bjoernager/rust
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Change syntax for TyAlias where clauses

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This commit is contained in:
Jack Huey 2021-10-19 18:45:48 -04:00
parent 379e94f5a4
commit c20b4f5584
46 changed files with 394 additions and 255 deletions
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38
compiler/rustc_ast_pretty/src/pprust/state/item.rs
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@ -36,12 +36,16 @@ impl<'a> State<'a> {
ast::ForeignItemKind::TyAlias(box ast::TyAlias {
defaultness,
generics,
where_clauses,
where_predicates_split,
bounds,
ty,
}) => {
self.print_associated_type(
ident,
generics,
*where_clauses,
*where_predicates_split,
bounds,
ty.as_deref(),
vis,
@ -95,11 +99,15 @@ impl<'a> State<'a> {
&mut self,
ident: Ident,
generics: &ast::Generics,
where_clauses: (ast::TyAliasWhereClause, ast::TyAliasWhereClause),
where_predicates_split: usize,
bounds: &ast::GenericBounds,
ty: Option<&ast::Ty>,
vis: &ast::Visibility,
defaultness: ast::Defaultness,
) {
let (before_predicates, after_predicates) =
generics.where_clause.predicates.split_at(where_predicates_split);
self.head("");
self.print_visibility(vis);
self.print_defaultness(defaultness);
@ -107,12 +115,13 @@ impl<'a> State<'a> {
self.print_ident(ident);
self.print_generic_params(&generics.params);
self.print_type_bounds(":", bounds);
self.print_where_clause(&generics.where_clause);
self.print_where_clause_parts(where_clauses.0.0, before_predicates);
if let Some(ty) = ty {
self.space();
self.word_space("=");
self.print_type(ty);
}
self.print_where_clause_parts(where_clauses.1.0, after_predicates);
self.word(";");
self.end(); // end inner head-block
self.end(); // end outer head-block
@ -211,6 +220,8 @@ impl<'a> State<'a> {
ast::ItemKind::TyAlias(box ast::TyAlias {
defaultness,
ref generics,
where_clauses,
where_predicates_split,
ref bounds,
ref ty,
}) => {
@ -218,6 +229,8 @@ impl<'a> State<'a> {
self.print_associated_type(
item.ident,
generics,
where_clauses,
where_predicates_split,
bounds,
ty,
&item.vis,
@ -496,10 +509,19 @@ impl<'a> State<'a> {
ast::AssocItemKind::Const(def, ty, body) => {
self.print_item_const(ident, None, ty, body.as_deref(), vis, *def);
}
ast::AssocItemKind::TyAlias(box ast::TyAlias { defaultness, generics, bounds, ty }) => {
ast::AssocItemKind::TyAlias(box ast::TyAlias {
defaultness,
generics,
where_clauses,
where_predicates_split,
bounds,
ty,
}) => {
self.print_associated_type(
ident,
generics,
*where_clauses,
*where_predicates_split,
bounds,
ty.as_deref(),
vis,
@ -566,14 +588,22 @@ impl<'a> State<'a> {
}
fn print_where_clause(&mut self, where_clause: &ast::WhereClause) {
if where_clause.predicates.is_empty() && !where_clause.has_where_token {
self.print_where_clause_parts(where_clause.has_where_token, &where_clause.predicates);
}
crate fn print_where_clause_parts(
&mut self,
has_where_token: bool,
predicates: &[ast::WherePredicate],
) {
if predicates.is_empty() && !has_where_token {
return;
}
self.space();
self.word_space("where");
for (i, predicate) in where_clause.predicates.iter().enumerate() {
for (i, predicate) in predicates.iter().enumerate() {
if i != 0 {
self.word_space(",");
}