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vihaco_parser_derive/
lib.rs

1// SPDX-FileCopyrightText: 2026 The vihaco Authors
2// SPDX-License-Identifier: MIT
3
4extern crate proc_macro;
5mod attr;
6mod codegen;
7
8use proc_macro::TokenStream;
9use syn::{parse_macro_input, DeriveInput};
10
11#[proc_macro_derive(Parse, attributes(syntax_class, pattern))]
12pub fn derive_parse(input: TokenStream) -> TokenStream {
13    let input = parse_macro_input!(input as DeriveInput);
14    codegen::expand(input).unwrap_or_else(|error| error.into_compile_error().into())
15}
16
17/// Internal parser emitter used by typed dialect declarations.
18#[doc(hidden)]
19#[proc_macro_attribute]
20pub fn __dialect_parsers(root: TokenStream, item: TokenStream) -> TokenStream {
21    codegen::dialect_parsers(root.into(), item.into())
22        .unwrap_or_else(|error| error.into_compile_error())
23        .into()
24}