26 lines
758 B
Rust
26 lines
758 B
Rust
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// force-host
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// edition:2018
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// no-prefer-dynamic
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#![crate_type = "proc-macro"]
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extern crate proc_macro;
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use proc_macro::TokenStream;
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use std::str::FromStr;
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#[proc_macro]
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pub fn number_of_tokens_in_a_prefixed_integer_literal(_: TokenStream) -> TokenStream {
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TokenStream::from_str("hey#123").unwrap().into_iter().count().to_string().parse().unwrap()
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}
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#[proc_macro]
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pub fn number_of_tokens_in_a_prefixed_char_literal(_: TokenStream) -> TokenStream {
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TokenStream::from_str("hey#'a'").unwrap().into_iter().count().to_string().parse().unwrap()
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}
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#[proc_macro]
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pub fn number_of_tokens_in_a_prefixed_string_literal(_: TokenStream) -> TokenStream {
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TokenStream::from_str("hey#\"abc\"").unwrap().into_iter().count().to_string().parse().unwrap()
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}
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