V2.2.x Feature Proposal: Additional Language Constructs

V2.2.x feature proposal for additional language constructs:

Here are few proposal for new language features. The definition is not fully formal, and not just high level.

Feature: Consts

Declare a struct/scenario/modifier member as const and give it a value.

For example:

struct jojo:

    const five: int = 5

 

Main Execution Starting Point and container: top  , top.main

The language today does not define the main entry point for execution. It is proposed to add a "top.main" scenario for that. The initial scenario that is run is always the scenario type top.main that has a single instance in the system that is called top.main.

In addition, we can discuss the relation between this container and global data.

Global Modifiers

One can define a modifier with the syntax: global modifier <modifier-name>. The modifier is instantiated automatically for every actor of that type.

 

Native methods !!!

 

One can define native methods in osc and write their code in osc:

def m() is:

   ...native-method-code...

And the relevant native method code items 

 

List library expressions

A list of methods like elements that access/change and operate on lists.

Some examples:

var x: list of int

x.map(it.as(string)) #returns a list of strings with the same elements as strings 

x.has(it > 5) #returns true iff x has an item greater than 5

 

String library expressions

A list of methods like elements that operate on strings. Some examples:

var x: string = "r, g, b"

x.split(",") #returns a list of strings ["r", " g", " b"]

x.replace(", ", "-") # replaces every occurrence of ", " with "-" result: "r-g-b"