qbit/go
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make the tutorial programs run again.

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(the text still needs fixing)
add the tutorial programs to the test run.

R=rsc
DELTA=41  (6 added, 0 deleted, 35 changed)
OCL=22174
CL=22174
This commit is contained in:
Rob Pike 2009-01-06 15:49:27 -08:00
parent 84953bdaa8
commit 8d21004b41
10 changed files with 40 additions and 34 deletions
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4
doc/progs/cat.go
View File

@ -13,14 +13,14 @@ func cat(fd *FD.FD) {
const NBUF = 512;
var buf [NBUF]byte;
for {
switch nr, er := fd.Read(&buf); true {
switch nr, er := fd.Read(buf); true {
case nr < 0:
print("error reading from ", fd.Name(), ": ", er, "\n");
sys.exit(1);
case nr == 0: // EOF
return;
case nr > 0:
if nw, ew := FD.Stdout.Write((&buf)[0:nr]); nw != nr {
if nw, ew := FD.Stdout.Write(buf[0:nr]); nw != nr {
print("error writing from ", fd.Name(), ": ", ew, "\n");
}
}

8
doc/progs/cat_rot13.go
View File

@ -22,7 +22,7 @@ func rot13(b byte) byte {
}
type Reader interface {
Read(b *[]byte) (ret int64, errno int64);
Read(b []byte) (ret int64, errno int64);
Name() string;
}
@ -36,7 +36,7 @@ func NewRot13(source Reader) *Rot13 {
return r13
}
func (r13 *Rot13) Read(b *[]byte) (ret int64, errno int64) {
func (r13 *Rot13) Read(b []byte) (ret int64, errno int64) { // TODO: use standard Read sig?
r, e := r13.source.Read(b);
for i := int64(0); i < r; i++ {
b[i] = rot13(b[i])
@ -57,14 +57,14 @@ func cat(r Reader) {
r = NewRot13(r)
}
for {
switch nr, er := r.Read(&buf); {
switch nr, er := r.Read(buf); {
case nr < 0:
print("error reading from ", r.Name(), ": ", er, "\n");
sys.exit(1);
case nr == 0: // EOF
return;
case nr > 0:
nw, ew := FD.Stdout.Write((&buf)[0:nr]);
nw, ew := FD.Stdout.Write(buf[0:nr]);
if nw != nr {
print("error writing from ", r.Name(), ": ", ew, "\n");
}

4
doc/progs/fd.go
View File

@ -41,7 +41,7 @@ func (fd *FD) Close() int64 {
return 0
}
func (fd *FD) Read(b *[]byte) (ret int64, errno int64) {
func (fd *FD) Read(b []byte) (ret int64, errno int64) {
if fd == nil {
return -1, Syscall.EINVAL
}
@ -49,7 +49,7 @@ func (fd *FD) Read(b *[]byte) (ret int64, errno int64) {
return r, e
}
func (fd *FD) Write(b *[]byte) (ret int64, errno int64) {
func (fd *FD) Write(b []byte) (ret int64, errno int64) {
if fd == nil {
return -1, Syscall.EINVAL
}

2
doc/progs/helloworld3.go
View File

@ -8,7 +8,7 @@ import FD "fd"
func main() {
hello := []byte{'h', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd', '\n'};
FD.Stdout.Write(&hello);
FD.Stdout.Write(hello);
fd, errno := FD.Open("/does/not/exist", 0, 0);
if fd == nil {
print("can't open file; errno=", errno, "\n");

6
doc/progs/run
View File

@ -27,7 +27,7 @@ done
function testit {
6l $1.6
x=$(echo $(6.out $2 2>&1)) # extra echo canonicalizes
x=$(echo $(./6.out $2 2>&1)) # extra echo canonicalizes
if [ "$x" != "$3" ]
then
echo $1 failed: '"'$x'"' is not '"'$3'"'
@ -36,7 +36,7 @@ function testit {
function testitpipe {
6l $1.6
x=$(echo $(6.out | $2 2>&1)) # extra echo canonicalizes
x=$(echo $(./6.out | $2 2>&1)) # extra echo canonicalizes
if [ "$x" != "$3" ]
then
echo $1 failed: '"'$x'"' is not '"'$3'"'
@ -63,3 +63,5 @@ testitpipe sieve "sed 10q" "2 3 5 7 11 13 17 19 23 29"
# server hangs; don't run it
testit server1 "" ""
rm -f 6.out *.6

