/**
* Given a field type, return the wire type.
*
* @returns One of the {@code WIRETYPE_} constants defined in {@link WireFormat}.
*/
static int getWireFormatForFieldType(final WireFormat.FieldType type, boolean isPacked) {
if (isPacked) {
return WireFormat.WIRETYPE_LENGTH_DELIMITED;
} else {
return type.getWireType();
}
}
/**
* Verifies that the given object is of the correct type to be a valid value for the given field.
* (For repeated fields, this checks if the object is the right type to be one element of the
* field.)
*
* @throws IllegalArgumentException The value is not of the right type.
*/
private static void verifyType(final WireFormat.FieldType type, final Object value) {
if (value == null) {
throw new NullPointerException();
}
boolean isValid = false;
switch (type.getJavaType()) {
case INT:
isValid = value instanceof Integer;
break;
case LONG:
isValid = value instanceof Long;
break;
case FLOAT:
isValid = value instanceof Float;
break;
case DOUBLE:
isValid = value instanceof Double;
break;
case BOOLEAN:
isValid = value instanceof Boolean;
break;
case STRING:
isValid = value instanceof String;
break;
case BYTE_STRING:
isValid = value instanceof ByteString;
break;
case ENUM:
// TODO(kenton): Caller must do type checking here, I guess.
isValid = value instanceof Internal.EnumLite;
break;
case MESSAGE:
// TODO(kenton): Caller must do type checking here, I guess.
isValid = value instanceof MessageLite;
break;
}
if (!isValid) {
// TODO(kenton): When chaining calls to setField(), it can be hard to
// tell from the stack trace which exact call failed, since the whole
// chain is considered one line of code. It would be nice to print
// more information here, e.g. naming the field. We used to do that.
// But we can't now that FieldSet doesn't use descriptors. Maybe this
// isn't a big deal, though, since it would only really apply when using
// reflection and generally people don't chain reflection setters.
throw new IllegalArgumentException(
"Wrong object type used with protocol message reflection.");
}
}
public WireFormat.JavaType getLiteJavaType() {
return type.getJavaType();
}
