| /* |
| * Copyright (C) 2010 Google Inc. |
| * |
| * 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. |
| */ |
| package com.airbnb.lottie.parser.moshi; |
| |
| /** Lexical scoping elements within a JSON reader or writer. */ |
| final class JsonScope { |
| private JsonScope() { |
| } |
| |
| /** An array with no elements requires no separators or newlines before it is closed. */ |
| static final int EMPTY_ARRAY = 1; |
| |
| /** A array with at least one value requires a comma and newline before the next element. */ |
| static final int NONEMPTY_ARRAY = 2; |
| |
| /** An object with no name/value pairs requires no separators or newlines before it is closed. */ |
| static final int EMPTY_OBJECT = 3; |
| |
| /** An object whose most recent element is a key. The next element must be a value. */ |
| static final int DANGLING_NAME = 4; |
| |
| /** An object with at least one name/value pair requires a separator before the next element. */ |
| static final int NONEMPTY_OBJECT = 5; |
| |
| /** No object or array has been started. */ |
| static final int EMPTY_DOCUMENT = 6; |
| |
| /** A document with at an array or object. */ |
| static final int NONEMPTY_DOCUMENT = 7; |
| |
| /** A document that's been closed and cannot be accessed. */ |
| static final int CLOSED = 8; |
| |
| /** |
| * Renders the path in a JSON document to a string. The {@code pathNames} and {@code pathIndices} |
| * parameters corresponds directly to stack: At indices where the stack contains an object |
| * (EMPTY_OBJECT, DANGLING_NAME or NONEMPTY_OBJECT), pathNames contains the name at this scope. |
| * Where it contains an array (EMPTY_ARRAY, NONEMPTY_ARRAY) pathIndices contains the current index |
| * in that array. Otherwise the value is undefined, and we take advantage of that by incrementing |
| * pathIndices when doing so isn't useful. |
| */ |
| static String getPath(int stackSize, int[] stack, String[] pathNames, int[] pathIndices) { |
| StringBuilder result = new StringBuilder().append('$'); |
| for (int i = 0; i < stackSize; i++) { |
| switch (stack[i]) { |
| case EMPTY_ARRAY: |
| case NONEMPTY_ARRAY: |
| result.append('[').append(pathIndices[i]).append(']'); |
| break; |
| |
| case EMPTY_OBJECT: |
| case DANGLING_NAME: |
| case NONEMPTY_OBJECT: |
| result.append('.'); |
| if (pathNames[i] != null) { |
| result.append(pathNames[i]); |
| } |
| break; |
| |
| case NONEMPTY_DOCUMENT: |
| case EMPTY_DOCUMENT: |
| case CLOSED: |
| break; |
| } |
| } |
| return result.toString(); |
| } |
| } |