Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 5 | #include "src/runtime/runtime-utils.h" |
| 6 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 7 | #include "src/arguments.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 8 | #include "src/debug/debug-evaluate.h" |
| 9 | #include "src/debug/debug-frames.h" |
| 10 | #include "src/debug/debug-scopes.h" |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 11 | #include "src/debug/debug.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 12 | #include "src/frames-inl.h" |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 13 | #include "src/interpreter/bytecodes.h" |
| 14 | #include "src/interpreter/interpreter.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 15 | #include "src/isolate-inl.h" |
| 16 | #include "src/runtime/runtime.h" |
| 17 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 18 | namespace v8 { |
| 19 | namespace internal { |
| 20 | |
| 21 | RUNTIME_FUNCTION(Runtime_DebugBreak) { |
| 22 | SealHandleScope shs(isolate); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 23 | DCHECK(args.length() == 1); |
| 24 | CONVERT_ARG_HANDLE_CHECKED(Object, value, 0); |
| 25 | isolate->debug()->set_return_value(value); |
| 26 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 27 | // Get the top-most JavaScript frame. |
| 28 | JavaScriptFrameIterator it(isolate); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 29 | isolate->debug()->Break(it.frame()); |
| 30 | |
| 31 | isolate->debug()->SetAfterBreakTarget(it.frame()); |
| 32 | return *isolate->debug()->return_value(); |
| 33 | } |
| 34 | |
| 35 | RUNTIME_FUNCTION(Runtime_DebugBreakOnBytecode) { |
| 36 | SealHandleScope shs(isolate); |
| 37 | DCHECK(args.length() == 1); |
| 38 | CONVERT_ARG_HANDLE_CHECKED(Object, value, 0); |
| 39 | isolate->debug()->set_return_value(value); |
| 40 | |
| 41 | // Get the top-most JavaScript frame. |
| 42 | JavaScriptFrameIterator it(isolate); |
| 43 | isolate->debug()->Break(it.frame()); |
| 44 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 45 | // If live-edit has dropped frames, we are not going back to dispatch. |
| 46 | if (LiveEdit::SetAfterBreakTarget(isolate->debug())) return Smi::FromInt(0); |
| 47 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 48 | // Return the handler from the original bytecode array. |
| 49 | DCHECK(it.frame()->is_interpreted()); |
| 50 | InterpretedFrame* interpreted_frame = |
| 51 | reinterpret_cast<InterpretedFrame*>(it.frame()); |
| 52 | SharedFunctionInfo* shared = interpreted_frame->function()->shared(); |
| 53 | BytecodeArray* bytecode_array = shared->bytecode_array(); |
| 54 | int bytecode_offset = interpreted_frame->GetBytecodeOffset(); |
| 55 | interpreter::Bytecode bytecode = |
| 56 | interpreter::Bytecodes::FromByte(bytecode_array->get(bytecode_offset)); |
| 57 | return isolate->interpreter()->GetBytecodeHandler( |
| 58 | bytecode, interpreter::OperandScale::kSingle); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 62 | RUNTIME_FUNCTION(Runtime_HandleDebuggerStatement) { |
| 63 | SealHandleScope shs(isolate); |
| 64 | DCHECK(args.length() == 0); |
| 65 | if (isolate->debug()->break_points_active()) { |
| 66 | isolate->debug()->HandleDebugBreak(); |
| 67 | } |
| 68 | return isolate->heap()->undefined_value(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 69 | } |
| 70 | |
| 71 | |
| 72 | // Adds a JavaScript function as a debug event listener. |
| 73 | // args[0]: debug event listener function to set or null or undefined for |
| 74 | // clearing the event listener function |
| 75 | // args[1]: object supplied during callback |
| 76 | RUNTIME_FUNCTION(Runtime_SetDebugEventListener) { |
| 77 | SealHandleScope shs(isolate); |
| 78 | DCHECK(args.length() == 2); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 79 | RUNTIME_ASSERT(args[0]->IsJSFunction() || args[0]->IsUndefined(isolate) || |
| 80 | args[0]->IsNull(isolate)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 81 | CONVERT_ARG_HANDLE_CHECKED(Object, callback, 0); |
| 82 | CONVERT_ARG_HANDLE_CHECKED(Object, data, 1); |
| 83 | isolate->debug()->SetEventListener(callback, data); |
| 84 | |
| 85 | return isolate->heap()->undefined_value(); |
| 86 | } |
| 87 | |
| 88 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 89 | RUNTIME_FUNCTION(Runtime_ScheduleBreak) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 90 | SealHandleScope shs(isolate); |
| 91 | DCHECK(args.length() == 0); |
| 92 | isolate->stack_guard()->RequestDebugBreak(); |
| 93 | return isolate->heap()->undefined_value(); |
| 94 | } |
| 95 | |
| 96 | |
| 97 | static Handle<Object> DebugGetProperty(LookupIterator* it, |
| 98 | bool* has_caught = NULL) { |
| 99 | for (; it->IsFound(); it->Next()) { |
| 100 | switch (it->state()) { |
| 101 | case LookupIterator::NOT_FOUND: |
| 102 | case LookupIterator::TRANSITION: |
| 103 | UNREACHABLE(); |
| 104 | case LookupIterator::ACCESS_CHECK: |
| 105 | // Ignore access checks. |
| 106 | break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 107 | case LookupIterator::INTEGER_INDEXED_EXOTIC: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 108 | case LookupIterator::INTERCEPTOR: |
| 109 | case LookupIterator::JSPROXY: |
| 110 | return it->isolate()->factory()->undefined_value(); |
| 111 | case LookupIterator::ACCESSOR: { |
| 112 | Handle<Object> accessors = it->GetAccessors(); |
| 113 | if (!accessors->IsAccessorInfo()) { |
| 114 | return it->isolate()->factory()->undefined_value(); |
| 115 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 116 | MaybeHandle<Object> maybe_result = |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 117 | JSObject::GetPropertyWithAccessor(it); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 118 | Handle<Object> result; |
| 119 | if (!maybe_result.ToHandle(&result)) { |
| 120 | result = handle(it->isolate()->pending_exception(), it->isolate()); |
| 121 | it->isolate()->clear_pending_exception(); |
| 122 | if (has_caught != NULL) *has_caught = true; |
| 123 | } |
| 124 | return result; |
| 125 | } |
| 126 | |
| 127 | case LookupIterator::DATA: |
| 128 | return it->GetDataValue(); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | return it->isolate()->factory()->undefined_value(); |
| 133 | } |
| 134 | |
| 135 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 136 | static Handle<Object> DebugGetProperty(Handle<Object> object, |
| 137 | Handle<Name> name) { |
| 138 | LookupIterator it(object, name); |
