Struct RcJsonRawValue 

pub struct RcJsonRawValue(/* private fields */);

A reference-counted RawValue: a string that is guaranteed to contain valid JSON.

This lets JSON produced in one task be passed through other tasks and re-emitted verbatim without re-validating it.

Values restored from the persistent cache are trusted to be valid JSON, like all other cached data.

Implementations

impl RcJsonRawValue

pub fn cell(self) -> Vc<Self>

Places a value in a cell of the current task.

Cell is selected based on the value type and call order of cell.

pub fn resolved_cell(self) -> ResolvedVc<Self>

Places a value in a cell of the current task. Returns a ResolvedVc.

Cell is selected based on the value type and call order of cell.

impl RcJsonRawValue

pub fn from_serialize<T: Serialize + ?Sized>(value: &T) -> Result<Self>

Methods from Deref<Target = RawValue>

pub const NULL: &'static RawValue

pub const TRUE: &'static RawValue

pub const FALSE: &'static RawValue

pub fn get(&self) -> &str

Access the JSON text underlying a raw value.

Example

use serde::Deserialize;
use serde_json::{Result, value::RawValue};

#[derive(Deserialize)]
struct Response<'a> {
    code: u32,
    #[serde(borrow)]
    payload: &'a RawValue,
}

fn process(input: &str) -> Result<()> {
    let response: Response = serde_json::from_str(input)?;

    let payload = response.payload.get();
    if payload.starts_with('{') {
        // handle a payload which is a JSON map
    } else {
        // handle any other type
    }

    Ok(())
}

fn main() -> Result<()> {
    process(r#" {"code": 200, "payload": {}} "#)?;
    Ok(())
}

Trait Implementations

impl<'de, __Context> BorrowDecode<'de, __Context> for RcJsonRawValue

fn borrow_decode<D: BorrowDecoder<'de, Context = __Context>>( decoder: &mut D, ) -> Result<Self, DecodeError>

Attempt to decode this type with the given BorrowDecode.

impl Clone for RcJsonRawValue

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RcJsonRawValue

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

Formats the value using the given formatter.

impl<Context> Decode<Context> for RcJsonRawValue

fn decode<D: Decoder<Context = Context>>( decoder: &mut D, ) -> Result<Self, DecodeError>

Attempt to decode this type with the given Decode.

impl Deref for RcJsonRawValue

type Target = RawValue

The resulting type after dereferencing.

fn deref(&self) -> &RawValue

Dereferences the value.

impl Encode for RcJsonRawValue

fn encode<E: Encoder>(&self, encoder: &mut E) -> Result<(), EncodeError>

Encode a given type.

impl Eq for RcJsonRawValue

impl Hash for RcJsonRawValue

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 NonLocalValue for RcJsonRawValue

impl PartialEq for RcJsonRawValue

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

Equality operator ==.

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

Inequality operator !=.

impl ShrinkToFit for RcJsonRawValue

fn shrink_to_fit(&mut self)

impl TaskInput for RcJsonRawValue

fn is_transient(&self) -> bool

This should return true if this object contains a Vc (or any subtype of Vc) pointing to a cell owned by a transient task.

fn resolve_input(&self) -> impl Future<Output = Result<Self, Error>> + Send

This method should resolve any Vcs nested inside of this object, cloning the object in the process. If the input is unresolved (TaskInput::is_resolved) a “local” resolution task is created that runs this method.

fn is_resolved(&self) -> bool

This should return true if there are any unresolved Vcs in the type.

impl Upcast<Box<dyn ValueDebug>> for RcJsonRawValue

impl UpcastStrict<Box<dyn ValueDebug>> for RcJsonRawValue

impl ValueDebug for RcJsonRawValue

fn dbg_depth<'a>( &'a self, depth: usize, ) -> Pin<Box<dyn Future<Output = Result<String>> + Send + 'a>>

Like dbg, but with a depth limit.

fn dbg( &self, ) -> Pin<Box<dyn Future<Output = Result<String, Error>> + Send + '_>>

impl ValueDebugFormat for RcJsonRawValue

Available on debug-assertions enabled only.

fn value_debug_format<'a>(&'a self, depth: usize) -> ValueDebugFormatString<'a>

impl VcValueType for RcJsonRawValue

type Read = VcDefaultRead<RcJsonRawValue>

How to read the value.

type CellMode = VcCellCompareMode<RcJsonRawValue>

How to update cells of this value type.

fn get_value_type_id() -> ValueTypeId

Returns the type id of the value type.

fn has_serialization() -> bool