优化NbtReader的read_int_array和read_long_array方法的实现

README.md

@@ -7,3 +7,24 @@ writen in rust!
 感谢 @神楽坂柚咲/伊欧/langyo
 
 在编写过程中的帮助（
+
+## 概况
+
+- `shen-nbt1`
+  - 几周的技术积累
+  - 100 mb/s
+
+- `shen-nbt2`
+  - 2个月的技术积累
+  - 500 mb/s
+
+- `shen-nbt3/4`
+  - 半年的技术积累
+  - v3 有单一依赖库
+  - v4 无依赖库
+  - 2000 mb/s
+
+- `shen-nbt5` (编写中)
+  - 一年左右的技术积累
+  - 4000 mb/s ?
+  - 支持 `serde` 序列化/反序列化

shen-nbt5/src/lib.rs

@@ -61,15 +61,41 @@ impl NbtReader<'_> {
     read!(read_u64, u64, 8);
     read!(read_f32, f32, 4, false);
     read!(read_f64, f64, 8, false);
-    pub fn read_bytes(&mut self, len: usize) -> &[u8] {
+
+    pub fn read_u8_array(&mut self, len: usize) -> &[u8] {
         let value = &self.data[self.cursor..self.cursor + len];
         self.cursor += len;
         value
     }
+    pub fn read_i8_array(&mut self, len: usize) -> &[i8] {
+        let value = unsafe {
+            std::slice::from_raw_parts(self.data[self.cursor..].as_ptr() as *const i8, len)
+        };
+        self.cursor += len;
+        value
+    }
+    pub fn read_string(&mut self, len: usize) -> String {
+        let value = String::from_utf8_lossy(&self.data[self.cursor..self.cursor + len]);
+        self.cursor += len;
+        value.into_owned()
+    }
+    pub fn read_int_array(&mut self, len: usize) -> &[i32] {
+        let datas = self.read_u8_array(len * 4);
+        let value = unsafe {
+            std::slice::from_raw_parts(datas.as_ptr() as *const i32, len)
+        };
+    }
+    pub fn read_long_array(&mut self, len: usize) -> &[i64] {
+        let datas = self.read_u8_array(len * 8);
+        let value = unsafe {
+            std::slice::from_raw_parts(datas.as_ptr() as *const i64, len)
+        };
+    }
+
 }
 
 #[derive(Debug, Clone)]
-pub enum NbtValue<'value> {
+pub enum NbtValue {
     // end: 0
     /// 1: Byte
     Byte(i8),
@@ -87,13 +113,15 @@ pub enum NbtValue<'value> {
     ByteArray(Vec<i8>),
     /// 8
     /// 或者叫 u8 array
-    String(&'value str),
+    String(String),
     /// 9
-    List(Vec<NbtValue<'value>>),
+    List(Vec<NbtValue>),
     /// 10
-    Compound(Vec<(String, NbtValue<'value>)>),
+    Compound(Vec<(String, NbtValue)>),
     /// 11
     IntArray(Vec<i32>),
     /// 12
     LongArray(Vec<i64>),
 }
+
+