package main

import (
	"database/sql"
)

// Collection generic interface which things can be added to.
type Collection[T any] interface {
	Add(T)
}

// Slice generic slice implementation of a Collection
type Slice[T any] []*T

func (s *Slice[T]) Add(t *T) {
	*s = append(*s, t)
}

type Scanner interface {
	Scan(...interface{}) error
}

type Mapper[T any] func(s Scanner, t T) error

	}

	return s, nil
}

// parseIPv4Slow parses and returns an IPv4 address in dotted quad
// form, e.g. "192.168.0.1". It is slow but easy to read, and the
// reference implementation against which we compare faster
// implementations for correctness.
func parseIPv4Slow(s string) (Addr, error) {
	fs := strings.Split(s, ".")
	if len(fs) != 4 {
		return Addr{}, fmt.Errorf("netaddr.ParseIP(%q): invalid IP address", s)
	}

	// init-time configuration
	cmd := testenv.Command(t, testGo, "help", "documentation")
	// Unset GO111MODULE so that the 'go get' section matches
	// the default 'go get' implementation.
	cmd.Env = append(cmd.Environ(), "GO111MODULE=")
	cmd.Stderr = new(strings.Builder)
	out, err := cmd.Output()
	if err != nil {
		t.Fatalf("%v: %v\n%s", cmd, err, cmd.Stderr)
	}

#include "textflag.h"

#ifdef GOARCH_mips
#define MOVWHI  MOVWL
#define MOVWLO  MOVWR
#else
#define MOVWHI  MOVWR
#define MOVWLO  MOVWL
#endif

// See memclrNoHeapPointers Go doc for important implementation constraints.

// func memclrNoHeapPointers(ptr unsafe.Pointer, n uintptr)
TEXT runtime·memclrNoHeapPointers(SB),NOSPLIT,$0-8
	MOVW	n+4(FP), R2
	MOVW	ptr+0(FP), R1

	SGTU	$4, R2, R3
	ADDU	R2, R1, R4

Interested users will have to evaluate for themselves whether the code
is useful for their own purposes.

---

This directory holds the core of the BoringCrypto implementation
as well as the build scripts for the module itself: syso/*.syso.

syso/goboringcrypto_linux_amd64.syso is built with:

	GOARCH=amd64 ./build.sh

syso/goboringcrypto_linux_arm64.syso is built with:

package runtime

import (
	"internal/runtime/atomic"
	"unsafe"
)

// This is based on the former libgo/runtime/netpoll_select.c implementation
// except that it uses poll instead of select and is written in Go.
// It's also based on Solaris implementation for the arming mechanisms

//go:cgo_import_dynamic libc_poll poll "libc.a/shr_64.o"
//go:linkname libc_poll libc_poll

var libc_poll libFunc

	Range(func(key, value any) (shouldContinue bool))
	Clear()
}

var (
	_ mapInterface = &RWMutexMap{}
	_ mapInterface = &DeepCopyMap{}
)

// RWMutexMap is an implementation of mapInterface using a sync.RWMutex.
type RWMutexMap struct {
	mu    sync.RWMutex
	dirty map[any]any
}

func (m *RWMutexMap) Load(key any) (value any, ok bool) {
	m.mu.RLock()
	value, ok = m.dirty[key]

		t.Skip("skipping in -short mode")
	}
	check := func(t *testing.T, mu [][]trace.MutatorUtil) {
		mmuCurve := trace.NewMMUCurve(mu)

		// Test the optimized implementation against the "obviously
		// correct" implementation.
		for window := time.Nanosecond; window < 10*time.Second; window *= 10 {
			want := mmuSlow(mu[0], window)
			got := mmuCurve.MMU(window)
			if !aeq(want, got) {

	panic("unimplemented")
}

// Cutover reports the number of failures of IndexByte we should tolerate
// before switching over to Index.
// n is the number of bytes processed so far.
// See the bytes.Index implementation for details.
func Cutover(n int) int {
	panic("unimplemented")

// around low-level block cipher implementations.
// See https://csrc.nist.gov/groups/ST/toolkit/BCM/current_modes.html
// and NIST Special Publication 800-38A.
package cipher

// A Block represents an implementation of block cipher
// using a given key. It provides the capability to encrypt
// or decrypt individual blocks. The mode implementations
// extend that capability to streams of blocks.