Remove defect incremental sync handling

Author: razzeee

src/capabilityCalculator.ts

@@ -18,10 +18,6 @@ export class CapabilityCalculator {
     this.clientCapabilities;
 
     return {
-      // Perform incremental syncs
-      // Incremental sync is disabled for now due to not being able to get the
-      // old text in ASTProvider
-      // textDocumentSync: TextDocumentSyncKind.Incremental,
       codeActionProvider: true,
       codeLensProvider: {
         resolveProvider: true,

src/providers/astProvider.ts

@@ -8,7 +8,6 @@ import {
 import { URI } from "vscode-uri";
 import Parser, { Point, SyntaxNode, Tree } from "web-tree-sitter";
 import { ElmWorkspace } from "../elmWorkspace";
-import { Position } from "../position";
 import { IDocumentEvents } from "../util/documentEvents";
 import { ElmWorkspaceMatcher } from "../util/elmWorkspaceMatcher";
 
@@ -50,59 +49,11 @@ export class ASTProvider {
     }
 
     for (const changeEvent of params.contentChanges) {
-      // TODO why doesn't this work anymore?
-      // if (changeEvent.range && changeEvent.rangeLength) {
-      //   // range is range of the change. end is exclusive
-      //   // rangeLength is length of text removed
-      //   // text is new text
-      //   const { range, rangeLength, text } = changeEvent;
-      //   const startIndex: number = range.start.line * range.start.character;
-      //   const oldEndIndex: number = startIndex + rangeLength - 1;
-      //   if (tree) {
-      //     tree.edit({
-      //       // end index for new version of text
-      //       newEndIndex: range.end.line * range.end.character - 1,
-      //       // position in new doc change ended
-      //       newEndPosition: Position.FROM_VS_POSITION(range.end).toTSPosition(),
-
-      //       // end index for old version of text
-      //       oldEndIndex,
-      //       // position in old doc change ended.
-      //       oldEndPosition: this.computeEndPosition(
-      //         startIndex,
-      //         oldEndIndex,
-      //         tree,
-      //       ),
-
-      //       // index in old doc the change started
-      //       startIndex,
-      //       // position in old doc change started
-      //       startPosition: Position.FROM_VS_POSITION(
-      //         range.start,
-      //       ).toTSPosition(),
-      //     });
-      //     tree = this.parser.parse(text, tree);
-      //   }
-      // } else {
       tree = this.parser.parse(changeEvent.text);
-      // }
     }
     if (tree) {
       forest.setTree(document.uri, true, true, tree);
       imports.updateImports(document.uri, tree, forest);
     }
   };
-
-  private computeEndPosition = (
-    startIndex: number,
-    endIndex: number,
-    tree: Tree,
-  ): Point => {
-    const node: SyntaxNode = tree.rootNode.descendantForIndex(
-      startIndex,
-      endIndex,
-    );
-
-    return node.endPosition;
-  };
 }