feat: add commit_fix and fix to napi

fix #1158

crates/napi/src/sg_node.rs

@@ -3,7 +3,8 @@ use napi::bindgen_prelude::*;
 use napi_derive::napi;
 
 use super::NapiConfig;
-use crate::doc::JsDoc;
+use crate::doc::{JsDoc, Wrapper};
+use ast_grep_core::source::Content;
 
 #[napi(object)]
 pub struct Edit {
@@ -302,15 +303,36 @@ impl SgNode {
  let inner = reference.inner.prev_all().map(NodeMatch::from);
  Self::from_iter_to_vec(&reference, env, inner)
  }
+}
 
+/// Edit API
+#[napi]
+impl SgNode {
  #[napi]
- pub fn commit_edits(
- &self,
- _reference: Reference<SgNode>,
- _env: Env,
- _edits: Vec<Edit>,
- ) -> Result<String> {
- todo!()
+ pub fn replace(&self, text: String) -> Edit {
+ let byte_range = self.inner.range();
+ Edit {
+ position: byte_range.start as u32,
+ deleted_length: byte_range.len() as u32,
+ inserted_text: text,
+ }
+ }
+
+ #[napi]
+ pub fn commit_edits(&self, edits: Vec<Edit>) -> String {
+ let mut new_content = Vec::new();
+ let text = self.text();
+ let old_content = Wrapper::decode_str(&text);
+ let mut start = self.inner.range().start;
+ for diff in edits {
+ new_content.extend(&old_content[start..diff.position as usize]);
+ let bytes = Wrapper::decode_str(&diff.inserted_text);
+ new_content.extend(&*bytes);
+ start = (diff.position + diff.deleted_length) as usize;
+ }
+ // add trailing statements
+ new_content.extend(&old_content[start..]);
+ Wrapper::encode_bytes(&new_content).to_string()
  }
 }