Trait FromZval 

pub trait FromZval<'a>: Sized {
    const TYPE: DataType;
    const NULLABLE: bool = false;

    // Required method
    fn from_zval(zval: &'a Zval) -> Option<Self>;

    // Provided method
    fn from_missing() -> Option<Self> { ... }
}

Allows zvals to be converted into Rust types in a fallible way. Reciprocal of the IntoZval trait.

Required Associated Constants

const TYPE: DataType

The corresponding type of the implemented value in PHP.

Provided Associated Constants

const NULLABLE: bool = false

Whether a PHP argument of this type accepts null and may be omitted.

Drives the ?T nullability bit and the optional position of a parameter declared with this type.

Required Methods

fn from_zval(zval: &'a Zval) -> Option<Self>

Attempts to retrieve an instance of Self from a reference to a Zval.

Parameters

• zval - Zval to get value from.

Provided Methods

fn from_missing() -> Option<Self>

The value to use when a PHP argument of this type was omitted by the caller. None means the argument is required.

It must return Some exactly when NULLABLE is true. The macros decide from NULLABLE alone which parameters PHP callers may omit.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FromZval<'_> for String

const TYPE: DataType = crate::flags::DataType::String

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for bool

const TYPE: DataType = crate::flags::DataType::Bool

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for f32

const TYPE: DataType = DataType::Double

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for f64

const TYPE: DataType = DataType::Double

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for i8

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for i16

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for i32

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for i64

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for isize

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for u8

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for u16

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for u32

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for u64

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl FromZval<'_> for usize

const TYPE: DataType = crate::flags::DataType::Long

fn from_zval(zval: &Zval) -> Option<Self>

impl<'a, K, V, H> FromZval<'a> for HashMap<K, V, H>

where K: TryFrom<ArrayKey<'a>, Error = Error> + Hash + Eq, V: FromZval<'a>, H: BuildHasher + Default,

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, K, V, H> FromZval<'a> for IndexMap<K, V, H>

where K: TryFrom<ArrayKey<'a>, Error = Error> + Hash + Eq, V: FromZval<'a>, H: BuildHasher + Default,

Available on crate feature indexmap only.

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, K, V> FromZval<'a> for BTreeMap<K, V>

where K: TryFrom<ArrayKey<'a>, Error = Error> + Ord, V: FromZval<'a>,

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, K, V> FromZval<'a> for Vec<(K, V)>

where K: TryFrom<ArrayKey<'a>, Error = Error>, V: FromZval<'a>,

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, T> FromZval<'a> for Option<T>

where T: FromZval<'a>,

const TYPE: DataType = T::TYPE

const NULLABLE: bool = true

fn from_zval(zval: &'a Zval) -> Option<Self>

fn from_missing() -> Option<Self>

impl<'a, T> FromZval<'a> for Vec<T>

where T: FromZval<'a>,

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, V, H> FromZval<'a> for HashMap<ArrayKey<'a>, V, H>

where V: FromZval<'a>, H: BuildHasher + Default,

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, V, H> FromZval<'a> for HashSet<V, H>

where V: FromZval<'a> + Eq + Hash, H: BuildHasher + Default,

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, V, H> FromZval<'a> for IndexMap<ArrayKey<'a>, V, H>

where V: FromZval<'a>, H: BuildHasher + Default,

Available on crate feature indexmap only.

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, V, H> FromZval<'a> for IndexSet<V, H>

where V: FromZval<'a> + Eq + Hash, H: BuildHasher + Default,

Available on crate feature indexmap only.

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, V> FromZval<'a> for BTreeMap<ArrayKey<'a>, V>

where V: FromZval<'a>,

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, V> FromZval<'a> for BTreeSet<V>

where V: FromZval<'a> + Ord,

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a, V> FromZval<'a> for Vec<(ArrayKey<'a>, V)>

where V: FromZval<'a>,

const TYPE: DataType = DataType::Array

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<'a> FromZval<'a> for &'a str

const TYPE: DataType = DataType::String

fn from_zval(zval: &'a Zval) -> Option<Self>

impl<M: SmartStringMode> FromZval<'_> for SmartString<M>

Available on crate feature smartstring only.

const TYPE: DataType = DataType::String

fn from_zval(zval: &Zval) -> Option<Self>

Implementors

impl<'a, T: RegisteredClass> FromZval<'a> for &'a ZendClassObject<T>

const TYPE: DataType

impl<'a, T> FromZval<'a> for BinarySlice<'a, T>

where T: PackSlice,

const TYPE: DataType = DataType::String

impl<'a> FromZval<'a> for &'a Closure

Available on crate feature closure only.

const TYPE: DataType

impl<'a> FromZval<'a> for &'a ZendHashTable

const TYPE: DataType = DataType::Array

impl<'a> FromZval<'a> for &'a ZendObject

const TYPE: DataType = DataType::ANY_OBJECT

impl<'a> FromZval<'a> for &'a Zval

const TYPE: DataType = DataType::Mixed

impl<'a> FromZval<'a> for ArrayKey<'_>

const TYPE: DataType = DataType::String

impl<'a> FromZval<'a> for ZendCallable<'a>

const TYPE: DataType = DataType::Callable

impl<T: Pack> FromZval<'_> for Binary<T>

const TYPE: DataType = DataType::String

impl<T> FromZval<'_> for T

where T: RegisteredEnum + RegisteredClass,

Available on crate feature enum only.

const TYPE: DataType