ValueAccess

microcad_lang::value

Trait ValueAccess 

Source 
pub trait ValueAccess {
    // Required methods
    fn by_id(&self, id: &Identifier) -> Option<&Value>;
    fn by_ty(&self, ty: &Type) -> Option<&Value>;

    // Provided methods
    fn by_str<'a, T>(&'a self, id: &str) -> Result<T, ValueError>
       where T: TryFrom<&'a Value>,
             T::Error: Debug { ... }
    fn get<'a, T>(&'a self, id: &str) -> T
       where T: TryFrom<&'a Value>,
             T::Error: Debug { ... }
    fn get_value(&self, id: &str) -> Result<&Value, ValueError> { ... }
    fn contains_id(&self, id: &Identifier) -> bool { ... }
}
Expand description

Trait for Value Lists

Required Methods§

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fn by_id(&self, id: &Identifier) -> Option<&Value>

Find named value by identifier.

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fn by_ty(&self, ty: &Type) -> Option<&Value>

Find unnamed value by type.

Provided Methods§

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fn by_str<'a, T>(&'a self, id: &str) -> Result<T, ValueError>
where T: TryFrom<&'a Value>, T::Error: Debug,

Helper function to fetch an argument by string.

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fn get<'a, T>(&'a self, id: &str) -> T
where T: TryFrom<&'a Value>, T::Error: Debug,

Fetch an argument value by name as &str.

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fn get_value(&self, id: &str) -> Result<&Value, ValueError>

Fetch an argument value by name as &str.

Panics if id cannot be found.`

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fn contains_id(&self, id: &Identifier) -> bool

Return true, if tuple contains a value with that name

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§