Array type support for array-of-arrays.

[ramakotareddy]

design thoughts of array of arrays.

[ramakotareddy]

Multi dimensional fix size array design options.

-> Implement Rust Function Options:
a) Implement Rust function using Variable arguments for multi dimentional array.
b) Implement different rust functions of different dimentional arrays(e.g: if we support 5 different rust functions till 5
dimensional arrays now).

-> Implement LLVM function call Rust function with variable arguments for multi dimentional arrays.

-> Implement multi dimensional arrays in same class or create new class.

Starting we are planing to implement two dimensional fixed size arrays and extended to n no.of dimensional arrays.

test case:

public function main() {
int [2][3] arr1 = [[4],[5]];
arr1[0][0] = 20;
int c = arr1[0][0];
}

Please share your comments/ideas.

[ayonam]

-> We also need to address two dimensional variable sized arrays.

Also, we need to implement Rust functions that create multi-dimensional arrays of fixed size. Then there needs to be Rust functions that allow for read and write access to these arrays that are created. How we pass the parameters (indices) for these operations needs to be thought out. Especially if we are going to create these functions with variable arguments for handling n-dimensional arrays. Probably a switch case on the number of arguments should tell what should be the code to access a particular element.

Further, how are we planning to handle multi-dimensional arrays with variable lengths? We will not do this in the first implementation, but we need to have the design for that in place. What are the options for us? A vector of vectors is an obvious choice. But are there any more choices?

[ramakotareddy]

@manuranga , @ruvi-d , @KavinduZoysa @Kishanthan Please share your ideas/comments on above design.

[ramakotareddy]

First we are start implementation of two dimensional fixed size array using below design plan.
-> Implement Rust functions of two dimensional fixed size array with array load and store Api's.
->Call these Rust functions from LLVM. We need to pass size of these arrays to rust function.
-> Implementing existed Array class only. (IF we need to create seperate class? Please suggest).

@manuranga , @ruvi-d , @ayonam @Kishanthan Please give your suggestions/ideas.