Struct(Ase_Error) {
    String msg;
    Ase_Error *next;
};

Struct(Ase_ErrorList) {
    u64 count;
    Ase_Error *first;
    Ase_Error *last;
};

Struct(Ase_Slice) {
    u32 start;
    i32 x1;
    i32 y1;
    i32 x2;
    i32 y2;
    Ase_Slice *next;
};

Struct(Ase_SliceKey) {
    String name;
    u32 num_slices;
    Ase_Slice *slice_head;
    Ase_SliceKey *next;
};

Struct(Ase_Span) {
    String name;
    u32 start;
    u32 end;
    Ase_Span *next;
};

Struct(Ase_Frame) {
    u32 index;
    u32 x1;
    u32 y1;
    u32 x2;
    u32 y2;
    f64 duration;
    Ase_Frame *next;
};

Struct(Ase_DecodedImage) {
    u32 width;
    u32 height;
    u32 *pixels;  /* Array of [width * height] pixels */
    Ase_ErrorList errors;
    b32 success;
};

Struct(Ase_DecodedSheet) {
    Vec2 image_size;
    Vec2 frame_size;
    u32 num_frames;
    u32 num_spans;
    u32 num_slice_keys;
    Ase_Frame *frame_head;
    Ase_Span *span_head;
    Ase_SliceKey *slice_key_head;
    Ase_ErrorList errors;
    b32 success;
};

Ase_DecodedImage ase_decode_image(Arena *arena, String encoded);
Ase_DecodedSheet ase_decode_sheet(Arena *arena, String encoded);