TokenStream

java.lang.Object
- com.google.javascript.rhino.TokenStream

```
public final class TokenStream
extends java.lang.Object
```
This class implements the JavaScript scanner.
It is based on the C source files jsscan.c and jsscan.h in the jsref package.
IMPORTANT: As of 2018-03-09 it is still not possible to use Java 8 features in this file due to limitations on some internal Google projects that depend on it.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static boolean`	`isJSIdentifier(java.lang.String s)`
`static boolean`	`isKeyword(java.lang.String name)`	Is the string an ES3 keyword?

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - isKeyword
```
public static boolean isKeyword(java.lang.String name)
```
    Is the string an ES3 keyword?
    Keywords for versions of JavaScript after ES3 are not included, because the parser would reject valid ES3 code that happened to newer keywords if we did that.
    Since isKeyword() is used repeatedly in scanning, for performance reasons, it is implemented to do the minimum number of character comparisons to ascertain whether the given name is a keyword, instead of doing string search of the name against JS keywords.
  - isJSIdentifier
```
public static boolean isJSIdentifier(java.lang.String s)
```