Upgrade dependent version: github.com/open-policy-agent/opa (#5315)

Upgrade dependent version: github.com/open-policy-agent/opa v0.18.0 -> v0.45.0

Signed-off-by: hongzhouzi <hongzhouzi@kubesphere.io>

Signed-off-by: hongzhouzi <hongzhouzi@kubesphere.io>

vendor/github.com/open-policy-agent/opa/internal/gojsonschema/utils.go

@@ -0,0 +1,165 @@
+// Copyright 2015 xeipuuv ( https://github.com/xeipuuv )
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// author           xeipuuv
+// author-github    https://github.com/xeipuuv
+// author-mail      xeipuuv@gmail.com
+//
+// repository-name  gojsonschema
+// repository-desc  An implementation of JSON Schema, based on IETF's draft v4 - Go language.
+//
+// description      Various utility functions.
+//
+// created          26-02-2013
+
+// nolint: deadcode,unused,varcheck // Package in development (2021).
+package gojsonschema
+
+import (
+	"encoding/json"
+	"math/big"
+)
+
+func isStringInSlice(s []string, what string) bool {
+	for i := range s {
+		if s[i] == what {
+			return true
+		}
+	}
+	return false
+}
+
+func marshalToJSONString(value interface{}) (*string, error) {
+
+	mBytes, err := json.Marshal(value)
+	if err != nil {
+		return nil, err
+	}
+
+	sBytes := string(mBytes)
+	return &sBytes, nil
+}
+
+func marshalWithoutNumber(value interface{}) (*string, error) {
+
+	// The JSON is decoded using https://golang.org/pkg/encoding/json/#Decoder.UseNumber
+	// This means the numbers are internally still represented as strings and therefore 1.00 is unequal to 1
+	// One way to eliminate these differences is to decode and encode the JSON one more time without Decoder.UseNumber
+	// so that these differences in representation are removed
+
+	jsonString, err := marshalToJSONString(value)
+	if err != nil {
+		return nil, err
+	}
+
+	var document interface{}
+
+	err = json.Unmarshal([]byte(*jsonString), &document)
+	if err != nil {
+		return nil, err
+	}
+
+	return marshalToJSONString(document)
+}
+
+func isJSONNumber(what interface{}) bool {
+
+	switch what.(type) {
+
+	case json.Number:
+		return true
+	}
+
+	return false
+}
+
+func checkJSONInteger(what interface{}) (isInt bool) {
+
+	jsonNumber := what.(json.Number)
+
+	bigFloat, isValidNumber := new(big.Rat).SetString(string(jsonNumber))
+
+	return isValidNumber && bigFloat.IsInt()
+
+}
+
+// same as ECMA Number.MAX_SAFE_INTEGER and Number.MIN_SAFE_INTEGER
+const (
+	maxJSONFloat = float64(1<<53 - 1)  // 9007199254740991.0 	 2^53 - 1
+	minJSONFloat = -float64(1<<53 - 1) //-9007199254740991.0	-2^53 - 1
+)
+
+func mustBeInteger(what interface{}) *int {
+	number, ok := what.(json.Number)
+	if !ok {
+		return nil
+	}
+
+	isInt := checkJSONInteger(number)
+	if !isInt {
+		return nil
+	}
+
+	int64Value, err := number.Int64()
+	if err != nil {
+		return nil
+	}
+
+	// This doesn't actually convert to an int32 value; it converts to the
+	// system-specific default integer. Assuming this is a valid int32 could cause
+	// bugs.
+	int32Value := int(int64Value)
+	return &int32Value
+}
+
+func mustBeNumber(what interface{}) *big.Rat {
+	number, ok := what.(json.Number)
+	if !ok {
+		return nil
+	}
+
+	float64Value, success := new(big.Rat).SetString(string(number))
+	if success {
+		return float64Value
+	}
+	return nil
+}
+
+func convertDocumentNode(val interface{}) interface{} {
+
+	if lval, ok := val.([]interface{}); ok {
+
+		res := []interface{}{}
+		for _, v := range lval {
+			res = append(res, convertDocumentNode(v))
+		}
+
+		return res
+
+	}
+
+	if mval, ok := val.(map[interface{}]interface{}); ok {
+
+		res := map[string]interface{}{}
+
+		for k, v := range mval {
+			res[k.(string)] = convertDocumentNode(v)
+		}
+
+		return res
+
+	}
+
+	return val
+}