// Base sequence class for testbench sequences
class tb_seq_base extends uvm_sequence;
    `uvm_object_utils(tb_seq_base)

    // Constructor
    function new(string name = "tb_seq_base");
        super.new(name);
    endfunction
endclass : tb_seq_base

// ----------------------------------------------------------------------
class axi_m_seq_base extends tb_seq_base;
    tb_env env;

    `uvm_object_utils(axi_m_seq_base)

    // Constructor
    function new(string name = "axi_m_seq_base");
        super.new(name);
    endfunction

    // Task to start the sequence
    virtual task body();
        bit ok = uvm_config_db#(tb_env)::get(uvm_root::get(), "*", "env", env);
    endtask
endclass : axi_m_seq_base

// ----------------------------------------------------------------------
class axi_simple_seq extends axi_m_seq_base;
    `uvm_object_utils(axi_simple_seq)

    // Constructor
    function new(string name = "axi_simple_seq");
        super.new(name);
    endfunction

    // Task to start the sequence
    virtual task body();
        axi_transaction txns[$];
        axi_transaction txn;

        super.body();

        `uvm_info("axi_simple_seq", "Starting simple AXI sequence", UVM_LOW)

        repeat(10) begin
            `uvm_do(txn, env.get_axi_m_sequencer(), -1, {
                addr != {`ADDR_WIDTH{1'b0}};
                data != {`DATA_WIDTH{1'b0}};
                strb == 'hf; // Example byte enable
            });
            `uvm_info("axi_simple_seq", $sformatf("Starting %s transaction [%0s]",
                txn.txn_type.name(), txn.show_tag()), UVM_LOW)
            txns.push_back(txn);
        end

        `uvm_info("axi_simple_seq", $sformatf("Waiting for %0d txns", txns.size()), UVM_LOW)
        foreach (txns[i]) begin
            `uvm_info("axi_simple_seq", $sformatf("Waiting for txn %s", txns[i].show_tag()), UVM_LOW)
            txns[i].wait_for_done();
            `uvm_info("axi_simple_seq", $sformatf("Done waiting for txn %s", txns[i].show_tag()), UVM_LOW)
        end
    endtask
endclass : axi_simple_seq