common: merge all *ToPtr methods to one generic ToPtr

After introducing Go 1.18 to a project, it's required by law to convert at
least one method to a generic one.

Everyone hates IntToPtr, StringToPtr, BoolToPtr and Uint64ToPtr, so let's
convert them to the ultimate generic ToPtr one.

Signed-off-by: Ondřej Budai <ondrej@budai.cz>

internal/common/pointers.go

@@ -1,17 +1,5 @@
 package common
 
-func IntToPtr(x int) *int {
-	return &x
-}
-
-func Uint64ToPtr(x uint64) *uint64 {
-	return &x
-}
-
-func BoolToPtr(x bool) *bool {
-	return &x
-}
-
-func StringToPtr(x string) *string {
+func ToPtr[T any](x T) *T {
 	return &x
 }

internal/common/pointers_test.go

@@ -6,26 +6,21 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestIntToPtr(t *testing.T) {
-	var value int = 42
-	got := IntToPtr(value)
-	assert.Equal(t, value, *got)
-}
+func TestToPtr(t *testing.T) {
+	var valueInt int = 42
+	gotInt := ToPtr(valueInt)
+	assert.Equal(t, valueInt, *gotInt)
 
-func TestBoolToPtr(t *testing.T) {
-	var value bool = true
-	got := BoolToPtr(value)
-	assert.Equal(t, value, *got)
-}
+	var valueBool bool = true
+	gotBool := ToPtr(valueBool)
+	assert.Equal(t, valueBool, *gotBool)
 
-func TestUint64ToPtr(t *testing.T) {
-	var value uint64 = 1
-	got := Uint64ToPtr(value)
-	assert.Equal(t, value, *got)
-}
+	var valueUint64 uint64 = 1
+	gotUint64 := ToPtr(valueUint64)
+	assert.Equal(t, valueUint64, *gotUint64)
+
+	var valueStr string = "the-greatest-test-value"
+	gotStr := ToPtr(valueStr)
+	assert.Equal(t, valueStr, *gotStr)
 
-func TestStringToPtr(t *testing.T) {
-	var value string = "the-greatest-test-value"
-	got := StringToPtr(value)
-	assert.Equal(t, value, *got)
 }