#include "../../../context.h"
#interface "GearsDirectory.h"
#interface "Stack.h"
#interface "Tree.h"
#impl "GearsDirectory.h" as "GearsDirectoryImpl.h"

// ----
// typedef struct GearsDirectoryImpl <> impl GearsDirectory {
//   struct Tree* currentDirectory;
//   struct Stack* directoryStack;
// } GearsDirectoryImpl;
// ----

GearsDirectory* createGearsDirectoryImpl(struct Context* context) {
    struct GearsDirectory* gearsDirectory  = new GearsDirectory();
    struct GearsDirectoryImpl* gears_directory_impl = new GearsDirectoryImpl();
    gearsDirectory->gearsDirectory = (union Data*)gears_directory_impl;

    struct Tree* firstTree = new RedBlackTree();
    gears_directory_impl->currentDirectory = firstTree;
    gears_directory_impl->directoryStack = createSingleLinkedStack(context);
    gearsDirectory->cd2Child = C_cd2ChildGearsDirectoryImpl;
    gearsDirectory->cd2Parent = C_cd2ParentGearsDirectoryImpl;
    return gearsDirectory;
}
__code cd2Child(struct GearsDirectoryImpl* gearsDirectory, __code next(...)) {
    // treeを作る
    struct Tree* tree = new RedBlackTree();
    // currentDirectoryを作ったtreeに変更する
    struct Tree* parentDirectory = gearsDirectory->currentDirectory;
    gearsDirectory->currentDirectory = tree;
    // current treeをstackにpushする
    struct Stack* ds = gearsDirectory->directoryStack;
    goto ds->push(parentDirectory, next(...));
}


__code cd2Parent(struct GearsDirectoryImpl* gearsDirectory, __code next(...)) {
    struct Stack* ds = gearsDirectory->directoryStack;
    goto ds->pop(cd2Parent2);
}

__code cd2Parent2(struct GearsDirectoryImpl* gearsDirectory, struct Tree* tree, __code next(...)) {
    gearsDirectory->currentDirectory = tree;
    goto next(...);
}

__code cd2Parent2_stub(struct Context* context) {
	GearsDirectoryImpl* gearsDirectory = (GearsDirectoryImpl*)GearImpl(context, GearsDirectory, gearsDirectory);
	Tree* tree = Gearef(context, Stack)->data;
	enum Code next = Gearef(context, GearsDirectory)->next;
	goto cd2Parent2(context, gearsDirectory, tree, next);
}