Make bp2build-generated selects() based on product config build settings

...instead of based on constraint settings.

Bug: 269577299
Test: m nothing and ./build/bazel/ci/bp2build.sh
Change-Id: Ib9caec79c92b8fd304e46be841de5612bd1637e3

starlark_fmt/format.go

@@ -16,6 +16,7 @@ package starlark_fmt
 
 import (
 	"fmt"
+	"reflect"
 	"sort"
 	"strconv"
 	"strings"
@@ -33,6 +34,72 @@ func Indention(level int) string {
 	return strings.Repeat(" ", level*indent)
 }
 
+func PrintAny(value any, indentLevel int) string {
+	return printAnyRecursive(reflect.ValueOf(value), indentLevel)
+}
+
+func printAnyRecursive(value reflect.Value, indentLevel int) string {
+	switch value.Type().Kind() {
+	case reflect.String:
+		val := value.String()
+		if strings.Contains(val, "\"") || strings.Contains(val, "\n") {
+			return `'''` + val + `'''`
+		}
+		return `"` + val + `"`
+	case reflect.Bool:
+		if value.Bool() {
+			return "True"
+		} else {
+			return "False"
+		}
+	case reflect.Int:
+		return fmt.Sprintf("%d", value.Int())
+	case reflect.Slice:
+		if value.Len() == 0 {
+			return "[]"
+		} else if value.Len() == 1 {
+			return "[" + printAnyRecursive(value.Index(0), indentLevel) + "]"
+		}
+		list := make([]string, 0, value.Len()+2)
+		list = append(list, "[")
+		innerIndent := Indention(indentLevel + 1)
+		for i := 0; i < value.Len(); i++ {
+			list = append(list, innerIndent+printAnyRecursive(value.Index(i), indentLevel+1)+`,`)
+		}
+		list = append(list, Indention(indentLevel)+"]")
+		return strings.Join(list, "\n")
+	case reflect.Map:
+		if value.Len() == 0 {
+			return "{}"
+		}
+		items := make([]string, 0, value.Len())
+		for _, key := range value.MapKeys() {
+			items = append(items, fmt.Sprintf(`%s%s: %s,`, Indention(indentLevel+1), printAnyRecursive(key, indentLevel+1), printAnyRecursive(value.MapIndex(key), indentLevel+1)))
+		}
+		sort.Strings(items)
+		return fmt.Sprintf(`{
+%s
+%s}`, strings.Join(items, "\n"), Indention(indentLevel))
+	case reflect.Struct:
+		if value.NumField() == 0 {
+			return "struct()"
+		}
+		items := make([]string, 0, value.NumField()+2)
+		items = append(items, "struct(")
+		for i := 0; i < value.NumField(); i++ {
+			if value.Type().Field(i).Anonymous {
+				panic("anonymous fields aren't supported")
+			}
+			name := value.Type().Field(i).Name
+			items = append(items, fmt.Sprintf(`%s%s = %s,`, Indention(indentLevel+1), name, printAnyRecursive(value.Field(i), indentLevel+1)))
+		}
+		items = append(items, Indention(indentLevel)+")")
+		return strings.Join(items, "\n")
+	default:
+		panic("Unhandled kind: " + value.Kind().String())
+	}
+}
+
 // PrintBool returns a Starlark compatible bool string.
 func PrintBool(item bool) string {
 	if item {