]> Cypherpunks repositories - gostls13.git/commitdiff
test/chan/select5.go: change "with" to "if" in templatea
authorRob Pike <r@golang.org>
Thu, 18 Aug 2011 03:27:18 +0000 (13:27 +1000)
committerRob Pike <r@golang.org>
Thu, 18 Aug 2011 03:27:18 +0000 (13:27 +1000)
I converted this program yesterday and the output is the
same as it used to be, ignoring space, but the result is
not the best expression of the algorithm.  The old {.section
Maybe} pieces are now {{with .Maybe}}, as a direct translation,
but I they should be {{if .Maybe}} as the output is just a
bool and there is no cascading.

I have verified that the output of the program is unaffected.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/4889053

test/chan/select5.go

index 6f63e5accb27473ee3095ac19b731da72f23ee84..60718216712ee41d77d271748612c11970e614ad 100644 (file)
@@ -146,26 +146,26 @@ func parse(name, s string) *template.Template {
 var recv = parse("recv", `
        {{/*  Send n, receive it one way or another into x, check that they match. */}}
        c <- n
-       {{with .Maybe}}
+       {{if .Maybe}}
        x = <-c
        {{else}}
        select {
        {{/*  Blocking or non-blocking, before the receive. */}}
        {{/*  The compiler implements two-case select where one is default with custom code, */}}
        {{/*  so test the default branch both before and after the send. */}}
-       {{with .MaybeDefault}}
+       {{if .MaybeDefault}}
        default:
                panic("nonblock")
        {{end}}
        {{/*  Receive from c.  Different cases are direct, indirect, :=, interface, and map assignment. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case x = <-c:
-       {{else}}{{with .Maybe}}
+       {{else}}{{if .Maybe}}
        case *f(&x) = <-c:
-       {{else}}{{with .Maybe}}
+       {{else}}{{if .Maybe}}
        case y := <-c:
                x = y
-       {{else}}{{with .Maybe}}
+       {{else}}{{if .Maybe}}
        case i = <-c:
                x = i.(int)
        {{else}}
@@ -173,25 +173,25 @@ var recv = parse("recv", `
                x = m[13]
        {{end}}{{end}}{{end}}{{end}}
        {{/*  Blocking or non-blocking again, after the receive. */}}
-       {{with .MaybeDefault}}
+       {{if .MaybeDefault}}
        default:
                panic("nonblock")
        {{end}}
        {{/*  Dummy send, receive to keep compiler from optimizing select. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case dummy <- 1:
                panic("dummy send")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-dummy:
                panic("dummy receive")
        {{end}}
        {{/*  Nil channel send, receive to keep compiler from optimizing select. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case nilch <- 1:
                panic("nilch send")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-nilch:
                panic("nilch recv")
        {{end}}
@@ -209,12 +209,12 @@ var recvOrder = parse("recvOrder", `
        {{/*  that the argument sequence is strictly increasing. */}}
        order = 0
        c <- n
-       {{with .Maybe}}
+       {{if .Maybe}}
        {{/*  Outside of select, left-to-right rule applies. */}}
        {{/*  (Inside select, assignment waits until case is chosen, */}}
        {{/*  so right hand side happens before anything on left hand side. */}}
        *fp(&x, 1) = <-fc(c, 2)
-       {{else}}{{with .Maybe}}
+       {{else}}{{if .Maybe}}
        m[fn(13, 1)] = <-fc(c, 2)
        x = m[13]
        {{else}}
@@ -222,17 +222,17 @@ var recvOrder = parse("recvOrder", `
        {{/*  Blocking or non-blocking, before the receive. */}}
        {{/*  The compiler implements two-case select where one is default with custom code, */}}
        {{/*  so test the default branch both before and after the send. */}}
-       {{with .MaybeDefault}}
+       {{if .MaybeDefault}}
        default:
                panic("nonblock")
        {{end}}
        {{/*  Receive from c.  Different cases are direct, indirect, :=, interface, and map assignment. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case *fp(&x, 100) = <-fc(c, 1):
-       {{else}}{{with .Maybe}}
+       {{else}}{{if .Maybe}}
        case y := <-fc(c, 1):
                x = y
-       {{else}}{{with .Maybe}}
+       {{else}}{{if .Maybe}}
        case i = <-fc(c, 1):
                x = i.(int)
        {{else}}
@@ -240,25 +240,25 @@ var recvOrder = parse("recvOrder", `
                x = m[13]
        {{end}}{{end}}{{end}}
        {{/*  Blocking or non-blocking again, after the receive. */}}
-       {{with .MaybeDefault}}
+       {{if .MaybeDefault}}
        default:
                panic("nonblock")
        {{end}}
        {{/*  Dummy send, receive to keep compiler from optimizing select. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case fc(dummy, 2) <- fn(1, 3):
                panic("dummy send")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-fc(dummy, 4):
                panic("dummy receive")
        {{end}}
        {{/*  Nil channel send, receive to keep compiler from optimizing select. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case fc(nilch, 5) <- fn(1, 6):
                panic("nilch send")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-fc(nilch, 7):
                panic("nilch recv")
        {{end}}
@@ -272,12 +272,12 @@ var recvOrder = parse("recvOrder", `
 