6
doc/progs/server.go
View File

@ -6,7 +6,7 @@ package main
type Request struct {
a, b int;
replyc *chan int;
replyc chan int;
}
type BinOp (a, b int) int;
@ -16,14 +16,14 @@ func Run(op *BinOp, request *Request) {
request.replyc <- result;
}
func Server(op *BinOp, service *chan *Request) {
func Server(op *BinOp, service chan *Request) {
for {
request := <-service;
go Run(op, request); // don't wait for it
}
}
func StartServer(op *BinOp) *chan *Request {
func StartServer(op *BinOp) chan *Request {
req := new(chan *Request);
go Server(op, req);
return req;

12
doc/progs/server1.go
View File

@ -6,7 +6,7 @@ package main
type Request struct {
a, b int;
replyc *chan int;
replyc chan int;
}
type BinOp (a, b int) int;
@ -16,7 +16,7 @@ func Run(op *BinOp, request *Request) {
request.replyc <- result;
}
func Server(op *BinOp, service *chan *Request, quit *chan bool) {
func Server(op *BinOp, service chan *Request, quit chan bool) {
for {
select {
case request := <-service:
@ -27,9 +27,9 @@ func Server(op *BinOp, service *chan *Request, quit *chan bool) {
}
}
func StartServer(op *BinOp) (service *chan *Request, quit *chan bool) {
service = new(chan *Request);
quit = new(chan bool);
func StartServer(op *BinOp) (service chan *Request, quit chan bool) {
service = make(chan *Request);
quit = make(chan bool);
go Server(op, service, quit);
return service, quit;
}
@ -42,7 +42,7 @@ func main() {
req := &reqs[i];
req.a = i;
req.b = i + N;
req.replyc = new(chan int);
req.replyc = make(chan int);
adder <- req;
}
for i := N-1; i >= 0; i-- { // doesn't matter what order

10
doc/progs/sieve.go
View File

@ -5,7 +5,7 @@
package main
// Send the sequence 2, 3, 4, ... to channel 'ch'.
func Generate(ch *chan int) {
func Generate(ch chan int) {
for i := 2; ; i++ {
ch <- i // Send 'i' to channel 'ch'.
}
@ -13,9 +13,9 @@ func Generate(ch *chan int) {
// Copy the values from channel 'in' to channel 'out',
// removing those divisible by 'prime'.
func Filter(in, out *chan int, prime int) {
func Filter(in, out chan int, prime int) {
for {
i := <-in // Receive value of new variable 'i' from 'in'.
i := <-in; // Receive value of new variable 'i' from 'in'.
if i % prime != 0 {
out <- i // Send 'i' to channel 'out'.
}
@ -24,12 +24,12 @@ func Filter(in, out *chan int, prime int) {
// The prime sieve: Daisy-chain Filter processes together.
func main() {
ch := new(chan int); // Create a new channel.
ch := make(chan int); // Create a new channel.
go Generate(ch); // Start Generate() as a goroutine.
for {
prime := <-ch;
print(prime, "\n");
ch1 := new(chan int);
ch1 := make(chan int);
go Filter(ch, ch1, prime);
ch = ch1
}

18
doc/progs/sieve1.go
View File

@ -5,9 +5,9 @@
package main
// Send the sequence 2, 3, 4, ... to returned channel
func Generate() *chan int {
ch := new(chan int);
go func(ch *chan int){
func Generate() chan int {
ch := make(chan int);
go func(ch chan int){
for i := 2; ; i++ {
ch <- i
}
@ -16,9 +16,9 @@ func Generate() *chan int {
}
// Filter out input values divisible by 'prime', send rest to returned channel
func Filter(in *chan int, prime int) *chan int {
out := new(chan int);
go func(in *chan int, out *chan int, prime int) {
func Filter(in chan int, prime int) chan int {
out := make(chan int);
go func(in chan int, out chan int, prime int) {
for {
if i := <-in; i % prime != 0 {
out <- i
@ -28,9 +28,9 @@ func Filter(in *chan int, prime int) *chan int {
return out;
}
func Sieve() *chan int {
out := new(chan int);
go func(out *chan int) {
func Sieve() chan int {
out := make(chan int);
go func(out chan int) {
ch := Generate();
for {
prime := <-ch;

4
src/run.bash
View File

@ -58,6 +58,10 @@ make smoketest
# # make test
# ) || exit $?
(xcd ../doc/progs
time run
) || exit $?
(xcd ../test
./run
) || exit $?