Literal in regex_syntax::hir::literal - Rust (original) (raw)
pub struct Literal { /* private fields */ }Expand description
A single literal extracted from an Hir expression.
A literal is composed of two things:
- A sequence of bytes. No guarantees with respect to UTF-8 are provided. In particular, even if the regex a literal is extracted from is UTF-8, the literal extracted may not be valid UTF-8. (For example, if an Extractorlimit resulted in trimming a literal in a way that splits a codepoint.)
- Whether the literal is “exact” or not. An “exact” literal means that it has not been trimmed, and may continue to be extended. If a literal is “exact” after visiting the entire
Hirexpression, then this implies that the literal leads to a match state. (Although it doesn’t necessarily imply all occurrences of the literal correspond to a match of the regex, since literal extraction ignores look-around assertions.)
Returns a new exact literal containing the bytes given.
Returns a new inexact literal containing the bytes given.
Returns the bytes in this literal.
Yields ownership of the bytes inside this literal.
Note that this throws away whether the literal is “exact” or not.
Returns the length of this literal in bytes.
Returns true if and only if this literal has zero bytes.
Returns true if and only if this literal is exact.
Marks this literal as inexact.
Inexact literals can never be extended. For example,Seq::cross_forward will not extend inexact literals.
Reverse the bytes in this literal.
Extend this literal with the literal given.
If this literal is inexact, then this is a no-op.
Trims this literal such that only the first len bytes remain. If this literal has fewer than len bytes, then it remains unchanged. Otherwise, the literal is marked as inexact.
Trims this literal such that only the last len bytes remain. If this literal has fewer than len bytes, then it remains unchanged. Otherwise, the literal is marked as inexact.
Converts this type into a shared reference of the (usually inferred) input type.
Converts to this type from the input type.
Converts to this type from the input type.
Tests for self and other values to be equal, and is used by ==.
Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method returns an ordering between self and other values if one exists. Read more
Tests less than (for self and other) and is used by the < operator. Read more
Tests less than or equal to (for self and other) and is used by the<= operator. Read more
Tests greater than (for self and other) and is used by the >operator. Read more
Tests greater than or equal to (for self and other) and is used by the >= operator. Read more