Steven Moreland | f1a35f7 | 2016-08-17 08:41:49 -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 | |
| 17 | #include "AST.h" |
| 18 | |
| 19 | #include "FunctionDeclaration.h" |
| 20 | #include "EnumVarDeclaration.h" |
| 21 | #include "Scope.h" |
| 22 | #include "Declaration.h" |
| 23 | #include "CompositeDeclaration.h" |
| 24 | #include "Define.h" |
| 25 | #include "Include.h" |
| 26 | |
| 27 | #include <string> |
| 28 | #include <algorithm> |
| 29 | #include <stdlib.h> |
| 30 | #include <sys/dir.h> |
| 31 | #include <sys/stat.h> |
| 32 | |
| 33 | namespace android { |
| 34 | |
| 35 | AST::AST(const std::string &path, |
| 36 | const std::string &outputDir, |
| 37 | const std::string &package, |
| 38 | bool isOpenGl) |
| 39 | : mScanner(NULL), |
| 40 | mPath(path), |
| 41 | mOutputDir(outputDir), |
| 42 | mPackage(package), |
| 43 | mIsOpenGl(isOpenGl) |
| 44 | {} |
| 45 | |
| 46 | AST::~AST() { |
| 47 | delete mExpression; |
| 48 | |
| 49 | if(mDeclarations != NULL) { |
| 50 | for(auto* decl : *mDeclarations) { |
| 51 | delete decl; |
| 52 | } |
| 53 | } |
| 54 | delete mDeclarations; |
| 55 | |
| 56 | if(mInterfaces != NULL) { |
| 57 | for(auto* inter : *mInterfaces) { |
| 58 | delete inter; |
| 59 | } |
| 60 | } |
| 61 | delete mInterfaces; |
| 62 | |
| 63 | if(mIncludes != NULL) { |
| 64 | for(auto* incl : *mIncludes) { |
| 65 | delete incl; |
| 66 | } |
| 67 | } |
| 68 | delete mIncludes; |
| 69 | } |
| 70 | |
| 71 | void *AST::scanner() { |
| 72 | return mScanner; |
| 73 | } |
| 74 | |
| 75 | void AST::setScanner(void *scanner) { |
| 76 | mScanner = scanner; |
| 77 | } |
| 78 | |
| 79 | bool AST::isOpenGl() const { |
| 80 | return mIsOpenGl; |
| 81 | } |
| 82 | |
| 83 | const std::string& AST::getFilename() const { |
| 84 | return mPath; |
| 85 | } |
| 86 | |
| 87 | void AST::setDeclarations(std::vector<Declaration *> *declarations) { |
| 88 | mDeclarations = declarations; |
| 89 | } |
| 90 | |
| 91 | void AST::setIncludes(std::vector<Include *> *includes) { |
| 92 | mIncludes = includes; |
| 93 | } |
| 94 | |
| 95 | Expression *AST::getExpression() const { |
| 96 | return mExpression; |
| 97 | } |
| 98 | void AST::setExpression(Expression *expression) { |
| 99 | mExpression = expression; |
| 100 | } |
| 101 | |
| 102 | const Scope<Define *> &AST::getDefinesScope() const { |
| 103 | return mDefinesScope; |
| 104 | } |
| 105 | |
| 106 | Scope<Define *> &AST::getDefinesScope() { |
| 107 | return mDefinesScope; |
| 108 | } |
| 109 | |
| 110 | void AST::processContents() { |
| 111 | CHECK(mDeclarations != NULL); |
| 112 | |
| 113 | for (auto &declaration : *mDeclarations) { |
| 114 | CHECK(declaration != NULL); |
| 115 | |
| 116 | declaration->processContents(*this); |
| 117 | } |
| 118 | |
| 119 | isolateInterfaces(); |
| 120 | isolateGlobalInterface(); |
| 121 | isolateIncludes(); |
| 122 | |
| 123 | isolateConstants(Expression::Type::U64); |
| 124 | isolateConstants(Expression::Type::S64); |
| 125 | isolateConstants(Expression::Type::U32); |
| 126 | isolateConstants(Expression::Type::S32); |
| 127 | } |
| 128 | |
| 129 | /* take interface-like structs out of the type file */ |
| 130 | void AST::isolateInterfaces() { |
| 131 | mInterfaces = new std::vector<CompositeDeclaration*>; |
| 132 | |
| 133 | auto it = mDeclarations->begin(); |
| 134 | while (it != mDeclarations->end()) { |
| 135 | if ((*it)->decType() == CompositeDeclaration::type() |
| 136 | && ((CompositeDeclaration *) (*it))->isInterface()) { |
| 137 | |
| 138 | mInterfaces->push_back((CompositeDeclaration *) *it); |
| 139 | it = mDeclarations->erase(it); |
| 140 | } else { |
| 141 | it++; |
| 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | /* take global function declarations out of the type file and into a new |
| 147 | * interface |
| 148 | */ |
| 149 | void AST::isolateGlobalInterface() { |
| 150 | auto globalFuns = new std::vector<Declaration*>; |
| 151 | |
| 152 | auto it = mDeclarations->begin(); |
| 153 | while (it != mDeclarations->end()) { |
| 154 | if ((*it)->decType() == FunctionDeclaration::type()) { |
| 155 | |
| 156 | globalFuns->push_back(*it); |
| 157 | it = mDeclarations->erase(it); |
| 158 | } else { |
| 159 | it++; |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | if (!globalFuns->empty()) { |
| 164 | std::string path = mPackage.substr(0, mPackage.find_first_of('@')); |
| 165 | std::string name = path.substr(path.find_last_of('.') + 1); |
| 166 | |
| 167 | auto interface = new CompositeDeclaration( |
| 168 | Type::Qualifier::STRUCT, |
| 169 | name + "_global_t", |
| 170 | globalFuns); |
| 171 | |
| 172 | mInterfaces->push_back(interface); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | void AST::isolateIncludes() { |