| 139 | return DebugGetProperty(&it); |
| 140 | } |
| 141 | |
| 142 | |
| 143 | template <class IteratorType> |
| 144 | static MaybeHandle<JSArray> GetIteratorInternalProperties( |
| 145 | Isolate* isolate, Handle<IteratorType> object) { |
| 146 | Factory* factory = isolate->factory(); |
| 147 | Handle<IteratorType> iterator = Handle<IteratorType>::cast(object); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 148 | CHECK(iterator->kind()->IsSmi()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 149 | const char* kind = NULL; |
| 150 | switch (Smi::cast(iterator->kind())->value()) { |
| 151 | case IteratorType::kKindKeys: |
| 152 | kind = "keys"; |
| 153 | break; |
| 154 | case IteratorType::kKindValues: |
| 155 | kind = "values"; |
| 156 | break; |
| 157 | case IteratorType::kKindEntries: |
| 158 | kind = "entries"; |
| 159 | break; |
| 160 | default: |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 161 | UNREACHABLE(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | Handle<FixedArray> result = factory->NewFixedArray(2 * 3); |
| 165 | Handle<String> has_more = |
| 166 | factory->NewStringFromAsciiChecked("[[IteratorHasMore]]"); |
| 167 | result->set(0, *has_more); |
| 168 | result->set(1, isolate->heap()->ToBoolean(iterator->HasMore())); |
| 169 | |
| 170 | Handle<String> index = |
| 171 | factory->NewStringFromAsciiChecked("[[IteratorIndex]]"); |
| 172 | result->set(2, *index); |
| 173 | result->set(3, iterator->index()); |
| 174 | |
| 175 | Handle<String> iterator_kind = |
| 176 | factory->NewStringFromAsciiChecked("[[IteratorKind]]"); |
| 177 | result->set(4, *iterator_kind); |
| 178 | Handle<String> kind_str = factory->NewStringFromAsciiChecked(kind); |
| 179 | result->set(5, *kind_str); |
| 180 | return factory->NewJSArrayWithElements(result); |
| 181 | } |
| 182 | |
| 183 | |
| 184 | MaybeHandle<JSArray> Runtime::GetInternalProperties(Isolate* isolate, |
| 185 | Handle<Object> object) { |
| 186 | Factory* factory = isolate->factory(); |
| 187 | if (object->IsJSBoundFunction()) { |
| 188 | Handle<JSBoundFunction> function = Handle<JSBoundFunction>::cast(object); |
| 189 | |
| 190 | Handle<FixedArray> result = factory->NewFixedArray(2 * 3); |
| 191 | Handle<String> target = |
| 192 | factory->NewStringFromAsciiChecked("[[TargetFunction]]"); |
| 193 | result->set(0, *target); |
| 194 | result->set(1, function->bound_target_function()); |
| 195 | |
| 196 | Handle<String> bound_this = |
| 197 | factory->NewStringFromAsciiChecked("[[BoundThis]]"); |
| 198 | result->set(2, *bound_this); |
| 199 | result->set(3, function->bound_this()); |
| 200 | |
| 201 | Handle<String> bound_args = |
| 202 | factory->NewStringFromAsciiChecked("[[BoundArgs]]"); |
| 203 | result->set(4, *bound_args); |
| 204 | Handle<FixedArray> bound_arguments = |
| 205 | factory->CopyFixedArray(handle(function->bound_arguments(), isolate)); |
| 206 | Handle<JSArray> arguments_array = |
| 207 | factory->NewJSArrayWithElements(bound_arguments); |
| 208 | result->set(5, *arguments_array); |
| 209 | return factory->NewJSArrayWithElements(result); |
| 210 | } else if (object->IsJSMapIterator()) { |
| 211 | Handle<JSMapIterator> iterator = Handle<JSMapIterator>::cast(object); |
| 212 | return GetIteratorInternalProperties(isolate, iterator); |
| 213 | } else if (object->IsJSSetIterator()) { |
| 214 | Handle<JSSetIterator> iterator = Handle<JSSetIterator>::cast(object); |
| 215 | return GetIteratorInternalProperties(isolate, iterator); |
| 216 | } else if (object->IsJSGeneratorObject()) { |
| 217 | Handle<JSGeneratorObject> generator = |
| 218 | Handle<JSGeneratorObject>::cast(object); |
| 219 | |
| 220 | const char* status = "suspended"; |
| 221 | if (generator->is_closed()) { |
| 222 | status = "closed"; |
| 223 | } else if (generator->is_executing()) { |
| 224 | status = "running"; |
| 225 | } else { |
| 226 | DCHECK(generator->is_suspended()); |
| 227 | } |
| 228 | |
| 229 | Handle<FixedArray> result = factory->NewFixedArray(2 * 3); |
| 230 | Handle<String> generator_status = |
| 231 | factory->NewStringFromAsciiChecked("[[GeneratorStatus]]"); |
| 232 | result->set(0, *generator_status); |
| 233 | Handle<String> status_str = factory->NewStringFromAsciiChecked(status); |
| 234 | result->set(1, *status_str); |
| 235 | |
| 236 | Handle<String> function = |
| 237 | factory->NewStringFromAsciiChecked("[[GeneratorFunction]]"); |
| 238 | result->set(2, *function); |
| 239 | result->set(3, generator->function()); |
| 240 | |
| 241 | Handle<String> receiver = |
| 242 | factory->NewStringFromAsciiChecked("[[GeneratorReceiver]]"); |
| 243 | result->set(4, *receiver); |
| 244 | result->set(5, generator->receiver()); |
| 245 | return factory->NewJSArrayWithElements(result); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 246 | } else if (object->IsJSPromise()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 247 | Handle<JSObject> promise = Handle<JSObject>::cast(object); |
| 248 | |
| 249 | Handle<Object> status_obj = |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 250 | DebugGetProperty(promise, isolate->factory()->promise_state_symbol()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 251 | CHECK(status_obj->IsSmi()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 252 | const char* status = "rejected"; |
| 253 | int status_val = Handle<Smi>::cast(status_obj)->value(); |
| 254 | switch (status_val) { |
| 255 | case +1: |
| 256 | status = "resolved"; |
| 257 | break; |
| 258 | case 0: |
| 259 | status = "pending"; |
| 260 | break; |
| 261 | default: |
| 262 | DCHECK_EQ(-1, status_val); |
| 263 | } |
| 264 | |
| 265 | Handle<FixedArray> result = factory->NewFixedArray(2 * 2); |
| 266 | Handle<String> promise_status = |
| 267 | factory->NewStringFromAsciiChecked("[[PromiseStatus]]"); |
| 268 | result->set(0, *promise_status); |
| 269 | Handle<String> status_str = factory->NewStringFromAsciiChecked(status); |
| 270 | result->set(1, *status_str); |
| 271 | |
| 272 | Handle<Object> value_obj = |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 273 | DebugGetProperty(promise, isolate->factory()->promise_result_symbol()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 274 | Handle<String> promise_value = |
| 275 | factory->NewStringFromAsciiChecked("[[PromiseValue]]"); |
| 276 | result->set(2, *promise_value); |
| 277 | result->set(3, *value_obj); |
| 278 | return factory->NewJSArrayWithElements(result); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 279 | } else if (object->IsJSProxy()) { |
