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ExtensionFunctions

sup_xml::xslt

Trait ExtensionFunctions 

Source 
pub trait ExtensionFunctions {
    // Required method
    fn call(
        &self,
        ns_uri: &str,
        name: &str,
        args: Vec<Value>,
    ) -> Option<Result<Value, XmlError>>;
}
Expand description

Caller-supplied lookup for non-XSLT XPath functions.

Implement on your own type to integrate with an existing function registry, or use the Extensions builder for per-call closure registration.

Required Methods§

Source

fn call( &self, ns_uri: &str, name: &str, args: Vec<Value>, ) -> Option<Result<Value, XmlError>>

Try to invoke name in ns_uri with args. Return Some(Ok(value)) on success, Some(Err(_)) to surface a runtime error, or None if this implementation doesn’t handle the call (the engine will continue its fallback chain — native EXSLT, then “unknown function” error).

Dyn Compatibility§

This trait is dyn compatible.

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

Implementors§