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16 lines
427 B
16 lines
427 B
2 years ago
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use proc_macro::TokenStream;
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use quote::quote;
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use syn::{parse_macro_input, LitStr};
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/// Construct a utf-16 array literal from a utf-8 [`str`] literal.
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#[proc_macro]
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pub fn utf16(input: TokenStream) -> TokenStream {
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let literal = parse_macro_input!(input as LitStr);
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let utf8 = literal.value();
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let utf16 = utf8.encode_utf16().collect::<Vec<_>>();
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quote! {
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[#(#utf16),*].as_slice()
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}
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.into()
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}
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