Imports

Import Statement

The import statement in jac, is used to include code from other Jac modules into the current program, allowing for code reuse and modular organization of the codebase. However, as jac is supersetting python, it allows importing of python modules as well as python libraries.

The functionality of this keyword remains same as in regular python but the syntax has been changed for better readability.

import:jac

import:jac module1;
import:jac module2 as mod;
import:jac from module3 { foo as f, bar }

The :jac annotation informs the jac compiler that it should be importing a jac module. The other main difference from regular python syntax is the use of from keyword which is used before the module unlike in python and all entities imported from the module are placed within curly braces.

import:py

import:py os;
import:py datetime as dt;
import:py from math { sqrt as square_root, log }

The above deiscription for importing python modules holds as long as the :py annotation is used.

Include Statement

Include statement in jac allows the programmer to separate their code into different modules and patch them into a single module.

main.jacmain_import.jacglobal_vars.jac

include global_vars;

with entry {
    print('Name:', name);
    print('Age:', age);
}

import:jac from global_vars {name, age}

with entry {
    print('Name:', name);
    print('Age:', age);
}

glob name:str = 'Mason';
glob age:int = 15;

In the above example, the global variables are defined in the 'global_vars.jac' module. As the 'main.jac' module includes the 'global_vars.jac' we can use the variables as if they were defined in 'main.jac'. Similar functionality for using import:jac is shown in the 'main_import.jac' tab, where all required objects must be named in the import statement which can be avoided by using include instead.