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