Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1 | // Copyright 2009 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include <v8.h> |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 29 | #include <v8-testing.h> |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 30 | #include <assert.h> |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 31 | #include <fcntl.h> |
| 32 | #include <string.h> |
| 33 | #include <stdio.h> |
| 34 | #include <stdlib.h> |
| 35 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 36 | // When building with V8 in a shared library we cannot use functions which |
| 37 | // is not explicitly a part of the public V8 API. This extensive use of |
| 38 | // #ifndef USING_V8_SHARED/#endif is a hack until we can resolve whether to |
| 39 | // still use the shell sample for testing or change to use the developer |
| 40 | // shell d8 TODO(1272). |
| 41 | #ifndef USING_V8_SHARED |
| 42 | #include "../src/v8.h" |
| 43 | #endif // USING_V8_SHARED |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 44 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 45 | #if !defined(_WIN32) && !defined(_WIN64) |
| 46 | #include <unistd.h> // NOLINT |
| 47 | #endif |
| 48 | |
| 49 | static void ExitShell(int exit_code) { |
| 50 | // Use _exit instead of exit to avoid races between isolate |
| 51 | // threads and static destructors. |
| 52 | fflush(stdout); |
| 53 | fflush(stderr); |
| 54 | _exit(exit_code); |
| 55 | } |
| 56 | |
| 57 | v8::Persistent<v8::Context> CreateShellContext(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 58 | void RunShell(v8::Handle<v8::Context> context); |
| 59 | bool ExecuteString(v8::Handle<v8::String> source, |
| 60 | v8::Handle<v8::Value> name, |
| 61 | bool print_result, |
| 62 | bool report_exceptions); |
| 63 | v8::Handle<v8::Value> Print(const v8::Arguments& args); |
| 64 | v8::Handle<v8::Value> Read(const v8::Arguments& args); |
| 65 | v8::Handle<v8::Value> Load(const v8::Arguments& args); |
| 66 | v8::Handle<v8::Value> Quit(const v8::Arguments& args); |
| 67 | v8::Handle<v8::Value> Version(const v8::Arguments& args); |
| 68 | v8::Handle<v8::String> ReadFile(const char* name); |
| 69 | void ReportException(v8::TryCatch* handler); |
| 70 | |
| 71 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 72 | static bool last_run = true; |
| 73 | |
| 74 | class SourceGroup { |
| 75 | public: |
| 76 | SourceGroup() : |
| 77 | #ifndef USING_V8_SHARED |
| 78 | next_semaphore_(v8::internal::OS::CreateSemaphore(0)), |
| 79 | done_semaphore_(v8::internal::OS::CreateSemaphore(0)), |
| 80 | thread_(NULL), |
| 81 | #endif // USING_V8_SHARED |
| 82 | argv_(NULL), |
| 83 | begin_offset_(0), |
| 84 | end_offset_(0) { } |
| 85 | |
| 86 | void Begin(char** argv, int offset) { |
| 87 | argv_ = const_cast<const char**>(argv); |
| 88 | begin_offset_ = offset; |
| 89 | } |
| 90 | |
| 91 | void End(int offset) { end_offset_ = offset; } |
| 92 | |
| 93 | void Execute() { |
| 94 | for (int i = begin_offset_; i < end_offset_; ++i) { |
| 95 | const char* arg = argv_[i]; |
| 96 | if (strcmp(arg, "-e") == 0 && i + 1 < end_offset_) { |
| 97 | // Execute argument given to -e option directly. |
| 98 | v8::HandleScope handle_scope; |
| 99 | v8::Handle<v8::String> file_name = v8::String::New("unnamed"); |
| 100 | v8::Handle<v8::String> source = v8::String::New(argv_[i + 1]); |
| 101 | if (!ExecuteString(source, file_name, false, true)) { |
| 102 | ExitShell(1); |
