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[utils/buffer]: added generics

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This commit is contained in:
Jean-Philippe Bossuat
2023-10-04 10:36:15 +02:00
parent 7057d01555
commit 4bb5cdbee8
6 changed files with 117 additions and 77 deletions
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86
utils/buffer/reader.go
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@@ -5,9 +5,57 @@ import (
"fmt"
"unsafe"
"github.com/tuneinsight/lattigo/v4/utils"
"golang.org/x/exp/constraints"
)
// ReadAsUint64 reads an uint64 from r and stores the result into c with pointer type casting into type T.
func ReadAsUint64[T constraints.Float | constraints.Integer](r Reader, c *T) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint64(r, (*uint64)(unsafe.Pointer(c)))
}
// ReadAsUint32 reads an uint32 from r and stores the result into c with pointer type casting into type T.
func ReadAsUint32[T constraints.Float | constraints.Integer](r Reader, c *T) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint32(r, (*uint32)(unsafe.Pointer(c)))
}
// ReadAsUint16 reads an uint16 from r and stores the result into c with pointer type casting into type T.
func ReadAsUint16[T constraints.Float | constraints.Integer](r Reader, c *T) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint16(r, (*uint16)(unsafe.Pointer(c)))
}
// ReadAsUint8 reads an uint8 from r and stores the result into c with pointer type casting into type T.
func ReadAsUint8[T constraints.Float | constraints.Integer](r Reader, c *T) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint8(r, (*uint8)(unsafe.Pointer(c)))
}
// ReadAsuint64Slice reads a slice of uint64 from r and stores the result into c with pointer type casting into type T.
func ReadAsuint64Slice[T constraints.Float | constraints.Integer](r Reader, c []T) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint64Slice(r, *(*[]uint64)(unsafe.Pointer(&c)))
}
// ReadAsuint32Slice reads a slice of uint32 from r and stores the result into c with pointer type casting into type T.
func ReadAsuint32Slice[T constraints.Float | constraints.Integer](r Reader, c []T) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint32Slice(r, *(*[]uint32)(unsafe.Pointer(&c)))
}
// ReadAsuint16Slice reads a slice of uint16 from r and stores the result into c with pointer type casting into type T.
func ReadAsuint16Slice[T constraints.Float | constraints.Integer](r Reader, c []T) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint16Slice(r, *(*[]uint16)(unsafe.Pointer(&c)))
}
// ReadAsuint8Slice reads a slice of uint8 from r and stores the result into c with pointer type casting into type T.
func ReadAsuint8Slice[T constraints.Float | constraints.Integer](r Reader, c []T) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint8Slice(r, *(*[]uint8)(unsafe.Pointer(&c)))
}
// Read reads a slice of bytes from r and copies it on c.
func Read(r Reader, c []byte) (n int64, err error) {
slice, err := r.Peek(len(c))
@@ -19,18 +67,6 @@ func Read(r Reader, c []byte) (n int64, err error) {
return int64(nint), err
}
// ReadInt reads an int values from r and stores the result into *c.
func ReadInt(r Reader, c *int) (n int64, err error) {
if c == nil {
return 0, fmt.Errorf("cannot ReadInt: c is nil")
}
nint, err := ReadUint64(r, utils.PointyIntToPointUint64(c))
return int64(nint), err
}
// ReadUint8 reads a byte from r and stores the result into *c.
func ReadUint8(r Reader, c *uint8) (n int64, err error) {
@@ -280,27 +316,3 @@ func ReadUint64Slice(r Reader, c []uint64) (n int64, err error) {
return n + inc64, err
}
// ReadFloat32 reads a float64 from r and stores the result into c.
func ReadFloat32(r Reader, c *float32) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint32(r, (*uint32)(unsafe.Pointer(c)))
}
// ReadFloat32Slice reads a slice of float32 from r and stores the result into c.
func ReadFloat32Slice(r Reader, c []float32) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint32Slice(r, *(*[]uint32)(unsafe.Pointer(&c)))
}
// ReadFloat64 reads a float64 from r and stores the result into c.
func ReadFloat64(r Reader, c *float64) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint64(r, (*uint64)(unsafe.Pointer(c)))
}
// ReadFloat64Slice reads a slice of float64 from r and stores the result into c.
func ReadFloat64Slice(r Reader, c []float64) (n int64, err error) {
/* #nosec G103 -- behavior and consequences well understood */
return ReadUint64Slice(r, *(*[]uint64)(unsafe.Pointer(&c)))
}