Enum rule::arg::Arg

pub enum Arg {
    Null,
    Bool(bool),
    Int(i64),
    Float(f64),
    String(String),
    Array(Vec<Arg>),
    Expr(Expr),
}

The argument type. Each argument can be a json primitive type or a Expr.

Variants

Null

Bool(bool)

Int(i64)

Float(f64)

String(String)

Array(Vec<Arg>)

Expr(Expr)

Methods

impl Arg

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

If the Arg is a bool, returns the associated bool. Returns None otherwise.

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

If the Arg is a String, returns the associated String. Returns None otherwise.

pub fn from_json(val: Json) -> Result<Arg>

pub fn from_json_context_var(val: Json) -> Result<Arg>

pub fn from_context_var(
    args: &Vec<Arg>,
    context: &Map<String, Json>
) -> Result<Arg>

Trait Implementations

impl Into<String> for Arg

fn into(self) -> String

Performs the conversion.

impl Into<i64> for Arg

fn into(self) -> i64

Performs the conversion.

impl<'a> Into<i64> for &'a Arg

fn into(self) -> i64

Performs the conversion.

impl Into<f64> for Arg

fn into(self) -> f64

Performs the conversion.

impl Into<Option<Expr>> for Arg

fn into(self) -> Option<Expr>

Performs the conversion.

impl Into<Arg> for Json

fn into(self) -> Arg

Performs the conversion.

impl Into<bool> for Arg

fn into(self) -> bool

Performs the conversion.

impl<'_> Into<bool> for &'_ Arg

fn into(self) -> bool

Performs the conversion.

impl<'a> From<&'a Arg> for String

fn from(arg: &'a Arg) -> Self

Performs the conversion.

impl Clone for Arg

fn clone(&self) -> Arg

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq<Arg> for Arg

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

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

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

This method tests for !=.

impl PartialOrd<Arg> for Arg

fn partial_cmp(&self, other: &Arg) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Arg) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Arg) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Arg) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Arg) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Display for Arg

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

Formats the value using the given formatter.

impl Debug for Arg

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

Formats the value using the given formatter.

impl Div<Arg> for Arg

type Output = Arg

The resulting type after applying the / operator.

fn div(self, rhs: Arg) -> Arg

Performs the / operation.

impl Rem<Arg> for Arg

type Output = Arg

The resulting type after applying the % operator.

fn rem(self, rhs: Arg) -> Arg

Performs the % operation.

impl Sub<Arg> for Arg

type Output = Arg

The resulting type after applying the - operator.

fn sub(self, other: Arg) -> Arg

Performs the - operation.

impl Add<Arg> for Arg

type Output = Arg

The resulting type after applying the + operator.

fn add(self, other: Arg) -> Arg

Performs the + operation.

impl<'a> Add<&'a Arg> for Arg

type Output = Arg

The resulting type after applying the + operator.

fn add(self, other: &'a Arg) -> Arg

Performs the + operation.

impl Mul<Arg> for Arg

type Output = Arg

The resulting type after applying the * operator.

fn mul(self, rhs: Arg) -> Arg

Performs the * operation.

impl Neg for Arg

type Output = Arg

The resulting type after applying the - operator.

fn neg(self) -> Arg

Performs the unary - operation.

impl<'a> Neg for &'a Arg

type Output = Arg

The resulting type after applying the - operator.

fn neg(self) -> Arg

Performs the unary - operation.