Function parseObjectKey

src/parser/syntaxes/expressions.ts:638–654

* ```abnf * ObjectKey = IDENT / StringLiteral / Keyword * ```

(s: ITokenStream)

 * ```
 */
function parseObjectKey(s: ITokenStream): string {
	const tokenKind = s.getTokenKind();

	if (tokenKind === TokenKind.Identifier) {
		return s.getTokenValue();
	}

	if (tokenKind === TokenKind.StringLiteral) {
		return s.getTokenValue();
	}

	if (isKeywordTokenKind(tokenKind)) {
		return keywordTokenKindToString(tokenKind);
	}

	throw unexpectedTokenError(tokenKind, s.getPos());
}

/**
 * ```abnf