Trait liquid::ValueView

pub trait ValueView: Debug {
    fn as_debug(&self) -> &dyn Debug;
    fn render(&self) -> DisplayCow;
    fn source(&self) -> DisplayCow;
    fn type_name(&self) -> &'static str;
    fn query_state(&self, state: State) -> bool;
    fn to_kstr(&self) -> KStringCow;
    fn to_value(&self) -> Value;

    fn as_scalar(&self) -> Option<ScalarCow> { ... }
    fn is_scalar(&self) -> bool { ... }
    fn as_array(&self) -> Option<&dyn ArrayView> { ... }
    fn is_array(&self) -> bool { ... }
    fn as_object(&self) -> Option<&dyn ObjectView> { ... }
    fn is_object(&self) -> bool { ... }
    fn as_state(&self) -> Option<State> { ... }
    fn is_state(&self) -> bool { ... }
    fn is_nil(&self) -> bool { ... }
}

Accessor for Values.

Required methods

fn as_debug(&self) -> &dyn Debug

Get a Debug representation

fn render(&self) -> DisplayCow

A Display for a BoxedValue rendered for the user.

fn source(&self) -> DisplayCow

A Display for a Value as source code.

fn type_name(&self) -> &'static str

Report the data type (generally for error reporting).

fn query_state(&self, state: State) -> bool

Query the value's state

fn to_kstr(&self) -> KStringCow

Interpret as a string.

fn to_value(&self) -> Value

Convert to an owned type.

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Provided methods

fn as_scalar(&self) -> Option<ScalarCow>

Extracts the scalar value if it is a scalar.

fn is_scalar(&self) -> bool

Tests whether this value is a scalar

fn as_array(&self) -> Option<&dyn ArrayView>

Extracts the array value if it is an array.

fn is_array(&self) -> bool

Tests whether this value is an array

fn as_object(&self) -> Option<&dyn ObjectView>

Extracts the object value if it is a object.

fn is_object(&self) -> bool

Tests whether this value is an object

fn as_state(&self) -> Option<State>

Extracts the state if it is one

fn is_state(&self) -> bool

Tests whether this value is state

fn is_nil(&self) -> bool

Tests whether this value is nil

See https://stackoverflow.com/questions/885414/a-concise-explanation-of-nil-v-empty-v-blank-in-ruby-on-rails

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Implementations on Foreign Types

impl ValueView for i64

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for String

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for i16

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for i8

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for f32

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl<K, V> ValueView for BTreeMap<K, V> where
    K: ObjectIndex,
    V: ValueView, 

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_object(&self) -> Option<&dyn ObjectView>

impl ValueView for i32

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl<'s> ValueView for &'s str

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl<'s> ValueView for KStringCow<'s>

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl<'s> ValueView for KStringRef<'s>

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for KString

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for u8

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for u16

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for bool

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for f64

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for u32

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl<T> ValueView for Option<T> where
    T: ValueView, 

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

fn as_array(&self) -> Option<&dyn ArrayView>

fn as_object(&self) -> Option<&dyn ObjectView>

fn as_state(&self) -> Option<State>

fn is_nil(&self) -> bool

impl<T> ValueView for Vec<T> where
    T: ValueView, 

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_array(&self) -> Option<&dyn ArrayView>

impl<K, V, S> ValueView for HashMap<K, V, S> where
    K: ObjectIndex,
    S: BuildHasher,
    V: ValueView, 

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_object(&self) -> Option<&dyn ObjectView>

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Implementors

impl ValueView for State

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_state(&self) -> Option<State>

impl ValueView for Value

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

fn as_array(&self) -> Option<&dyn ArrayView>

fn as_object(&self) -> Option<&dyn ObjectView>

fn as_state(&self) -> Option<State>

fn is_nil(&self) -> bool

impl ValueView for Date

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for DateTime

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

impl ValueView for Object

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_object(&self) -> Option<&dyn ObjectView>

impl<'s> ValueView for ValueCow<'s>

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

fn as_array(&self) -> Option<&dyn ArrayView>

fn as_object(&self) -> Option<&dyn ObjectView>

fn as_state(&self) -> Option<State>

fn is_nil(&self) -> bool

impl<'s> ValueView for ScalarCow<'s>

fn as_debug(&self) -> &dyn Debug

fn render(&self) -> DisplayCow

fn source(&self) -> DisplayCow

fn type_name(&self) -> &'static str

fn query_state(&self, state: State) -> bool

fn to_kstr(&self) -> KStringCow

fn to_value(&self) -> Value

fn as_scalar(&self) -> Option<ScalarCow>

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