Enum amplify_syn::ValueClass

pub enum ValueClass {
    Literal(LiteralClass),
    Type(TypeClass),
    Expr,
}

Constrains for attribute value type

Variants

Literal(LiteralClass)

The value must be a literal matching given literal constraints (see LiteralClass)

Type(TypeClass)

The value must be of a native rust type matching given type constraints (see TypeClass)

Expr

The value must be of a native rust expression.

Implementations

impl ValueClass

pub fn str() -> ValueClass

Convenience constructor creating ValueClass::Literal(LiteralClass::Str)

pub fn byte_str() -> ValueClass

Convenience constructor creating ValueClass::Literal(LiteralClass::ByteStr)

pub fn byte() -> ValueClass

Convenience constructor creating ValueClass::Literal(LiteralClass::Byte)

pub fn int() -> ValueClass

Convenience constructor creating ValueClass::Literal(LiteralClass::Int)

pub fn float() -> ValueClass

Convenience constructor creating ValueClass::Literal(LiteralClass::Float)

pub fn char() -> ValueClass

Convenience constructor creating ValueClass::Literal(LiteralClass::Char)

pub fn bool() -> ValueClass

Convenience constructor creating ValueClass::Literal(LiteralClass::Bool)

impl ValueClass

pub fn check( self, value: &ArgValue, attr: impl ToString, arg: impl ToString ) -> Result<(), Error>

Checks the value against value class requirements, generating Error if the requirements are not met.

Trait Implementations

impl Clone for ValueClass

fn clone(&self) -> ValueClass

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ValueClass

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

Formats the value using the given formatter.

impl From<&Lit> for ValueClass

fn from(lit: &Lit) -> Self

Converts to this type from the input type.

impl From<&Type> for ValueClass

fn from(ty: &Type) -> Self

Converts to this type from the input type.

impl From<Lit> for ValueClass

fn from(lit: Lit) -> Self

Converts to this type from the input type.

impl From<LiteralClass> for ValueClass

fn from(cls: LiteralClass) -> Self

Converts to this type from the input type.

impl From<Type> for ValueClass

fn from(ty: Type) -> Self

Converts to this type from the input type.

impl From<TypeClass> for ValueClass

fn from(cls: TypeClass) -> Self

Converts to this type from the input type.

impl Hash for ValueClass

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ValueClass

fn cmp(&self, other: &ValueClass) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<ValueClass> for ValueClass

fn eq(&self, other: &ValueClass) -> 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 !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<ValueClass> for ValueClass

fn partial_cmp(&self, other: &ValueClass) -> 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 Copy for ValueClass

impl Eq for ValueClass

impl StructuralEq for ValueClass

impl StructuralPartialEq for ValueClass