// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package net

import (
	"context"
	"errors"
	"internal/bytealg"
	"internal/itoa"
	"internal/stringslite"
	"io"
	"os"
)

// cgoAvailable set to true to indicate that the cgo resolver
// is available on Plan 9. Note that on Plan 9 the cgo resolver

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package regexp_test

import (
	"fmt"
	"regexp"
	"strings"
)

func Example() {
	// Compile the expression once, usually at init time.
	// Use raw strings to avoid having to quote the backslashes.
	var validID = regexp.MustCompile(`^[a-z]+\[[0-9]+\]$`)

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package mime

import (
	"bytes"
	"encoding/base64"
	"errors"
	"fmt"
	"io"
	"strings"
	"unicode"
	"unicode/utf8"
)

// A WordEncoder is an RFC 2047 encoded-word encoder.
type WordEncoder byte

const (

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main_test

import (
	"bufio"
	"bytes"
	cmdcover "cmd/cover"
	"flag"
	"fmt"
	"go/ast"
	"go/parser"
	"go/token"
	"internal/testenv"
	"log"
	"os"
	"os/exec"
	"path/filepath"
	"regexp"
	"strings"
	"sync"
	"testing"
)

const (

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !purego

#include "textflag.h"

// SHA256 block routine. See sha256block.go for Go equivalent.
//
// The algorithm is detailed in FIPS 180-4:
//
//  https://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf

// Wt = Mt; for 0 <= t <= 15

// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package types declares the data types and implements
// the algorithms for type-checking of Go packages. Use
// [Config.Check] to invoke the type checker for a package.
// Alternatively, create a new type checker with [NewChecker]
// and invoke it incrementally by calling [Checker.Files].
//

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !math_big_pure_go

#include "textflag.h"

// This file provides fast assembly versions for the elementary
// arithmetic operations on vectors implemented in arith.go.

// TODO: Consider re-implementing using Advanced SIMD
// once the assembler supports those instructions.

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !plan9

package net

import (
	"fmt"
	"internal/testenv"
	"os"
	"runtime"
	"syscall"
	"testing"
	"time"
)

func (ln *TCPListener) port() string {
	_, port, err := SplitHostPort(ln.Addr().String())
	if err != nil {
		return ""
	}
	return port

// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime_test

import (
	"fmt"
	"internal/abi"
	"internal/syscall/windows/sysdll"
	"internal/testenv"
	"io"
	"math"
	"os"
	"os/exec"
	"path/filepath"
	"reflect"
	"runtime"
	"strconv"
	"strings"
	"syscall"
	"testing"
	"unsafe"
)

// Copyright 2015 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package ppc64asm

import (
	"fmt"
	"strings"
)

// GoSyntax returns the Go assembler syntax for the instruction.
// The pc is the program counter of the first instruction, used for expanding
// PC-relative addresses into absolute ones.