Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "ApiChecker.h" |
| 18 | |
| 19 | #include <string> |
| 20 | #include <unordered_map> |
| 21 | |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 22 | using android::base::Result; |
| 23 | |
| 24 | namespace { |
| 25 | |
| 26 | Result<void> CompareProps(const sysprop::Properties& latest, |
| 27 | const sysprop::Properties& current) { |
| 28 | std::unordered_map<std::string, sysprop::Property> props; |
Inseob Kim | db8187c | 2020-04-23 16:19:47 +0900 | [diff] [blame] | 29 | std::unordered_map<std::string, sysprop::Property> legacy_props; |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 30 | |
| 31 | for (int i = 0; i < current.prop_size(); ++i) { |
| 32 | const auto& prop = current.prop(i); |
| 33 | props[prop.api_name()] = prop; |
Inseob Kim | db8187c | 2020-04-23 16:19:47 +0900 | [diff] [blame] | 34 | if (!prop.legacy_prop_name().empty()) { |
| 35 | legacy_props[prop.legacy_prop_name()] = prop; |
| 36 | } |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 37 | } |
| 38 | |
| 39 | std::string err; |
| 40 | |
| 41 | bool latest_empty = true; |
| 42 | for (int i = 0; i < latest.prop_size(); ++i) { |
| 43 | const auto& latest_prop = latest.prop(i); |
Inseob Kim | 715a69e | 2019-12-03 16:50:50 +0900 | [diff] [blame] | 44 | if (latest_prop.deprecated() || latest_prop.scope() == sysprop::Internal) { |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 45 | continue; |
| 46 | } |
| 47 | |
| 48 | latest_empty = false; |
| 49 | |
Inseob Kim | db8187c | 2020-04-23 16:19:47 +0900 | [diff] [blame] | 50 | // Error if a prop from the latest API doesn't exist in the current API. |
| 51 | // But allow removal if any legacy_prop_name in the current API is |
| 52 | // identical to prop_name. |
| 53 | bool legacy = false; |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 54 | auto itr = props.find(latest_prop.api_name()); |
Inseob Kim | db8187c | 2020-04-23 16:19:47 +0900 | [diff] [blame] | 55 | sysprop::Property current_prop; |
| 56 | if (itr != props.end()) { |
| 57 | current_prop = itr->second; |
| 58 | } else { |
| 59 | auto legacy_itr = legacy_props.find(latest_prop.prop_name()); |
| 60 | if (legacy_itr != legacy_props.end()) { |
| 61 | legacy = true; |
| 62 | current_prop = legacy_itr->second; |
| 63 | } else { |
| 64 | err += "Prop " + latest_prop.api_name() + " has been removed\n"; |
| 65 | continue; |
| 66 | } |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 67 | } |
| 68 | |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 69 | if (latest_prop.type() != current_prop.type()) { |
| 70 | err += "Type of prop " + latest_prop.api_name() + " has been changed\n"; |
| 71 | } |
| 72 | // Readonly > Writeonce > ReadWrite |
| 73 | if (latest_prop.access() > current_prop.access()) { |
| 74 | err += "Accessibility of prop " + latest_prop.api_name() + |
| 75 | " has become more restrictive\n"; |
| 76 | } |
| 77 | // Public < Internal |
| 78 | if (latest_prop.scope() < current_prop.scope()) { |
| 79 | err += "Scope of prop " + latest_prop.api_name() + |
| 80 | " has become more restrictive\n"; |
| 81 | } |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 82 | if (latest_prop.enum_values() != current_prop.enum_values()) { |
| 83 | err += "Enum values of prop " + latest_prop.api_name() + |
| 84 | " has been changed\n"; |
| 85 | } |
| 86 | if (latest_prop.integer_as_bool() != current_prop.integer_as_bool()) { |
| 87 | err += "Integer-as-bool of prop " + latest_prop.api_name() + |
| 88 | " has been changed\n"; |
| 89 | } |
Inseob Kim | db8187c | 2020-04-23 16:19:47 +0900 | [diff] [blame] | 90 | // If current_prop is new and latest_prop is legacy, skip prop name compare |
| 91 | // because latest_prop.prop_name() == current_prop.legacy_prop_name() |
| 92 | if (!legacy) { |
| 93 | if (latest_prop.prop_name() != current_prop.prop_name()) { |
| 94 | err += "Underlying property of prop " + latest_prop.api_name() + |
| 95 | " has been changed\n"; |
| 96 | } |
| 97 | if (latest_prop.legacy_prop_name() != current_prop.legacy_prop_name()) { |
| 98 | err += "Legacy prop of prop " + latest_prop.api_name() + |
| 99 | " has been changed\n"; |
| 100 | } |
Inseob Kim | 3f452c0 | 2020-03-31 13:41:19 +0900 | [diff] [blame] | 101 | } |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | if (!latest_empty) { |
| 105 | if (latest.owner() != current.owner()) { |
| 106 | err += "owner of module " + latest.module() + " has been changed\n"; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | if (err.empty()) |
| 111 | return {}; |
| 112 | else |
| 113 | return Errorf("{}", err); |
| 114 | } |
| 115 | |
| 116 | } // namespace |
| 117 | |
| 118 | Result<void> CompareApis(const sysprop::SyspropLibraryApis& latest, |
| 119 | const sysprop::SyspropLibraryApis& current) { |
| 120 | std::unordered_map<std::string, sysprop::Properties> propsMap; |
| 121 | |
| 122 | for (int i = 0; i < current.props_size(); ++i) { |
| 123 | propsMap[current.props(i).module()] = current.props(i); |
| 124 | } |
| 125 | |
| 126 | for (int i = 0; i < latest.props_size(); ++i) { |
| 127 | // Checking whether propsMap contains latest.props(i)->module() or not |
| 128 | // is intentionally skipped to handle the case that latest.props(i) has |
| 129 | // only deprecated properties. |
| 130 | if (auto res = |
| 131 | CompareProps(latest.props(i), propsMap[latest.props(i).module()]); |
Bernie Innocenti | 7ac8da4 | 2020-02-06 23:30:12 +0900 | [diff] [blame] | 132 | !res.ok()) { |
Inseob Kim | 900fbad | 2019-06-26 14:09:20 +0900 | [diff] [blame] | 133 | return res; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | return {}; |
| 138 | } |