In the generated code, we want to pull in as few dependencies as
possible. fmt is heavier than strconv, and the latter can be used with a
bit of extra code for the same results.
More importantly, this will allow stringer to be used in some std
packages that cannot import fmt, such as regexp/syntax. While strconv
lies in L2 in deps_test.go, fmt lies in L4.
This means that many other packages will also be able to use stringer
where it could be useful, such as path/filepath, os/exec, or io/ioutil.
Since some of these types may be 64-bit integers, use FormatInt instead
of Itoa to avoid overflows with int on 32-bit.
Also double-checked that the generated code is still formatted properly.
Change-Id: Iffb3bd2df5c94407705689719240aca0c7474a89
Reviewed-on: https://go-review.googlesource.com/77473
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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