code/src/ast_inspector.ts

1 import * as vscode from 'vscode';
8 export class AstInspector implements vscode.HoverProvider, vscode.DefinitionProvider, Disposable {
9     private readonly astDecorationType = vscode.window.createTextEditorDecorationType({
10         borderColor: new vscode.ThemeColor('rust_analyzer.syntaxTreeBorder'),
21         const buf: [vscode.Range, vscode.Range][] = [];  constant
38         ctx.pushCleanup(vscode.languages.registerHoverProvider({ scheme: 'rust-analyzer' }, this));
39         ctx.pushCleanup(vscode.languages.registerDefinitionProvider({ language: "rust" }, this));
40 …     vscode.workspace.onDidCloseTextDocument(this.onDidCloseTextDocument, this, ctx.subscriptions);
41 …   vscode.workspace.onDidChangeTextDocument(this.onDidChangeTextDocument, this, ctx.subscriptions);
42 …vscode.window.onDidChangeVisibleTextEditors(this.onDidChangeVisibleTextEditors, this, ctx.subscrip…
50     private onDidChangeTextDocument(event: vscode.TextDocumentChangeEvent) {
56     private onDidCloseTextDocument(doc: vscode.TextDocument) {
62     private onDidChangeVisibleTextEditors(editors: vscode.TextEditor[]) {
70     private findAstTextEditor(): undefined | vscode.TextEditor {
71 …    return vscode.window.visibleTextEditors.find(it => it.document.uri.scheme === 'rust-analyzer');
83 …provideDefinition(doc: vscode.TextDocument, pos: vscode.Position): vscode.ProviderResult<vscode.De…
95         astEditor.selection = new vscode.Selection(astFileRange.start, astFileRange.end);
106 …provideHover(doc: vscode.TextDocument, hoverPosition: vscode.Position): vscode.ProviderResult<vsco…
120         return new vscode.Hover(["```rust\n" + rustSourceCode + "\n```"], astFileRange);
123     private findAstNodeRange(astLine: vscode.TextLine): vscode.Range {
127         return new vscode.Range(begin, end);
130 …  private parseRustTextRange(doc: vscode.TextDocument, astLine: string): undefined | vscode.Range {
138         return new vscode.Range(begin, end);
143     cache?: { doc: vscode.TextDocument; offset: number; line: number };
145     positionAt(doc: vscode.TextDocument, targetOffset: number): vscode.Position {
146         if (doc.eol === vscode.EndOfLine.LF) {