GUI hangs when intellisense opens that shows specific function doc comment

[mgroenhoff]

Issue Type: Bug

When going from this.CONSUME to this.CONSUME1 the GUI hangs when trying to show the function do comment

// index.js
const { Parser } = require('chevrotain');
new Parser().CONSUME // when typing "1" after this it hangs

I tried to find out what caused the hang and if i remove the <-- in the this.CONSUME2(Identifier); // <-- here we use CONSUME2 because the terminal part in the comment below it does not crash anymore.

// This file is a typings file from the chevrotain module (https://github.com/SAP/chevrotain)
// node_modules/chevrotain/lib/chevrotain.d.ts
    /**
     *
     * A Parsing DSL method use to consume a single terminal Token.
     * a Token will be consumed, IFF the next token in the token vector matches <tokType>.
     * otherwise the parser will attempt to perform error recovery.
     *
     * The index in the method name indicates the unique occurrence of a terminal consumption
     * inside a the top level rule. What this means is that if a terminal appears
     * more than once in a single rule, each appearance must have a difference index.
     *
     * for example:
     *
     * function parseQualifiedName() {
     *    this.CONSUME1(Identifier);
     *    this.MANY(()=> {
     *       this.CONSUME1(Dot);
     *       this.CONSUME2(Identifier); // <-- here we use CONSUME2 because the terminal
     *    });                           //     'Identifier' has already appeared previously in the
     *                                  //     the rule 'parseQualifiedName'
     * }
     *
     * @param tokType - The Type of the token to be consumed.
     * @param options - optional properties to modify the behavior of CONSUME.
     */
    protected CONSUME1(tokType: TokenType, options?: ConsumeMethodOpts): IToken;

VS Code version: Code - Insiders 1.22.0-insider (b753213, 2018-03-22T06:16:52.928Z)
OS version: Windows_NT x64 10.0.16299
This also happens using the latest stable 1.21.1

Reproduces without extensions

[mjbvz]

Caused by catastrophic regular expression backtracking bug in marked. Will update marked version

[mgroenhoff]

Verified using:

Version 1.22.0-insider
Commit a918e7b3ef2feaf2c9fbf003e936084eaaf53f76
Date 2018-03-26T05:16:34.852Z
Shell 1.7.12
Renderer 58.0.3029.110
Node 7.9.0
Architecture x64

Thanks for the quick fix!

[dbaeumer]

Marking as verified based on #46428 (comment)