| 103 | return; |
| 104 | } |
| 105 | ++i; |
| 106 | } else if (arg[0] == '-') { |
| 107 | // Ignore other options. They have been parsed already. |
| 108 | } else { |
| 109 | // Use all other arguments as names of files to load and run. |
| 110 | v8::HandleScope handle_scope; |
| 111 | v8::Handle<v8::String> file_name = v8::String::New(arg); |
| 112 | v8::Handle<v8::String> source = ReadFile(arg); |
| 113 | if (source.IsEmpty()) { |
| 114 | printf("Error reading '%s'\n", arg); |
| 115 | } |
| 116 | if (!ExecuteString(source, file_name, false, true)) { |
| 117 | ExitShell(1); |
| 118 | return; |
| 119 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 120 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 121 | } |
| 122 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 123 | |
| 124 | #ifndef USING_V8_SHARED |
| 125 | void StartExecuteInThread() { |
| 126 | if (thread_ == NULL) { |
| 127 | thread_ = new IsolateThread(this); |
| 128 | thread_->Start(); |
| 129 | } |
| 130 | next_semaphore_->Signal(); |
| 131 | } |
| 132 | |
| 133 | void WaitForThread() { |
| 134 | if (thread_ == NULL) return; |
| 135 | if (last_run) { |
| 136 | thread_->Join(); |
| 137 | thread_ = NULL; |
| 138 | } else { |
| 139 | done_semaphore_->Wait(); |
| 140 | } |
| 141 | } |
| 142 | #endif // USING_V8_SHARED |
| 143 | |
| 144 | private: |
| 145 | #ifndef USING_V8_SHARED |
| 146 | static v8::internal::Thread::Options GetThreadOptions() { |
| 147 | v8::internal::Thread::Options options; |
| 148 | options.name = "IsolateThread"; |
| 149 | // On some systems (OSX 10.6) the stack size default is 0.5Mb or less |
| 150 | // which is not enough to parse the big literal expressions used in tests. |
| 151 | // The stack size should be at least StackGuard::kLimitSize + some |
| 152 | // OS-specific padding for thread startup code. |
| 153 | options.stack_size = 2 << 20; // 2 Mb seems to be enough |
| 154 | return options; |
| 155 | } |
| 156 | |
| 157 | class IsolateThread : public v8::internal::Thread { |
| 158 | public: |
| 159 | explicit IsolateThread(SourceGroup* group) |
| 160 | : v8::internal::Thread(NULL, GetThreadOptions()), group_(group) {} |
| 161 | |
| 162 | virtual void Run() { |
| 163 | group_->ExecuteInThread(); |
| 164 | } |
| 165 | |
| 166 | private: |
| 167 | SourceGroup* group_; |
| 168 | }; |
| 169 | |
| 170 | void ExecuteInThread() { |
| 171 | v8::Isolate* isolate = v8::Isolate::New(); |
| 172 | do { |
| 173 | if (next_semaphore_ != NULL) next_semaphore_->Wait(); |
| 174 | { |
| 175 | v8::Isolate::Scope iscope(isolate); |
| 176 | v8::HandleScope scope; |
| 177 | v8::Persistent<v8::Context> context = CreateShellContext(); |
| 178 | { |
| 179 | v8::Context::Scope cscope(context); |
| 180 | Execute(); |
| 181 | } |
| 182 | context.Dispose(); |
| 183 | } |
| 184 | if (done_semaphore_ != NULL) done_semaphore_->Signal(); |
| 185 | } while (!last_run); |
| 186 | isolate->Dispose(); |
| 187 | } |
| 188 | |
| 189 | v8::internal::Semaphore* next_semaphore_; |
| 190 | v8::internal::Semaphore* done_semaphore_; |
| 191 | v8::internal::Thread* thread_; |
| 192 | #endif // USING_V8_SHARED |
| 193 | |
| 194 | const char** argv_; |
| 195 | int begin_offset_; |
| 196 | int end_offset_; |
| 197 | }; |
| 198 | |
| 199 | |
| 200 | static SourceGroup* isolate_sources = NULL; |
| 201 | |
| 202 | |
| 203 | int RunMain(int argc, char* argv[]) { |
| 204 | v8::V8::SetFlagsFromCommandLine(&argc, argv, true); |
| 205 | v8::HandleScope handle_scope; |
