Struct minijinja::value::Value

pub struct Value(_);

Represents a dynamically typed value in the template engine.

Implementations

impl Value

pub const UNDEFINED: Value

The undefined value

pub fn from_serializable<T: Serialize>(value: &T) -> Value

Creates a value from something that can be serialized.

pub fn from_safe_string(value: String) -> Value

Creates a value from a safe string.

pub fn kind(&self) -> ValueKind

Returns the value kind.

pub fn as_primitive(&self) -> Option<Primitive<'_>>

Returns the primitive representation of the value.

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

If the value is a string, return it.

pub fn is_true(&self) -> bool

Is this value true?

pub fn is_safe(&self) -> bool

Returns true if this value is safe.

pub fn is_undefined(&self) -> bool

Returns true if this value is undefined.

pub fn len(&self) -> Option<usize>

Returns the length of the contained value.

pub fn get_attr(&self, key: &str) -> Result<Value, Error>

Looks up an attribute by attribute name.

pub fn get_item(&self, key: &Value) -> Result<Value, Error>

Looks up an item (or attribute) by key.

This is similar to get_attr but instead of using a string key this can be any key. For instance this can be used to index into sequences.

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<(), Error>

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<'a> From<&'a [u8]> for Value

fn from(val: &'a [u8]) -> Self

Performs the conversion.

impl<'a> From<&'a str> for Value

fn from(val: &'a str) -> Self

Performs the conversion.

impl From<()> for Value

fn from(_: ()) -> Self

Performs the conversion.

impl<K: Into<Key<'static>>, V: Into<Value>> From<BTreeMap<K, V>> for Value

fn from(val: BTreeMap<K, V>) -> Self

Performs the conversion.

impl<'a> From<Cow<'a, str>> for Value

fn from(val: Cow<'a, str>) -> Self

Performs the conversion.

impl From<String> for Value

fn from(val: String) -> Self

Performs the conversion.

impl From<Value> for String

fn from(val: Value) -> Self

Performs the conversion.

impl<T: Into<Value>> From<Vec<T, Global>> for Value

fn from(val: Vec<T>) -> Self

Performs the conversion.

impl From<bool> for Value

fn from(val: bool) -> Self

Performs the conversion.

impl From<char> for Value

fn from(val: char) -> Self

Performs the conversion.

impl From<f32> for Value

fn from(val: f32) -> Self

Performs the conversion.

impl From<f64> for Value

fn from(val: f64) -> Self

Performs the conversion.

impl From<i128> for Value

fn from(val: i128) -> Self

Performs the conversion.

impl From<i16> for Value

fn from(val: i16) -> Self

Performs the conversion.

impl From<i32> for Value

fn from(val: i32) -> Self

Performs the conversion.

impl From<i64> for Value

fn from(val: i64) -> Self

Performs the conversion.

impl From<i8> for Value

fn from(val: i8) -> Self

Performs the conversion.

impl From<u128> for Value

fn from(val: u128) -> Self

Performs the conversion.

impl From<u16> for Value

fn from(val: u16) -> Self

Performs the conversion.

impl From<u32> for Value

fn from(val: u32) -> Self

Performs the conversion.

impl From<u64> for Value

fn from(val: u64) -> Self

Performs the conversion.

impl From<u8> for Value

fn from(val: u8) -> Self

Performs the conversion.

impl From<usize> for Value

fn from(val: usize) -> Self

Performs the conversion.

impl PartialEq<Value> for Value

fn eq(&self, other: &Self) -> 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 !=.

impl PartialOrd<Value> for Value

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

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

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

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

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

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

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

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

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

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

impl Serialize for Value

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.

impl TryFrom<Value> for u8

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u16

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for bool

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for f64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u32

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for u128

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i8

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i16

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i32

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for i128

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for Value