cmd/go: create temporary cleanup script

This is a large series of sed commands to cleanup after successful use
of the `rf inject` command.  This script will be used to refactor the
codebase to eliminate global state within the module loader.  Once
that effort is complete, this script will be removed.

This commit is part of the overall effort to eliminate global
modloader state.

Change-Id: If04926b5ca5b7230f91ac98fe4a82c20ef5f73ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/709978
Reviewed-by: Michael Matloob <matloob@golang.org>
TryBot-Bypass: Ian Alexander <jitsu@google.com>
Commit-Queue: Ian Alexander <jitsu@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>

Author: jitsu-net

src/cmd/go/internal/rf-cleanup.zsh

@@ -0,0 +1,43 @@
+#!/usr/bin/env zsh
+
+set -eu -o pipefail
+
+# This is a large series of sed commands to cleanup after successful use of the
+# `rf inject` command.  This script will be used to refactor the codebase to
+# eliminate global state within the module loader.  Once that effort is
+# complete, this script will be removed.
+
+find . -name '*.go' -exec \
+  sed -i '
+    #
+    # CompileAction does not use loaderstate.
+    #
+    s/CompileAction(loaderstate[^ ]* \*modload.State, /CompileAction(/g
+    s/CompileAction(modload.LoaderState[^,]*, /CompileAction(/g
+    s/CompileAction(loaderstate[^,]*, /CompileAction(/g
+    #
+    # cgoAction does not use loaderstate.
+    #
+    s/cgoAction(loaderstate \*modload\.State, /cgoAction(/g
+    s/cgoAction(loaderstate, /cgoAction(/g
+    s/cgoAction(loaderstate_, /cgoAction(/g
+    #
+    # Remove redundant mentions of LoaderState from function call sites.
+    #
+    s/(modload\.LoaderState_*, loaderstate,/(loaderstate,/g
+    s/(modload\.LoaderState_*, moduleLoaderState,/(moduleLoaderState,/g
+    s/(modload\.LoaderState_*, modload\.LoaderState/(modload.LoaderState/g
+    s/(modload\.LoaderState_*, loaderstate,/(loaderstate,/g
+    s/(modload\.LoaderState_*, moduleLoaderState,/(moduleLoaderState,/g
+    s/(modload\.LoaderState_*, modload\.LoaderState,/(modload.LoaderState,/g
+    s/(loaderstate_* \*modload.State, loaderstate \*modload.State/(loaderstate *modload.State/g
+    s/(loaderstate_* \*State, loaderstate \*State/(loaderstate *State/g
+    s/(loaderstate_*, loaderstate,/(loaderstate,/g
+    s/(LoaderState_*, loaderstate,/(loaderstate,/g
+    s/(LoaderState_*, loaderState,/(loaderState,/g
+    s/(LoaderState_*, LoaderState,/(LoaderState,/g
+    s/(LoaderState_*, LoaderState,/(LoaderState,/g
+    s/(moduleLoaderState_*, loaderstate,/(loaderstate,/g
+    s/(moduleLoaderState_*, moduleLoaderState,/(moduleLoaderState,/g
+  ' {} \;
+