Trait HostFields

pub trait HostFields {
    // Required methods
    fn new(&mut self) -> Result<Resource<Fields>>;
    fn from_list(
        &mut self,
        entries: Vec<(FieldKey, FieldValue)>,
    ) -> Result<Result<Resource<Fields>, HeaderError>>;
    fn get(
        &mut self,
        self_: Resource<Fields>,
        name: FieldKey,
    ) -> Result<Vec<FieldValue>>;
    fn has(&mut self, self_: Resource<Fields>, name: FieldKey) -> Result<bool>;
    fn set(
        &mut self,
        self_: Resource<Fields>,
        name: FieldKey,
        value: Vec<FieldValue>,
    ) -> Result<Result<(), HeaderError>>;
    fn delete(
        &mut self,
        self_: Resource<Fields>,
        name: FieldKey,
    ) -> Result<Result<(), HeaderError>>;
    fn append(
        &mut self,
        self_: Resource<Fields>,
        name: FieldKey,
        value: FieldValue,
    ) -> Result<Result<(), HeaderError>>;
    fn entries(
        &mut self,
        self_: Resource<Fields>,
    ) -> Result<Vec<(FieldKey, FieldValue)>>;
    fn clone(&mut self, self_: Resource<Fields>) -> Result<Resource<Fields>>;
    fn drop(&mut self, rep: Resource<Fields>) -> Result<()>;
}

Required Methods

fn new(&mut self) -> Result<Resource<Fields>>

Construct an empty HTTP Fields.

The resulting fields is mutable.

fn from_list( &mut self, entries: Vec<(FieldKey, FieldValue)>, ) -> Result<Result<Resource<Fields>, HeaderError>>

Construct an HTTP Fields.

The resulting fields is mutable.

The list represents each key-value pair in the Fields. Keys which have multiple values are represented by multiple entries in this list with the same key.

The tuple is a pair of the field key, represented as a string, and Value, represented as a list of bytes.

An error result will be returned if any field-key or field-value is syntactically invalid, or if a field is forbidden.

fn get( &mut self, self_: Resource<Fields>, name: FieldKey, ) -> Result<Vec<FieldValue>>

Get all of the values corresponding to a key. If the key is not present in this fields or is syntactically invalid, an empty list is returned. However, if the key is present but empty, this is represented by a list with one or more empty field-values present.

fn has(&mut self, self_: Resource<Fields>, name: FieldKey) -> Result<bool>

Returns true when the key is present in this fields. If the key is syntactically invalid, false is returned.

fn set( &mut self, self_: Resource<Fields>, name: FieldKey, value: Vec<FieldValue>, ) -> Result<Result<(), HeaderError>>

Set all of the values for a key. Clears any existing values for that key, if they have been set.

Fails with header-error.immutable if the fields are immutable.

Fails with header-error.invalid-syntax if the field-key or any of the field-values are syntactically invalid.

fn delete( &mut self, self_: Resource<Fields>, name: FieldKey, ) -> Result<Result<(), HeaderError>>

Delete all values for a key. Does nothing if no values for the key exist.

Fails with header-error.immutable if the fields are immutable.

Fails with header-error.invalid-syntax if the field-key is syntactically invalid.

fn append( &mut self, self_: Resource<Fields>, name: FieldKey, value: FieldValue, ) -> Result<Result<(), HeaderError>>

Append a value for a key. Does not change or delete any existing values for that key.

Fails with header-error.immutable if the fields are immutable.

Fails with header-error.invalid-syntax if the field-key or field-value are syntactically invalid.

fn entries( &mut self, self_: Resource<Fields>, ) -> Result<Vec<(FieldKey, FieldValue)>>

Retrieve the full set of keys and values in the Fields. Like the constructor, the list represents each key-value pair.

The outer list represents each key-value pair in the Fields. Keys which have multiple values are represented by multiple entries in this list with the same key.

fn clone(&mut self, self_: Resource<Fields>) -> Result<Resource<Fields>>

Make a deep copy of the Fields. Equivalent in behavior to calling the fields constructor on the return value of entries. The resulting fields is mutable.

fn drop(&mut self, rep: Resource<Fields>) -> Result<()>

Implementations on Foreign Types

impl<_T: HostFields + ?Sized + Send> HostFields for &mut _T

fn new(&mut self) -> Result<Resource<Fields>>

Construct an empty HTTP Fields.

The resulting fields is mutable.

fn from_list( &mut self, entries: Vec<(FieldKey, FieldValue)>, ) -> Result<Result<Resource<Fields>, HeaderError>>

Construct an HTTP Fields.

The resulting fields is mutable.

The list represents each key-value pair in the Fields. Keys which have multiple values are represented by multiple entries in this list with the same key.

The tuple is a pair of the field key, represented as a string, and Value, represented as a list of bytes.

An error result will be returned if any field-key or field-value is syntactically invalid, or if a field is forbidden.

fn get( &mut self, self_: Resource<Fields>, name: FieldKey, ) -> Result<Vec<FieldValue>>

Get all of the values corresponding to a key. If the key is not present in this fields or is syntactically invalid, an empty list is returned. However, if the key is present but empty, this is represented by a list with one or more empty field-values present.

fn has(&mut self, self_: Resource<Fields>, name: FieldKey) -> Result<bool>

Returns true when the key is present in this fields. If the key is syntactically invalid, false is returned.

fn set( &mut self, self_: Resource<Fields>, name: FieldKey, value: Vec<FieldValue>, ) -> Result<Result<(), HeaderError>>

Set all of the values for a key. Clears any existing values for that key, if they have been set.

Fails with header-error.immutable if the fields are immutable.

Fails with header-error.invalid-syntax if the field-key or any of the field-values are syntactically invalid.

fn delete( &mut self, self_: Resource<Fields>, name: FieldKey, ) -> Result<Result<(), HeaderError>>

Delete all values for a key. Does nothing if no values for the key exist.

Fails with header-error.immutable if the fields are immutable.

Fails with header-error.invalid-syntax if the field-key is syntactically invalid.

fn append( &mut self, self_: Resource<Fields>, name: FieldKey, value: FieldValue, ) -> Result<Result<(), HeaderError>>

Append a value for a key. Does not change or delete any existing values for that key.

Fails with header-error.immutable if the fields are immutable.

Fails with header-error.invalid-syntax if the field-key or field-value are syntactically invalid.

fn entries( &mut self, self_: Resource<Fields>, ) -> Result<Vec<(FieldKey, FieldValue)>>

Retrieve the full set of keys and values in the Fields. Like the constructor, the list represents each key-value pair.

The outer list represents each key-value pair in the Fields. Keys which have multiple values are represented by multiple entries in this list with the same key.

fn clone(&mut self, self_: Resource<Fields>) -> Result<Resource<Fields>>

Make a deep copy of the Fields. Equivalent in behavior to calling the fields constructor on the return value of entries. The resulting fields is mutable.

fn drop(&mut self, rep: Resource<Fields>) -> Result<()>

Implementors

impl<T> HostFields for WasiHttpImpl<T>

where T: WasiHttpView,