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use basic_text_internals::{is_basic_text, is_basic_text_substr};
use proc_macro::TokenStream;
use quote::quote_spanned;
use syn::{parse_macro_input, LitStr};
#[proc_macro]
pub fn text(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as LitStr);
let span = input.span();
if !is_basic_text(&input.value()) {
return (quote_spanned! { span =>
compile_error!("string literal is not Basic Text")
})
.into();
}
(quote_spanned! { span =>
unsafe { ::basic_text::TextStr::from_text_unchecked(#input) }
})
.into()
}
#[proc_macro]
pub fn text_substr(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as LitStr);
let span = input.span();
if !is_basic_text_substr(&input.value()) {
return (quote_spanned! { span =>
compile_error!("string literal is not Basic Text substring")
})
.into();
}
(quote_spanned! { span =>
unsafe { ::basic_text::TextSubstr::from_text_unchecked(#input) }
})
.into()
}