a68b854734
* Inline lots of methods that were only used once * Create a separate error case for missing headers
42 lines
1.3 KiB
Rust
42 lines
1.3 KiB
Rust
//! Functions to aid the `Api::to_tokens` method.
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use std::collections::BTreeSet;
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use proc_macro2::{Span, TokenStream};
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use proc_macro_crate::{crate_name, FoundCrate};
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use quote::quote;
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use syn::{AttrStyle, Attribute, Ident, Lifetime};
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/// Generates a `TokenStream` of lifetime identifiers `<'lifetime>`.
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pub(crate) fn unique_lifetimes_to_tokens<'a, I: IntoIterator<Item = &'a Lifetime>>(
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lifetimes: I,
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) -> TokenStream {
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let lifetimes = lifetimes.into_iter().collect::<BTreeSet<_>>();
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if lifetimes.is_empty() {
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TokenStream::new()
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} else {
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let lifetimes = quote! { #( #lifetimes ),* };
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quote! { < #lifetimes > }
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}
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}
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pub(crate) fn is_valid_endpoint_path(string: &str) -> bool {
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string.as_bytes().iter().all(|b| (0x21..=0x7E).contains(b))
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}
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pub(crate) fn import_ruma_api() -> TokenStream {
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if let Ok(FoundCrate::Name(possibly_renamed)) = crate_name("ruma-api") {
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let import = Ident::new(&possibly_renamed, Span::call_site());
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quote! { ::#import }
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} else if let Ok(FoundCrate::Name(possibly_renamed)) = crate_name("ruma") {
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let import = Ident::new(&possibly_renamed, Span::call_site());
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quote! { ::#import::api }
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} else {
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quote! { ::ruma_api }
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}
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}
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pub(crate) fn is_cfg_attribute(attr: &Attribute) -> bool {
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attr.style == AttrStyle::Outer && attr.path.is_ident("cfg")
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}
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