1// Copyright 2017 Google Inc. All Rights Reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//    http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package compiler
16
17// Context contains state of the compiler as it traverses a document.
18type Context struct {
19	Parent            *Context
20	Name              string
21	ExtensionHandlers *[]ExtensionHandler
22}
23
24// NewContextWithExtensions returns a new object representing the compiler state
25func NewContextWithExtensions(name string, parent *Context, extensionHandlers *[]ExtensionHandler) *Context {
26	return &Context{Name: name, Parent: parent, ExtensionHandlers: extensionHandlers}
27}
28
29// NewContext returns a new object representing the compiler state
30func NewContext(name string, parent *Context) *Context {
31	if parent != nil {
32		return &Context{Name: name, Parent: parent, ExtensionHandlers: parent.ExtensionHandlers}
33	}
34	return &Context{Name: name, Parent: parent, ExtensionHandlers: nil}
35}
36
37// Description returns a text description of the compiler state
38func (context *Context) Description() string {
39	if context.Parent != nil {
40		return context.Parent.Description() + "." + context.Name
41	}
42	return context.Name
43}
44