private void checkFieldRead(FieldDescriptor fd, boolean expectRepeated) {
if (expectRepeated) {
if (!fd.isRepeated()) {
throw new IllegalArgumentException(
"This field is not repeated and cannot be read with the methods intended for collections or arrays: "
+ fd.getFullName());
}
} else {
if (fd.isRepeated()) {
throw new IllegalArgumentException(
"A repeated field should be read with one of the methods intended for collections or arrays: "
+ fd.getFullName());
}
}
if (!messageContext.markField(fd.getNumber())) {
throw new IllegalStateException("A field cannot be read twice : " + fd.getFullName());
}
if (ctx.getConfiguration().logOutOfSequenceReads()
&& log.isEnabled(Logger.Level.WARN)
&& messageContext.getMaxSeenFieldNumber() > fd.getNumber()) {
log.fieldReadOutOfSequence(fd.getFullName());
}
}
void popContext() {
messageContext = messageContext.getParentContext();
}