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Lexical Elements of the DEC Text Processing Utility Language
Syntax
LOCAL variable-name [[,...]];
Local variables may also be declared in unbound code. Such variables are
accessible only within that unbound code.
Unbound code can occur in the following places:
•
Module initialization code
This occurs after all procedure declarations within a module but before the
ENDMODULE statement.
•
Executable code
This occurs after all module and procedure declarations in a file but before
the end of file.
The following example shows a complete compilation unit. This unit contains
a module named mmm that, in turn, contains a procedure bat and some
initialization code mmm_module_init, a procedure bar defined outside the module,
and some unbound code at the end of the file. In each of these sections of code, a
local variable X is defined. The variable is displayed using the MESSAGE built-in
procedure.
MODULE mmm IDENT "mmm"
PROCEDURE bat;
! Declare procedure "bat" in module "mmm"
LOCAL
X; ! "X" is local to procedure "bat"
X := "Within procedure bat, within module mmm";
MESSAGE (X);
ENDPROCEDURE; ! End procedure "bat"
LOCAL
X;
X := "Starting or ending the module init code";
MESSAGE (X);
bat;
MESSAGE (X);
ENDMODULE;
! End module "mmm"
PROCEDURE bar
! Declare procedure "bar"
LOCAL
X;
X := "In procedure bar, which is outside all modules";
MESSAGE (X);
ENDPROCEDURE;
! End procedure "bar"
LOCAL
X;
X := "Starting or ending the unbound, non-init code";
MESSAGE (X);
mmm_module_init;
bat;
bar;
MESSAGE (X);
EXIT;
Lexical Elements of the DEC Text Processing Utility Language 4–31
! "X" is local to
! procedure "mmm_module_init"
! "X" is local to procedure "bar"
! "X" is local to the unbound code...
4.9 Reserved Words
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