hyperlane-macros 19.0.0

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::*;

/// Implementation of Parse trait for ResponseHeaderData.
///
/// Parses header key, operation and value from input stream.
impl Parse for ResponseHeaderData {
    fn parse(input: ParseStream) -> syn::Result<Self> {
        let key: Expr = input.parse()?;
        let operation: HeaderOperation = if input.peek(Token![=>]) {
            input.parse::<Token![=>]>()?;
            HeaderOperation::Set
        } else if input.peek(Token![,]) {
            input.parse::<Token![,]>()?;
            HeaderOperation::Add
        } else {
            return Err(syn::Error::new(
                input.span(),
                "Expected either ',' for add operation or '=>' for set operation",
            ));
        };
        let value: Expr = input.parse()?;
        Ok(ResponseHeaderData {
            key,
            value,
            operation,
        })
    }
}

/// Implementation of Parse trait for ResponseBodyData.
///
/// Parses response body expression from input stream.
impl Parse for ResponseBodyData {
    fn parse(input: ParseStream) -> syn::Result<Self> {
        let body: Expr = input.parse()?;
        Ok(ResponseBodyData { body })
    }
}