1 files changed, 113 insertions, 0 deletions
diff --git a/vendor/github.com/bytedance/sonic/internal/rt/fastmem.go b/vendor/github.com/bytedance/sonic/internal/rt/fastmem.go
new file mode 100644
index 000000000..358ce80ce
--- /dev/null
+++ b/vendor/github.com/bytedance/sonic/internal/rt/fastmem.go
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2021 ByteDance Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package rt
+
+import (
+    `unsafe`
+    `reflect`
+)
+
+//go:nosplit
+func Get16(v []byte) int16 {
+    return *(*int16)((*GoSlice)(unsafe.Pointer(&v)).Ptr)
+}
+
+//go:nosplit
+func Get32(v []byte) int32 {
+    return *(*int32)((*GoSlice)(unsafe.Pointer(&v)).Ptr)
+}
+
+//go:nosplit
+func Get64(v []byte) int64 {
+    return *(*int64)((*GoSlice)(unsafe.Pointer(&v)).Ptr)
+}
+
+//go:nosplit
+func Mem2Str(v []byte) (s string) {
+    (*GoString)(unsafe.Pointer(&s)).Len = (*GoSlice)(unsafe.Pointer(&v)).Len
+    (*GoString)(unsafe.Pointer(&s)).Ptr = (*GoSlice)(unsafe.Pointer(&v)).Ptr
+    return
+}
+
+//go:nosplit
+func Str2Mem(s string) (v []byte) {
+    (*GoSlice)(unsafe.Pointer(&v)).Cap = (*GoString)(unsafe.Pointer(&s)).Len
+    (*GoSlice)(unsafe.Pointer(&v)).Len = (*GoString)(unsafe.Pointer(&s)).Len
+    (*GoSlice)(unsafe.Pointer(&v)).Ptr = (*GoString)(unsafe.Pointer(&s)).Ptr
+    return
+}
+
+func BytesFrom(p unsafe.Pointer, n int, c int) (r []byte) {
+    (*GoSlice)(unsafe.Pointer(&r)).Ptr = p
+    (*GoSlice)(unsafe.Pointer(&r)).Len = n
+    (*GoSlice)(unsafe.Pointer(&r)).Cap = c
+    return
+}
+
+func FuncAddr(f interface{}) unsafe.Pointer {
+    if vv := UnpackEface(f); vv.Type.Kind() != reflect.Func {
+        panic("f is not a function")
+    } else {
+        return *(*unsafe.Pointer)(vv.Value)
+    }
+}
+
+func IndexChar(src string, index int) unsafe.Pointer {
+	return unsafe.Pointer(uintptr((*GoString)(unsafe.Pointer(&src)).Ptr) + uintptr(index))
+}
+
+func IndexByte(ptr []byte, index int) unsafe.Pointer {
+	return unsafe.Pointer(uintptr((*GoSlice)(unsafe.Pointer(&ptr)).Ptr) + uintptr(index))
+}
+
+//go:nosplit
+func GuardSlice(buf *[]byte, n int) {
+	c := cap(*buf)
+	l := len(*buf)
+	if c-l < n {
+		c = c>>1 + n + l
+		if c < 32 {
+			c = 32
+		}
+		tmp := make([]byte, l, c)
+		copy(tmp, *buf)
+		*buf = tmp
+	}
+	return
+}
+
+//go:nosplit
+func Ptr2SlicePtr(s unsafe.Pointer, l int, c int) unsafe.Pointer {
+    slice := &GoSlice{
+        Ptr: s,
+        Len: l,
+        Cap: c,
+    }
+    return unsafe.Pointer(slice)
+}
+
+//go:nosplit
+func StrPtr(s string) unsafe.Pointer {
+    return (*GoString)(unsafe.Pointer(&s)).Ptr
+}
+
+//go:nosplit
+func StrFrom(p unsafe.Pointer, n int64) (s string) {
+    (*GoString)(unsafe.Pointer(&s)).Ptr = p
+    (*GoString)(unsafe.Pointer(&s)).Len = int(n)
+    return
+}
+\ No newline at end of file