src/pex/node.zig


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const std = @import("std");
const Instruction = @import("instruction.zig").Instruction;

const Self = @This();

instruction: Instruction,
next: ?*Self = null,

pub fn create(instruction: Instruction, node_pool: *std.heap.MemoryPool(Self)) !*Self {
    const node = try node_pool.create();
    node.* = .{ .instruction = instruction };
    return node;
}

pub fn deinit(self: *Self) void {
    if (self.next) |next| {
        next.deinit();
    }
    self.* = undefined;
}

pub fn clone(
    self: *Self,
    node_pool: *std.heap.MemoryPool(Self),
) !*Self {
    const self_clone = try node_pool.create();
    self_clone.instruction = self.instruction;

    if (self.next) |next| {
        self_clone.next = try next.clone(node_pool);
    } else {
        self_clone.next = null;
    }

    return self_clone;
}