Remove exp/exception as it's no longer relevant

R=gri, adg
CC=golang-dev, r, rsc
http://codereview.appspot.com/857048

Committer: Andrew Gerrand <adg@golang.org>

1 files changed, 0 insertions, 83 deletions

diff --git a/src/pkg/exp/exception/exception.go b/src/pkg/exp/exception/exception.go
deleted file mode 100644
index e34d0f0d7..000000000
--- a/src/pkg/exp/exception/exception.go
+++ /dev/null
@@ -1,83 +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.
-
-// This package illustrates how basic try-catch exception handling
-// can be emulated using goroutines, channels, and closures.
-//
-// This package is *not* intended as a general exception handler
-// library.
-//
-package exception
-
-import (
-	"fmt"
-	"runtime"
-)
-
-// A Handler function handles an arbitrary exception value x.
-type Handler func(x interface{})
-
-// An Exception carries an exception value.
-type Exception struct {
-	Value interface{} // Value may be the nil exception
-}
-
-// Try invokes a function f with a Handler to throw exceptions.
-// The function f may terminate abnormally with an arbitrary
-// exception x by calling throw(x) within f. If an exception is
-// thrown, Try returns an *Exception; otherwise it returns nil.
-//
-// Usage pattern:
-//
-//	if x := exception.Try(func(throw exception.Handler) {
-//		...
-//		throw(42);  // terminate f by throwing exception 42
-//		...
-//	}); x != nil {
-//		// catch exception, e.g. print it
-//		fmt.Println(x.Value);
-//	}
-//
-// Alternative:
-//
-//	exception.Try(func(throw exception.Handler) {
-//		...
-//		throw(42);  // terminate f by throwing exception 42
-//		...
-//	}).Catch(func (x interface{}) {
-//		// catch exception, e.g. print it
-//		fmt.Println(x);
-//	})
-//
-func Try(f func(throw Handler)) *Exception {
-	h := make(chan *Exception)
-
-	// execute try block
-	go func() {
-		f(func(x interface{}) {
-			h <- &Exception{x}
-			runtime.Goexit()
-		})
-		h <- nil // clean termination
-	}()
-
-	return <-h
-}
-
-
-// If x != nil, Catch invokes f with the exception value x.Value.
-// See Try for usage patterns.
-func (x *Exception) Catch(f Handler) {
-	if x != nil {
-		f(x.Value)
-	}
-}
-
-
-func (x *Exception) String() string {
-	if x != nil {
-		return fmt.Sprintf("exception: %v", x.Value)
-	}
-	return ""
-}