 var send = parse("send", `
        {{/*  Send n one way or another, receive it into x, check that they match. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        c <- n
        {{else}}
        select {
        {{/*  Blocking or non-blocking, before the receive (same reason as in recv). */}}
-       {{with .MaybeDefault}}
+       {{if .MaybeDefault}}
        default:
                panic("nonblock")
        {{end}}
@@ -285,25 +285,25 @@ var send = parse("send", `
        {{/*  from the send operation. */}}
        case c <- n:
        {{/*  Blocking or non-blocking. */}}
-       {{with .MaybeDefault}}
+       {{if .MaybeDefault}}
        default:
                panic("nonblock")
        {{end}}
        {{/*  Dummy send, receive to keep compiler from optimizing select. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case dummy <- 1:
                panic("dummy send")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-dummy:
                panic("dummy receive")
        {{end}}
        {{/*  Nil channel send, receive to keep compiler from optimizing select. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case nilch <- 1:
                panic("nilch send")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-nilch:
                panic("nilch recv")
        {{end}}
@@ -321,12 +321,12 @@ var sendOrder = parse("sendOrder", `
        {{/*  Check order of operations along the way by calling functions that check */}}
        {{/*  that the argument sequence is strictly increasing. */}}
        order = 0
-       {{with .Maybe}}
+       {{if .Maybe}}
        fc(c, 1) <- fn(n, 2)
        {{else}}
        select {
        {{/*  Blocking or non-blocking, before the receive (same reason as in recv). */}}
-       {{with .MaybeDefault}}
+       {{if .MaybeDefault}}
        default:
                panic("nonblock")
        {{end}}
@@ -334,25 +334,25 @@ var sendOrder = parse("sendOrder", `
        {{/*  from the send operation. */}}
        case fc(c, 1) <- fn(n, 2):
        {{/*  Blocking or non-blocking. */}}
-       {{with .MaybeDefault}}
+       {{if .MaybeDefault}}
        default:
                panic("nonblock")
        {{end}}
        {{/*  Dummy send, receive to keep compiler from optimizing select. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case fc(dummy, 3) <- fn(1, 4):
                panic("dummy send")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-fc(dummy, 5):
                panic("dummy receive")
        {{end}}
        {{/*  Nil channel send, receive to keep compiler from optimizing select. */}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case fc(nilch, 6) <- fn(1, 7):
                panic("nilch send")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-fc(nilch, 8):
                panic("nilch recv")
        {{end}}
@@ -370,42 +370,42 @@ var nonblock = parse("nonblock", `
        {{/*  Test various combinations of non-blocking operations. */}}
        {{/*  Receive assignments must not edit or even attempt to compute the address of the lhs. */}}
        select {
-       {{with .MaybeDefault}}
+       {{if .MaybeDefault}}
        default:
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case dummy <- 1:
                panic("dummy <- 1")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case nilch <- 1:
                panic("nilch <- 1")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-dummy:
                panic("<-dummy")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case x = <-dummy:
                panic("<-dummy x")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case **(**int)(nil) = <-dummy:
                panic("<-dummy (and didn't crash saving result!)")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case <-nilch:
                panic("<-nilch")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case x = <-nilch:
                panic("<-nilch x")
        {{end}}
-       {{with .Maybe}}
+       {{if .Maybe}}
        case **(**int)(nil) = <-nilch:
                panic("<-nilch (and didn't crash saving result!)")
        {{end}}
-       {{with .MustDefault}}
+       {{if .MustDefault}}
        default:
        {{end}}
        }