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refactor(derive): Shift responsibility for long help

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Ed Page 2022-09-06 11:33:13 -05:00
parent abcee38466
commit a71b2eb8b8
4 changed files with 30 additions and 33 deletions
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2
clap_derive/src/derives/args.rs
View file

@ -299,7 +299,7 @@ pub fn gen_augment(
};
let id = item.id();
let explicit_methods = item.field_methods(true);
let explicit_methods = item.field_methods();
let deprecations = if !override_required {
item.deprecations()
} else {

2
clap_derive/src/derives/value_enum.rs
View file

@ -84,7 +84,7 @@ fn lits(variants: &[(&Variant, Item)]) -> Vec<(TokenStream, Ident)> {
if !matches!(variant.fields, Fields::Unit) {
abort!(variant.span(), "`#[derive(ValueEnum)]` only supports unit variants. Non-unit variants must be skipped");
}
let fields = item.field_methods(false);
let fields = item.field_methods();
let deprecations = item.deprecations();
let name = item.cased_name();
Some((

31
clap_derive/src/item.rs
View file

@ -64,7 +64,7 @@ impl Item {
let parsed_attrs = ClapAttr::parse_all(attrs);
res.infer_kind(&parsed_attrs);
res.push_attrs(&parsed_attrs);
res.push_doc_comment(attrs, "about");
res.push_doc_comment(attrs, "about", true);
res
}
@ -80,7 +80,7 @@ impl Item {
let parsed_attrs = ClapAttr::parse_all(attrs);
res.infer_kind(&parsed_attrs);
res.push_attrs(&parsed_attrs);
res.push_doc_comment(attrs, "about");
res.push_doc_comment(attrs, "about", true);
res
}
@ -131,7 +131,7 @@ impl Item {
res.infer_kind(&parsed_attrs);
res.push_attrs(&parsed_attrs);
if matches!(&*res.kind, Kind::Command(_)) {
res.push_doc_comment(&variant.attrs, "about");
res.push_doc_comment(&variant.attrs, "about", true);
}
match &*res.kind {
@ -174,7 +174,7 @@ impl Item {
res.infer_kind(&parsed_attrs);
res.push_attrs(&parsed_attrs);
if matches!(&*res.kind, Kind::Value) {
res.push_doc_comment(&variant.attrs, "help");
res.push_doc_comment(&variant.attrs, "help", false);
}
res
@ -200,7 +200,7 @@ impl Item {
res.infer_kind(&parsed_attrs);
res.push_attrs(&parsed_attrs);
if matches!(&*res.kind, Kind::Arg(_)) {
res.push_doc_comment(&field.attrs, "help");
res.push_doc_comment(&field.attrs, "help", true);
}
match &*res.kind {
@ -798,7 +798,7 @@ impl Item {
}
}
fn push_doc_comment(&mut self, attrs: &[Attribute], name: &str) {
fn push_doc_comment(&mut self, attrs: &[Attribute], name: &str, supports_long_help: bool) {
use syn::Lit::*;
use syn::Meta::*;
@ -816,7 +816,11 @@ impl Item {
})
.collect();
self.doc_comment = process_doc_comment(comment_parts, name, !self.verbatim_doc_comment);
let (short, long) = process_doc_comment(comment_parts, name, !self.verbatim_doc_comment);
self.doc_comment.extend(short);
if supports_long_help {
self.doc_comment.extend(long);
}
}
fn set_kind(&mut self, kind: Sp<Kind>) {
@ -865,22 +869,11 @@ impl Item {
}
/// generate methods on top of a field
pub fn field_methods(&self, supports_long_help: bool) -> proc_macro2::TokenStream {
pub fn field_methods(&self) -> proc_macro2::TokenStream {
let methods = &self.methods;
match supports_long_help {
true => {
let doc_comment = &self.doc_comment;
quote!( #(#doc_comment)* #(#methods)* )
}
false => {
let doc_comment = self
.doc_comment
.iter()
.filter(|mth| mth.name != "long_help");
quote!( #(#doc_comment)* #(#methods)* )
}
}
}
pub fn deprecations(&self) -> proc_macro2::TokenStream {
let deprecations = &self.deprecations;

24
clap_derive/src/utils/doc_comments.rs
View file

@ -8,7 +8,11 @@ use crate::item::Method;
use quote::{format_ident, quote};
use std::iter;
pub fn process_doc_comment(lines: Vec<String>, name: &str, preprocess: bool) -> Vec<Method> {
pub fn process_doc_comment(
lines: Vec<String>,
name: &str,
preprocess: bool,
) -> (Option<Method>, Option<Method>) {
// multiline comments (`/** ... */`) may have LFs (`\n`) in them,
// we need to split so we could handle the lines correctly
//
@ -31,7 +35,7 @@ pub fn process_doc_comment(lines: Vec<String>, name: &str, preprocess: bool) ->
}
if lines.is_empty() {
return vec![];
return (None, None);
}
let short_name = format_ident!("{}", name);
@ -49,10 +53,10 @@ pub fn process_doc_comment(lines: Vec<String>, name: &str, preprocess: bool) ->
(short, long)
};
vec![
Method::new(short_name, quote!(#short)),
Method::new(long_name, quote!(#long)),
]
(
Some(Method::new(short_name, quote!(#short))),
Some(Method::new(long_name, quote!(#long))),
)
} else {
let short = if preprocess {
let s = merge_lines(&lines);
@ -61,10 +65,10 @@ pub fn process_doc_comment(lines: Vec<String>, name: &str, preprocess: bool) ->
lines.join("\n")
};
vec![
Method::new(short_name, quote!(#short)),
Method::new(long_name, quote!(None)),
]
(
Some(Method::new(short_name, quote!(#short))),
Some(Method::new(long_name, quote!(None))),
)
}
}