Initial QSfera import

Server/vendor/github.com/open-policy-agent/opa/v1/ast/strings.go

@@ -0,0 +1,56 @@
+// Copyright 2016 The OPA Authors.  All rights reserved.
+// Use of this source code is governed by an Apache2
+// license that can be found in the LICENSE file.
+
+package ast
+
+import (
+	"reflect"
+	"strings"
+)
+
+// TypeName returns a human readable name for the AST element type.
+func TypeName(x any) string {
+	if _, ok := x.(*lazyObj); ok {
+		return "object"
+	}
+	return strings.ToLower(reflect.Indirect(reflect.ValueOf(x)).Type().Name())
+}
+
+// ValueName returns a human readable name for the AST Value type.
+// This is preferrable over calling TypeName when the argument is known to be
+// a Value, as this doesn't require reflection (= heap allocations).
+func ValueName(x Value) string {
+	switch x.(type) {
+	case String:
+		return "string"
+	case Boolean:
+		return "boolean"
+	case Number:
+		return "number"
+	case Null:
+		return "null"
+	case Var:
+		return "var"
+	case Object:
+		return "object"
+	case Set:
+		return "set"
+	case Ref:
+		return "ref"
+	case Call:
+		return "call"
+	case *Array:
+		return "array"
+	case *ArrayComprehension:
+		return "arraycomprehension"
+	case *ObjectComprehension:
+		return "objectcomprehension"
+	case *SetComprehension:
+		return "setcomprehension"
+	case *TemplateString:
+		return "templatestring"
+	}
+
+	return TypeName(x)
+}