//
// Provided that T2 is no larger than T1 and that the two share an equivalent
// memory layout, this conversion allows reinterpreting data of one type as
// data of another type. An example is the implementation of
// math.Float64bits:
//
//	func Float64bits(f float64) uint64 {
//		return *(*uint64)(unsafe.Pointer(&f))
//	}
//
// (2) Conversion of a Pointer to a uintptr (but not back to Pointer).
//

type InternalExample struct {
	Name      string
	F         func()
	Output    string
	Unordered bool
}

// RunExamples is an internal function but exported because it is cross-package;
// it is part of the implementation of the "go test" command.
func RunExamples(matchString func(pat, str string) (bool, error), examples []InternalExample) (ok bool) {
	_, ok = runExamples(matchString, examples)
	return ok
}

// license that can be found in the LICENSE file.

//go:build darwin || dragonfly || freebsd || netbsd || openbsd

package runtime

// Integrated network poller (kqueue-based implementation).

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

var (
	kq             int32         = -1
	netpollWakeSig atomic.Uint32 // used to avoid duplicate calls of netpollBreak
)

// the physical function, so there's always at least one frame.
//
// This is typically used as:
//
//	for u, uf := newInlineUnwinder(...); uf.valid(); uf = u.next(uf) { ... }
//
// Implementation note: This is used in contexts that disallow write barriers.
// Hence, the constructor returns this by value and pointer receiver methods
// must not mutate pointer fields. Also, we keep the mutable state in a separate

	return c&fullCasedMask == cIgnorableUncased
}

func (c info) isMid() bool {
	return c&(fullCasedMask|isMidBit) == isMidBit|cIgnorableUncased
}

// The case mapping implementation will need to know about various Canonical
// Combining Class (CCC) values. We encode two of these in the trie value:
// cccZero (0) and cccAbove (230). If the value is cccOther, it means that

	return ""
}

func (s *Struct) Underlying() Type { return s }
func (s *Struct) String() string   { return TypeString(s, nil) }

// ----------------------------------------------------------------------------
// Implementation

func (s *Struct) markComplete() {
	if s.fields == nil {
		s.fields = make([]*Var, 0)
	}
}

func (check *Checker) structType(styp *Struct, e *syntax.StructType) {
	if e.FieldList == nil {

	if strings.HasPrefix(p, prefix) {
		return true
	}
	return strings.HasPrefix(strings.ToLower(p), strings.ToLower(prefix))
}

func splitList(path string) []string {
	// The same implementation is used in LookPath in os/exec;
	// consider changing os/exec when changing this.

	if path == "" {
		return []string{}
	}

	// Split path, respecting but preserving quotes.
	list := []string{}
	start := 0

	s += uint(sys.OnesCount64(b[j/64] & ((1 << (j%64 + 1)) - 1)))
	return
}

// pallocBits is a bitmap that tracks page allocations for at most one
// palloc chunk.
//
// The precise representation is an implementation detail, but for the
// sake of documentation, 0s are free pages and 1s are allocated pages.
type pallocBits pageBits

// summarize returns a packed summary of the bitmap in pallocBits.

concrete value that it holds, and printing continues with the next rule.

2. If an operand implements the [Formatter] interface, it will
be invoked. In this case the interpretation of verbs and flags is
controlled by that implementation.

3. If the %v verb is used with the # flag (%#v) and the operand
implements the [GoStringer] interface, that will be invoked.

If the format (which is implicitly %v for [Println] etc.) is valid

package driver

import (
	"fmt"
	"reflect"
	"strconv"
	"time"
)

// ValueConverter is the interface providing the ConvertValue method.
//
// Various implementations of ValueConverter are provided by the
// driver package to provide consistent implementations of conversions
// between drivers. The ValueConverters have several uses:
//
//   - converting from the [Value] types as provided by the sql package