Struct rocket::http::uri::Reference

pub struct Reference<'a> { /* private fields */ }
Expand description

A URI-reference with optional scheme, authority, relative path, query, and fragment parts.

§Structure

The following diagram illustrates the syntactic structure of a URI reference with all optional parts:

 http://user:pass@domain.com:4444/foo/bar?some=query#and-fragment
 |--|  |------------------------||------| |--------| |----------|
scheme          authority          path      query     fragment

All parts are optional. When a scheme and authority are not present, the path may be relative: foo/bar?baz#cat.

§Conversion

All other URI types (Origin, Absolute, and so on) are valid URI references. As such, conversion between the types is lossless:

use rocket::http::uri::Reference;

let absolute = uri!("http://rocket.rs");
let reference: Reference = absolute.into();
assert_eq!(reference.scheme(), Some("http"));
assert_eq!(reference.authority().unwrap().host(), "rocket.rs");

let origin = uri!("/foo/bar");
let reference: Reference = origin.into();
assert_eq!(reference.path(), "/foo/bar");

Note that uri!() macro always prefers the more specific URI variant to Reference when possible, as is demonstrated above for absolute and origin.

§(De)serialization

Reference is both Serialize and Deserialize:

use serde::{Serialize, Deserialize};
use rocket::http::uri::Reference;

#[derive(Deserialize, Serialize)]
struct UriOwned {
    uri: Reference<'static>,
}

#[derive(Deserialize, Serialize)]
struct UriBorrowed<'a> {
    uri: Reference<'a>,
}

Implementations§

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impl<'a> Reference<'a>

pub fn parse(string: &'a str) -> Result<Reference<'a>, Error<'a>>

Parses the string string into an Reference. Parsing will never allocate. Returns an Error if string is not a valid origin URI.

§Example
use rocket::http::uri::Reference;

// Parse a valid URI reference.
let uri = Reference::parse("/a/b/c?query").expect("valid URI");
assert_eq!(uri.path(), "/a/b/c");
assert_eq!(uri.query().unwrap(), "query");

// Invalid URIs fail to parse.
Reference::parse("foo bar").expect_err("invalid URI");

// Prefer to use `uri!()` when the input is statically known:
let uri = uri!("/a/b/c?query#fragment");
assert_eq!(uri.path(), "/a/b/c");
assert_eq!(uri.query().unwrap(), "query");
assert_eq!(uri.fragment().unwrap(), "fragment");

pub fn parse_owned(string: String) -> Result<Reference<'static>, Error<'static>>

Parses the string string into a Reference. Allocates minimally on success and error.

This method should be used instead of Reference::parse() when the source URI is already a String. Returns an Error if string is not a valid URI reference.

§Example
use rocket::http::uri::Reference;

let source = format!("/foo?{}#3", 2);
let uri = Reference::parse_owned(source).unwrap();
assert_eq!(uri.path(), "/foo");
assert_eq!(uri.query().unwrap(), "2");
assert_eq!(uri.fragment().unwrap(), "3");

pub fn scheme(&self) -> Option<&str>

Returns the scheme. If Some, is non-empty.

§Example
let uri = uri!("http://rocket.rs?foo#bar");
assert_eq!(uri.scheme(), Some("http"));

let uri = uri!("ftp:/?foo#bar");
assert_eq!(uri.scheme(), Some("ftp"));

let uri = uri!("?foo#bar");
assert_eq!(uri.scheme(), None);

pub fn authority(&self) -> Option<&Authority<'a>>

Returns the authority part.

§Example
let uri = uri!("http://rocket.rs:4444?foo#bar");
let auth = uri!("rocket.rs:4444");
assert_eq!(uri.authority().unwrap(), &auth);

let uri = uri!("?foo#bar");
assert_eq!(uri.authority(), None);

pub fn path(&self) -> Path<'_>

Returns the path part. May be empty.