| 280 | Handle<JSProxy> js_proxy = Handle<JSProxy>::cast(object); |
| 281 | Handle<FixedArray> result = factory->NewFixedArray(3 * 2); |
| 282 | |
| 283 | Handle<String> handler_str = |
| 284 | factory->NewStringFromAsciiChecked("[[Handler]]"); |
| 285 | result->set(0, *handler_str); |
| 286 | result->set(1, js_proxy->handler()); |
| 287 | |
| 288 | Handle<String> target_str = |
| 289 | factory->NewStringFromAsciiChecked("[[Target]]"); |
| 290 | result->set(2, *target_str); |
| 291 | result->set(3, js_proxy->target()); |
| 292 | |
| 293 | Handle<String> is_revoked_str = |
| 294 | factory->NewStringFromAsciiChecked("[[IsRevoked]]"); |
| 295 | result->set(4, *is_revoked_str); |
| 296 | result->set(5, isolate->heap()->ToBoolean(js_proxy->IsRevoked())); |
| 297 | return factory->NewJSArrayWithElements(result); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 298 | } else if (object->IsJSValue()) { |
| 299 | Handle<JSValue> js_value = Handle<JSValue>::cast(object); |
| 300 | |
| 301 | Handle<FixedArray> result = factory->NewFixedArray(2); |
| 302 | Handle<String> primitive_value = |
| 303 | factory->NewStringFromAsciiChecked("[[PrimitiveValue]]"); |
| 304 | result->set(0, *primitive_value); |
| 305 | result->set(1, js_value->value()); |
| 306 | return factory->NewJSArrayWithElements(result); |
| 307 | } |
| 308 | return factory->NewJSArray(0); |
| 309 | } |
| 310 | |
| 311 | |
| 312 | RUNTIME_FUNCTION(Runtime_DebugGetInternalProperties) { |
| 313 | HandleScope scope(isolate); |
| 314 | DCHECK(args.length() == 1); |
| 315 | CONVERT_ARG_HANDLE_CHECKED(Object, obj, 0); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 316 | RETURN_RESULT_OR_FAILURE(isolate, |
| 317 | Runtime::GetInternalProperties(isolate, obj)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 318 | } |
| 319 | |
| 320 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 321 | // Get debugger related details for an object property, in the following format: |
| 322 | // 0: Property value |
| 323 | // 1: Property details |
| 324 | // 2: Property value is exception |
| 325 | // 3: Getter function if defined |
| 326 | // 4: Setter function if defined |
| 327 | // Items 2-4 are only filled if the property has either a getter or a setter. |
| 328 | RUNTIME_FUNCTION(Runtime_DebugGetPropertyDetails) { |
| 329 | HandleScope scope(isolate); |
| 330 | |
| 331 | DCHECK(args.length() == 2); |
| 332 | |
| 333 | CONVERT_ARG_HANDLE_CHECKED(JSObject, obj, 0); |
| 334 | CONVERT_ARG_HANDLE_CHECKED(Name, name, 1); |
| 335 | |
| 336 | // Make sure to set the current context to the context before the debugger was |
| 337 | // entered (if the debugger is entered). The reason for switching context here |
| 338 | // is that for some property lookups (accessors and interceptors) callbacks |
| 339 | // into the embedding application can occour, and the embedding application |
| 340 | // could have the assumption that its own native context is the current |
| 341 | // context and not some internal debugger context. |
| 342 | SaveContext save(isolate); |
| 343 | if (isolate->debug()->in_debug_scope()) { |
| 344 | isolate->set_context(*isolate->debug()->debugger_entry()->GetContext()); |
| 345 | } |
| 346 | |
| 347 | // Check if the name is trivially convertible to an index and get the element |
| 348 | // if so. |
| 349 | uint32_t index; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 350 | // TODO(verwaest): Make sure DebugGetProperty can handle arrays, and remove |
| 351 | // this special case. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 352 | if (name->AsArrayIndex(&index)) { |
| 353 | Handle<FixedArray> details = isolate->factory()->NewFixedArray(2); |
| 354 | Handle<Object> element_or_char; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 355 | ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| 356 | isolate, element_or_char, JSReceiver::GetElement(isolate, obj, index)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 357 | details->set(0, *element_or_char); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 358 | details->set(1, PropertyDetails::Empty().AsSmi()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 359 | return *isolate->factory()->NewJSArrayWithElements(details); |
| 360 | } |
| 361 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 362 | LookupIterator it(obj, name, LookupIterator::OWN); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 363 | bool has_caught = false; |
| 364 | Handle<Object> value = DebugGetProperty(&it, &has_caught); |
| 365 | if (!it.IsFound()) return isolate->heap()->undefined_value(); |
| 366 | |
| 367 | Handle<Object> maybe_pair; |
| 368 | if (it.state() == LookupIterator::ACCESSOR) { |
| 369 | maybe_pair = it.GetAccessors(); |
| 370 | } |
| 371 | |
| 372 | // If the callback object is a fixed array then it contains JavaScript |
| 373 | // getter and/or setter. |
| 374 | bool has_js_accessors = !maybe_pair.is_null() && maybe_pair->IsAccessorPair(); |
| 375 | Handle<FixedArray> details = |
| 376 | isolate->factory()->NewFixedArray(has_js_accessors ? 6 : 3); |
| 377 | details->set(0, *value); |
| 378 | // TODO(verwaest): Get rid of this random way of handling interceptors. |
| 379 | PropertyDetails d = it.state() == LookupIterator::INTERCEPTOR |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 380 | ? PropertyDetails::Empty() |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 381 | : it.property_details(); |
| 382 | details->set(1, d.AsSmi()); |
| 383 | details->set( |
| 384 | 2, isolate->heap()->ToBoolean(it.state() == LookupIterator::INTERCEPTOR)); |
| 385 | if (has_js_accessors) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 386 | Handle<AccessorPair> accessors = Handle<AccessorPair>::cast(maybe_pair); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 387 | details->set(3, isolate->heap()->ToBoolean(has_caught)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 388 | Handle<Object> getter = |
| 389 | AccessorPair::GetComponent(accessors, ACCESSOR_GETTER); |
| 390 | Handle<Object> setter = |
| 391 | AccessorPair::GetComponent(accessors, ACCESSOR_SETTER); |
| 392 | details->set(4, *getter); |
| 393 | details->set(5, *setter); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 394 | } |
| 395 | |
| 396 | return *isolate->factory()->NewJSArrayWithElements(details); |
| 397 | } |
| 398 | |
| 399 | |
| 400 | RUNTIME_FUNCTION(Runtime_DebugGetProperty) { |
| 401 | HandleScope scope(isolate); |
| 402 | |
| 403 | DCHECK(args.length() == 2); |
