Struct syntax_pos::SpanData
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pub struct SpanData { pub lo: BytePos, pub hi: BytePos, pub ctxt: SyntaxContext, }
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
lo: BytePos
hi: BytePos
ctxt: SyntaxContext
Information about where the macro came from, if this piece of code was created by a macro expansion.
Methods
impl SpanData
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pub fn with_lo(&self, lo: BytePos) -> Span
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pub fn with_hi(&self, hi: BytePos) -> Span
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pub fn with_ctxt(&self, ctxt: SyntaxContext) -> Span
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Trait Implementations
impl Clone for SpanData
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fn clone(&self) -> SpanData
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl Copy for SpanData
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impl Hash for SpanData
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fn hash<__H: Hasher>(&self, __arg_0: &mut __H)
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Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl PartialEq for SpanData
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fn eq(&self, __arg_0: &SpanData) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &SpanData) -> bool
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This method tests for !=
.
impl Eq for SpanData
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impl Ord for SpanData
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fn cmp(&self, __arg_0: &SpanData) -> Ordering
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This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
impl PartialOrd for SpanData
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fn partial_cmp(&self, __arg_0: &SpanData) -> Option<Ordering>
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This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, __arg_0: &SpanData) -> bool
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This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, __arg_0: &SpanData) -> bool
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This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, __arg_0: &SpanData) -> bool
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This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, __arg_0: &SpanData) -> bool
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This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more