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31 lines
800 B
Rust
31 lines
800 B
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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use proc_macro::TokenStream;
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use quote::quote;
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use serde::Deserialize;
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static NAPI_EXPORTS: &str = include_str!("./symbol_exports.json");
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#[derive(Deserialize)]
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struct SymbolExports {
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pub symbols: Vec<String>,
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}
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#[proc_macro_attribute]
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pub fn napi_sym(_attr: TokenStream, item: TokenStream) -> TokenStream {
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let func = syn::parse::<syn::ItemFn>(item).expect("expected a function");
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let exports: SymbolExports =
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serde_json::from_str(NAPI_EXPORTS).expect("failed to parse exports");
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let name = &func.sig.ident;
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assert!(
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exports.symbols.contains(&name.to_string()),
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"cli/napi/sym/symbol_exports.json is out of sync!"
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);
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TokenStream::from(quote! {
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crate::napi_wrap! {
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#func
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}
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})
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}
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