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add typed syntax editor constructor API
| -rw-r--r-- | crates/syntax/src/syntax_editor.rs | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/crates/syntax/src/syntax_editor.rs b/crates/syntax/src/syntax_editor.rs index 84559753a2..a21a5dd3aa 100644 --- a/crates/syntax/src/syntax_editor.rs +++ b/crates/syntax/src/syntax_editor.rs @@ -14,7 +14,7 @@ use std::{ use rowan::TextRange; use rustc_hash::FxHashMap; -use crate::{SyntaxElement, SyntaxNode, SyntaxToken}; +use crate::{AstNode, SyntaxElement, SyntaxNode, SyntaxToken}; mod edit_algo; mod edits; @@ -53,6 +53,26 @@ impl SyntaxEditor { (editor, root) } + pub fn new_typed<T>(root: &T) -> (Self, T) + where + T: AstNode, + { + let mut root = root.syntax().clone(); + + if root.parent().is_some() || root.is_mutable() { + root = root.clone_subtree() + }; + + let editor = Self { + root: root.clone(), + changes: Vec::new(), + mappings: SyntaxMapping::default(), + annotations: Vec::new(), + }; + + (editor, T::cast(root).unwrap()) + } + pub fn add_annotation(&mut self, element: impl Element, annotation: SyntaxAnnotation) { self.annotations.push((element.syntax_element(), annotation)) } |