Keen Yee Liau
a8e2ee1343
Now that the Angular LS is a proper tsserver plugin, it does not make sense for it to maintain its own language service API. This is part one of the effort to remove our custom LanguageService interface. This interface is cumbersome because we have to do two transformations: ng def -> ts def -> lsp definition The TS LS interface is more comprehensive, so this allows the Angular LS to return more information. PR Close #31972
48 lines
1.7 KiB
TypeScript
48 lines
1.7 KiB
TypeScript
/**
|
|
* @license
|
|
* Copyright Google Inc. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by an MIT-style license that can be
|
|
* found in the LICENSE file at https://angular.io/license
|
|
*/
|
|
|
|
import * as ts from 'typescript';
|
|
import {TemplateInfo} from './common';
|
|
import {locateSymbol} from './locate_symbol';
|
|
|
|
// Reverse mappings of enum would generate strings
|
|
const SYMBOL_SPACE = ts.SymbolDisplayPartKind[ts.SymbolDisplayPartKind.space];
|
|
const SYMBOL_PUNC = ts.SymbolDisplayPartKind[ts.SymbolDisplayPartKind.punctuation];
|
|
|
|
export function getHover(info: TemplateInfo): ts.QuickInfo|undefined {
|
|
const symbolInfo = locateSymbol(info);
|
|
if (!symbolInfo) {
|
|
return;
|
|
}
|
|
const {symbol, span} = symbolInfo;
|
|
const containerDisplayParts: ts.SymbolDisplayPart[] = symbol.container ?
|
|
[
|
|
{text: symbol.container.name, kind: symbol.container.kind},
|
|
{text: '.', kind: SYMBOL_PUNC},
|
|
] :
|
|
[];
|
|
return {
|
|
kind: symbol.kind as ts.ScriptElementKind,
|
|
kindModifiers: '', // kindModifier info not available on 'ng.Symbol'
|
|
textSpan: {
|
|
start: span.start,
|
|
length: span.end - span.start,
|
|
},
|
|
// this would generate a string like '(property) ClassX.propY'
|
|
// 'kind' in displayParts does not really matter because it's dropped when
|
|
// displayParts get converted to string.
|
|
displayParts: [
|
|
{text: '(', kind: SYMBOL_PUNC}, {text: symbol.kind, kind: symbol.kind},
|
|
{text: ')', kind: SYMBOL_PUNC}, {text: ' ', kind: SYMBOL_SPACE}, ...containerDisplayParts,
|
|
{text: symbol.name, kind: symbol.kind},
|
|
// TODO: Append type info as well, but Symbol doesn't expose that!
|
|
// Ideally hover text should be like '(property) ClassX.propY: string'
|
|
],
|
|
};
|
|
}
|