Unnamed repository; edit this file 'description' to name the repository.
Be more strict about supported Paths in generate_enum_variant
PathType path parents don't support this assist
| -rw-r--r-- | crates/ide-assists/src/handlers/generate_enum_variant.rs | 105 |
1 files changed, 85 insertions, 20 deletions
diff --git a/crates/ide-assists/src/handlers/generate_enum_variant.rs b/crates/ide-assists/src/handlers/generate_enum_variant.rs index afbfc74b72..b3dd29b771 100644 --- a/crates/ide-assists/src/handlers/generate_enum_variant.rs +++ b/crates/ide-assists/src/handlers/generate_enum_variant.rs @@ -2,7 +2,7 @@ use hir::{HasSource, HirDisplay, InFile}; use ide_db::assists::{AssistId, AssistKind}; use syntax::{ ast::{self, make, HasArgList}, - AstNode, + match_ast, AstNode, SyntaxNode, }; use crate::assist_context::{AssistContext, Assists}; @@ -33,6 +33,7 @@ use crate::assist_context::{AssistContext, Assists}; // ``` pub(crate) fn generate_enum_variant(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> { let path: ast::Path = ctx.find_node_at_offset()?; + let parent = path_parent(&path)?; if ctx.sema.resolve_path(&path).is_some() { // No need to generate anything if the path resolves @@ -49,19 +50,65 @@ pub(crate) fn generate_enum_variant(acc: &mut Assists, ctx: &AssistContext<'_>) ctx.sema.resolve_path(&path.qualifier()?) { let target = path.syntax().text_range(); - return add_variant_to_accumulator(acc, ctx, target, e, &name_ref, &path); + return add_variant_to_accumulator(acc, ctx, target, e, &name_ref, parent); } None } +#[derive(Debug)] +enum PathParent { + PathExpr(ast::PathExpr), + RecordExpr(ast::RecordExpr), + UseTree(ast::UseTree), +} + +impl PathParent { + fn syntax(&self) -> &SyntaxNode { + match self { + PathParent::PathExpr(it) => it.syntax(), + PathParent::RecordExpr(it) => it.syntax(), + PathParent::UseTree(it) => it.syntax(), + } + } + + fn make_field_list(&self, ctx: &AssistContext<'_>) -> Option<ast::FieldList> { + let scope = ctx.sema.scope(self.syntax())?; + + match self { + PathParent::PathExpr(it) => { + if let Some(call_expr) = it.syntax().parent().and_then(ast::CallExpr::cast) { + make_tuple_field_list(call_expr, ctx, &scope) + } else { + None + } + } + PathParent::RecordExpr(it) => make_record_field_list(it, ctx, &scope), + PathParent::UseTree(_) => None, + } + } +} + +fn path_parent(path: &ast::Path) -> Option<PathParent> { + let parent = path.syntax().parent()?; + + match_ast! { + match parent { + ast::PathExpr(it) => Some(PathParent::PathExpr(it)), + ast::RecordExpr(it) => Some(PathParent::RecordExpr(it)), + ast::UseTree(it) => Some(PathParent::UseTree(it)), + _ => None + } + } +} + fn add_variant_to_accumulator( acc: &mut Assists, ctx: &AssistContext<'_>, target: syntax::TextRange, adt: hir::Enum, name_ref: &ast::NameRef, - path: &ast::Path, + parent: PathParent, ) -> Option<()> { let db = ctx.db(); let InFile { file_id, value: enum_node } = adt.source(db)?.original_ast_node(db)?; @@ -73,7 +120,7 @@ fn add_variant_to_accumulator( |builder| { builder.edit_file(file_id.original_file(db)); let node = builder.make_mut(enum_node); - let variant = make_variant(ctx, name_ref, &path); + let variant = make_variant(ctx, name_ref, parent); node.variant_list().map(|it| it.add_variant(variant.clone_for_update())); }, ) @@ -82,27 +129,14 @@ fn add_variant_to_accumulator( fn make_variant( ctx: &AssistContext<'_>, name_ref: &ast::NameRef, - path: &ast::Path, + parent: PathParent, ) -> ast::Variant { - let field_list = make_field_list(ctx, path); + let field_list = parent.make_field_list(ctx); make::variant(make::name(&name_ref.text()), field_list) } -fn make_field_list(ctx: &AssistContext<'_>, path: &ast::Path) -> Option<ast::FieldList> { - let scope = ctx.sema.scope(&path.syntax())?; - if let Some(call_expr) = - path.syntax().parent().and_then(|it| it.parent()).and_then(ast::CallExpr::cast) - { - make_tuple_field_list(call_expr, ctx, &scope) - } else if let Some(record_expr) = path.syntax().parent().and_then(ast::RecordExpr::cast) { - make_record_field_list(record_expr, ctx, &scope) - } else { - None - } -} - fn make_record_field_list( - record: ast::RecordExpr, + record: &ast::RecordExpr, ctx: &AssistContext<'_>, scope: &hir::SemanticsScope<'_>, ) -> Option<ast::FieldList> { @@ -468,4 +502,35 @@ fn main() { ", ) } + + #[test] + fn use_tree() { + check_assist( + generate_enum_variant, + r" +//- /main.rs +mod foo; +use foo::Foo::Bar$0; + +//- /foo.rs +enum Foo {} +", + r" +enum Foo { + Bar, +} +", + ) + } + + #[test] + fn not_applicable_for_path_type() { + check_assist_not_applicable( + generate_enum_variant, + r" +enum Foo {} +impl Foo::Bar$0 {} +", + ) + } } |