add stl & more efficient scope

2026-07-26 21:08:45 +08:00 · 2021-04-02 22:19:29 +08:00
parent 125fc8a9fe
commit c88620920b
21 changed files with 256 additions and 11154 deletions
@@ -0,0 +1,73 @@
+# lib list.nas
+# valkmjolnir 2021/3/31
+var list=func()
+{
+    var _={begin:nil,end:nil};
+    return
+    {
+        push_back:func(elem)
+        {
+            var tmp={elem:elem,prev:nil,next:nil};
+            if(_.end!=nil)
+            {
+                _.end.next=tmp;
+                tmp.prev=_.end;
+                _.end=tmp;
+            }
+            else
+            {
+                _.begin=tmp;
+                _.end=tmp;
+            }
+            return;
+        },
+        push_front:func(elem)
+        {
+            var tmp={elem:elem,prev:nil,next:nil};
+            if(_.begin!=nil)
+            {
+                _.begin.prev=tmp;
+                tmp.next=_.begin;
+                _.begin=tmp;
+            }
+            else
+            {
+                _.begin=tmp;
+                _.end=tmp;
+            }
+            return;
+        },
+        pop_back:func()
+        {
+            if(_.end!=nil)
+                _.end=_.end.prev;
+            if(_.end==nil)
+                _.begin=nil;
+            else
+                _.end.next=nil;
+            return;
+        },
+        pop_front:func()
+        {
+            if(_.begin!=nil)
+                _.begin=_.begin.next;
+            if(_.begin==nil)
+                _.end=nil;
+            else
+                _.begin.prev=nil;
+            return;
+        },
+        front:func()
+        {
+            if(_.begin!=nil)
+                return _.begin.elem;
+            return nil;
+        },
+        back:func()
+        {
+            if(_.end!=nil)
+                return _.end.elem;
+            return nil;
+        },
+    };
+}