| 404 | |
| 405 | CONVERT_ARG_HANDLE_CHECKED(JSObject, obj, 0); |
| 406 | CONVERT_ARG_HANDLE_CHECKED(Name, name, 1); |
| 407 | |
| 408 | LookupIterator it(obj, name); |
| 409 | return *DebugGetProperty(&it); |
| 410 | } |
| 411 | |
| 412 | |
| 413 | // Return the property type calculated from the property details. |
| 414 | // args[0]: smi with property details. |
| 415 | RUNTIME_FUNCTION(Runtime_DebugPropertyTypeFromDetails) { |
| 416 | SealHandleScope shs(isolate); |
| 417 | DCHECK(args.length() == 1); |
| 418 | CONVERT_PROPERTY_DETAILS_CHECKED(details, 0); |
| 419 | return Smi::FromInt(static_cast<int>(details.type())); |
| 420 | } |
| 421 | |
| 422 | |
| 423 | // Return the property attribute calculated from the property details. |
| 424 | // args[0]: smi with property details. |
| 425 | RUNTIME_FUNCTION(Runtime_DebugPropertyAttributesFromDetails) { |
| 426 | SealHandleScope shs(isolate); |
| 427 | DCHECK(args.length() == 1); |
| 428 | CONVERT_PROPERTY_DETAILS_CHECKED(details, 0); |
| 429 | return Smi::FromInt(static_cast<int>(details.attributes())); |
| 430 | } |
| 431 | |
| 432 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 433 | RUNTIME_FUNCTION(Runtime_CheckExecutionState) { |
| 434 | SealHandleScope shs(isolate); |
| 435 | DCHECK(args.length() == 1); |
| 436 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 437 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 438 | return isolate->heap()->true_value(); |
| 439 | } |
| 440 | |
| 441 | |
| 442 | RUNTIME_FUNCTION(Runtime_GetFrameCount) { |
| 443 | HandleScope scope(isolate); |
| 444 | DCHECK(args.length() == 1); |
| 445 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 446 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 447 | |
| 448 | // Count all frames which are relevant to debugging stack trace. |
| 449 | int n = 0; |
| 450 | StackFrame::Id id = isolate->debug()->break_frame_id(); |
| 451 | if (id == StackFrame::NO_ID) { |
| 452 | // If there is no JavaScript stack frame count is 0. |
| 453 | return Smi::FromInt(0); |
| 454 | } |
| 455 | |
| 456 | for (JavaScriptFrameIterator it(isolate, id); !it.done(); it.Advance()) { |
| 457 | List<FrameSummary> frames(FLAG_max_inlining_levels + 1); |
| 458 | it.frame()->Summarize(&frames); |
| 459 | for (int i = frames.length() - 1; i >= 0; i--) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 460 | // Omit functions from native and extension scripts. |
| 461 | if (frames[i].function()->shared()->IsSubjectToDebugging()) n++; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 462 | } |
| 463 | } |
| 464 | return Smi::FromInt(n); |
| 465 | } |
| 466 | |
| 467 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 468 | static const int kFrameDetailsFrameIdIndex = 0; |
| 469 | static const int kFrameDetailsReceiverIndex = 1; |
| 470 | static const int kFrameDetailsFunctionIndex = 2; |
| 471 | static const int kFrameDetailsArgumentCountIndex = 3; |
| 472 | static const int kFrameDetailsLocalCountIndex = 4; |
| 473 | static const int kFrameDetailsSourcePositionIndex = 5; |
| 474 | static const int kFrameDetailsConstructCallIndex = 6; |
| 475 | static const int kFrameDetailsAtReturnIndex = 7; |
| 476 | static const int kFrameDetailsFlagsIndex = 8; |
| 477 | static const int kFrameDetailsFirstDynamicIndex = 9; |
| 478 | |
| 479 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 480 | // Return an array with frame details |
| 481 | // args[0]: number: break id |
| 482 | // args[1]: number: frame index |
| 483 | // |
| 484 | // The array returned contains the following information: |
| 485 | // 0: Frame id |
| 486 | // 1: Receiver |
| 487 | // 2: Function |
| 488 | // 3: Argument count |
| 489 | // 4: Local count |
| 490 | // 5: Source position |
| 491 | // 6: Constructor call |
| 492 | // 7: Is at return |
| 493 | // 8: Flags |
| 494 | // Arguments name, value |
| 495 | // Locals name, value |
| 496 | // Return value if any |
| 497 | RUNTIME_FUNCTION(Runtime_GetFrameDetails) { |
| 498 | HandleScope scope(isolate); |
| 499 | DCHECK(args.length() == 2); |
| 500 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 501 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 502 | |
| 503 | CONVERT_NUMBER_CHECKED(int, index, Int32, args[1]); |
| 504 | Heap* heap = isolate->heap(); |
| 505 | |
| 506 | // Find the relevant frame with the requested index. |
| 507 | StackFrame::Id id = isolate->debug()->break_frame_id(); |
| 508 | if (id == StackFrame::NO_ID) { |
| 509 | // If there are no JavaScript stack frames return undefined. |
| 510 | return heap->undefined_value(); |
| 511 | } |
| 512 | |
| 513 | JavaScriptFrameIterator it(isolate, id); |
| 514 | // Inlined frame index in optimized frame, starting from outer function. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 515 | int inlined_jsframe_index = |
| 516 | DebugFrameHelper::FindIndexedNonNativeFrame(&it, index); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 517 | if (inlined_jsframe_index == -1) return heap->undefined_value(); |
| 518 | |
| 519 | FrameInspector frame_inspector(it.frame(), inlined_jsframe_index, isolate); |
| 520 | bool is_optimized = it.frame()->is_optimized(); |
| 521 | |
| 522 | // Traverse the saved contexts chain to find the active context for the |
| 523 | // selected frame. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 524 | SaveContext* save = |
| 525 | DebugFrameHelper::FindSavedContextForFrame(isolate, it.frame()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 526 | |
| 527 | // Get the frame id. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 528 | Handle<Object> frame_id(DebugFrameHelper::WrapFrameId(it.frame()->id()), |
| 529 | isolate); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 530 | |
| 531 | // Find source position in unoptimized code. |
| 532 | int position = frame_inspector.GetSourcePosition(); |
| 533 | |
| 534 | // Check for constructor frame. |
| 535 | bool constructor = frame_inspector.IsConstructor(); |
| 536 | |
| 537 | // Get scope info and read from it for local variable information. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 538 | Handle<JSFunction> function = |
| 539 | Handle<JSFunction>::cast(frame_inspector.GetFunction()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 540 | RUNTIME_ASSERT(function->shared()->IsSubjectToDebugging()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 541 | Handle<SharedFunctionInfo> shared(function->shared()); |
| 542 | Handle<ScopeInfo> scope_info(shared->scope_info()); |
