mirror of
https://github.com/open-policy-agent/opa.git
synced 2026-08-25 17:55:15 -06:00
Ansu Varghese
cc1cecf567
New support to input a JSON schema file via "opa eval --schema" that helps improve static type checking and returns precise error reports as you develop Rego code. Also, uses modified version of https://github.com/xeipuuv/gojsonschema from internal/ to help set Rego types, using gojsonschema's Compiler results. See README docs for more details on the feature. Co-authored-by: Mandana Vaziri <mvaziri@us.ibm.com> Co-authored-by: Ansu Varghese <avarghese@us.ibm.com> Signed-off-by: Ansu Varghese <avarghese@us.ibm.com>
74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
// Copyright 2013 MongoDB, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// author tolsen
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// author-github https://github.com/tolsen
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//
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// repository-name gojsonschema
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// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language.
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//
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// description Implements a persistent (immutable w/ shared structure) singly-linked list of strings for the purpose of storing a json context
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//
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// created 04-09-2013
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package gojsonschema
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import "bytes"
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// JSONContext implements a persistent linked-list of strings
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type JSONContext struct {
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head string
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tail *JSONContext
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}
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// NewJSONContext creates a new JSONContext
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func NewJSONContext(head string, tail *JSONContext) *JSONContext {
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return &JSONContext{head, tail}
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}
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// String displays the context in reverse.
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// This plays well with the data structure's persistent nature with
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// Cons and a json document's tree structure.
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func (c *JSONContext) String(del ...string) string {
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byteArr := make([]byte, 0, c.stringLen())
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buf := bytes.NewBuffer(byteArr)
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c.writeStringToBuffer(buf, del)
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return buf.String()
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}
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func (c *JSONContext) stringLen() int {
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length := 0
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if c.tail != nil {
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length = c.tail.stringLen() + 1 // add 1 for "."
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}
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length += len(c.head)
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return length
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}
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func (c *JSONContext) writeStringToBuffer(buf *bytes.Buffer, del []string) {
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if c.tail != nil {
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c.tail.writeStringToBuffer(buf, del)
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if len(del) > 0 {
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buf.WriteString(del[0])
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} else {
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buf.WriteString(".")
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}
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}
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buf.WriteString(c.head)
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}
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