Andreas Huber | 1aec397 | 2016-08-26 09:26:32 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 | |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 17 | #include "HandleType.h" |
| 18 | |
Iliyan Malchev | a72e0d2 | 2016-09-09 11:03:08 -0700 | [diff] [blame] | 19 | #include <hidl-util/Formatter.h> |
Andreas Huber | 2831d51 | 2016-08-15 09:33:47 -0700 | [diff] [blame] | 20 | #include <android-base/logging.h> |
| 21 | |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 22 | namespace android { |
| 23 | |
| 24 | HandleType::HandleType() {} |
| 25 | |
Steven Moreland | 979e099 | 2016-09-07 09:18:08 -0700 | [diff] [blame] | 26 | void HandleType::addNamedTypesToSet(std::set<const FQName> &) const { |
| 27 | // do nothing |
| 28 | } |
| 29 | |
Martijn Coenen | ac58789 | 2016-11-17 15:14:19 +0100 | [diff] [blame] | 30 | std::string HandleType::getCppType(StorageMode mode, |
Steven Moreland | 979e099 | 2016-09-07 09:18:08 -0700 | [diff] [blame] | 31 | bool specifyNamespaces) const { |
Steven Moreland | 979e099 | 2016-09-07 09:18:08 -0700 | [diff] [blame] | 32 | const std::string base = |
Martijn Coenen | 2f69a5b | 2016-11-18 15:26:38 +0100 | [diff] [blame] | 33 | std::string(specifyNamespaces ? "::android::hardware::" : "") |
| 34 | + "hidl_handle"; |
| 35 | |
| 36 | switch (mode) { |
| 37 | case StorageMode_Stack: |
| 38 | return base; |
| 39 | |
| 40 | case StorageMode_Argument: |
| 41 | return "const " + base + "&"; |
| 42 | |
| 43 | case StorageMode_Result: |
| 44 | return base; |
Martijn Coenen | ac58789 | 2016-11-17 15:14:19 +0100 | [diff] [blame] | 45 | } |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 46 | } |
| 47 | |
| 48 | void HandleType::emitReaderWriter( |
| 49 | Formatter &out, |
| 50 | const std::string &name, |
| 51 | const std::string &parcelObj, |
| 52 | bool parcelObjIsPointer, |
| 53 | bool isReader, |
| 54 | ErrorMode mode) const { |
| 55 | const std::string parcelObjDeref = |
| 56 | parcelObj + (parcelObjIsPointer ? "->" : "."); |
| 57 | |
| 58 | if (isReader) { |
| 59 | out << name |
| 60 | << " = " |
Andreas Huber | e852c7d | 2016-08-09 13:12:18 -0700 | [diff] [blame] | 61 | << parcelObjDeref |
| 62 | << "readNativeHandleNoDup();\n\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 63 | |
| 64 | out << "if (" |
| 65 | << name |
| 66 | << " == nullptr) {\n"; |
| 67 | |
| 68 | out.indent(); |
| 69 | |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 70 | out << "_hidl_err = ::android::UNKNOWN_ERROR;\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 71 | handleError2(out, mode); |
| 72 | |
| 73 | out.unindent(); |
| 74 | out << "}\n\n"; |
| 75 | } else { |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 76 | out << "_hidl_err = "; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 77 | out << parcelObjDeref |
Andreas Huber | e852c7d | 2016-08-09 13:12:18 -0700 | [diff] [blame] | 78 | << "writeNativeHandleNoDup(" |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 79 | << name |
Andreas Huber | e852c7d | 2016-08-09 13:12:18 -0700 | [diff] [blame] | 80 | << ");\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 81 | |
| 82 | handleError(out, mode); |
| 83 | } |
| 84 | } |
| 85 | |
Yifan Hong | 244e82d | 2016-11-11 11:13:57 -0800 | [diff] [blame] | 86 | bool HandleType::useNameInEmitReaderWriterEmbedded(bool isReader) const { |
