pub trait Value {
    type Artichoke;
    type Arg;
    type Value: Value;
    type Block;
    type Error;

    // Required methods
    fn funcall(
        &self,
        interp: &mut Self::Artichoke,
        func: &str,
        args: &[Self::Arg],
        block: Option<Self::Block>
    ) -> Result<Self::Value, Self::Error>;
    fn freeze(
        &mut self,
        interp: &mut Self::Artichoke
    ) -> Result<(), Self::Error>;
    fn is_frozen(&self, interp: &mut Self::Artichoke) -> bool;
    fn is_nil(&self) -> bool;
    fn respond_to(
        &self,
        interp: &mut Self::Artichoke,
        method: &str
    ) -> Result<bool, Self::Error>;
    fn inspect(&self, interp: &mut Self::Artichoke) -> Vec<u8>;
    fn to_s(&self, interp: &mut Self::Artichoke) -> Vec<u8>;
    fn ruby_type(&self) -> Ruby;

    // Provided methods
    fn try_convert_into<T>(
        self,
        interp: &Self::Artichoke
    ) -> Result<T, Self::Error>
       where Self: Sized,
             Self::Artichoke: TryConvert<Self, T, Error = Self::Error> { ... }
    fn try_convert_into_mut<T>(
        self,
        interp: &mut Self::Artichoke
    ) -> Result<T, Self::Error>
       where Self: Sized,
             Self::Artichoke: TryConvertMut<Self, T, Error = Self::Error> { ... }
}
Expand description

A boxed Ruby value owned by the interpreter.

Value is equivalent to an RValue in MRI or mrb_value in mruby.

Required Associated Types§

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type Artichoke

Concrete type for Artichoke interpreter.

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type Arg

Concrete type for arguments passed to funcall.

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type Value: Value

Concrete type for results from funcall.

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type Block

Concrete type for blocks passed to funcall.

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type Error

Concrete error type for funcall errors.

Required Methods§

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fn funcall( &self, interp: &mut Self::Artichoke, func: &str, args: &[Self::Arg], block: Option<Self::Block> ) -> Result<Self::Value, Self::Error>

Call a method on this Value with arguments and an optional block.

§Errors

If an exception is raised on the interpreter, then an error is returned.

If a TryConvert conversion fails, then an error is returned.

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fn freeze(&mut self, interp: &mut Self::Artichoke) -> Result<(), Self::Error>

Call #freeze on this Value.

§Errors

If an exception is raised on the interpreter, then an error is returned.

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fn is_frozen(&self, interp: &mut Self::Artichoke) -> bool

Call #frozen? on this Value.

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fn is_nil(&self) -> bool

Whether self is nil

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fn respond_to( &self, interp: &mut Self::Artichoke, method: &str ) -> Result<bool, Self::Error>

Whether self responds to a method.

Equivalent to invoking #respond_to? on this Value.

§Errors

If an exception is raised on the interpreter, then an error is returned.

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fn inspect(&self, interp: &mut Self::Artichoke) -> Vec<u8>

Call #inspect on this Value.

This function can never fail.

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fn to_s(&self, interp: &mut Self::Artichoke) -> Vec<u8>

Call #to_s on this Value.

This function can never fail.

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fn ruby_type(&self) -> Ruby

Return this values Rust-mapped type tag.

Provided Methods§

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fn try_convert_into<T>(self, interp: &Self::Artichoke) -> Result<T, Self::Error>
where Self: Sized, Self::Artichoke: TryConvert<Self, T, Error = Self::Error>,

Consume self and try to convert self to type T using a TryConvert conversion.

§Errors

If a TryConvert conversion fails, then an error is returned.

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fn try_convert_into_mut<T>( self, interp: &mut Self::Artichoke ) -> Result<T, Self::Error>
where Self: Sized, Self::Artichoke: TryConvertMut<Self, T, Error = Self::Error>,

Consume self and try to convert self to type T using a TryConvertMut conversion.

§Errors

If a TryConvertMut conversion fails, then an error is returned.

Implementors§