I'm playing around with Q's new .Q.trp, and the debug object which you're given in case of an error.
From what I see, the debug object contains a string representation of the source code where the error occured, as well as the offset in that string where the error was triggered.
For example,
{
something: 123;
x: 123; ThisThrowsAnError[456;789]; y: 123;
}[]
when executing above code, the debug object would contain this code in its entirity, as well as the offset pointing to (the beginning of) ThisThrowsAnError[].
My question is - based on this information, how can I extract the entire statement that cuased the error?
For example, in above example, I'd like to extract "ThisThorwsAnError[456;789]".
Things I've thought of so far...
Extract string from the offset, until the end of line. Doesn't work though, as there might be other statements in the same line (e.g. the "y: 123" above)
Parse the source code (literally, with "parse"). But then what..? The output could be anything (e.g. a lambda or a statement list), and then whatever it is still needs to be mapped back to the source locations somehow
Appreciate any ideas! Thanks
Related
So I have created a huge screen that essentially just shows the robot status for every robot in this factory (individually)… At the very end of the project, they decided they want one object on the screen that blinks if any of the 300 robots fault. I am trying to think of a way to make this work. Maybe a global script of some kind? Problem is, I do not do much scripting in Cimplicity, so any help is appreciated.
All the points that are currently used on this screen (to indicate a fault) have very similar names… as in, the beginning is the same… so I was thinking of a script that could maybe recognize if a bit is high based on PART of it's string name characteristic. The end will change a little each time, but I am sure there is a way to only look for part of a string and negate the rest. If the end has to be hard coded, that's fine.
You can use a Python script in Cimplicity.
I will not go into detail on the use of python in Cimplicity, which is well described in the documentation indicated above.
Here's an example of what can be done... note that I don't have a way to test it and, of course, this will work if the name of your robots in the declaration follows the format Robot_1, Robot_2, Robot_3 ... Robot_10 ... Robot_300 and it also depends on the Name and the Type of the fault variable... as you didn't define it, I imagine it can be an integer, with ZERO indicating no error. But if you use something other than that, you can easily change it.
import cimplicity
(...)
OneRobotWithFault = False
# Here you get the values and check for fault
for i in range(0, 300):
pointName = f'MyFactory.Robot_{i}.FaultCode'
robotFaultCode = cimplicity.point_get(pointName)
if robotFaultCode > 0:
OneRobotWithFault = True
break
# Set the status to the variable "WeHaveRobotWithFault"
cimplicity.point_set("WeHaveRobotWithFault", OneRobotWithFault)
First, i want to say there are a few questions related to this topic but the answers are not what I'm looking for, those questions are related to files or something else so it shouldn't be count as a duplicated, but if you find a duplicated question makes me know an i will change this.
Description:
I need to print the original variable name passed to a function.
This code is an example to show what i want (Take this code as a starting point if you want):
def print_var_name(var):
original_var_name = do_something_here
print(original_var_name)
var_1 = 'foo'
print_var_name(var_1)
The output should be:
var_1
Thanks you guys!
I cannot and do not know how to retrieve the values of an AST that I generated using the Lark parser.
My grammar is as follows, saved in a .lark file :
start: (un_handle ": ")? AMOUNT "|" p_handle ("," p_handle)* (" \"" MESSAGE* "\"")?
AMOUNT: /[0-9]+(\.[0-9][0-9]?)?/
un_handle: HANDLE
p_handle: HANDLE
HANDLE : /[A-Z][A-Z]/
MESSAGE : /[^"]+/
I then run:
testText = '10|GP "Bananas"'
testTree = parser.parse(testText)
and get:
Tree(start, [Token(AMOUNT, '10'), Tree(p_handle, [Token(HANDLE, 'GP')]), Token(MESSAGE, 'Bananas')])
But, what now?
I realize that I have to probably have to build a transformer, but what methods should I define and what should I call them? I just want to extract the values for AMOUNT, un_handle, p_handle (there may be more than one p_handle), and message into Python variables.
Thank you so much in advance! Have been debugging for hours.
First off, try adding a "line" rule to provide a reference point. Yes, your application does not probably use multiple lines, but it is usually good to include one just in case.
Now, write a subroutine to find each "line" token in the AST, and append it to a list.
Finally, I suggest that you process the resulting list using a subroutine based upon the eval() subroutine in LisPy.
I'm new to using Perl XML::SAX and I encountered a problem with the characters event that is triggered. I'm trying to parse a very large XML file using perl.
My goal is to get the content of each tag (I do not know the tag names - given any xml file, I should be able to crack the record pattern and return every record with its data and tag like Tag:Data).
While working with small files, everything is ok. But when running on a large file, the characters{} event does partial reading of the content. There is no specific pattern in the way it cuts down the reading. Sometimes its the starting few characters of data and sometimes its last few characters and sometimes its just one letter from the actual data.
The Sax Parser is:
$myhandler = MyFilter->new();
$parser = XML::SAX::ParserFactory->parser(Handler => $myhandler);
$parser->parse_file($filename);
And, I have written my own Handler called MyFilter and overridding the character method of the parser.
sub characters {
my ($self, $element) = #_;
$globalvar = $element->{Data};
print "content is: $globalvar \n";
}
Even this print statement, reads the values partially at times.
I also tried loading the Parsesr Package before calling the $parser->parse() as:
$XML::SAX::ParserPackage = "XML::SAX::ExpatXS";
Stil doesn't work. Could anyone help me out here? Thanks in advance!
Sounds like you need XML::Filter::BufferText.
http://search.cpan.org/dist/XML-Filter-BufferText/BufferText.pm
From the description "One common cause of grief (and programmer error) is that XML parsers aren't required to provide character events in one chunk. They can, but are not forced to, and most don't. This filter does the trivial but oft-repeated task of putting all characters into a single event."
It's very easy to use once you have it installed and will solve your partial character data problem.
I am trying to write some strings to the clipboard in my Eclipse plugin and I have some strange behavior ...
I am using the predefined TextTransfer Transfer-class which should be sufficient for strings?!
My Problem is, that regardless of the number of strings I put in the clipboard only the very last is actually accessible afterwards - I cannot figure out why.
Placing my stuff in the clipboard seems to work, no exceptions. I doing it this way:
Clipboard cb = new Clipboard(Display.getCurrent());
Object[] data = transferObjects.toArray(); //My strings, looks good in debug
Transfer[] transfer = transferHandles.toArray(new Transfer[0]); //as many TextTransfer instances as objects in the data-array
cb.setContents(data, transfer, DND.CLIPBOARD);
cb.dispose();
I receive it this way:
TextTransfer textTransfer = TextTransfer.getInstance();
Object o = cb.getContents(textTransfer); // "o" contains the value of the above array at position n-1, so only the very last is actually returned
I don't get what I am doing wrong? Does anyone see my error?
May be it is because (from Java-doc):
More than one type of data can be placed on the system clipboard at the same time. Setting the data clears any previous data from the system clipboard, regardless of type.