friend

1. Declaring a definition with friend visibility

2. Declaring a friend module

1. Declaring a definition with friend visibility

Friend is a visibility modifier, that can be atteched to definitions on module level. Where it means that the definition is visible in every friend module where it is imported to.

Example

2. Declaring a friend module

A module can declare his friend modules, for which its friend definition will be visible.

Example

Related keywords:

• public
• private

Example 1:

module module1 {
import from module2 all;

const module2Type c_example1 := 4; //by default public, visible
const module2PublieType c_example2 := 4; //public, visible
const module2FriendType c_example3 := 4; //this is a friend module, visible
const module2PrivateType c_example4 := 4; //ERROR, not visible
}

module module2 {
friend module1;

type integer module2Type;//by default public, visible in every module
public type integer module2PublieType; //public, visible in every module
friend type integer module2FriendType; //friend, visible only in friend modules
private type module2PrivateType; //private, visible only in this module
}