pub struct Span {
    pub lo: BytePos,
    pub hi: BytePos,
    pub ctxt: SyntaxContext,
}
Expand description

Spans represent a region of code, used for error reporting. Positions in spans are absolute positions from the beginning of the source_map, not positions relative to SourceFiles. Methods on the SourceMap 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 source_map and you cannot assume that the length of the span = hi - lo; there may be space in the BytePos range between files.

Fields

lo: BytePoshi: BytePosctxt: SyntaxContext

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

Implementations

Returns true if this is a dummy span with any hygienic context.

Returns a new span representing an empty span at the beginning of this span

Returns a new span representing an empty span at the end of this span

Returns self if self is not the dummy span, and other otherwise.

Return true if self fully encloses other.

Return true if the spans are equal with regards to the source text.

Use this instead of == when either span could be generated code, and you only care that they point to the same bytes of source text.

Returns Some(span), where the start is trimmed by the end of other

Return a Span that would enclose both self and end.

Return a Span between the end of self to the beginning of end.

Return a Span between the beginning of self to the beginning of end.

Returns true if self is marked with mark.

Panics if mark is not a valid mark.

Trait Implementations

The archived representation of this type. Read more

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type. Read more

Creates the archived version of this value at the given position and writes it to the given output. Read more

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Returns the “default value” for a type. Read more

Deserialize this value from the given Serde deserializer. Read more

Deserializes using the given deserializer

Always returns true

Performs the conversion.

Feeds this value into the given Hasher. Read more

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

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

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

This method tests for !=.

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

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

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

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

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

Serialize this value into the given Serde serializer. Read more

Writes the dependencies for the object and returns a resolver that can create the archived type. Read more

Get span of self.

Create a dummy value of this type.

Mutate self using op, which accepts owned data.

Always returns true

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

The archived version of the pointer metadata for this type.

Converts some archived metadata to the pointer metadata for itself.

The archived counterpart of this type. Unlike Archive, it may be unsized. Read more

The resolver for the metadata of this type. Read more

Creates the archived version of the metadata for this value at the given position and writes it to the given output. Read more

Resolves a relative pointer to this value with the given from and to and writes it to the given output. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Deserializes using the given deserializer

Performs the conversion.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Performs the conversion.

The type for metadata in pointers and references to Self.

Writes the object and returns the position of the archived type.

Serializes the metadata for the given type.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

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

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more