hyperledger-solang_solang/integration/solana/create_contract.sol

import 'solana';

contract creator {

    function create_child() external {
        print("Going to create child");
        Child.new();

        Child.say_hello();
    }

    function create_seed1(bytes seed, bytes1 bump, uint64 space) external {
        print("Going to create Seed1");
        Seed1.new(seed, bump, space);

        Seed1.say_hello();
    }

    function create_seed2(bytes seed, uint32 space) external {
        print("Going to create Seed2");

        Seed2.new(seed, space);
    }

    function create_child_with_metas(address child, address payer) public {
        print("Going to create child with metas");
        AccountMeta[3] metas = [
            AccountMeta({pubkey: child, is_signer: true, is_writable: true}),
            AccountMeta({pubkey: payer, is_signer: true, is_writable: true}),
            AccountMeta({pubkey: address"11111111111111111111111111111111", is_writable: false, is_signer: false})
        ];

        Child.new{accounts: metas}();        
        Child.use_metas();
    }

    function create_without_annotation() external {
        MyCreature.new();
        MyCreature.say_my_name();
    }
}

@program_id("Chi1d5XD6nTAp2EyaNGqMxZzUjh6NvhXRxbGHP3D1RaT")
contract Child {
    @payer(payer)
    @space(511 + 7)
    constructor() {
        assert(tx.accounts.payer.is_signer);
        assert(tx.accounts.payer.is_writable);
        print("In child constructor");
    }

    function say_hello() pure public {
        print("Hello there");
    }

    function use_metas() pure public {
        print("I am using metas");
    }
}

@program_id("SeedHw4CsFsDEGu2AVwFM1toGXsbAJSKnb7kS8TrLxu")
contract Seed1 {

    @payer(payer)
    constructor(@seed bytes seed, @bump bytes1 bump, @space uint64 space) {
        print("In Seed1 constructor");
    }

    function say_hello() pure public {
        print("Hello from Seed1");
    }
}

@program_id("Seed23VDZ9HFCfKvFwmemB6dpi25n5XjZdP52B2RUmh")
contract Seed2 {
    bytes my_seed;

    @payer(payer)
    @seed("sunflower")
    constructor(@seed bytes seed, @space uint64 space) {
        my_seed = seed;

        print("In Seed2 constructor");
    }

    function check() public view {
        address pda = create_program_address([ "sunflower", my_seed ], address(this));

        if (pda == tx.accounts.dataAccount.key) {
            print("I am PDA.");
        }
    }
}

@program_id("8gTkAidfM82u3DGbKcZpHwL5p47KQA16MDb4WmrHdmF6")
contract MyCreature {
    constructor() {
        print("In child constructor");
    }

    function say_my_name() public pure {
        print("say_my_name");
    }
}