| 543 | DCHECK(*scope_info != ScopeInfo::Empty(isolate)); |
| 544 | |
| 545 | // Get the locals names and values into a temporary array. |
| 546 | int local_count = scope_info->LocalCount(); |
| 547 | for (int slot = 0; slot < scope_info->LocalCount(); ++slot) { |
| 548 | // Hide compiler-introduced temporary variables, whether on the stack or on |
| 549 | // the context. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 550 | if (ScopeInfo::VariableIsSynthetic(scope_info->LocalName(slot))) { |
| 551 | local_count--; |
| 552 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 553 | } |
| 554 | |
| 555 | Handle<FixedArray> locals = |
| 556 | isolate->factory()->NewFixedArray(local_count * 2); |
| 557 | |
| 558 | // Fill in the values of the locals. |
| 559 | int local = 0; |
| 560 | int i = 0; |
| 561 | for (; i < scope_info->StackLocalCount(); ++i) { |
| 562 | // Use the value from the stack. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 563 | if (ScopeInfo::VariableIsSynthetic(scope_info->LocalName(i))) continue; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 564 | locals->set(local * 2, scope_info->LocalName(i)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 565 | Handle<Object> value = |
| 566 | frame_inspector.GetExpression(scope_info->StackLocalIndex(i)); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 567 | // TODO(yangguo): We convert optimized out values to {undefined} when they |
| 568 | // are passed to the debugger. Eventually we should handle them somehow. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 569 | if (value->IsOptimizedOut(isolate)) { |
| 570 | value = isolate->factory()->undefined_value(); |
| 571 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 572 | locals->set(local * 2 + 1, *value); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 573 | local++; |
| 574 | } |
| 575 | if (local < local_count) { |
| 576 | // Get the context containing declarations. |
| 577 | Handle<Context> context( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 578 | Handle<Context>::cast(frame_inspector.GetContext())->closure_context()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 579 | for (; i < scope_info->LocalCount(); ++i) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 580 | Handle<String> name(scope_info->LocalName(i)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 581 | if (ScopeInfo::VariableIsSynthetic(*name)) continue; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 582 | VariableMode mode; |
| 583 | InitializationFlag init_flag; |
| 584 | MaybeAssignedFlag maybe_assigned_flag; |
| 585 | locals->set(local * 2, *name); |
| 586 | int context_slot_index = ScopeInfo::ContextSlotIndex( |
| 587 | scope_info, name, &mode, &init_flag, &maybe_assigned_flag); |
| 588 | Object* value = context->get(context_slot_index); |
| 589 | locals->set(local * 2 + 1, value); |
| 590 | local++; |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | // Check whether this frame is positioned at return. If not top |
| 595 | // frame or if the frame is optimized it cannot be at a return. |
| 596 | bool at_return = false; |
| 597 | if (!is_optimized && index == 0) { |
| 598 | at_return = isolate->debug()->IsBreakAtReturn(it.frame()); |
| 599 | } |
| 600 | |
| 601 | // If positioned just before return find the value to be returned and add it |
| 602 | // to the frame information. |
| 603 | Handle<Object> return_value = isolate->factory()->undefined_value(); |
| 604 | if (at_return) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 605 | return_value = isolate->debug()->return_value(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 606 | } |
| 607 | |
| 608 | // Now advance to the arguments adapter frame (if any). It contains all |
| 609 | // the provided parameters whereas the function frame always have the number |
| 610 | // of arguments matching the functions parameters. The rest of the |
| 611 | // information (except for what is collected above) is the same. |
| 612 | if ((inlined_jsframe_index == 0) && it.frame()->has_adapted_arguments()) { |
| 613 | it.AdvanceToArgumentsFrame(); |
| 614 | frame_inspector.SetArgumentsFrame(it.frame()); |
| 615 | } |
| 616 | |
| 617 | // Find the number of arguments to fill. At least fill the number of |
| 618 | // parameters for the function and fill more if more parameters are provided. |
| 619 | int argument_count = scope_info->ParameterCount(); |
| 620 | if (argument_count < frame_inspector.GetParametersCount()) { |
| 621 | argument_count = frame_inspector.GetParametersCount(); |
| 622 | } |
| 623 | |
| 624 | // Calculate the size of the result. |
| 625 | int details_size = kFrameDetailsFirstDynamicIndex + |
| 626 | 2 * (argument_count + local_count) + (at_return ? 1 : 0); |
| 627 | Handle<FixedArray> details = isolate->factory()->NewFixedArray(details_size); |
| 628 | |
| 629 | // Add the frame id. |
| 630 | details->set(kFrameDetailsFrameIdIndex, *frame_id); |
| 631 | |
| 632 | // Add the function (same as in function frame). |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 633 | details->set(kFrameDetailsFunctionIndex, *(frame_inspector.GetFunction())); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 634 | |
| 635 | // Add the arguments count. |
| 636 | details->set(kFrameDetailsArgumentCountIndex, Smi::FromInt(argument_count)); |
| 637 | |
| 638 | // Add the locals count |
| 639 | details->set(kFrameDetailsLocalCountIndex, Smi::FromInt(local_count)); |
| 640 | |
| 641 | // Add the source position. |
| 642 | if (position != RelocInfo::kNoPosition) { |
| 643 | details->set(kFrameDetailsSourcePositionIndex, Smi::FromInt(position)); |
| 644 | } else { |
| 645 | details->set(kFrameDetailsSourcePositionIndex, heap->undefined_value()); |
| 646 | } |
| 647 | |
| 648 | // Add the constructor information. |
| 649 | details->set(kFrameDetailsConstructCallIndex, heap->ToBoolean(constructor)); |
| 650 | |
| 651 | // Add the at return information. |
| 652 | details->set(kFrameDetailsAtReturnIndex, heap->ToBoolean(at_return)); |
| 653 | |
| 654 | // Add flags to indicate information on whether this frame is |
| 655 | // bit 0: invoked in the debugger context. |
| 656 | // bit 1: optimized frame. |
| 657 | // bit 2: inlined in optimized frame |
| 658 | int flags = 0; |
| 659 | if (*save->context() == *isolate->debug()->debug_context()) { |
| 660 | flags |= 1 << 0; |
| 661 | } |
| 662 | if (is_optimized) { |
| 663 | flags |= 1 << 1; |
| 664 | flags |= inlined_jsframe_index << 2; |
