Enum Json 

pub enum Json {
    Null,
    Bool(bool),
    Int(i64),
    Real(f64),
    Text(String),
    Array(Vec<Json>),
    Object(Vec<(String, Json)>),
}

A JSON value.

An object keeps its pairs in the order they were written, because a result whose keys shuffle between runs cannot be compared byte for byte, and byte comparison is how everything else in this repository is checked.

Variants

Null

null.

Bool(bool)

true or false.

Int(i64)

A number that arrived, or is being written, as an integer.

Real(f64)

A number with a fractional part or an exponent.

Text(String)

A string, already unescaped.

Array(Vec<Json>)

An array.

Object(Vec<(String, Json)>)

An object, in insertion order.

Implementations

impl Json

pub fn get(&self, key: &str) -> Option<&Json>

Returns the value stored under a key, when this is an object that has one.

@param key - the member name

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

Returns this value as a string, for the variants that have one.

A number or a boolean answers None rather than its rendering: a parameter declared as text and given 7 is a caller’s mistake, and quietly reading it as "7" hides the mistake until the SQL is wrong.

pub fn integer(&self) -> Option<i64>

Returns this value as an integer, accepting a whole-numbered real.

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

Returns this value as a boolean.

pub fn array(&self) -> Option<&[Json]>

Returns the elements, when this is an array.

pub fn write(&self) -> String

Writes this value as compact JSON.

pub fn pretty(&self, depth: usize) -> String

Writes this value indented, for a human reading a result on a terminal.

@param depth - how many levels in this value sits

Trait Implementations

impl Clone for Json

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 Json

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

Formats the value using the given formatter.

impl PartialEq for Json

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Json