Function generate 

pub fn generate(
    tokens: TokenStream,
    crate_name: &str,
) -> Result<(TokenStream, Vec<(u8, String)>)>

Generate escape functions from a token stream template

This function takes a token stream representing character mappings and generates the corresponding escape function implementations. It returns both the generated code and metadata about the escape mappings.

Arguments

• tokens - A token stream containing the character mappings in the format new!(char -> "escape", ...)
• crate_name - The name of the crate where the generated code will be used

Returns

Returns a tuple containing:

• The generated code as a TokenStream
• A Vec<(u8, String)> of (char_byte, replacement) pairs, sorted by char_byte ascending. Callers can derive convenience strings (such as the concatenation of all source bytes or replacements) from this list as needed.

Errors

Returns a syn::Error if the token stream cannot be parsed or if the character mappings are invalid.