| 87 | return !isReader; |
| 88 | } |
| 89 | |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 90 | void HandleType::emitReaderWriterEmbedded( |
| 91 | Formatter &out, |
Andreas Huber | f9d49f1 | 2016-09-12 14:58:36 -0700 | [diff] [blame] | 92 | size_t /* depth */, |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 93 | const std::string &name, |
Yifan Hong | be2a373 | 2016-10-05 13:33:41 -0700 | [diff] [blame] | 94 | const std::string &sanitizedName, |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 95 | bool nameIsPointer, |
| 96 | const std::string &parcelObj, |
| 97 | bool parcelObjIsPointer, |
| 98 | bool isReader, |
| 99 | ErrorMode mode, |
| 100 | const std::string &parentName, |
| 101 | const std::string &offsetText) const { |
| 102 | if (isReader) { |
Yifan Hong | be2a373 | 2016-10-05 13:33:41 -0700 | [diff] [blame] | 103 | const std::string ptrName = "_hidl_" + sanitizedName + "_ptr"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 104 | |
| 105 | out << "const native_handle_t *" |
| 106 | << ptrName |
| 107 | << " = " |
| 108 | << parcelObj |
| 109 | << (parcelObjIsPointer ? "->" : ".") |
| 110 | << "readEmbeddedNativeHandle(\n"; |
| 111 | |
| 112 | out.indent(); |
| 113 | out.indent(); |
| 114 | |
| 115 | out << parentName |
| 116 | << ",\n" |
| 117 | << offsetText |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 118 | << ");\n\n"; |
| 119 | |
| 120 | out.unindent(); |
| 121 | out.unindent(); |
| 122 | |
| 123 | out << "if (" |
| 124 | << ptrName |
| 125 | << " == nullptr) {\n"; |
| 126 | |
| 127 | out.indent(); |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 128 | out << "_hidl_err = ::android::UNKNOWN_ERROR;\n"; |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 129 | handleError2(out, mode); |
| 130 | out.unindent(); |
| 131 | out << "}\n\n"; |
| 132 | } else { |
Iliyan Malchev | 549e259 | 2016-08-10 08:59:12 -0700 | [diff] [blame] | 133 | out << "_hidl_err = " |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 134 | << parcelObj |
| 135 | << (parcelObjIsPointer ? "->" : ".") |
| 136 | << "writeEmbeddedNativeHandle(\n"; |
| 137 | |
| 138 | out.indent(); |
| 139 | out.indent(); |
| 140 | |
Andreas Huber | e852c7d | 2016-08-09 13:12:18 -0700 | [diff] [blame] | 141 | out << (nameIsPointer ? ("*" + name) : name) |
| 142 | << ",\n" |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 143 | << parentName |
| 144 | << ",\n" |
| 145 | << offsetText |
Andreas Huber | 881227d | 2016-08-02 14:20:21 -0700 | [diff] [blame] | 146 | << ");\n\n"; |
| 147 | |
| 148 | out.unindent(); |
| 149 | out.unindent(); |
| 150 | |
| 151 | handleError(out, mode); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | bool HandleType::needsEmbeddedReadWrite() const { |
| 156 | return true; |
| 157 | } |
| 158 | |
Andreas Huber | 70a59e1 | 2016-08-16 12:57:01 -0700 | [diff] [blame] | 159 | bool HandleType::isJavaCompatible() const { |
| 160 | return false; |
| 161 | } |
| 162 | |
Andreas Huber | 85eabdb | 2016-08-25 11:24:49 -0700 | [diff] [blame] | 163 | void HandleType::getAlignmentAndSize(size_t *align, size_t *size) const { |
| 164 | *align = *size = 8; |
| 165 | } |
| 166 | |
Andreas Huber | c9410c7 | 2016-07-28 12:18:40 -0700 | [diff] [blame] | 167 | } // namespace android |
| 168 | |