# HG changeset patch
# User Mike Becker <universe@uap-core.de>
# Date 1702912447 -3600
# Node ID 741a2040fa332c7d00fac40d0c5d09082b151258
# Parent  4523f6d425129c8f1ca0c8ca055520a5e7320922
make cx_cmp_ptr default comparator for pointer lists - relates to #340

diff -r 4523f6d42512 -r 741a2040fa33 src/array_list.c
--- a/src/array_list.c	Mon Dec 18 16:04:21 2023 +0100
+++ b/src/array_list.c	Mon Dec 18 16:14:07 2023 +0100
@@ -27,6 +27,7 @@
  */
 
 #include "cx/array_list.h"
+#include "cx/compare.h"
 #include <assert.h>
 #include <string.h>
 
@@ -522,13 +523,14 @@
 
     list->base.cl = &cx_array_list_class;
     list->base.allocator = allocator;
-    list->base.cmpfunc = comparator;
     list->capacity = initial_capacity;
 
     if (item_size > 0) {
         list->base.item_size = item_size;
+        list->base.cmpfunc = comparator;
     } else {
         item_size = sizeof(void *);
+        list->base.cmpfunc = comparator == NULL ? cx_cmp_ptr : comparator;
         cxListStorePointers((CxList *) list);
     }
 
diff -r 4523f6d42512 -r 741a2040fa33 src/cx/array_list.h
--- a/src/cx/array_list.h	Mon Dec 18 16:04:21 2023 +0100
+++ b/src/cx/array_list.h	Mon Dec 18 16:14:07 2023 +0100
@@ -152,12 +152,14 @@
  * Allocates an array list for storing elements with \p item_size bytes each.
  *
  * If \p item_size is CX_STORE_POINTERS, the created list will be created as if
- * cxListStorePointers() was called immediately after creation.
+ * cxListStorePointers() was called immediately after creation and the compare
+ * function will be automatically set to cx_cmp_ptr(), if none is given.
  *
  * @param allocator the allocator for allocating the list memory
  * (if \c NULL the cxDefaultAllocator will be used)
  * @param comparator the comparator for the elements
- * (if \c NULL sort and find functions will not work)
+ * (if \c NULL, and the list is not storing pointers, sort and find
+ * functions will not work)
  * @param item_size the size of each element in bytes
  * @param initial_capacity the initial number of elements the array can store
  * @return the created list
@@ -177,7 +179,8 @@
  * set it immediately after creation or use cxArrayListCreate().
  *
  * If \p item_size is CX_STORE_POINTERS, the created list will be created as if
- * cxListStorePointers() was called immediately after creation.
+ * cxListStorePointers() was called immediately after creation and the compare
+ * function will be automatically set to cx_cmp_ptr().
  *
  * @param item_size the size of each element in bytes
  * @param initial_capacity the initial number of elements the array can store
diff -r 4523f6d42512 -r 741a2040fa33 src/cx/linked_list.h
--- a/src/cx/linked_list.h	Mon Dec 18 16:04:21 2023 +0100
+++ b/src/cx/linked_list.h	Mon Dec 18 16:14:07 2023 +0100
@@ -54,12 +54,14 @@
  * Allocates a linked list for storing elements with \p item_size bytes each.
  *
  * If \p item_size is CX_STORE_POINTERS, the created list will be created as if
- * cxListStorePointers() was called immediately after creation.
+ * cxListStorePointers() was called immediately after creation and the compare
+ * function will be automatically set to cx_cmp_ptr(), if none is given.
  *
  * @param allocator the allocator for allocating the list nodes
  * (if \c NULL the cxDefaultAllocator will be used)
  * @param comparator the comparator for the elements
- * (if \c NULL sort and find functions will not work)
+ * (if \c NULL, and the list is not storing pointers, sort and find
+ * functions will not work)
  * @param item_size the size of each element in bytes
  * @return the created list
  */
@@ -77,7 +79,8 @@
  * after list creation or use cxLinkedListCreate().
  *
  * If \p item_size is CX_STORE_POINTERS, the created list will be created as if
- * cxListStorePointers() was called immediately after creation.
+ * cxListStorePointers() was called immediately after creation and the compare
+ * function will be automatically set to cx_cmp_ptr().
  *
  * @param item_size the size of each element in bytes
  * @return the created list
diff -r 4523f6d42512 -r 741a2040fa33 src/linked_list.c
--- a/src/linked_list.c	Mon Dec 18 16:04:21 2023 +0100
+++ b/src/linked_list.c	Mon Dec 18 16:14:07 2023 +0100
@@ -28,6 +28,7 @@
 
 #include "cx/linked_list.h"
 #include "cx/utils.h"
+#include "cx/compare.h"
 #include <string.h>
 #include <assert.h>
 
@@ -915,11 +916,12 @@
 
     list->base.cl = &cx_linked_list_class;
     list->base.allocator = allocator;
-    list->base.cmpfunc = comparator;
 
     if (item_size > 0) {
         list->base.item_size = item_size;
+        list->base.cmpfunc = comparator;
     } else {
+        list->base.cmpfunc = comparator == NULL ? cx_cmp_ptr : comparator;
         cxListStorePointers((CxList *) list);
     }
 
diff -r 4523f6d42512 -r 741a2040fa33 tests/test_list.cpp
--- a/tests/test_list.cpp	Mon Dec 18 16:04:21 2023 +0100
+++ b/tests/test_list.cpp	Mon Dec 18 16:14:07 2023 +0100
@@ -1021,7 +1021,7 @@
     CxList *list = autofree(cxLinkedListCreateSimple(CX_STORE_POINTERS));
     ASSERT_NE(list, nullptr);
     EXPECT_EQ(list->item_size, sizeof(void *));
-    EXPECT_EQ(list->cmpfunc, nullptr);
+    EXPECT_EQ(list->cmpfunc, cx_cmp_ptr);
     EXPECT_EQ(list->allocator, cxDefaultAllocator);
     EXPECT_EQ(list->simple_destructor, nullptr);
     EXPECT_EQ(list->advanced_destructor, nullptr);
@@ -1059,7 +1059,7 @@
 TEST_F(PointerArrayList, cxArrayListCreateSimpleForPointers) {
     CxList *list = autofree(cxArrayListCreateSimple(CX_STORE_POINTERS, 8));
     ASSERT_NE(list, nullptr);
-    EXPECT_EQ(list->cmpfunc, nullptr);
+    EXPECT_EQ(list->cmpfunc, cx_cmp_ptr);
     EXPECT_EQ(list->allocator, cxDefaultAllocator);
     EXPECT_EQ(list->item_size, sizeof(void *));
     EXPECT_TRUE(cxListIsStoringPointers(list));