Struct syntax_pos::SpanData [] [src]

pub struct SpanData {
    pub lo: BytePos,
    pub hi: BytePos,
    pub ctxt: SyntaxContext,
}
🔬 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?

Spans represent a region of code, used for error reporting. Positions in spans are absolute positions from the beginning of the codemap, not positions relative to FileMaps. Methods on the CodeMap can be used to relate spans back to the original source. You must be careful if the span crosses more than one file - you will not be able to use many of the functions on spans in codemap and you cannot assume that the length of the span = hi - lo; there may be space in the BytePos range between files.

SpanData is public because Span uses a thread-local interner and can't be sent to other threads, but some pieces of performance infra run in a separate thread. Using Span is generally preferred.

Fields

🔬 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)

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)

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?

Information about where the macro came from, if this piece of code was created by a macro expansion.

Trait Implementations

impl Clone for SpanData
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Returns a copy of the value. Read more

1.0.0
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Performs copy-assignment from source. Read more

impl Copy for SpanData
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impl Hash for SpanData
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Feeds this value into the given [Hasher]. Read more

1.3.0
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Feeds a slice of this type into the given [Hasher]. Read more

impl PartialEq for SpanData
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This method tests for self and other values to be equal, and is used by ==. Read more

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This method tests for !=.

impl Eq for SpanData
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impl Ord for SpanData
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This method returns an Ordering between self and other. Read more

1.21.0
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Compares and returns the maximum of two values. Read more

1.21.0
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Compares and returns the minimum of two values. Read more

impl PartialOrd for SpanData
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This method returns an ordering between self and other values if one exists. Read more

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This method tests less than (for self and other) and is used by the < operator. Read more

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This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

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This method tests greater than (for self and other) and is used by the > operator. Read more

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This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl Debug for SpanData
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Formats the value using the given formatter.