hyperlane-macros 17.0.9

A comprehensive collection of procedural macros for building HTTP servers with enhanced functionality. This crate provides attribute macros that simplify HTTP request handling, protocol validation, response management, and request data extraction.
Documentation 
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use crate::*;

/// Filters requests matching the specified host.
/// Supports both single and multiple host value checks.
///
/// # Arguments
///
/// - `TokenStream` - The attribute token stream.
/// - `TokenStream` - The input token stream to process.
/// - `Position` - The position to inject the code.
///
/// # Returns
///
/// - `TokenStream` - The expanded token stream with host filter.
pub(crate) fn host_macro(attr: TokenStream, item: TokenStream, position: Position) -> TokenStream {
    let multi_host: MultiHostData = parse_macro_input!(attr as MultiHostData);
    inject(position, item, |context| {
        let statements = multi_host.host_values.iter().map(|host_value| {
            quote! {
                if #context.get_request().get_host() != #host_value {
                    return;
                }
            }
        });
        quote! {
            #(#statements)*
        }
    })
}

/// Rejects requests matching the specified host.
/// Supports both single and multiple host value checks.
///
/// # Arguments
///
/// - `TokenStream` - The attribute token stream.
/// - `TokenStream` - The input token stream to process.
/// - `Position` - The position to inject the code.
///
/// # Returns
///
/// - `TokenStream` - The expanded token stream with host rejection filter.
pub(crate) fn reject_host_macro(
    attr: TokenStream,
    item: TokenStream,
    position: Position,
) -> TokenStream {
    let multi_host: MultiHostData = parse_macro_input!(attr as MultiHostData);
    inject(position, item, |context| {
        let statements = multi_host.host_values.iter().map(|host_value| {
            quote! {
                if #context.get_request().get_host() == #host_value {
                    return;
                }
            }
        });
        quote! {
            #(#statements)*
        }
    })
}