Timer t = new Timer("Parse Program");
try {
SourcePosition start = getTreeStartLocation();
ImmutableList<ParseTree> sourceElements = parseGlobalSourceElements();
eat(TokenType.END_OF_FILE);
t.end();
return new ProgramTree(
getTreeLocation(start), sourceElements, commentRecorder.getComments());
} catch (StackOverflowError e) {
reportError("Too deep recursion while parsing");
return null;