stage2 更多的工具库

stage2/utils/map.spl

@@ -6,6 +6,7 @@
 type .{ .Error, .Status, .make } = @import("error.spl");
 type .{ .Vec } = @import("vec.spl");
 type .{ .ByteView } = @import("byte_view.spl");
+type .{ .hash_usize, .eq_usize, .hash_view, .eq_view } = @import("hash.spl");
 type .{ .copy } = @import("../sys/mem.spl");
 
 // 槽位状态：0=EMPTY，1=OCCUPIED，2=DELETED（墓碑，仅在扩容重哈希时清除）。
@@ -239,15 +240,6 @@ fn take(source: *Map): Map {
 
 // ---- 测试辅助 ----
 
-fn hash_usize(key: *u8): usize {
-    var value = (key as *usize).*;
-    ret value * 2654435761;
-}
-
-fn eq_usize(a: *u8, b: *u8): bool {
-    ret (a as *usize).* == (b as *usize).*;
-}
-
 fn expect_ok(result: Status) {
     match result {
         .Ok => {},
@@ -391,21 +383,6 @@ fn test_take_and_self_put() {
     drop(&moved);
 }
 
-fn hash_view(key: *u8): usize {
-    var view = (key as *ByteView).*;
-    var h: usize = 14695981039346656037;
-    var i: usize = 0;
-    while i < view.len {
-        h = (h ^ (view.ptr[i] as usize)) * 1099511628211;
-        i = i + 1;
-    }
-    ret h;
-}
-
-fn eq_view(a: *u8, b: *u8): bool {
-    ret ByteView.eq((a as *ByteView).*, (b as *ByteView).*);
-}
-
 fn test_byte_view_keys() {
     var m = new(@sizeof(ByteView), @alignof(ByteView), @sizeof(i32), @alignof(i32),
                 hash_view, eq_view);