§Example
let uri = uri!("http://rocket.rs/guide?foo#bar");
assert_eq!(uri.path(), "/guide");

pub fn query(&self) -> Option<Query<'_>>

Returns the query part. May be empty.

§Example
let uri = uri!("http://rocket.rs/guide?foo#bar");
assert_eq!(uri.query().unwrap(), "foo");

let uri = uri!("http://rocket.rs/guide?q=bar");
assert_eq!(uri.query().unwrap(), "q=bar");

// Empty query parts are normalized away by `uri!()`.
let uri = uri!("http://rocket.rs/guide?#bar");
assert!(uri.query().is_none());

pub fn fragment(&self) -> Option<&RawStr>

Returns the fragment part, if any.

§Example
let uri = uri!("http://rocket.rs/guide?foo#bar");
assert_eq!(uri.fragment().unwrap(), "bar");

// Fragment parts aren't normalized away, unlike query parts.
let uri = uri!("http://rocket.rs/guide?foo#");
assert_eq!(uri.fragment().unwrap(), "");

pub fn is_normalized(&self) -> bool

Returns true if self is normalized. Otherwise, returns false.

Normalization for a URI reference is equivalent to normalization for an absolute URI. See Absolute for more information on what it means for an absolute URI to be normalized.

§Example
use rocket::http::uri::Reference;

assert!(Reference::parse("foo/bar").unwrap().is_normalized());
assert!(Reference::parse("foo/bar#").unwrap().is_normalized());
assert!(Reference::parse("http://").unwrap().is_normalized());
assert!(Reference::parse("http://foo.rs/foo/bar").unwrap().is_normalized());
assert!(Reference::parse("foo:bar#baz").unwrap().is_normalized());
assert!(Reference::parse("http://rocket.rs#foo").unwrap().is_normalized());

assert!(!Reference::parse("http://?").unwrap().is_normalized());
assert!(!Reference::parse("git://rocket.rs/").unwrap().is_normalized());
assert!(!Reference::parse("http:/foo//bar").unwrap().is_normalized());
assert!(!Reference::parse("foo:bar?baz&&bop#c").unwrap().is_normalized());
assert!(!Reference::parse("http://rocket.rs?#foo").unwrap().is_normalized());

// Recall that `uri!()` normalizes static input.
assert!(uri!("http://rocket.rs#foo").is_normalized());
assert!(uri!("http://rocket.rs///foo////bar#cat").is_normalized());

pub fn normalize(&mut self)

Normalizes self in-place. Does nothing if self is already normalized.

§Example
use rocket::http::uri::Reference;

let mut uri = Reference::parse("git://rocket.rs/").unwrap();
assert!(!uri.is_normalized());
uri.normalize();
assert!(uri.is_normalized());

let mut uri = Reference::parse("http:/foo//bar?baz&&#cat").unwrap();
assert!(!uri.is_normalized());
uri.normalize();
assert!(uri.is_normalized());

let mut uri = Reference::parse("foo:bar?baz&&bop").unwrap();
assert!(!uri.is_normalized());
uri.normalize();
assert!(uri.is_normalized());

pub fn into_normalized(self) -> Reference<'a>

Normalizes self. This is a no-op if self is already normalized.

§Example
use rocket::http::uri::Reference;

let mut uri = Reference::parse("git://rocket.rs/").unwrap();
assert!(!uri.is_normalized());
assert!(uri.into_normalized().is_normalized());

let mut uri = Reference::parse("http:/foo//bar?baz&&#cat").unwrap();
assert!(!uri.is_normalized());
assert!(uri.into_normalized().is_normalized());

let mut uri = Reference::parse("foo:bar?baz&&bop").unwrap();
assert!(!uri.is_normalized());
assert!(uri.into_normalized().is_normalized());

Trait Implementations§

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impl<'a> Clone for Reference<'a>

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a> Debug for Reference<'a>

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

Formats the value using the given formatter. Read more
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impl<'a, 'de> Deserialize<'de> for Reference<'a>

