hyperlane-macros 21.12.0

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 super::*;

/// Implementation of Parse trait for ResponseHeaderData.
///
/// Parses header key, operation and value from input stream.
impl Parse for ResponseHeaderData {
    /// Parses the input token stream into a ResponseHeaderData structure.
    ///
    /// # Arguments
    ///
    /// - `ParseStream` - The token stream to parse.
    ///
    /// # Returns
    ///
    /// - `syn::Result<Self>` - The parsed ResponseHeaderData, or an error for invalid input.
    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_ADD_OR_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 {
    /// Parses the input token stream into a ResponseBodyData structure.
    ///
    /// # Arguments
    ///
    /// - `ParseStream` - The token stream to parse.
    ///
    /// # Returns
    ///
    /// - `syn::Result<Self>` - The parsed ResponseBodyData, or an error for invalid input.
    fn parse(input: ParseStream) -> syn::Result<Self> {
        let body: Expr = input.parse()?;
        Ok(ResponseBodyData { body })
    }
}