nest-rs-http-macros 0.2.0

Internal — HTTP decorator macros (#[controller], #[routes], verb attributes, #[interceptor]); re-exported by nest-rs-http, not a direct dependency.
Documentation 
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//! `#[input]` — shorthand attribute for input DTOs. Expands to
//! `#[derive(::serde::Deserialize, ::validator::Validate)]` plus
//! `#[serde(deny_unknown_fields)]`, so a payload carrying an unknown field
//! (e.g. `is_admin: true`) is rejected at parse time instead of silently
//! ignored. The derives are appended to any existing `#[derive(...)]` on the
//! struct so the user can still add `Debug`, `Clone`, `JsonSchema`, etc.

use proc_macro::TokenStream;
use quote::quote;
use syn::{Item, parse_macro_input};

pub(crate) fn input(args: TokenStream, input: TokenStream) -> TokenStream {
    if !args.is_empty() {
        return syn::Error::new(
            proc_macro2::Span::call_site(),
            "#[input] takes no arguments",
        )
        .to_compile_error()
        .into();
    }

    let item = parse_macro_input!(input as Item);
    let Item::Struct(item) = item else {
        return syn::Error::new_spanned(item, "#[input] may only be applied to a struct")
            .to_compile_error()
            .into();
    };

    quote! {
        #[derive(::serde::Deserialize, ::validator::Validate)]
        #[serde(deny_unknown_fields)]
        #item
    }
    .into()
}