[performance] cache library performance enhancements (updates go-structr => v0.2.0) (#2575)

* update go-structr => v0.2.0

* update readme

* whoops, fix the link

vendor/codeberg.org/gruf/go-mangler/helpers.go

@@ -1,144 +0,0 @@
-package mangler
-
-import (
-	"reflect"
-	"unsafe"
-)
-
-type (
-	// serializing interfacing types.
-	stringer        interface{ String() string }
-	binarymarshaler interface{ MarshalBinary() ([]byte, error) }
-	textmarshaler   interface{ MarshalText() ([]byte, error) }
-	jsonmarshaler   interface{ MarshalJSON() ([]byte, error) }
-)
-
-func append_uint16(b []byte, u uint16) []byte {
-	return append(b, // LE
-		byte(u),
-		byte(u>>8),
-	)
-}
-
-func append_uint32(b []byte, u uint32) []byte {
-	return append(b, // LE
-		byte(u),
-		byte(u>>8),
-		byte(u>>16),
-		byte(u>>24),
-	)
-}
-
-func append_uint64(b []byte, u uint64) []byte {
-	return append(b, // LE
-		byte(u),
-		byte(u>>8),
-		byte(u>>16),
-		byte(u>>24),
-		byte(u>>32),
-		byte(u>>40),
-		byte(u>>48),
-		byte(u>>56),
-	)
-}
-
-func deref_ptr_mangler(mangle Mangler, count int) rMangler {
-	return func(buf []byte, v reflect.Value) []byte {
-		for i := 0; i < count; i++ {
-			// Check for nil
-			if v.IsNil() {
-				buf = append(buf, '0')
-				return buf
-			}
-
-			// Further deref ptr
-			buf = append(buf, '1')
-			v = v.Elem()
-		}
-
-		// Mangle fully deref'd ptr
-		return mangle(buf, v.Interface())
-	}
-}
-
-func deref_ptr_rmangler(mangle rMangler, count int) rMangler {
-	return func(buf []byte, v reflect.Value) []byte {
-		for i := 0; i < count; i++ {
-			// Check for nil
-			if v.IsNil() {
-				buf = append(buf, '0')
-				return buf
-			}
-
-			// Further deref ptr
-			buf = append(buf, '1')
-			v = v.Elem()
-		}
-
-		// Mangle fully deref'd ptr
-		return mangle(buf, v)
-	}
-}
-
-func array_to_slice_mangler(mangle Mangler) rMangler {
-	return func(buf []byte, v reflect.Value) []byte {
-		// Get slice of whole array
-		v = v.Slice(0, v.Len())
-
-		// Mangle as known slice type
-		return mangle(buf, v.Interface())
-	}
-}
-
-func iter_array_mangler(mangle Mangler) rMangler {
-	return func(buf []byte, v reflect.Value) []byte {
-		n := v.Len()
-		for i := 0; i < n; i++ {
-			buf = mangle(buf, v.Index(i).Interface())
-			buf = append(buf, ',')
-		}
-		if n > 0 {
-			buf = buf[:len(buf)-1]
-		}
-		return buf
-	}
-}
-
-func iter_array_rmangler(mangle rMangler) rMangler {
-	return func(buf []byte, v reflect.Value) []byte {
-		n := v.Len()
-		for i := 0; i < n; i++ {
-			buf = mangle(buf, v.Index(i))
-			buf = append(buf, ',')
-		}
-		if n > 0 {
-			buf = buf[:len(buf)-1]
-		}
-		return buf
-	}
-}
-
-func iter_map_rmangler(kMangle, vMangle rMangler) rMangler {
-	return func(buf []byte, v reflect.Value) []byte {
-		r := v.MapRange()
-		for r.Next() {
-			buf = kMangle(buf, r.Key())
-			buf = append(buf, ':')
-			buf = vMangle(buf, r.Value())
-			buf = append(buf, ',')
-		}
-		if v.Len() > 0 {
-			buf = buf[:len(buf)-1]
-		}
-		return buf
-	}
-}
-
-// iface_value returns the raw value ptr for input boxed within interface{} type.
-func iface_value(a any) unsafe.Pointer {
-	type eface struct {
-		Type  unsafe.Pointer
-		Value unsafe.Pointer
-	}
-	return (*eface)(unsafe.Pointer(&a)).Value
-}