
) -> Option<Lrc<SourceFile>>
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&self,
stable_id: StableSourceFileId
) -> Option<Lrc<SourceFile>>
pub fn new_source_file(
&self,
filename: FileName,
src: String
) -> Lrc<SourceFile>
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&self,
filename: FileName,
src: String
) -> Lrc<SourceFile>
Creates a new source_file. If a file already exists in the source_map with the same id, that file is returned unmodified
pub fn new_imported_source_file(
&self,
filename: FileName,
name_was_remapped: bool,
crate_of_origin: u32,
src_hash: u128,
name_hash: u128,
source_len: usize,
file_local_lines: Vec<BytePos>,
file_local_multibyte_chars: Vec<MultiByteChar>,
file_local_non_narrow_chars: Vec<NonNarrowChar>
) -> Lrc<SourceFile>
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&self,
filename: FileName,
name_was_remapped: bool,
crate_of_origin: u32,
src_hash: u128,
name_hash: u128,
source_len: usize,
file_local_lines: Vec<BytePos>,
file_local_multibyte_chars: Vec<MultiByteChar>,
file_local_non_narrow_chars: Vec<NonNarrowChar>
) -> Lrc<SourceFile>
Allocates a new SourceFile representing a source file from an external crate. The source code of such an "imported source_file" is not available, but we still know enough to generate accurate debuginfo location information for things inlined from other crates.
pub fn mk_substr_filename(&self, sp: Span) -> String
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pub fn doctest_offset_line(&self, file: &FileName, orig: usize) -> usize
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pub fn lookup_char_pos(&self, pos: BytePos) -> Loc
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Lookup source information about a BytePos
pub fn lookup_line(
&self,
pos: BytePos
) -> Result<SourceFileAndLine, Lrc<SourceFile>>
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&self,
pos: BytePos
) -> Result<SourceFileAndLine, Lrc<SourceFile>>
pub fn merge_spans(&self, sp_lhs: Span, sp_rhs: Span) -> Option<Span>
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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
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pub fn span_to_filename(&self, sp: Span) -> FileName
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pub fn span_to_unmapped_path(&self, sp: Span) -> FileName
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pub fn is_multiline(&self, sp: Span) -> bool
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pub fn span_to_lines(&self, sp: Span) -> FileLinesResult
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pub fn span_to_snippet(&self, sp: Span) -> Result<String, SpanSnippetError>
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Returns the source snippet as String
corresponding to the given Span
pub fn span_to_margin(&self, sp: Span) -> Option<usize>
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pub fn span_to_prev_source(&self, sp: Span) -> Result<String, SpanSnippetError>
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Returns the source snippet as String
before the given Span
pub fn span_extend_to_prev_char(&self, sp: Span, c: char) -> Span
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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
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&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_until_char(&self, sp: Span, c: char) -> Span
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Given a Span
, try to get a shorter span ending before the first occurrence of c
char
pub fn span_through_char(&self, sp: Span, c: char) -> Span
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Given a Span
, try to get a shorter span ending just after the first occurrence of char
c
.
pub fn span_until_non_whitespace(&self, sp: Span) -> Span
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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
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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 where
P: for<'r> FnMut(&'r char) -> bool,
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P: for<'r> FnMut(&'r char) -> bool,
Given a Span
, get a shorter one until predicate
yields false.
pub fn def_span(&self, sp: Span) -> Span
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pub fn start_point(&self, sp: Span) -> Span
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Returns a new span representing just the start-point of this span
pub fn end_point(&self, sp: Span) -> Span
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Returns a new span representing just the end-point of this span
pub fn next_point(&self, sp: Span) -> Span
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Returns a new span representing the next character after the end-point of this span
pub fn get_source_file(&self, filename: &FileName) -> Option<Lrc<SourceFile>>
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pub fn lookup_byte_offset(&self, bpos: BytePos) -> SourceFileAndBytePos
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For a global BytePos compute the local offset within the containing SourceFile
pub fn bytepos_to_file_charpos(&self, bpos: BytePos) -> CharPos
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Converts an absolute BytePos to a CharPos relative to the source_file.
pub fn lookup_source_file_idx(&self, pos: BytePos) -> usize
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pub fn count_lines(&self) -> usize
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pub fn generate_fn_name_span(&self, span: Span) -> Option<Span>
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pub fn generate_local_type_param_snippet(
&self,
span: Span
) -> Option<(Span, String)>
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&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.
Trait Implementations
impl SourceMapper for SourceMap
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fn lookup_char_pos(&self, pos: BytePos) -> Loc
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fn span_to_lines(&self, sp: Span) -> FileLinesResult
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fn span_to_string(&self, sp: Span) -> String
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fn span_to_filename(&self, sp: Span) -> FileName
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fn merge_spans(&self, sp_lhs: Span, sp_rhs: Span) -> Option<Span>
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fn call_span_if_macro(&self, sp: Span) -> Span
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fn ensure_source_file_source_present(
&self,
source_file: Lrc<SourceFile>
) -> bool
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&self,
source_file: Lrc<SourceFile>
) -> bool
fn doctest_offset_line(&self, file: &FileName, line: usize) -> usize
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Auto Trait Implementations
impl !Sync for SourceMap
impl Unpin for SourceMap
impl !Send for SourceMap
impl !UnwindSafe for SourceMap
impl !RefUnwindSafe for SourceMap
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<E> SpecializationError for E
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default fn not_found<S, T>(
trait_name: &'static str,
method_name: &'static str
) -> E where
T: ?Sized,
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trait_name: &'static str,
method_name: &'static str
) -> E where
T: ?Sized,