Struct StrView 

pub struct StrView<'a> { /* private fields */ }

Truly zero-copy string reference.

This is just a pointer and length (16 bytes on 64-bit systems), making it extremely cheap to copy and pass around. Unlike &str, it can be stored in structs without lifetime issues when the underlying buffer is known to outlive the view.

Safety

The underlying data must:

• Be valid UTF-8
• Remain valid for the lifetime 'a
• Not be modified while the view exists

Implementations

impl<'a> StrView<'a>

pub const fn new(s: &'a str) -> Self

Create a new string view from a string slice.

pub const fn empty() -> Self

Create an empty string view.

pub const unsafe fn from_raw_parts(ptr: *const u8, len: usize) -> Self

Create a string view from raw parts.

Safety

The caller must ensure:

• ptr points to valid UTF-8 data
• The data is at least len bytes
• The data remains valid for lifetime 'a

pub fn as_str(&self) -> &'a str

Get the string slice this view represents.

pub fn as_bytes(&self) -> &'a [u8]

Get the underlying bytes.

pub const fn len(&self) -> usize

Get the length in bytes.

pub const fn is_empty(&self) -> bool

Check if the view is empty.

pub fn slice(&self, range: Range<usize>) -> StrView<'a>

Get a subview by byte range.

Panics

Panics if:

• The range is out of bounds
• The range doesn’t lie on UTF-8 character boundaries

pub fn try_slice(&self, range: Range<usize>) -> Option<StrView<'a>>

Try to get a subview by byte range.

Returns None if the range is invalid or doesn’t lie on UTF-8 character boundaries.

pub unsafe fn slice_unchecked(&self, range: Range<usize>) -> StrView<'a>

Get a subview by byte range without bounds checking.

Safety

The range must be within bounds and on UTF-8 character boundaries.

pub fn split_once(&self, c: char) -> Option<(StrView<'a>, StrView<'a>)>

Split the view at the first occurrence of a character.

pub fn strip_prefix(&self, prefix: &str) -> Option<StrView<'a>>

Strip a prefix from the view.

pub fn strip_suffix(&self, suffix: &str) -> Option<StrView<'a>>

Strip a suffix from the view.

pub fn trim(&self) -> StrView<'a>

Trim whitespace from both ends.

pub fn starts_with(&self, prefix: &str) -> bool

Check if the view starts with a prefix.

pub fn ends_with(&self, suffix: &str) -> bool

Check if the view ends with a suffix.

pub fn contains(&self, pattern: &str) -> bool

Check if the view contains a pattern.

pub fn find(&self, pattern: &str) -> Option<usize>

Find the first occurrence of a pattern.

pub const fn as_ptr(&self) -> *const u8

Get the raw pointer to the string data.

impl<'a> StrView<'a>

pub fn lines(&self) -> Lines<'a>

Iterate over lines in the string view.

impl<'a> StrView<'a>

pub fn validate<V: Validate>(&self, validator: &V) -> Score<'static>

Validate this string view with the given validator.

Trait Implementations

impl<'a> AsRef<[u8]> for StrView<'a>

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl<'a> AsRef<str> for StrView<'a>

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl<'a> Clone for StrView<'a>

fn clone(&self) -> StrView<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for StrView<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Default for StrView<'a>

fn default() -> Self

Returns the “default value” for a type.

impl<'a> Display for StrView<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> From<&'a String> for StrView<'a>

fn from(s: &'a String) -> Self

Converts to this type from the input type.

impl<'a> From<&'a str> for StrView<'a>

fn from(s: &'a str) -> Self

Converts to this type from the input type.

impl<'a> Hash for StrView<'a>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'a> Ord for StrView<'a>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<'a> PartialEq<&str> for StrView<'a>

fn eq(&self, other: &&str) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> PartialEq<StrView<'a>> for str

fn eq(&self, other: &StrView<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> PartialEq<str> for StrView<'a>

fn eq(&self, other: &str) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> PartialEq for StrView<'a>

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> PartialOrd for StrView<'a>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

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

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a> Copy for StrView<'a>

impl<'a> Eq for StrView<'a>

impl<'a> Send for StrView<'a>

impl<'a> Sync for StrView<'a>