1 files changed, 0 insertions, 237 deletions
diff --git a/src/pkg/encoding/gob/decoder.go b/src/pkg/encoding/gob/decoder.go
deleted file mode 100644
index 3a769ec12..000000000
--- a/src/pkg/encoding/gob/decoder.go
+++ /dev/null
@@ -1,237 +0,0 @@
-// Copyright 2009 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 gob
-
-import (
-	"bufio"
-	"bytes"
-	"errors"
-	"io"
-	"reflect"
-	"sync"
-)
-
-// A Decoder manages the receipt of type and data information read from the
-// remote side of a connection.
-type Decoder struct {
-	mutex        sync.Mutex                              // each item must be received atomically
-	r            io.Reader                               // source of the data
-	buf          bytes.Buffer                            // buffer for more efficient i/o from r
-	wireType     map[typeId]*wireType                    // map from remote ID to local description
-	decoderCache map[reflect.Type]map[typeId]**decEngine // cache of compiled engines
-	ignorerCache map[typeId]**decEngine                  // ditto for ignored objects
-	freeList     *decoderState                           // list of free decoderStates; avoids reallocation
-	countBuf     []byte                                  // used for decoding integers while parsing messages
-	tmp          []byte                                  // temporary storage for i/o; saves reallocating
-	err          error
-}
-
-// NewDecoder returns a new decoder that reads from the io.Reader.
-// If r does not also implement io.ByteReader, it will be wrapped in a
-// bufio.Reader.
-func NewDecoder(r io.Reader) *Decoder {
-	dec := new(Decoder)
-	// We use the ability to read bytes as a plausible surrogate for buffering.
-	if _, ok := r.(io.ByteReader); !ok {
-		r = bufio.NewReader(r)
-	}
-	dec.r = r
-	dec.wireType = make(map[typeId]*wireType)
-	dec.decoderCache = make(map[reflect.Type]map[typeId]**decEngine)
-	dec.ignorerCache = make(map[typeId]**decEngine)
-	dec.countBuf = make([]byte, 9) // counts may be uint64s (unlikely!), require 9 bytes
-
-	return dec
-}
-
-// recvType loads the definition of a type.
-func (dec *Decoder) recvType(id typeId) {
-	// Have we already seen this type?  That's an error
-	if id < firstUserId || dec.wireType[id] != nil {
-		dec.err = errors.New("gob: duplicate type received")
-		return
-	}
-
-	// Type:
-	wire := new(wireType)
-	dec.decodeValue(tWireType, reflect.ValueOf(wire))
-	if dec.err != nil {
-		return
-	}
-	// Remember we've seen this type.
-	dec.wireType[id] = wire
-}
-
-var errBadCount = errors.New("invalid message length")
-
-// recvMessage reads the next count-delimited item from the input. It is the converse
-// of Encoder.writeMessage. It returns false on EOF or other error reading the message.
-func (dec *Decoder) recvMessage() bool {
-	// Read a count.
-	nbytes, _, err := decodeUintReader(dec.r, dec.countBuf)
-	if err != nil {
-		dec.err = err
-		return false
-	}
-	// Upper limit of 1GB, allowing room to grow a little without overflow.
-	// TODO: We might want more control over this limit.
-	if nbytes >= 1<<30 {
-		dec.err = errBadCount
-		return false
-	}
-	dec.readMessage(int(nbytes))
-	return dec.err == nil
-}
-
-// readMessage reads the next nbytes bytes from the input.
-func (dec *Decoder) readMessage(nbytes int) {
-	// Allocate the dec.tmp buffer, up to 10KB.
-	const maxBuf = 10 * 1024
-	nTmp := nbytes
-	if nTmp > maxBuf {
-		nTmp = maxBuf
-	}
-	if cap(dec.tmp) < nTmp {
-		nAlloc := nTmp + 100 // A little extra for growth.
-		if nAlloc > maxBuf {
-			nAlloc = maxBuf
-		}
-		dec.tmp = make([]byte, nAlloc)
-	}
-	dec.tmp = dec.tmp[:nTmp]
-
-	// Read the data
-	dec.buf.Grow(nbytes)
-	for nbytes > 0 {
-		if nbytes < nTmp {
-			dec.tmp = dec.tmp[:nbytes]
-		}
-		var nRead int
-		nRead, dec.err = io.ReadFull(dec.r, dec.tmp)
-		if dec.err != nil {
-			if dec.err == io.EOF {
-				dec.err = io.ErrUnexpectedEOF
-			}
-			return
-		}
-		dec.buf.Write(dec.tmp)
-		nbytes -= nRead
-	}
-}
-
-// toInt turns an encoded uint64 into an int, according to the marshaling rules.
