all: add more uses of stringer

By grepping for ]string{$, one can find many manual implementations of
stringer. The debug/dwarf ones needed the new -trimprefix flag, too.

html/template was fairly simple, just implementing the fallback as
stringer would. The changes there are trivial.

The ones in debug/dwarf needed a bit of extra logic since the GoString
wants to use its own format, depending on whether or not the value is
one of the known constants.

Change-Id: I501ea7deaa538fa425c8e9c2bb895f480169273f
Reviewed-on: https://go-review.googlesource.com/77253
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/debug/dwarf/class_string.go b/src/debug/dwarf/class_string.go
index d57d9f71c4..a6aabff524 100644
--- a/src/debug/dwarf/class_string.go
+++ b/src/debug/dwarf/class_string.go
@@ -1,16 +1,16 @@
-// generated by stringer -type=Class; DO NOT EDIT
+// Code generated by "stringer -type=Class"; DO NOT EDIT.
 
 package dwarf
 
-import "fmt"
+import "strconv"
 
 const _Class_name = "ClassUnknownClassAddressClassBlockClassConstantClassExprLocClassFlagClassLinePtrClassLocListPtrClassMacPtrClassRangeListPtrClassReferenceClassReferenceSigClassStringClassReferenceAltClassStringAlt"
 
 var _Class_index = [...]uint8{0, 12, 24, 34, 47, 59, 68, 80, 95, 106, 123, 137, 154, 165, 182, 196}
 
 func (i Class) String() string {
-	if i < 0 || i+1 >= Class(len(_Class_index)) {
-		return fmt.Sprintf("Class(%d)", i)
+	if i < 0 || i >= Class(len(_Class_index)-1) {
+		return "Class(" + strconv.FormatInt(int64(i), 10) + ")"
 	}
 	return _Class_name[_Class_index[i]:_Class_index[i+1]]
 }