| 665 | } |
| 666 | details->set(kFrameDetailsFlagsIndex, Smi::FromInt(flags)); |
| 667 | |
| 668 | // Fill the dynamic part. |
| 669 | int details_index = kFrameDetailsFirstDynamicIndex; |
| 670 | |
| 671 | // Add arguments name and value. |
| 672 | for (int i = 0; i < argument_count; i++) { |
| 673 | // Name of the argument. |
| 674 | if (i < scope_info->ParameterCount()) { |
| 675 | details->set(details_index++, scope_info->ParameterName(i)); |
| 676 | } else { |
| 677 | details->set(details_index++, heap->undefined_value()); |
| 678 | } |
| 679 | |
| 680 | // Parameter value. |
| 681 | if (i < frame_inspector.GetParametersCount()) { |
| 682 | // Get the value from the stack. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 683 | details->set(details_index++, *(frame_inspector.GetParameter(i))); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 684 | } else { |
| 685 | details->set(details_index++, heap->undefined_value()); |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | // Add locals name and value from the temporary copy from the function frame. |
| 690 | for (int i = 0; i < local_count * 2; i++) { |
| 691 | details->set(details_index++, locals->get(i)); |
| 692 | } |
| 693 | |
| 694 | // Add the value being returned. |
| 695 | if (at_return) { |
| 696 | details->set(details_index++, *return_value); |
| 697 | } |
| 698 | |
| 699 | // Add the receiver (same as in function frame). |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 700 | Handle<Object> receiver(it.frame()->receiver(), isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 701 | DCHECK(!function->shared()->IsBuiltin()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 702 | DCHECK_IMPLIES(is_sloppy(shared->language_mode()), receiver->IsJSReceiver()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 703 | details->set(kFrameDetailsReceiverIndex, *receiver); |
| 704 | |
| 705 | DCHECK_EQ(details_size, details_index); |
| 706 | return *isolate->factory()->NewJSArrayWithElements(details); |
| 707 | } |
| 708 | |
| 709 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 710 | RUNTIME_FUNCTION(Runtime_GetScopeCount) { |
| 711 | HandleScope scope(isolate); |
| 712 | DCHECK(args.length() == 2); |
| 713 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 714 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 715 | |
| 716 | CONVERT_SMI_ARG_CHECKED(wrapped_id, 1); |
| 717 | |
| 718 | // Get the frame where the debugging is performed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 719 | StackFrame::Id id = DebugFrameHelper::UnwrapFrameId(wrapped_id); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 720 | JavaScriptFrameIterator it(isolate, id); |
| 721 | JavaScriptFrame* frame = it.frame(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 722 | FrameInspector frame_inspector(frame, 0, isolate); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 723 | |
| 724 | // Count the visible scopes. |
| 725 | int n = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 726 | for (ScopeIterator it(isolate, &frame_inspector); !it.Done(); it.Next()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 727 | n++; |
| 728 | } |
| 729 | |
| 730 | return Smi::FromInt(n); |
| 731 | } |
| 732 | |
| 733 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 734 | // Return an array with scope details |
| 735 | // args[0]: number: break id |
| 736 | // args[1]: number: frame index |
| 737 | // args[2]: number: inlined frame index |
| 738 | // args[3]: number: scope index |
| 739 | // |
| 740 | // The array returned contains the following information: |
| 741 | // 0: Scope type |
| 742 | // 1: Scope object |
| 743 | RUNTIME_FUNCTION(Runtime_GetScopeDetails) { |
| 744 | HandleScope scope(isolate); |
| 745 | DCHECK(args.length() == 4); |
| 746 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 747 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 748 | |
| 749 | CONVERT_SMI_ARG_CHECKED(wrapped_id, 1); |
| 750 | CONVERT_NUMBER_CHECKED(int, inlined_jsframe_index, Int32, args[2]); |
| 751 | CONVERT_NUMBER_CHECKED(int, index, Int32, args[3]); |
| 752 | |
| 753 | // Get the frame where the debugging is performed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 754 | StackFrame::Id id = DebugFrameHelper::UnwrapFrameId(wrapped_id); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 755 | JavaScriptFrameIterator frame_it(isolate, id); |
| 756 | JavaScriptFrame* frame = frame_it.frame(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 757 | FrameInspector frame_inspector(frame, inlined_jsframe_index, isolate); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 758 | |
| 759 | // Find the requested scope. |
| 760 | int n = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 761 | ScopeIterator it(isolate, &frame_inspector); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 762 | for (; !it.Done() && n < index; it.Next()) { |
| 763 | n++; |
| 764 | } |
| 765 | if (it.Done()) { |
| 766 | return isolate->heap()->undefined_value(); |
| 767 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 768 | RETURN_RESULT_OR_FAILURE(isolate, it.MaterializeScopeDetails()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 769 | } |
| 770 | |
| 771 | |
| 772 | // Return an array of scope details |
| 773 | // args[0]: number: break id |
| 774 | // args[1]: number: frame index |
| 775 | // args[2]: number: inlined frame index |
| 776 | // args[3]: boolean: ignore nested scopes |
| 777 | // |
| 778 | // The array returned contains arrays with the following information: |
| 779 | // 0: Scope type |
| 780 | // 1: Scope object |
| 781 | RUNTIME_FUNCTION(Runtime_GetAllScopesDetails) { |
| 782 | HandleScope scope(isolate); |
| 783 | DCHECK(args.length() == 3 || args.length() == 4); |
| 784 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 785 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 786 | |
| 787 | CONVERT_SMI_ARG_CHECKED(wrapped_id, 1); |
| 788 | CONVERT_NUMBER_CHECKED(int, inlined_jsframe_index, Int32, args[2]); |
| 789 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 790 | ScopeIterator::Option option = ScopeIterator::DEFAULT; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 791 | if (args.length() == 4) { |
| 792 | CONVERT_BOOLEAN_ARG_CHECKED(flag, 3); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 793 | if (flag) option = ScopeIterator::IGNORE_NESTED_SCOPES; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 794 | } |
| 795 | |