| 206 | v8::Persistent<v8::Context> context = CreateShellContext(); |
| 207 | // Enter the newly created execution environment. |
| 208 | context->Enter(); |
| 209 | if (context.IsEmpty()) { |
| 210 | printf("Error creating context\n"); |
| 211 | return 1; |
| 212 | } |
| 213 | |
| 214 | bool run_shell = (argc == 1); |
| 215 | int num_isolates = 1; |
| 216 | for (int i = 1; i < argc; i++) { |
| 217 | if (strcmp(argv[i], "--isolate") == 0) { |
| 218 | #ifndef USING_V8_SHARED |
| 219 | ++num_isolates; |
| 220 | #else // USING_V8_SHARED |
| 221 | printf("Error: --isolate not supported when linked with shared " |
| 222 | "library\n"); |
| 223 | ExitShell(1); |
| 224 | #endif // USING_V8_SHARED |
| 225 | } |
| 226 | } |
| 227 | if (isolate_sources == NULL) { |
| 228 | isolate_sources = new SourceGroup[num_isolates]; |
| 229 | SourceGroup* current = isolate_sources; |
| 230 | current->Begin(argv, 1); |
| 231 | for (int i = 1; i < argc; i++) { |
| 232 | const char* str = argv[i]; |
| 233 | if (strcmp(str, "--isolate") == 0) { |
| 234 | current->End(i); |
| 235 | current++; |
| 236 | current->Begin(argv, i + 1); |
| 237 | } else if (strcmp(str, "--shell") == 0) { |
| 238 | run_shell = true; |
| 239 | } else if (strcmp(str, "-f") == 0) { |
| 240 | // Ignore any -f flags for compatibility with the other stand- |
| 241 | // alone JavaScript engines. |
| 242 | continue; |
| 243 | } else if (strncmp(str, "--", 2) == 0) { |
| 244 | printf("Warning: unknown flag %s.\nTry --help for options\n", str); |
| 245 | } |
| 246 | } |
| 247 | current->End(argc); |
| 248 | } |
| 249 | #ifndef USING_V8_SHARED |
| 250 | for (int i = 1; i < num_isolates; ++i) { |
| 251 | isolate_sources[i].StartExecuteInThread(); |
| 252 | } |
| 253 | #endif // USING_V8_SHARED |
| 254 | isolate_sources[0].Execute(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 255 | if (run_shell) RunShell(context); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 256 | #ifndef USING_V8_SHARED |
| 257 | for (int i = 1; i < num_isolates; ++i) { |
| 258 | isolate_sources[i].WaitForThread(); |
| 259 | } |
| 260 | #endif // USING_V8_SHARED |
| 261 | if (last_run) { |
| 262 | delete[] isolate_sources; |
| 263 | isolate_sources = NULL; |
| 264 | } |
| 265 | context->Exit(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 266 | context.Dispose(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | |
| 271 | int main(int argc, char* argv[]) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 272 | // Figure out if we're requested to stress the optimization |
| 273 | // infrastructure by running tests multiple times and forcing |
| 274 | // optimization in the last run. |
| 275 | bool FLAG_stress_opt = false; |
| 276 | bool FLAG_stress_deopt = false; |
| 277 | for (int i = 0; i < argc; i++) { |
| 278 | if (strcmp(argv[i], "--stress-opt") == 0) { |
| 279 | FLAG_stress_opt = true; |
| 280 | argv[i] = NULL; |
| 281 | } else if (strcmp(argv[i], "--stress-deopt") == 0) { |
| 282 | FLAG_stress_deopt = true; |
| 283 | argv[i] = NULL; |
| 284 | } else if (strcmp(argv[i], "--noalways-opt") == 0) { |
| 285 | // No support for stressing if we can't use --always-opt. |
| 286 | FLAG_stress_opt = false; |
| 287 | FLAG_stress_deopt = false; |
| 288 | break; |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | v8::V8::SetFlagsFromCommandLine(&argc, argv, true); |
| 293 | int result = 0; |
| 294 | if (FLAG_stress_opt || FLAG_stress_deopt) { |
