/*
 * Implementation of nested-int-list.h.
 */
#include <stdio.h>
#include <stdlib.h>
#include "nested-int-list.h"

NestedIntListElemData* NewIntDatum(int i) {
    NestedIntListElemData* d;
    d = (NestedIntListElemData*) malloc(sizeof(NestedIntListElemData));
    d->data = i;
    d->sublist = null;
    return d;
}

NestedIntListElemData* NewSubListDatum(List* l) {
    NestedIntListElemData* d;
    d = (NestedIntListElemData*) malloc(sizeof(NestedIntListElemData));
    d->sublist = l;
    return d;
}

bool EqualsFunc(void* d1, void* d2) {
    NestedIntListElemData* nd1 = (NestedIntListElemData*) d1;
    NestedIntListElemData* nd2 = (NestedIntListElemData*) d2;

    if ((nd1 == null) || (nd2 == null)) {
	return false;
    }

    if ((nd1->sublist == null) && (nd2->sublist == null) &&
	    (nd1->data == nd2->data)) {
	return true;
    }
    return ListEqualsWithFunction(nd1->sublist, nd2->sublist,
	EqualsFunc);
}

void PrintFunc(void* d) {
    NestedIntListElemData* nd = (NestedIntListElemData*) d;

    if (nd->sublist == null) {
        printf("%d", nd->data);
	fflush(stdout);
    }
    else {
	PrintList(nd->sublist, PrintFunc);
    }
}

void* CopyFunc(void* d) {
    NestedIntListElemData* nd = (NestedIntListElemData*) d;

    if (nd->sublist == null) return nd;
    return NewSubListDatum(CopyListWithFunction(nd->sublist, CopyFunc));
}