/* Context definition for llrb example */

#define ALLOCATE_SIZE 100

enum Code {
    Code1,
    Code2,
    Code3,
    Code4,
    Code5,
    Code6,
    Allocator,
    Put,
    Replace,
    Insert,
    Compare,
    Create,
    RotateL,
    RotateR,
    ColorFlip,
    FixUp,
    ChangeRef,
    Get,
    Traverse,
    Exit,
};

enum UniqueData {
    Allocate,
    Tree,
    Node,
    Next,
};

struct Context {
    enum Code *next;
    int current;
    int codeNum;
    __code (**code) (struct Context*);
    void* heapStart;
    void* heap;
    long heapLimit;
    int dataNum;
    union Data **data;
};

union Data {
    struct Comparable { // inteface
        enum Code compare;
        union Data* data;
    }
    struct Count {
        enum Code next;
        long count;
    } count;
    struct Tree {
        enum Code next;
        struct Node* root;
        struct Node* current;
        struct Node* prev;
        int result;
    } tree;
    struct Node {
        enum Code next;
        int key; // comparable data segment
        int value;
        enum Color {
            Red,
            Black,
        } color;
        struct Node* left;
        struct Node* right;
    } node;
    struct Allocate {
        enum Code next;
        long size;
    } allocate;
};