Enum subgraph::json::Value

pub enum Value {
    Null,
    Bool(bool),
    Number(Number),
    String(String),
    Array(Vec<Value>),
    Object(IndexMap<String, Value>),
}

A Subgraph JSON value.

Variants

Null

Bool(bool)

Number(Number)

String(String)

Array(Vec<Value>)

Object(IndexMap<String, Value>)

Implementations

impl Value

pub fn from_bytes(bytes: impl AsRef<[u8]>) -> Self

Parses a new JSON from from some bytes.

pub fn try_from_bytes(bytes: impl AsRef<[u8]>) -> Result<Self, ParseError>

Parses a new JSON value from bytes, returning and error on failure.

pub fn as_null(&self) -> Option<()>

Returns the JSON value as a unit value, or None if the value is not null.

pub fn as_bool(&self) -> Option<bool>

Returns the JSON value as a boolean value, or None if the value is not true or false.

pub fn as_number(&self) -> Option<&Number>

Returns the JSON value as a numeric value, or None if the value is not a number.

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

Returns the JSON value as a string value, or None if the value is not a string.

pub fn as_array(&self) -> Option<&[Self]>

Returns the JSON value as a slice of values, or None if the value is not an array.

pub fn as_object(&self) -> Option<&IndexMap<String, Self>>

Returns the JSON value as a map of values, or None if the value is not an object.

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl Default for Value

fn default() -> Value

Returns the “default value” for a type.

impl Display for Value

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

Formats the value using the given formatter.

impl FromStr for Value

type Err = ParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl PartialEq<Value> for Value

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for Value

impl StructuralEq for Value

impl StructuralPartialEq for Value