Ocean Optics Jaz Scripting Language and Scripting Engine - Manual (Page 14)

2: Jaz Scripting Engine Architecture
6 013-RD000-000-12- 201010
Symbol Name Type
> Greater than Boolean
< Less than Boolean
:= Assignment Arithmetic
Main Program
The Main Program section typically defines the main logic flow of the script. The Main Program begins
with the keyword START and is terminated with the keyword END. The keyword STOP marks the end of
the script and is logically paired with the keyword SCRIPT. Labels can be placed before a statement to
make that statement a destination for a GoTo statement.
User-defined Procedures
You can define routines to carry out repetitive tasks or other repeatedly used tasks. User-defined
procedures are declared after the body of the main program (i.e., after the END of the Main Program
section). The syntax is:
[Process ProcessName] and is terminated with the keyword END.
To invoke a user-defined procedure, use the following:
CALL ProcessName
A procedure shares the same variables as the main section but it may have its own labels to avoid
confusion. A procedure may not execute a GoTo to a label outside itself. For example, if the Main
Program section has a label ‘A’ and the procedure has a GoTo A then the procedure must also have a
label ‘A’, or it is an error.
Flow Control
Control flow is achieved with GOTO and CALL statements. All loop iteration structures may be realized
with judicious use of labels and GOTO statements. For example a FOR loop might be coded in the
following way:
I := 0
Label FORLOOP
if(I >= N) GOTO ENDFOR
(your calculations here)
I := I + 1
GOTO FORLOOP
Label ENDFOR
(rest of program)