-func toInt(x uint64) int64 {
-	i := int64(x >> 1)
-	if x&1 != 0 {
-		i = ^i
-	}
-	return i
-}
-
-func (dec *Decoder) nextInt() int64 {
-	n, _, err := decodeUintReader(&dec.buf, dec.countBuf)
-	if err != nil {
-		dec.err = err
-	}
-	return toInt(n)
-}
-
-func (dec *Decoder) nextUint() uint64 {
-	n, _, err := decodeUintReader(&dec.buf, dec.countBuf)
-	if err != nil {
-		dec.err = err
-	}
-	return n
-}
-
-// decodeTypeSequence parses:
-// TypeSequence
-//	(TypeDefinition DelimitedTypeDefinition*)?
-// and returns the type id of the next value.  It returns -1 at
-// EOF.  Upon return, the remainder of dec.buf is the value to be
-// decoded.  If this is an interface value, it can be ignored by
-// resetting that buffer.
-func (dec *Decoder) decodeTypeSequence(isInterface bool) typeId {
-	for dec.err == nil {
-		if dec.buf.Len() == 0 {
-			if !dec.recvMessage() {
-				break
-			}
-		}
-		// Receive a type id.
-		id := typeId(dec.nextInt())
-		if id >= 0 {
-			// Value follows.
-			return id
-		}
-		// Type definition for (-id) follows.
-		dec.recvType(-id)
-		// When decoding an interface, after a type there may be a
-		// DelimitedValue still in the buffer.  Skip its count.
-		// (Alternatively, the buffer is empty and the byte count
-		// will be absorbed by recvMessage.)
-		if dec.buf.Len() > 0 {
-			if !isInterface {
-				dec.err = errors.New("extra data in buffer")
-				break
-			}
-			dec.nextUint()
-		}
-	}
-	return -1
-}
-
-// Decode reads the next value from the input stream and stores
-// it in the data represented by the empty interface value.
-// If e is nil, the value will be discarded. Otherwise,
-// the value underlying e must be a pointer to the
-// correct type for the next data item received.
-// If the input is at EOF, Decode returns io.EOF and
-// does not modify e.
-func (dec *Decoder) Decode(e interface{}) error {
-	if e == nil {
-		return dec.DecodeValue(reflect.Value{})
-	}
-	value := reflect.ValueOf(e)
-	// If e represents a value as opposed to a pointer, the answer won't
-	// get back to the caller.  Make sure it's a pointer.
-	if value.Type().Kind() != reflect.Ptr {
-		dec.err = errors.New("gob: attempt to decode into a non-pointer")
-		return dec.err
-	}
-	return dec.DecodeValue(value)
-}
-
-// DecodeValue reads the next value from the input stream.
-// If v is the zero reflect.Value (v.Kind() == Invalid), DecodeValue discards the value.
-// Otherwise, it stores the value into v.  In that case, v must represent
-// a non-nil pointer to data or be an assignable reflect.Value (v.CanSet())
-// If the input is at EOF, DecodeValue returns io.EOF and
-// does not modify e.
-func (dec *Decoder) DecodeValue(v reflect.Value) error {
-	if v.IsValid() {
-		if v.Kind() == reflect.Ptr && !v.IsNil() {
-			// That's okay, we'll store through the pointer.
-		} else if !v.CanSet() {
-			return errors.New("gob: DecodeValue of unassignable value")
-		}
-	}
-	// Make sure we're single-threaded through here.
-	dec.mutex.Lock()
-	defer dec.mutex.Unlock()
-
-	dec.buf.Reset() // In case data lingers from previous invocation.
-	dec.err = nil
-	id := dec.decodeTypeSequence(false)
-	if dec.err == nil {
-		dec.decodeValue(id, v)
-	}
-	return dec.err
-}
-
-// If debug.go is compiled into the program , debugFunc prints a human-readable
-// representation of the gob data read from r by calling that file's Debug function.
-// Otherwise it is nil.
-var debugFunc func(io.Reader)