Function resolve_function_arguments 

pub fn resolve_function_arguments(
    param_names: &[String],
    args: Vec<Expr>,
    arg_names: Vec<Option<String>>,
) -> Result<Vec<Expr>>

Resolves function arguments, handling named and positional notation.

This function validates and reorders arguments to match the function’s parameter names when named arguments are used.

Rules

• All positional arguments must come before named arguments
• Named arguments can be in any order after positional arguments
• Parameter names follow SQL identifier rules: unquoted names are case-insensitive (normalized to lowercase), quoted names are case-sensitive
• No duplicate parameter names allowed

Arguments

• param_names - The function’s parameter names in order
• args - The argument expressions
• arg_names - Optional parameter name for each argument

Returns

A vector of expressions in the correct order matching the parameter names

Examples

Given parameters ["a", "b", "c"]
And call: func(10, c => 30, b => 20)
Returns: [Expr(10), Expr(20), Expr(30)]