diff options
Diffstat (limited to '')
| -rw-r--r-- | src/tools/rust-analyzer/crates/syntax/src/ast/edit_in_place.rs | 193 |
1 files changed, 158 insertions, 35 deletions
diff --git a/src/tools/rust-analyzer/crates/syntax/src/ast/edit_in_place.rs b/src/tools/rust-analyzer/crates/syntax/src/ast/edit_in_place.rs index e3e928aec..eadebbe8a 100644 --- a/src/tools/rust-analyzer/crates/syntax/src/ast/edit_in_place.rs +++ b/src/tools/rust-analyzer/crates/syntax/src/ast/edit_in_place.rs @@ -11,7 +11,7 @@ use crate::{ ted::{self, Position}, AstNode, AstToken, Direction, SyntaxKind::{ATTR, COMMENT, WHITESPACE}, - SyntaxNode, + SyntaxNode, SyntaxToken, }; use super::HasName; @@ -248,8 +248,12 @@ impl ast::WhereClause { } } -impl ast::TypeBoundList { - pub fn remove(&self) { +pub trait Removable: AstNode { + fn remove(&self); +} + +impl Removable for ast::TypeBoundList { + fn remove(&self) { match self.syntax().siblings_with_tokens(Direction::Prev).find(|it| it.kind() == T![:]) { Some(colon) => ted::remove_all(colon..=self.syntax().clone().into()), None => ted::remove(self.syntax()), @@ -267,8 +271,8 @@ impl ast::PathSegment { } } -impl ast::UseTree { - pub fn remove(&self) { +impl Removable for ast::UseTree { + fn remove(&self) { for dir in [Direction::Next, Direction::Prev] { if let Some(next_use_tree) = neighbor(self, dir) { let separators = self @@ -282,7 +286,9 @@ impl ast::UseTree { } ted::remove(self.syntax()); } +} +impl ast::UseTree { pub fn get_or_create_use_tree_list(&self) -> ast::UseTreeList { match self.use_tree_list() { Some(it) => it, @@ -373,8 +379,8 @@ impl ast::UseTreeList { } } -impl ast::Use { - pub fn remove(&self) { +impl Removable for ast::Use { + fn remove(&self) { let next_ws = self .syntax() .next_sibling_or_token() @@ -444,8 +450,8 @@ impl ast::Fn { } } -impl ast::MatchArm { - pub fn remove(&self) { +impl Removable for ast::MatchArm { + fn remove(&self) { if let Some(sibling) = self.syntax().prev_sibling_or_token() { if sibling.kind() == SyntaxKind::WHITESPACE { ted::remove(sibling); @@ -506,19 +512,7 @@ impl ast::RecordExprFieldList { let position = match self.fields().last() { Some(last_field) => { - let comma = match last_field - .syntax() - .siblings_with_tokens(Direction::Next) - .filter_map(|it| it.into_token()) - .find(|it| it.kind() == T![,]) - { - Some(it) => it, - None => { - let comma = ast::make::token(T![,]); - ted::insert(Position::after(last_field.syntax()), &comma); - comma - } - }; + let comma = get_or_insert_comma_after(last_field.syntax()); Position::after(comma) } None => match self.l_curly_token() { @@ -579,19 +573,8 @@ impl ast::RecordPatFieldList { let position = match self.fields().last() { Some(last_field) => { - let comma = match last_field - .syntax() - .siblings_with_tokens(Direction::Next) - .filter_map(|it| it.into_token()) - .find(|it| it.kind() == T![,]) - { - Some(it) => it, - None => { - let comma = ast::make::token(T![,]); - ted::insert(Position::after(last_field.syntax()), &comma); - comma - } - }; + let syntax = last_field.syntax(); + let comma = get_or_insert_comma_after(syntax); Position::after(comma) } None => match self.l_curly_token() { @@ -606,12 +589,53 @@ impl ast::RecordPatFieldList { } } } + +fn get_or_insert_comma_after(syntax: &SyntaxNode) -> SyntaxToken { + let comma = match syntax + .siblings_with_tokens(Direction::Next) + .filter_map(|it| it.into_token()) + .find(|it| it.kind() == T![,]) + { + Some(it) => it, + None => { + let comma = ast::make::token(T![,]); + ted::insert(Position::after(syntax), &comma); + comma + } + }; + comma +} + impl ast::StmtList { pub fn push_front(&self, statement: ast::Stmt) { ted::insert(Position::after(self.l_curly_token().unwrap()), statement.syntax()); } } +impl ast::VariantList { + pub fn add_variant(&self, variant: ast::Variant) { + let (indent, position) = match self.variants().last() { + Some(last_item) => ( + IndentLevel::from_node(last_item.syntax()), + Position::after(get_or_insert_comma_after(last_item.syntax())), + ), + None => match self.l_curly_token() { + Some(l_curly) => { + normalize_ws_between_braces(self.syntax()); + (IndentLevel::from_token(&l_curly) + 1, Position::after(&l_curly)) + } + None => (IndentLevel::single(), Position::last_child_of(self.syntax())), + }, + }; + let elements: Vec<SyntaxElement<_>> = vec![ + make::tokens::whitespace(&format!("{}{}", "\n", indent)).into(), + variant.syntax().clone().into(), + ast::make::token(T![,]).into(), + ]; + ted::insert_all(position, elements); + } +} + fn normalize_ws_between_braces(node: &SyntaxNode) -> Option<()> { let l = node .children_with_tokens() @@ -661,6 +685,9 @@ impl<N: AstNode + Clone> Indent for N {} mod tests { use std::fmt; + use stdx::trim_indent; + use test_utils::assert_eq_text; + use crate::SourceFile; use super::*; @@ -714,4 +741,100 @@ mod tests { }", ); } + + #[test] + fn add_variant_to_empty_enum() { + let variant = make::variant(make::name("Bar"), None).clone_for_update(); + + check_add_variant( + r#" +enum Foo {} +"#, + r#" +enum Foo { + Bar, +} +"#, + variant, + ); + } + + #[test] + fn add_variant_to_non_empty_enum() { + let variant = make::variant(make::name("Baz"), None).clone_for_update(); + + check_add_variant( + r#" +enum Foo { + Bar, +} +"#, + r#" +enum Foo { + Bar, + Baz, +} +"#, + variant, + ); + } + + #[test] + fn add_variant_with_tuple_field_list() { + let variant = make::variant( + make::name("Baz"), + Some(ast::FieldList::TupleFieldList(make::tuple_field_list(std::iter::once( + make::tuple_field(None, make::ty("bool")), + )))), + ) + .clone_for_update(); + + check_add_variant( + r#" +enum Foo { + Bar, +} +"#, + r#" +enum Foo { + Bar, + Baz(bool), +} +"#, + variant, + ); + } + + #[test] + fn add_variant_with_record_field_list() { + let variant = make::variant( + make::name("Baz"), + Some(ast::FieldList::RecordFieldList(make::record_field_list(std::iter::once( + make::record_field(None, make::name("x"), make::ty("bool")), + )))), + ) + .clone_for_update(); + + check_add_variant( + r#" +enum Foo { + Bar, +} +"#, + r#" +enum Foo { + Bar, + Baz { x: bool }, +} +"#, + variant, + ); + } + + fn check_add_variant(before: &str, expected: &str, variant: ast::Variant) { + let enum_ = ast_mut_from_text::<ast::Enum>(before); + enum_.variant_list().map(|it| it.add_variant(variant)); + let after = enum_.to_string(); + assert_eq_text!(&trim_indent(expected.trim()), &trim_indent(&after.trim())); + } } |