About this task
The Call Hierarchy view is a tree
graphic that displays functions and procedures. This view provides
a way to navigate a large or complex PL/I file that contains many
procedures and assists you with determining the call flow between
the procedures. The Call Hierarchy view provides
information from both a called and caller perspective.
There are two sections
in the
Call Hierarchy view,
- The left column contains the tree structure of the specified function
or procedure
- The right column shows the line number for the code. When you
click a node in the tree structure, the corresponding line number
is displayed.
Restriction: The Call Hierarchy function has
several limitations:
- Only static calls to procedures and functions are supported.
Variable references to function names and procedure names are not
supported.
- Multiple labels for a single procedure or function definition
are not supported.
- Multiple entry points into a procedure are not supported.
- Double-clicking a procedure name when the procedure definition
is in an expanded macro source results in being taken to the macro
call.