package xgb

/*
	This file was generated by bigreq.xml on May 6 2012 5:48:46pm EDT.
	This file is automatically generated. Edit at your peril!
*/

// BigreqInit must be called before using the BIG-REQUESTS extension.
func (c *Conn) BigreqInit() error {
	reply, err := c.QueryExtension(12, "BIG-REQUESTS").Reply()
	switch {
	case err != nil:
		return err
	case !reply.Present:
		return newError("No extension named BIG-REQUESTS could be found on on the server.")
	}

	c.extLock.Lock()
	c.extensions["BIG-REQUESTS"] = reply.MajorOpcode
	for evNum, fun := range newExtEventFuncs["BIG-REQUESTS"] {
		newEventFuncs[int(reply.FirstEvent)+evNum] = fun
	}
	c.extLock.Unlock()

	return nil
}

func init() {
	newExtEventFuncs["BIG-REQUESTS"] = make(map[int]newEventFun)
}

// Skipping definition for base type 'Float'

// Skipping definition for base type 'Id'

// Skipping definition for base type 'Card8'

// Skipping definition for base type 'Int16'

// Skipping definition for base type 'Int32'

// Skipping definition for base type 'Void'

// Skipping definition for base type 'Byte'

// Skipping definition for base type 'Int8'

// Skipping definition for base type 'Card16'

// Skipping definition for base type 'Char'

// Skipping definition for base type 'Card32'

// Skipping definition for base type 'Double'

// Skipping definition for base type 'Bool'

// Request BigreqEnable
// size: 4
type BigreqEnableCookie struct {
	*cookie
}

func (c *Conn) BigreqEnable() BigreqEnableCookie {
	cookie := c.newCookie(true, true)
	c.newRequest(c.bigreqEnableRequest(), cookie)
	return BigreqEnableCookie{cookie}
}

func (c *Conn) BigreqEnableUnchecked() BigreqEnableCookie {
	cookie := c.newCookie(false, true)
	c.newRequest(c.bigreqEnableRequest(), cookie)
	return BigreqEnableCookie{cookie}
}

// Request reply for BigreqEnable
// size: 12
type BigreqEnableReply struct {
	Sequence uint16
	Length   uint32
	// padding: 1 bytes
	MaximumRequestLength uint32
}

// Waits and reads reply data from request BigreqEnable
func (cook BigreqEnableCookie) Reply() (*BigreqEnableReply, error) {
	buf, err := cook.reply()
	if err != nil {
		return nil, err
	}
	if buf == nil {
		return nil, nil
	}
	return bigreqEnableReply(buf), nil
}

// Read reply into structure from buffer for BigreqEnable
func bigreqEnableReply(buf []byte) *BigreqEnableReply {
	v := new(BigreqEnableReply)
	b := 1 // skip reply determinant

	b += 1 // padding

	v.Sequence = Get16(buf[b:])
	b += 2

	v.Length = Get32(buf[b:]) // 4-byte units
	b += 4

	v.MaximumRequestLength = Get32(buf[b:])
	b += 4

	return v
}

func (cook BigreqEnableCookie) Check() error {
	return cook.check()
}

// Write request to wire for BigreqEnable
func (c *Conn) bigreqEnableRequest() []byte {
	size := 4
	b := 0
	buf := make([]byte, size)

	buf[b] = c.extensions["BIG-REQUESTS"]
	b += 1

	buf[b] = 0 // request opcode
	b += 1

	Put16(buf[b:], uint16(size/4)) // write request size in 4-byte units
	b += 2

	return buf
}