| 796 | // Get the frame where the debugging is performed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 797 | StackFrame::Id id = DebugFrameHelper::UnwrapFrameId(wrapped_id); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 798 | JavaScriptFrameIterator frame_it(isolate, id); |
| 799 | JavaScriptFrame* frame = frame_it.frame(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 800 | FrameInspector frame_inspector(frame, inlined_jsframe_index, isolate); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 801 | |
| 802 | List<Handle<JSObject> > result(4); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 803 | ScopeIterator it(isolate, &frame_inspector, option); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 804 | for (; !it.Done(); it.Next()) { |
| 805 | Handle<JSObject> details; |
| 806 | ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, details, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 807 | it.MaterializeScopeDetails()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 808 | result.Add(details); |
| 809 | } |
| 810 | |
| 811 | Handle<FixedArray> array = isolate->factory()->NewFixedArray(result.length()); |
| 812 | for (int i = 0; i < result.length(); ++i) { |
| 813 | array->set(i, *result[i]); |
| 814 | } |
| 815 | return *isolate->factory()->NewJSArrayWithElements(array); |
| 816 | } |
| 817 | |
| 818 | |
| 819 | RUNTIME_FUNCTION(Runtime_GetFunctionScopeCount) { |
| 820 | HandleScope scope(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 821 | DCHECK_EQ(1, args.length()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 822 | |
| 823 | // Check arguments. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 824 | CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 825 | |
| 826 | // Count the visible scopes. |
| 827 | int n = 0; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 828 | if (function->IsJSFunction()) { |
| 829 | for (ScopeIterator it(isolate, Handle<JSFunction>::cast(function)); |
| 830 | !it.Done(); it.Next()) { |
| 831 | n++; |
| 832 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | return Smi::FromInt(n); |
| 836 | } |
| 837 | |
| 838 | |
| 839 | RUNTIME_FUNCTION(Runtime_GetFunctionScopeDetails) { |
| 840 | HandleScope scope(isolate); |
| 841 | DCHECK(args.length() == 2); |
| 842 | |
| 843 | // Check arguments. |
| 844 | CONVERT_ARG_HANDLE_CHECKED(JSFunction, fun, 0); |
| 845 | CONVERT_NUMBER_CHECKED(int, index, Int32, args[1]); |
| 846 | |
| 847 | // Find the requested scope. |
| 848 | int n = 0; |
| 849 | ScopeIterator it(isolate, fun); |
| 850 | for (; !it.Done() && n < index; it.Next()) { |
| 851 | n++; |
| 852 | } |
| 853 | if (it.Done()) { |
| 854 | return isolate->heap()->undefined_value(); |
| 855 | } |
| 856 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 857 | RETURN_RESULT_OR_FAILURE(isolate, it.MaterializeScopeDetails()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 858 | } |
| 859 | |
| 860 | |
| 861 | static bool SetScopeVariableValue(ScopeIterator* it, int index, |
| 862 | Handle<String> variable_name, |
| 863 | Handle<Object> new_value) { |
| 864 | for (int n = 0; !it->Done() && n < index; it->Next()) { |
| 865 | n++; |
| 866 | } |
| 867 | if (it->Done()) { |
| 868 | return false; |
| 869 | } |
| 870 | return it->SetVariableValue(variable_name, new_value); |
| 871 | } |
| 872 | |
| 873 | |
| 874 | // Change variable value in closure or local scope |
| 875 | // args[0]: number or JsFunction: break id or function |
| 876 | // args[1]: number: frame index (when arg[0] is break id) |
| 877 | // args[2]: number: inlined frame index (when arg[0] is break id) |
| 878 | // args[3]: number: scope index |
| 879 | // args[4]: string: variable name |
| 880 | // args[5]: object: new value |
| 881 | // |
| 882 | // Return true if success and false otherwise |
| 883 | RUNTIME_FUNCTION(Runtime_SetScopeVariableValue) { |
| 884 | HandleScope scope(isolate); |
| 885 | DCHECK(args.length() == 6); |
| 886 | |
| 887 | // Check arguments. |
| 888 | CONVERT_NUMBER_CHECKED(int, index, Int32, args[3]); |
| 889 | CONVERT_ARG_HANDLE_CHECKED(String, variable_name, 4); |
| 890 | CONVERT_ARG_HANDLE_CHECKED(Object, new_value, 5); |
| 891 | |
| 892 | bool res; |
| 893 | if (args[0]->IsNumber()) { |
| 894 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 895 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 896 | |
| 897 | CONVERT_SMI_ARG_CHECKED(wrapped_id, 1); |
| 898 | CONVERT_NUMBER_CHECKED(int, inlined_jsframe_index, Int32, args[2]); |
| 899 | |
| 900 | // Get the frame where the debugging is performed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 901 | StackFrame::Id id = DebugFrameHelper::UnwrapFrameId(wrapped_id); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 902 | JavaScriptFrameIterator frame_it(isolate, id); |
| 903 | JavaScriptFrame* frame = frame_it.frame(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 904 | FrameInspector frame_inspector(frame, inlined_jsframe_index, isolate); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 905 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 906 | ScopeIterator it(isolate, &frame_inspector); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 907 | res = SetScopeVariableValue(&it, index, variable_name, new_value); |
| 908 | } else { |
| 909 | CONVERT_ARG_HANDLE_CHECKED(JSFunction, fun, 0); |
| 910 | ScopeIterator it(isolate, fun); |
| 911 | res = SetScopeVariableValue(&it, index, variable_name, new_value); |
| 912 | } |
| 913 | |
| 914 | return isolate->heap()->ToBoolean(res); |
| 915 | } |
| 916 | |
| 917 | |
| 918 | RUNTIME_FUNCTION(Runtime_DebugPrintScopes) { |
| 919 | HandleScope scope(isolate); |
| 920 | DCHECK(args.length() == 0); |
| 921 | |
| 922 | #ifdef DEBUG |
| 923 | // Print the scopes for the top frame. |
| 924 | StackFrameLocator locator(isolate); |
| 925 | JavaScriptFrame* frame = locator.FindJavaScriptFrame(0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 926 | FrameInspector frame_inspector(frame, 0, isolate); |
| 927 | |
| 928 | for (ScopeIterator it(isolate, &frame_inspector); !it.Done(); it.Next()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 929 | it.DebugPrint(); |
| 930 | } |
| 931 | #endif |
| 932 | return isolate->heap()->undefined_value(); |
| 933 | } |
| 934 | |
| 935 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 936 | // Sets the disable break state |
| 937 | // args[0]: disable break state |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 938 | RUNTIME_FUNCTION(Runtime_SetBreakPointsActive) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 939 | HandleScope scope(isolate); |
