pub enum Utf8Sequence {
    One(Utf8Range),
    Two([Utf8Range; 2]),
    Three([Utf8Range; 3]),
    Four([Utf8Range; 4]),
}
Expand description

Utf8Sequence represents a sequence of byte ranges.

To match a Utf8Sequence, a candidate byte sequence must match each successive range.

For example, if there are two ranges, [C2-DF][80-BF], then the byte sequence \xDD\x61 would not match because 0x61 < 0x80.

Variants

One(Utf8Range)

One byte range.

Two([Utf8Range; 2])

Two successive byte ranges.

Three([Utf8Range; 3])

Three successive byte ranges.

Four([Utf8Range; 4])

Four successive byte ranges.

Implementations

Returns the underlying sequence of byte ranges as a slice.

Returns the number of byte ranges in this sequence.

The length is guaranteed to be in the closed interval [1, 4].

Reverses the ranges in this sequence.

For example, if this corresponds to the following sequence:

[D0-D3][80-BF]

Then after reversal, it will be

[80-BF][D0-D3]

This is useful when one is constructing a UTF-8 automaton to match character classes in reverse.

Returns true if and only if a prefix of bytes matches this sequence of byte ranges.

Trait Implementations

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more
Which kind of iterator are we turning this into?
The type of the elements being iterated over.
Creates an iterator from a value. 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 !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more
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

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
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.