Method new

lib/dsc-lib/src/parser/functions.rs:82–103

Create a new `Function` instance. # Arguments `function_dispatcher` - The function dispatcher to use. `statement` - The statement that the function is part of. `function` - The function node. # Errors This function will return an error if the function node is not valid.

(statement_bytes: &[u8], function: &Node)

    ///
    /// This function will return an error if the function node is not valid.
    pub fn new(statement_bytes: &[u8], function: &Node) -> Result<Self, DscError> {
        let mut function_name = None;
        let mut function_args = None;
        let mut cursor = function.walk();
        for member in function.named_children(&mut cursor) {
            match member.kind() {
                "arguments" => function_args = Some(member),
                "functionName" => function_name = Some(member),
                "ERROR" => return Err(DscError::Parser(t!("parser.functions.foundErrorNode").to_string())),
                _ => {}
            }
        }
        let Some(name) = function_name else {
            return Err(DscError::Parser(t!("parser.functions.nameNodeNotFound").to_string()));
        };
        let args = convert_args_node(statement_bytes, function_args.as_ref())?;
        let name = name.utf8_text(statement_bytes)?;
        debug!("{}", t!("parser.functions.functionName", name = name));
        Ok(Function{
            name: name.to_string(),
            args})
    }

    /// Invoke the function.
    ///