Technical data

8. Documentation for Developers

Communication with the User: warning, error, fatal_error

Using these three functions users may be warned, signalized an errors or stop the test imme-

diately. The syntax is as follows:

• warning "text"

• error "text"

• fatal_error "text"

All strings passed to these funtions are subject of variable substitution (Page 300).

Assignments

If for any reason a temporary variable is required it can be created by “set var [= value]”.

The variable can not be a conﬁguration variable!

If you omit the “= value” part the variable

is simply set to “yes” so it may be tested in an if-statement. If an assignment part is given,

anything may be speciﬁed after the equal sign: normal variables, indexed variables, numbers,

strings and version numbers.

Please note that by the assignment also the type of the temporary variable is deﬁned. If

a number is assigned mkfli4l “remembers” that the variable contains a number and later on

allows calculations with it. Trying to do calculations with variables of other types will fail.

Example:

set i=1 # OK, i is a numeric variable

set j=i+1 # OK, j is a numeric variable and contains the value 2

set i="1" # OK, i now is a string variable

set j=i+1 # Error "You can't use a non-numeric ID in a numeric

# context. Check type of operand."

# --> no calculations with strings!

You may also deﬁne temporary arrays (see below). Example:

set prim_%[1]=2

set prim_%[2]=3

set prim_%[3]=5

warning "${prim_n}"

The number of array elements is kept by mkfli4l in the variable prim_n. The code above

hence leads to the following output:

Warning: 3

If the right side of an assignment is a string constant, it is subject of variable substitution

(Page 300) at the time of assignment. The following example demonstrates this. The code:

This is a desired restriction: Check scripts are not able to change the user conﬁguration.

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