Struct syntax::codemap::CodeMap[][src]

pub struct CodeMap {
    pub(super) files: Lock<CodeMapFiles>,
    file_loader: Box<FileLoader + Sync + Send>,
    path_mapping: FilePathMapping,
    doctest_offset: Option<(FileName, isize)>,
}
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Fields

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In case we are in a doctest, replace all file names with the PathBuf, and add the given offsets to the line info

Methods

impl CodeMap
[src]

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Creates a new filemap without setting its line information. If you don't intend to set the line information yourself, you should use new_filemap_and_lines. This does not ensure that only one FileMap exists per file name.

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Creates a new filemap and sets its line information. This does not ensure that only one FileMap exists per file name.

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Allocates a new FileMap representing a source file from an external crate. The source code of such an "imported filemap" is not available, but we still know enough to generate accurate debuginfo location information for things inlined from other crates.

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Lookup source information about a BytePos

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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

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Extract the source surrounding the given Span using the extract_source function. The extract function takes three arguments: a string slice containing the source, an index in the slice for the beginning of the span and an index in the slice for the end of the span.

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Return the source snippet as String corresponding to the given Span

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Return the source snippet as String before the given 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.

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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.

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Given a Span, try to get a shorter span ending before the first occurrence of c char

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Given a Span, try to get a shorter span ending just after the first occurrence of char c.

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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.

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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.

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Given a Span, get a shorter one until predicate yields false.

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Returns a new span representing just the end-point of this span

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Returns a new span representing the next character after the end-point of this span

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Finds the width of a character, either before or after the provided span.

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For a global BytePos compute the local offset within the containing FileMap

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Converts an absolute BytePos to a CharPos relative to the filemap.

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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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:

This example is not tested
// 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 codemap functions and this function to something more robust.

Trait Implementations

impl CodeMapper for CodeMap
[src]

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Auto Trait Implementations

impl !Send for CodeMap

impl !Sync for CodeMap