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fn deserialize<D>( deserializer: D, ) -> Result<Reference<'a>, <D as Deserializer<'de>>::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Display for Reference<'_>

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

Formats the value using the given formatter. Read more
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impl<'a> From<Absolute<'a>> for Reference<'a>

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fn from(absolute: Absolute<'a>) -> Reference<'a>

Converts to this type from the input type.
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impl From<Asterisk> for Reference<'_>

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fn from(_: Asterisk) -> Reference<'_>

Converts to this type from the input type.
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impl<'a> From<Authority<'a>> for Reference<'a>

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fn from(authority: Authority<'a>) -> Reference<'a>

Converts to this type from the input type.
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impl<'a> From<Origin<'a>> for Reference<'a>

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fn from(origin: Origin<'a>) -> Reference<'a>

Converts to this type from the input type.
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impl<'a> From<Reference<'a>> for Uri<'a>

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fn from(other: Reference<'a>) -> Uri<'a>

Converts to this type from the input type.
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impl Hash for Reference<'_>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl IntoOwned for Reference<'_>

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type Owned = Reference<'static>

The owned version of the type.
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fn into_owned(self) -> Reference<'static>

Converts self into an owned version of itself.
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impl PartialEq<&str> for Reference<'_>

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<Reference<'_>> for str

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fn eq(&self, other: &Reference<'_>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'b, 'a> PartialEq<Reference<'a>> for Uri<'b>

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a, 'b> PartialEq<Reference<'b>> for Reference<'a>

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fn eq(&self, other: &Reference<'b>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'b, 'a> PartialEq<Uri<'b>> for Reference<'a>

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fn eq(&self, other: &Uri<'b>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<str> for Reference<'_>

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a> Serialize for Reference<'a>

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fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl<'a> TryFrom<&'a String> for Reference<'a>

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type Error = Error<'a>

The type returned in the event of a conversion error.
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fn try_from( value: &'a String, ) -> Result<Reference<'a>, <Reference<'a> as TryFrom<&'a String>>::Error>

Performs the conversion.
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impl<'a> TryFrom<&'a str> for Reference<'a>

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type Error = Error<'a>

The type returned in the event of a conversion error.
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fn try_from( value: &'a str, ) -> Result<Reference<'a>, <Reference<'a> as TryFrom<&'a str>>::Error>

Performs the conversion.
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impl TryFrom<String> for Reference<'static>

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type Error = Error<'static>

The type returned in the event of a conversion error.
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fn try_from( value: String, ) -> Result<Reference<'static>, <Reference<'static> as TryFrom<String>>::Error>

Performs the conversion.
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impl<'a> TryFrom<Uri<'a>> for Reference<'a>

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type Error = TryFromUriError

The type returned in the event of a conversion error.
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fn try_from( uri: Uri<'a>, ) -> Result<Reference<'a>, <Reference<'a> as TryFrom<Uri<'a>>>::Error>

Performs the conversion.
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impl Eq for Reference<'_>

Auto Trait Implementations§

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impl<'a> !Freeze for Reference<'a>

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impl<'a> !RefUnwindSafe for Reference<'a>

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impl<'a> Send for Reference<'a>

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impl<'a> Sync for Reference<'a>

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impl<'a> Unpin for Reference<'a>

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impl<'a> UnwindSafe for Reference<'a>

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Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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Compare self to key and return true if they are equal.
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Returns the argument unchanged.

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn quirk(&self, value: Quirk) -> Painted<&T>

Enables the yansi Quirk value.

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Enable wrapping using wrap().

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Returns self with the quirk() set to Quirk::Mask.

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👎Deprecated since 1.0.1: renamed to resetting() due to conflicts with Vec::clear(). The clear() method will be removed in a future release.

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Conditionally enable styling based on whether the Condition value applies. Replaces any previous condition.

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Enable styling painted only when both stdout and stderr are TTYs:

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painted.red().on_yellow().whenever(Condition::STDOUTERR_ARE_TTY);
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impl<T> DeserializeOwned for T
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