Refactoring of schemars_derive

schemars_derive/src/doc_attrs.rs

@@ -1,65 +0,0 @@
-use syn::{Attribute, Lit::Str, Meta::NameValue, MetaNameValue};
-
-pub fn get_title_and_desc_from_docs(attrs: &[Attribute]) -> (Option<String>, Option<String>) {
-    let docs = match get_docs(attrs) {
-        None => return (None, None),
-        Some(docs) => docs,
-    };
-
-    if docs.starts_with('#') {
-        let mut split = docs.splitn(2, '\n');
-        let title = split
-            .next()
-            .unwrap()
-            .trim_start_matches('#')
-            .trim()
-            .to_owned();
-        let maybe_desc = split.next().and_then(merge_description_lines);
-        (none_if_empty(title), maybe_desc)
-    } else {
-        (None, merge_description_lines(&docs))
-    }
-}
-
-fn merge_description_lines(docs: &str) -> Option<String> {
-    let desc = docs
-        .trim()
-        .split("\n\n")
-        .filter_map(|line| none_if_empty(line.trim().replace('\n', " ")))
-        .collect::<Vec<_>>()
-        .join("\n\n");
-    none_if_empty(desc)
-}
-
-fn get_docs(attrs: &[Attribute]) -> Option<String> {
-    let docs = attrs
-        .iter()
-        .filter_map(|attr| {
-            if !attr.path.is_ident("doc") {
-                return None;
-            }
-
-            let meta = attr.parse_meta().ok()?;
-            if let NameValue(MetaNameValue { lit: Str(s), .. }) = meta {
-                return Some(s.value());
-            }
-
-            None
-        })
-        .collect::<Vec<_>>()
-        .iter()
-        .flat_map(|a| a.split('\n'))
-        .map(str::trim)
-        .skip_while(|s| *s == "")
-        .collect::<Vec<_>>()
-        .join("\n");
-    none_if_empty(docs)
-}
-
-fn none_if_empty(s: String) -> Option<String> {
-    if s.is_empty() {
-        None
-    } else {
-        Some(s)
-    }
-}