| 295 | v8::Testing::SetStressRunType(FLAG_stress_opt |
| 296 | ? v8::Testing::kStressTypeOpt |
| 297 | : v8::Testing::kStressTypeDeopt); |
| 298 | int stress_runs = v8::Testing::GetStressRuns(); |
| 299 | for (int i = 0; i < stress_runs && result == 0; i++) { |
| 300 | printf("============ Stress %d/%d ============\n", |
| 301 | i + 1, stress_runs); |
| 302 | v8::Testing::PrepareStressRun(i); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 303 | last_run = (i == stress_runs - 1); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 304 | result = RunMain(argc, argv); |
| 305 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 306 | printf("======== Full Deoptimization =======\n"); |
| 307 | v8::Testing::DeoptimizeAll(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 308 | } else { |
| 309 | result = RunMain(argc, argv); |
| 310 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 311 | v8::V8::Dispose(); |
| 312 | return result; |
| 313 | } |
| 314 | |
| 315 | |
| 316 | // Extracts a C string from a V8 Utf8Value. |
| 317 | const char* ToCString(const v8::String::Utf8Value& value) { |
| 318 | return *value ? *value : "<string conversion failed>"; |
| 319 | } |
| 320 | |
| 321 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 322 | // Creates a new execution environment containing the built-in |
| 323 | // functions. |
| 324 | v8::Persistent<v8::Context> CreateShellContext() { |
| 325 | // Create a template for the global object. |
| 326 | v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(); |
| 327 | // Bind the global 'print' function to the C++ Print callback. |
| 328 | global->Set(v8::String::New("print"), v8::FunctionTemplate::New(Print)); |
| 329 | // Bind the global 'read' function to the C++ Read callback. |
| 330 | global->Set(v8::String::New("read"), v8::FunctionTemplate::New(Read)); |
| 331 | // Bind the global 'load' function to the C++ Load callback. |
| 332 | global->Set(v8::String::New("load"), v8::FunctionTemplate::New(Load)); |
| 333 | // Bind the 'quit' function |
| 334 | global->Set(v8::String::New("quit"), v8::FunctionTemplate::New(Quit)); |
| 335 | // Bind the 'version' function |
| 336 | global->Set(v8::String::New("version"), v8::FunctionTemplate::New(Version)); |
| 337 | return v8::Context::New(NULL, global); |
| 338 | } |
| 339 | |
| 340 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 341 | // The callback that is invoked by v8 whenever the JavaScript 'print' |
| 342 | // function is called. Prints its arguments on stdout separated by |
| 343 | // spaces and ending with a newline. |
| 344 | v8::Handle<v8::Value> Print(const v8::Arguments& args) { |
| 345 | bool first = true; |
| 346 | for (int i = 0; i < args.Length(); i++) { |
| 347 | v8::HandleScope handle_scope; |
| 348 | if (first) { |
| 349 | first = false; |
| 350 | } else { |
| 351 | printf(" "); |
| 352 | } |
| 353 | v8::String::Utf8Value str(args[i]); |
| 354 | const char* cstr = ToCString(str); |
| 355 | printf("%s", cstr); |
| 356 | } |
| 357 | printf("\n"); |
| 358 | fflush(stdout); |
| 359 | return v8::Undefined(); |
| 360 | } |
| 361 | |
| 362 | |
| 363 | // The callback that is invoked by v8 whenever the JavaScript 'read' |
| 364 | // function is called. This function loads the content of the file named in |
| 365 | // the argument into a JavaScript string. |
| 366 | v8::Handle<v8::Value> Read(const v8::Arguments& args) { |
| 367 | if (args.Length() != 1) { |
