[jira] [Created] (SYSTEMML-525) Treat variable of const str concatenations as const str in read iofilename

["Deron Eriksson (JIRA)" <ji...@apache.org>]

Deron Eriksson created SYSTEMML-525:
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             Summary: Treat variable of const str concatenations as const str in read iofilename
                 Key: SYSTEMML-525
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-525
             Project: SystemML
          Issue Type: Improvement
          Components: Parser
            Reporter: Deron Eriksson
            Priority: Minor


If a string variable value is the result of constant string concatentations, perhaps it should be treated as a constant string since this can be determined at compile time.

{code}
# works
x = "m";
y = ".csv";
b = read(x + y);

# doesn't work
z = "m" + ".csv";
b = read(z);
{code}

The second read statement above generates the following error:
{code}
for read method, parameter iofilename can only be a const string or const string concatenations
{code}

Since the z value results from the concatenation of 2 string constants, I would think it could be treated as a string constant itself.





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