public static FunctionNode parseJs(String aJsContent) {
Source source = Source.sourceFor("", aJsContent); // NOI18N
Options options = new Options(null);
ScriptEnvironment env = new ScriptEnvironment(options, null, null);
ErrorManager errors = new ErrorManager();
Parser p = new Parser(env, source, errors);
return p.parse();
}
@Override
public boolean parse(File file, ParserOptions options) throws IOException {
final PrintWriter err =
options.isPrintError()
? options.getProgressWriter()
: new PrintWriter(new OutputStreamWriter(new ByteArrayOutputStream()));
final ScriptEnvironment env =
new ScriptEnvironment(
new jdk.nashorn.internal.runtime.options.Options(file.getAbsolutePath()), err, err);
final Source src = Source.sourceFor(file.getName(), file);
final ErrorManager em = new ErrorManager(err);
final Parser p = new Parser(env, src, em);
final FunctionNode node = p.parse();
return !em.hasErrors();
}
/**
* Extracts the comments tokens from a JavaScript source.
*
* @param aSource a source
* @return a list of comment tokens
*/
public static List<Long> getCommentsTokens(String aSource) {
TokenStream tokens = new TokenStream();
Lexer lexer = new Lexer(Source.sourceFor("", aSource), tokens); // NOI18N
long t;
TokenType tt = TokenType.EOL;
int i = 0;
List<Long> commentsTokens = new ArrayList<>();
while (tt != TokenType.EOF) {
// Get next token in nashorn's parser way
while (i > tokens.last()) {
if (tokens.isFull()) {
tokens.grow();
}
lexer.lexify();
}
t = tokens.get(i++);
tt = Token.descType(t);
if (tt == TokenType.COMMENT) {
commentsTokens.add(t);
}
}
return commentsTokens;
}