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Status Delivered
Workspace PL/I Compilers
Created by Guest
Created on Aug 31, 2016

RELATED IDEAS

Allow file processing in recursive algorithms

I have a recursive internal procedure which is reading a dataset which is dynamically allocated from a dsn given in input.
When some specific record is read from this dataset, another dataset is to be read recursively the same way.
There is no theoretical limit to the number of recursions.
I have not been able to code this in pure PL/1 as file declarations are static so they are not compatible with recursion.
Today, the solution I found is to use ILC and the C FOPEN, FREAD and FCLOSE functions.

Idea priority Medium
  • Guest
    Reply
    |     Jan 31, 2017

    this was delivered as part of APAR PI72533 / PTF UI42702 via the FILENEW built-in function

    FILENEW returns a FILE VARIABLE that points to a new file constant in automatic storage.

    The new file variable has the default file attributes unless an argument is specified in which case the attributes in the declaration of that file are used. The new file remains valid and usable only until the termination of the block in which the filenew function is invoked.

    This built-in function has one optional argument which, if specified, must be a file constant or an initialized file variable.

  • Guest
    Reply
    |     Sep 20, 2016

    this could be useful in various contextes

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