Generic containers moved into a separate module

src/trusted/generic_container/container_list.c

+/*
+ * Copyright 2008 The Native Client Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can
+ * be found in the LICENSE file.
+ */
+
+#include "native_client/src/trusted/generic_container/container_list.h"
+
+#include "native_client/src/include/portability.h"
+
+static struct NaClContainerVtbl const  kNaClContainerListVtbl = {
+  NaClContainerListInsert,
+  NaClContainerListFind,
+  NaClContainerListDtor,
+  sizeof(struct NaClContainerListIter),
+  NaClContainerListIterCtor,
+};
+
+
+/*
+ * functor_obj is the comparison functor, and is the first argument to
+ * cmp_fn as the "self" (or more commonly "this") argument.  arguably
+ * we should create an explicit object with a vtable containing the
+ * single comparison function pointer, but this is so simple that that
+ * seems overkill.
+ */
+int NaClContainerListCtor(struct NaClContainerList  *self,
+                          struct NaClCmpFunctor     *cmp_functor) {
+  self->cmp_functor = cmp_functor;
+  self->head = 0;
+
+  self->base.vtbl = &kNaClContainerListVtbl;
+  return 1;
+}
+
+
+int NaClContainerListIterAtEnd(struct NaClContainerIter *vself) {
+  struct NaClContainerListIter  *self = (struct NaClContainerListIter *) vself;
+
+  return *self->cur == 0;
+}
+
+
+void *NaClContainerListIterStar(struct NaClContainerIter *vself) {
+  struct NaClContainerListIter  *self = (struct NaClContainerListIter *) vself;
+
+  return (*self->cur)->datum;
+}
+
+
+void NaClContainerListIterIncr(struct NaClContainerIter  *vself) {
+  struct NaClContainerListIter  *self = (struct NaClContainerListIter *) vself;
+
+  self->cur = &(*self->cur)->next;
+}
+
+
+void NaClContainerListIterErase(struct NaClContainerIter  *vself) {
+  struct NaClContainerListIter  *self = (struct NaClContainerListIter *) vself;
+  struct NaClItemList           *doomed = *self->cur;
+  struct NaClItemList           *next = (*self->cur)->next;
+
+  *self->cur = next;
+  free(doomed->datum);
+  free(doomed);
+}
+
+
+void *NaClContainerListIterExtract(struct NaClContainerIter  *vself) {
+  struct NaClContainerListIter  *self = (struct NaClContainerListIter *) vself;
+  struct NaClItemList           *doomed = *self->cur;
+  struct NaClItemList           *next = (*self->cur)->next;
+  void                          *datum;
+
+  *self->cur = next;
+  datum = doomed->datum;
+  free(doomed);
+  return datum;
+}
+
+static struct NaClContainerIterVtbl const   kNaClContainerListIterVtbl = {
+  NaClContainerListIterAtEnd,
+  NaClContainerListIterStar,
+  NaClContainerListIterIncr,
+  NaClContainerListIterErase,
+  NaClContainerListIterExtract,
+};
+
+
+int NaClContainerListInsert(struct NaClContainer  *vself,
+                            void                  *obj) {
+  struct NaClContainerList    *self = (struct NaClContainerList *) vself;
+  struct NaClItemList         *new_entry = malloc(sizeof *new_entry);
+  struct NaClItemList         **ipp;
+  struct NaClItemList         *ip;
+
+  if (!new_entry)
+    return 0;
+
+  new_entry->datum = obj;
+
+  for (ipp = &self->head; 0 != (ip = *ipp); ipp = &ip->next) {
+    if ((*self->cmp_functor->vtbl->OrderCmp)(self->cmp_functor,
+                                             obj, ip->datum) >= 0) {
+      break;
+    }
+  }
+
+  new_entry->next = ip;
+  *ipp = new_entry;
+  return 1;
+}
+
+
+struct NaClContainerIter  *NaClContainerListFind(
+    struct NaClContainer      *vself,
+    void                      *key,
+    struct NaClContainerIter  *vout) {
+  struct NaClContainerList        *self = (struct NaClContainerList *) vself;
+  struct NaClItemList             **ipp;
+  struct NaClItemList             *ip;
+  struct NaClContainerListIter    *out = (struct NaClContainerListIter *) vout;
+
+  for (ipp = &self->head; (ip = *ipp) != 0; ipp = &ip->next) {
+    if ((*self->cmp_functor->vtbl->OrderCmp)(self->cmp_functor,
+                                             key, ip->datum) == 0) {
+      break;
+    }
+  }
+  out->cur = ipp;
+
+  vout->vtbl = &kNaClContainerListIterVtbl;
+  return vout;
+}
+
+
+void NaClContainerListDtor(struct NaClContainer  *vself) {
+  struct NaClContainerList    *self = (struct NaClContainerList *) vself;
+  struct NaClItemList         *cur, *next;
+
+  for (cur = self->head; cur; cur = next) {
+    next = cur->next;
+    free(cur->datum);
+    free(cur);
+  }
+}
+
+
+int NaClContainerListIterCtor(struct NaClContainer      *vself,
+                              struct NaClContainerIter  *viter) {
+  struct NaClContainerList      *self = (struct NaClContainerList *) vself;
+  struct NaClContainerListIter  *iter = (struct NaClContainerListIter *) viter;
+
+  iter->cur = &self->head;
+
+  viter->vtbl = &kNaClContainerListIterVtbl;
+  return 1;
+}