| 368 | return v8::ThrowException(v8::String::New("Bad parameters")); |
| 369 | } |
| 370 | v8::String::Utf8Value file(args[0]); |
| 371 | if (*file == NULL) { |
| 372 | return v8::ThrowException(v8::String::New("Error loading file")); |
| 373 | } |
| 374 | v8::Handle<v8::String> source = ReadFile(*file); |
| 375 | if (source.IsEmpty()) { |
| 376 | return v8::ThrowException(v8::String::New("Error loading file")); |
| 377 | } |
| 378 | return source; |
| 379 | } |
| 380 | |
| 381 | |
| 382 | // The callback that is invoked by v8 whenever the JavaScript 'load' |
| 383 | // function is called. Loads, compiles and executes its argument |
| 384 | // JavaScript file. |
| 385 | v8::Handle<v8::Value> Load(const v8::Arguments& args) { |
| 386 | for (int i = 0; i < args.Length(); i++) { |
| 387 | v8::HandleScope handle_scope; |
| 388 | v8::String::Utf8Value file(args[i]); |
| 389 | if (*file == NULL) { |
| 390 | return v8::ThrowException(v8::String::New("Error loading file")); |
| 391 | } |
| 392 | v8::Handle<v8::String> source = ReadFile(*file); |
| 393 | if (source.IsEmpty()) { |
| 394 | return v8::ThrowException(v8::String::New("Error loading file")); |
| 395 | } |
| 396 | if (!ExecuteString(source, v8::String::New(*file), false, false)) { |
| 397 | return v8::ThrowException(v8::String::New("Error executing file")); |
| 398 | } |
| 399 | } |
| 400 | return v8::Undefined(); |
| 401 | } |
| 402 | |
| 403 | |
| 404 | // The callback that is invoked by v8 whenever the JavaScript 'quit' |
| 405 | // function is called. Quits. |
| 406 | v8::Handle<v8::Value> Quit(const v8::Arguments& args) { |
| 407 | // If not arguments are given args[0] will yield undefined which |
| 408 | // converts to the integer value 0. |
| 409 | int exit_code = args[0]->Int32Value(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame^] | 410 | ExitShell(exit_code); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 411 | return v8::Undefined(); |
| 412 | } |
| 413 | |
| 414 | |
| 415 | v8::Handle<v8::Value> Version(const v8::Arguments& args) { |
| 416 | return v8::String::New(v8::V8::GetVersion()); |
| 417 | } |
| 418 | |
| 419 | |
| 420 | // Reads a file into a v8 string. |
| 421 | v8::Handle<v8::String> ReadFile(const char* name) { |
| 422 | FILE* file = fopen(name, "rb"); |
| 423 | if (file == NULL) return v8::Handle<v8::String>(); |
| 424 | |
| 425 | fseek(file, 0, SEEK_END); |
| 426 | int size = ftell(file); |
| 427 | rewind(file); |
| 428 | |
| 429 | char* chars = new char[size + 1]; |
| 430 | chars[size] = '\0'; |
| 431 | for (int i = 0; i < size;) { |
| 432 | int read = fread(&chars[i], 1, size - i, file); |
| 433 | i += read; |
| 434 | } |
| 435 | fclose(file); |
| 436 | v8::Handle<v8::String> result = v8::String::New(chars, size); |
| 437 | delete[] chars; |
| 438 | return result; |
| 439 | } |
| 440 | |
| 441 | |
| 442 | // The read-eval-execute loop of the shell. |
| 443 | void RunShell(v8::Handle<v8::Context> context) { |
| 444 | printf("V8 version %s\n", v8::V8::GetVersion()); |
| 445 | static const int kBufferSize = 256; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 446 | // Enter the execution environment before evaluating any code. |
| 447 | v8::Context::Scope context_scope(context); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 448 | while (true) { |
| 449 | char buffer[kBufferSize]; |
| 450 | printf("> "); |
| 451 | char* str = fgets(buffer, kBufferSize, stdin); |
| 452 | if (str == NULL) break; |
