47 lines
1.0 KiB
Rust
47 lines
1.0 KiB
Rust
use proc_macro2::TokenStream;
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use quote::{quote, ToTokens};
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use syn::LitStr;
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pub struct Doc {
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pub(crate) hidden: bool,
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fragments: Vec<LitStr>,
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}
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impl Doc {
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pub fn new() -> Self {
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Doc {
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hidden: false,
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fragments: Vec::new(),
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}
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}
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pub fn push(&mut self, lit: LitStr) {
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self.fragments.push(lit);
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}
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#[allow(dead_code)] // only used by cxx-build, not cxxbridge-macro
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pub fn is_empty(&self) -> bool {
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self.fragments.is_empty()
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}
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#[allow(dead_code)] // only used by cxx-build, not cxxbridge-macro
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pub fn to_string(&self) -> String {
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let mut doc = String::new();
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for lit in &self.fragments {
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doc += &lit.value();
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doc.push('\n');
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}
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doc
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}
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}
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impl ToTokens for Doc {
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fn to_tokens(&self, tokens: &mut TokenStream) {
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let fragments = &self.fragments;
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tokens.extend(quote! { #(#[doc = #fragments])* });
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if self.hidden {
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tokens.extend(quote! { #[doc(hidden)] });
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}
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}
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}
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