Files
babel/packages/babel-parser/src/parser/index.js
Nicolò Ribaudo 30d507c915 Add TS support to @babel/parser's Scope (#9766)
* [parser] Allow plugins to extend ScopeHandler

* Directly extend Scope

* Don't use new.target to get the ScopeHandler

* [parser] Add TS enum  support to the Scope

* Remove duplicated options in tests

* Fix

* Fix flow

* Rename tests

* Add tests

* Full typescript support in scope

* Remove BIND_SIMPLE_CATCH

SCOPE_SIMPLE_CATCH was used instead

* Export TS types

* Register function declarations

* Fix body-less functions and namespaces

1) Move this.scope.exit() for functions from parseFunctionBody to the callers.
    Otherwise the scope of body-less functions was never closed.
    Also, it is easier to track scope.exit() if it is near to scope.enter()
2) Register namespace ids for export

* Disallow redeclaration of enum with const enum
2019-04-26 14:19:53 +02:00

54 lines
1.6 KiB
JavaScript

// @flow
import type { Options } from "../options";
import type { File, JSXOpeningElement } from "../types";
import type { PluginList } from "../plugin-utils";
import { getOptions } from "../options";
import StatementParser from "./statement";
import { SCOPE_PROGRAM } from "../util/scopeflags";
import ScopeHandler from "../util/scope";
export type PluginsMap = Map<string, { [string]: any }>;
export default class Parser extends StatementParser {
// Forward-declaration so typescript plugin can override jsx plugin
+jsxParseOpeningElementAfterName: (
node: JSXOpeningElement,
) => JSXOpeningElement;
constructor(options: ?Options, input: string) {
options = getOptions(options);
super(options, input);
const ScopeHandler = this.getScopeHandler();
this.options = options;
this.inModule = this.options.sourceType === "module";
this.scope = new ScopeHandler(this.raise.bind(this), this.inModule);
this.plugins = pluginsMap(this.options.plugins);
this.filename = options.sourceFilename;
}
// This can be overwritten, for example, by the TypeScript plugin.
getScopeHandler(): Class<ScopeHandler<*>> {
return ScopeHandler;
}
parse(): File {
this.scope.enter(SCOPE_PROGRAM);
const file = this.startNode();
const program = this.startNode();
this.nextToken();
return this.parseTopLevel(file, program);
}
}
function pluginsMap(plugins: PluginList): PluginsMap {
const pluginMap: PluginsMap = new Map();
for (const plugin of plugins) {
const [name, options] = Array.isArray(plugin) ? plugin : [plugin, {}];
if (!pluginMap.has(name)) pluginMap.set(name, options || {});
}
return pluginMap;
}