| 177 | mIncludes = new std::vector<Include*>; |
| 178 | |
| 179 | auto it = mDeclarations->begin(); |
| 180 | while (it != mDeclarations->end()) { |
| 181 | if ((*it)->decType() == Include::type()) { |
| 182 | |
| 183 | mIncludes->push_back((Include *) *it); |
| 184 | it = mDeclarations->erase(it); |
| 185 | } else { |
| 186 | it++; |
| 187 | } |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | void AST::isolateConstants(Expression::Type ofType) { |
| 192 | auto constants = new std::vector<Declaration*>; |
| 193 | |
| 194 | auto it = mDeclarations->begin(); |
| 195 | while (it != mDeclarations->end()) { |
| 196 | if ((*it)->decType() == Define::type() && |
| 197 | ((Define *)*it)->getExpressionType() == ofType) { |
| 198 | |
| 199 | Define* define = (Define *)*it; |
| 200 | |
| 201 | auto var = new EnumVarDeclaration(define->getName(), |
| 202 | define->getExpression()); |
| 203 | |
| 204 | define->setExpression(NULL); |
| 205 | |
| 206 | constants->push_back(var); |
| 207 | it = mDeclarations->erase(it); |
| 208 | |
| 209 | delete define; |
| 210 | } else { |
| 211 | it++; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | if (!constants->empty()) { |
| 216 | auto constEnum = new CompositeDeclaration( |
| 217 | Type::Qualifier::ENUM, |
| 218 | "Const" + Expression::getTypeDescription(ofType), |
| 219 | constants); |
| 220 | |
| 221 | constEnum->setEnumTypeName(Expression::getTypeName(ofType)); |
| 222 | |
| 223 | mDeclarations->insert(mDeclarations->begin(), constEnum); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | status_t AST::generateCode() const { |
| 228 | CHECK(mDeclarations != NULL); |
| 229 | |
| 230 | status_t err; |
| 231 | |
| 232 | for (auto &interface : *mInterfaces) { |
| 233 | err = generateFile(interface); |
| 234 | |
| 235 | if (err != OK) { |
| 236 | return err; |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | err = generateTypesFile(); |
| 241 | |
| 242 | if (err != OK) { |
| 243 | return err; |
| 244 | } |
| 245 | |
| 246 | return OK; |
| 247 | } |
| 248 | |
| 249 | status_t AST::generateFile(CompositeDeclaration* declaration) const { |
| 250 | std::string fileName = declaration->getInterfaceName() + ".hal"; |
| 251 | |
| 252 | FILE *file = fopen((getFileDir() + fileName).c_str(), "w"); |
| 253 | |
| 254 | if(file == NULL) { |
| 255 | return -errno; |
| 256 | } |
| 257 | |
| 258 | Formatter out(file); // formatter closes out |
| 259 | |
| 260 | generatePackageLine(out); |
| 261 | generateIncludes(out); |
| 262 | |
| 263 | declaration->generateInterface(out); |
| 264 | |
| 265 | return OK; |
| 266 | } |
| 267 | |
| 268 | status_t AST::generateTypesFile() const { |
| 269 | if (mDeclarations->empty()) { |
| 270 | return OK; |
| 271 | } |
| 272 | |
| 273 | FILE *file = fopen((getFileDir() + "types.hal").c_str(), "w"); |
| 274 | |
| 275 | if(file == NULL) { |
| 276 | return -errno; |
| 277 | } |
| 278 | |
| 279 | Formatter out(file); // formatter closes out |
| 280 | |
| 281 | generatePackageLine(out); |
| 282 | generateIncludes(out); |
| 283 | |
| 284 | for (auto &declaration : *mDeclarations) { |
| 285 | declaration->generateCommentText(out); |
| 286 | declaration->generateSource(out); |
| 287 | out << "\n"; |
| 288 | } |
| 289 | |
| 290 | return OK; |
| 291 | } |
| 292 | |
| 293 | void AST::generateIncludes(Formatter &out) const { |
| 294 | for (auto &include : *mIncludes) { |
| 295 | include->generateSource(out); |
| 296 | out << "\n"; |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | void AST::generatePackageLine(Formatter &out) const { |
| 301 | out << "package " |
| 302 | << mPackage |
| 303 | << ";\n\n"; |
| 304 | } |
| 305 | |
| 306 | bool MakeParentHierarchy(const std::string &path) { |
| 307 | static const mode_t kMode = 0755; |
| 308 | |
| 309 | size_t start = 1; // Ignore leading '/' |
| 310 | size_t slashPos; |
| 311 | while ((slashPos = path.find("/", start)) != std::string::npos) { |
| 312 | std::string partial = path.substr(0, slashPos); |
| 313 | |
| 314 | struct stat st; |
| 315 | if (stat(partial.c_str(), &st) < 0) { |
| 316 | if (errno != ENOENT) { |
| 317 | return false; |
| 318 | } |
| 319 | |
| 320 | int res = mkdir(partial.c_str(), kMode); |
| 321 | if (res < 0) { |
| 322 | return false; |
| 323 | } |
| 324 | } else if (!S_ISDIR(st.st_mode)) { |
| 325 | return false; |
| 326 | } |
| 327 | |
| 328 | start = slashPos + 1; |
| 329 | } |
| 330 | |
| 331 | return true; |
| 332 | } |
| 333 | |
| 334 | const std::string AST::getFileDir() const { |
| 335 | CHECK(MakeParentHierarchy(mOutputDir)); |
| 336 | return mOutputDir; |
| 337 | } |
| 338 | |
| 339 | } // namespace android |