| 453 | v8::HandleScope handle_scope; |
| 454 | ExecuteString(v8::String::New(str), |
| 455 | v8::String::New("(shell)"), |
| 456 | true, |
| 457 | true); |
| 458 | } |
| 459 | printf("\n"); |
| 460 | } |
| 461 | |
| 462 | |
| 463 | // Executes a string within the current v8 context. |
| 464 | bool ExecuteString(v8::Handle<v8::String> source, |
| 465 | v8::Handle<v8::Value> name, |
| 466 | bool print_result, |
| 467 | bool report_exceptions) { |
| 468 | v8::HandleScope handle_scope; |
| 469 | v8::TryCatch try_catch; |
| 470 | v8::Handle<v8::Script> script = v8::Script::Compile(source, name); |
| 471 | if (script.IsEmpty()) { |
| 472 | // Print errors that happened during compilation. |
| 473 | if (report_exceptions) |
| 474 | ReportException(&try_catch); |
| 475 | return false; |
| 476 | } else { |
| 477 | v8::Handle<v8::Value> result = script->Run(); |
| 478 | if (result.IsEmpty()) { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 479 | assert(try_catch.HasCaught()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 480 | // Print errors that happened during execution. |
| 481 | if (report_exceptions) |
| 482 | ReportException(&try_catch); |
| 483 | return false; |
| 484 | } else { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 485 | assert(!try_catch.HasCaught()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 486 | if (print_result && !result->IsUndefined()) { |
| 487 | // If all went well and the result wasn't undefined then print |
| 488 | // the returned value. |
| 489 | v8::String::Utf8Value str(result); |
| 490 | const char* cstr = ToCString(str); |
| 491 | printf("%s\n", cstr); |
| 492 | } |
| 493 | return true; |
| 494 | } |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | |
| 499 | void ReportException(v8::TryCatch* try_catch) { |
| 500 | v8::HandleScope handle_scope; |
| 501 | v8::String::Utf8Value exception(try_catch->Exception()); |
| 502 | const char* exception_string = ToCString(exception); |
| 503 | v8::Handle<v8::Message> message = try_catch->Message(); |
| 504 | if (message.IsEmpty()) { |
| 505 | // V8 didn't provide any extra information about this error; just |
| 506 | // print the exception. |
| 507 | printf("%s\n", exception_string); |
| 508 | } else { |
| 509 | // Print (filename):(line number): (message). |
| 510 | v8::String::Utf8Value filename(message->GetScriptResourceName()); |
| 511 | const char* filename_string = ToCString(filename); |
| 512 | int linenum = message->GetLineNumber(); |
| 513 | printf("%s:%i: %s\n", filename_string, linenum, exception_string); |
| 514 | // Print line of source code. |
| 515 | v8::String::Utf8Value sourceline(message->GetSourceLine()); |
| 516 | const char* sourceline_string = ToCString(sourceline); |
| 517 | printf("%s\n", sourceline_string); |
| 518 | // Print wavy underline (GetUnderline is deprecated). |
| 519 | int start = message->GetStartColumn(); |
| 520 | for (int i = 0; i < start; i++) { |
| 521 | printf(" "); |
| 522 | } |
| 523 | int end = message->GetEndColumn(); |
| 524 | for (int i = start; i < end; i++) { |
| 525 | printf("^"); |
| 526 | } |
| 527 | printf("\n"); |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 528 | v8::String::Utf8Value stack_trace(try_catch->StackTrace()); |
| 529 | if (stack_trace.length() > 0) { |
| 530 | const char* stack_trace_string = ToCString(stack_trace); |
| 531 | printf("%s\n", stack_trace_string); |
| 532 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 533 | } |
| 534 | } |