Specification of Reactive Hardware/Software Systems - Electronic ...

270 Process Part of POOSL
(2’) All class names in Sys p are different.
(3’) All instance variable names in a process-class definition are different.
(4’) All method names within a single process class are different.
(5’) All parameter and local variable names defined in a method definition are different.
(6’) Every variable used in a method body is either an instance variable of the corresponding
process class, a method parameter, or a local method-variable.
(7’) No method body has expression self as its constituent.
(8’) An expression contained in an initial method call does not contain any local variables
or self expressions.
(9’) All instance variables specified between angle brackets in a process class definition
are different. Further, each of these variables is member of the set of all instance
variables of the class.
(10’) The set of communication channels as well as the message interface defined in
a class definition conform to the corresponding instance methods or behaviour
specification. (This condition is formally defined in Subsection 9.5.2.)
(11’) For every method call statement there exists a corresponding method definition.
(12’) For every C pc (PE1 ¥¡ ¡ ¡ ¥ PEr) used as part of the behaviour expression of some cluster
class, there exists a corresponding class definition. Further, C pc (PE1 ¥¡ ¡ ¡ ¥ PEr) does
not contain any variables or self expressions.
(13’) Every expression parameter used in a parameterised behaviour expression is defined
as expression parameter of the corresponding cluster class.
(14’) Parameterised behaviour specifications of cluster classes are not defined (mutual)
recursively.
Conditions concerning the combination of BSpec and Sys p
(15’) For every C pc (E1 ¥¡ ¡ ¡ ¥ Er) used as part of BSpec, there exists a corresponding class
definition in Sys p . Further no expression Ei contains variables or self .
In the remainder of this chapter it will be assumed that SSpecifications denotes the set of
system specifications that satisfy the above context conditions.