Visara Master Console Center Scripting Guide Uživatelský manuál stáhnout pdf (Strana 34)

Chapter 3 Script Syntax

Scripting Guide 34

General Script Syntax Information

General Syntax of a Script

The general structure of a script file is as follows:

// comments

PARMS var1, var2, ..., varN

statement

...

statement // comment

RETURN value

Structuring a Script

When writing scripts:

 Any pre-defined MCC script item (for example, function, command, or

manifest constant) is a reserved keyword.

 The script compiler is case insensitive except for string literals:

− $MyVariable is the same as $myvariable

− “IEF ERROR MSG” is different from “IEF Error msg”

 Each part of a multi-part statement must be on a separate line. For

example, the following line is incorrect:

IF (%A < %B) %A := %B ENDIF

It must be split into three lines:

IF (%A < %B)

%A := %B

ENDIF

 It is not required to assign return values from MCC functions or user

scripts to variables. If a return value is not assigned or is not used in

an expression, it simply disappears. However, ignoring return values

is not good programming.

 Only one statement is allowed on each line (comments are not

considered statements).

 The maximum number of characters per line is 2048.

 The number of lines per script is unlimited.

 The column starting position of each statement is optional. However,

we strongly recommend following a good program indenting standard

(for example, indenting steps, or IF logic).

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Visara Master Console Center Scripting Guide Uživatelský manuál Strana 34