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A component declaration is named, and introduces a list of provides and requires interfaces and optionally behaviour or a system.
1) component CompName
// placeholder for component implemented in another programming language
{
provides CompInterface compinterface; // list of provided interfaces
requires UsedInterface usedinterface; // list of required interfaces
}
2) component CompName
{
// component with behaviour
provides CompInterface compinterface; // list of provided interfaces
requires UsedInterface usedinterface; // list of required interfaces
behaviour // behaviour
{ ... }
}
3) component CompName
{
// system component
provides CompInterface compinterface; // list of provided interfaces
requires UsedInterface usedinterface; // list of required interfaces
system // system
{ ... }
}
This component has no implementation. It represents a component implemented in another programming language.
component CompName
{
provides CompInterface compinterface;
}
The following component implements one interface and a straightforward behaviour section.
component Leaf
{
provides ISensor ctrl;
behaviour
{
on ctrl.event(): { }
}
}
A component decomposed into two components where these components are connected via their ports.
component Composition
{
provides CompInterface compinterface;
system
{
Comp1 comp1instance;
Comp2 comp2instance;
comp1instance.port1 <=> comp2instance.port2;
}
}