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-rw-r--r--lib/mlibc/options/posix/generic/search.cpp151
1 files changed, 0 insertions, 151 deletions
diff --git a/lib/mlibc/options/posix/generic/search.cpp b/lib/mlibc/options/posix/generic/search.cpp
deleted file mode 100644
index e6f8c1d..0000000
--- a/lib/mlibc/options/posix/generic/search.cpp
+++ /dev/null
@@ -1,151 +0,0 @@
-
-#include <bits/ensure.h>
-#include <search.h>
-#include <stddef.h>
-#include <new>
-#include <mlibc/allocator.hpp>
-#include <frg/stack.hpp>
-#include <stdlib.h>
-
-struct node {
- const void *key;
- void *a[2];
- int h;
-};
-
-namespace {
- int height(struct node *node) {
- return node ? node->h : 0;
- }
-
- int rotate(struct node **nodep, int side) {
- struct node *node = *nodep;
- struct node *x = static_cast<struct node *>(node->a[side]);
- struct node *y = static_cast<struct node *>(x->a[!side]);
- struct node *z = static_cast<struct node *>(x->a[side]);
-
- int height_node = node->h;
- int height_y = height(y);
- if (height_y > height(z)) {
- // Perform double rotation
- node->a[side] = y->a[!side];
- x->a[!side] = y->a[side];
- y->a[!side] = node;
- y->a[side] = x;
- node->h = height_y;
- x->h = height_y;
- y->h = height_y + 1;
- } else {
- // Perform single rotation
- node->a[side] = y;
- x->a[!side] = node;
- node->h = height_y + 1;
- x->h = height_y + 2;
- y = x;
-
- }
- *nodep = y;
- return y->h - height_node;
- }
-
- int balance_tree(struct node **nodep) {
- struct node *node = *nodep;
- int height_a = height(static_cast<struct node *>(node->a[0]));
- int height_b = height(static_cast<struct node *>(node->a[1]));
- if (height_a - height_b < 2) {
- int old = node->h;
- node->h = height_a < height_b ? height_b + 1 : height_a + 1;
- return node->h - old;
- }
-
- return rotate(nodep, height_a < height_b);
- }
-}
-
-void *tsearch(const void *key, void **rootp, int(*compar)(const void *, const void *)) {
- if (!rootp)
- return NULL;
-
- struct node *n = static_cast<struct node *>(*rootp);
- frg::stack<struct node **, MemoryAllocator> nodes(getAllocator());
- nodes.push(reinterpret_cast<struct node **>(rootp));
- int c = 0;
- for (;;) {
- if (!n)
- break;
- c = compar(key, n->key);
- if (!c)
- return n;
- nodes.push(reinterpret_cast<struct node **>(&n->a[c > 0]));
- n = static_cast<struct node *>(n->a[c > 0]);
- }
-
- struct node *insert = static_cast<struct node*>(malloc(sizeof(struct node)));
- if (!insert)
- return NULL;
- insert->key = key;
- insert->a[0] = insert->a[1] = NULL;
- insert->h = 1;
-
- (*nodes.top()) = insert;
- nodes.pop();
- while(nodes.size() && balance_tree(nodes.top())) nodes.pop();
- return insert;
-}
-
-// This implementation is taken from musl
-void *tfind(const void *key, void *const *rootp, int (*compar)(const void *, const void *)) {
- if(!rootp)
- return 0;
-
- struct node *n = (struct node *)*rootp;
- for(;;) {
- if(!n)
- break;
- int c = compar(key, n->key);
- if(!c)
- break;
- n = (struct node *)n->a[c > 0];
- }
- return n;
-}
-
-void *tdelete(const void *, void **, int(*compar)(const void *, const void *)) {
- (void)compar;
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}
-
-void twalk(const void *, void (*action)(const void *, VISIT, int)) {
- (void)action;
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}
-
-void tdestroy(void *, void (*free_node)(void *)) {
- (void)free_node;
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}
-
-void *lsearch(const void *key, void *base, size_t *nelp, size_t width,
- int (*compar)(const void *, const void *)) {
- (void)key;
- (void)base;
- (void)nelp;
- (void)width;
- (void)compar;
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}
-
-void *lfind(const void *key, const void *base, size_t *nelp,
- size_t width, int (*compar)(const void *, const void *)) {
- (void)key;
- (void)base;
- (void)nelp;
- (void)width;
- (void)compar;
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}