74 lines
2.0 KiB
TypeScript
74 lines
2.0 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import { JSONVisitor, visit } from 'jsonc-parser';
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import { Location, Position, Range, TextDocument } from 'vscode';
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export interface INpmScriptReference {
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name: string;
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value: string;
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nameRange: Range;
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valueRange: Range;
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}
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export interface INpmScriptInfo {
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location: Location;
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scripts: INpmScriptReference[];
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}
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export const readScripts = (document: TextDocument, buffer = document.getText()): INpmScriptInfo | undefined => {
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let start: Position | undefined;
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let end: Position | undefined;
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let inScripts = false;
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let buildingScript: { name: string; nameRange: Range } | void;
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let level = 0;
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const scripts: INpmScriptReference[] = [];
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const visitor: JSONVisitor = {
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onError() {
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// no-op
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},
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onObjectBegin() {
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level++;
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},
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onObjectEnd(offset) {
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if (inScripts) {
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end = document.positionAt(offset);
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inScripts = false;
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}
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level--;
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},
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onLiteralValue(value: unknown, offset: number, length: number) {
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if (buildingScript && typeof value === 'string') {
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scripts.push({
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...buildingScript,
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value,
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valueRange: new Range(document.positionAt(offset), document.positionAt(offset + length)),
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});
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buildingScript = undefined;
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}
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},
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onObjectProperty(property: string, offset: number, length: number) {
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if (level === 1 && property === 'scripts') {
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inScripts = true;
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start = document.positionAt(offset);
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} else if (inScripts) {
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buildingScript = {
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name: property,
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nameRange: new Range(document.positionAt(offset), document.positionAt(offset + length))
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};
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}
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},
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};
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visit(buffer, visitor);
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if (start === undefined) {
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return undefined;
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}
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return { location: new Location(document.uri, new Range(start, end ?? start)), scripts };
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};
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