| 940 | DCHECK(args.length() == 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 941 | CONVERT_BOOLEAN_ARG_CHECKED(active, 0); |
| 942 | isolate->debug()->set_break_points_active(active); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 943 | return isolate->heap()->undefined_value(); |
| 944 | } |
| 945 | |
| 946 | |
| 947 | static bool IsPositionAlignmentCodeCorrect(int alignment) { |
| 948 | return alignment == STATEMENT_ALIGNED || alignment == BREAK_POSITION_ALIGNED; |
| 949 | } |
| 950 | |
| 951 | |
| 952 | RUNTIME_FUNCTION(Runtime_GetBreakLocations) { |
| 953 | HandleScope scope(isolate); |
| 954 | DCHECK(args.length() == 2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 955 | RUNTIME_ASSERT(isolate->debug()->is_active()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 956 | CONVERT_ARG_HANDLE_CHECKED(JSFunction, fun, 0); |
| 957 | CONVERT_NUMBER_CHECKED(int32_t, statement_aligned_code, Int32, args[1]); |
| 958 | |
| 959 | if (!IsPositionAlignmentCodeCorrect(statement_aligned_code)) { |
| 960 | return isolate->ThrowIllegalOperation(); |
| 961 | } |
| 962 | BreakPositionAlignment alignment = |
| 963 | static_cast<BreakPositionAlignment>(statement_aligned_code); |
| 964 | |
| 965 | Handle<SharedFunctionInfo> shared(fun->shared()); |
| 966 | // Find the number of break points |
| 967 | Handle<Object> break_locations = |
| 968 | Debug::GetSourceBreakLocations(shared, alignment); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 969 | if (break_locations->IsUndefined(isolate)) { |
| 970 | return isolate->heap()->undefined_value(); |
| 971 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 972 | // Return array as JS array |
| 973 | return *isolate->factory()->NewJSArrayWithElements( |
| 974 | Handle<FixedArray>::cast(break_locations)); |
| 975 | } |
| 976 | |
| 977 | |
| 978 | // Set a break point in a function. |
| 979 | // args[0]: function |
| 980 | // args[1]: number: break source position (within the function source) |
| 981 | // args[2]: number: break point object |
| 982 | RUNTIME_FUNCTION(Runtime_SetFunctionBreakPoint) { |
| 983 | HandleScope scope(isolate); |
| 984 | DCHECK(args.length() == 3); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 985 | RUNTIME_ASSERT(isolate->debug()->is_active()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 986 | CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0); |
| 987 | CONVERT_NUMBER_CHECKED(int32_t, source_position, Int32, args[1]); |
| 988 | RUNTIME_ASSERT(source_position >= function->shared()->start_position() && |
| 989 | source_position <= function->shared()->end_position()); |
| 990 | CONVERT_ARG_HANDLE_CHECKED(Object, break_point_object_arg, 2); |
| 991 | |
| 992 | // Set break point. |
| 993 | RUNTIME_ASSERT(isolate->debug()->SetBreakPoint( |
| 994 | function, break_point_object_arg, &source_position)); |
| 995 | |
| 996 | return Smi::FromInt(source_position); |
| 997 | } |
| 998 | |
| 999 | |
| 1000 | // Changes the state of a break point in a script and returns source position |
| 1001 | // where break point was set. NOTE: Regarding performance see the NOTE for |
| 1002 | // GetScriptFromScriptData. |
| 1003 | // args[0]: script to set break point in |
| 1004 | // args[1]: number: break source position (within the script source) |
| 1005 | // args[2]: number, breakpoint position alignment |
| 1006 | // args[3]: number: break point object |
| 1007 | RUNTIME_FUNCTION(Runtime_SetScriptBreakPoint) { |
| 1008 | HandleScope scope(isolate); |
| 1009 | DCHECK(args.length() == 4); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1010 | RUNTIME_ASSERT(isolate->debug()->is_active()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1011 | CONVERT_ARG_HANDLE_CHECKED(JSValue, wrapper, 0); |
| 1012 | CONVERT_NUMBER_CHECKED(int32_t, source_position, Int32, args[1]); |
| 1013 | RUNTIME_ASSERT(source_position >= 0); |
| 1014 | CONVERT_NUMBER_CHECKED(int32_t, statement_aligned_code, Int32, args[2]); |
| 1015 | CONVERT_ARG_HANDLE_CHECKED(Object, break_point_object_arg, 3); |
| 1016 | |
| 1017 | if (!IsPositionAlignmentCodeCorrect(statement_aligned_code)) { |
| 1018 | return isolate->ThrowIllegalOperation(); |
| 1019 | } |
| 1020 | BreakPositionAlignment alignment = |
| 1021 | static_cast<BreakPositionAlignment>(statement_aligned_code); |
| 1022 | |
| 1023 | // Get the script from the script wrapper. |
| 1024 | RUNTIME_ASSERT(wrapper->value()->IsScript()); |
| 1025 | Handle<Script> script(Script::cast(wrapper->value())); |
| 1026 | |
| 1027 | // Set break point. |
| 1028 | if (!isolate->debug()->SetBreakPointForScript(script, break_point_object_arg, |
| 1029 | &source_position, alignment)) { |
| 1030 | return isolate->heap()->undefined_value(); |
| 1031 | } |
| 1032 | |
| 1033 | return Smi::FromInt(source_position); |
| 1034 | } |
| 1035 | |
| 1036 | |
| 1037 | // Clear a break point |
| 1038 | // args[0]: number: break point object |
| 1039 | RUNTIME_FUNCTION(Runtime_ClearBreakPoint) { |
| 1040 | HandleScope scope(isolate); |
| 1041 | DCHECK(args.length() == 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1042 | RUNTIME_ASSERT(isolate->debug()->is_active()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1043 | CONVERT_ARG_HANDLE_CHECKED(Object, break_point_object_arg, 0); |
| 1044 | |
| 1045 | // Clear break point. |
| 1046 | isolate->debug()->ClearBreakPoint(break_point_object_arg); |
| 1047 | |
| 1048 | return isolate->heap()->undefined_value(); |
| 1049 | } |
| 1050 | |
| 1051 | |
| 1052 | // Change the state of break on exceptions. |
| 1053 | // args[0]: Enum value indicating whether to affect caught/uncaught exceptions. |
| 1054 | // args[1]: Boolean indicating on/off. |
| 1055 | RUNTIME_FUNCTION(Runtime_ChangeBreakOnException) { |
| 1056 | HandleScope scope(isolate); |
| 1057 | DCHECK(args.length() == 2); |
| 1058 | CONVERT_NUMBER_CHECKED(uint32_t, type_arg, Uint32, args[0]); |
| 1059 | CONVERT_BOOLEAN_ARG_CHECKED(enable, 1); |
| 1060 | |
| 1061 | // If the number doesn't match an enum value, the ChangeBreakOnException |
| 1062 | // function will default to affecting caught exceptions. |
| 1063 | ExceptionBreakType type = static_cast<ExceptionBreakType>(type_arg); |
| 1064 | // Update break point state. |
| 1065 | isolate->debug()->ChangeBreakOnException(type, enable); |
| 1066 | return isolate->heap()->undefined_value(); |
| 1067 | } |
| 1068 | |
| 1069 | |
| 1070 | // Returns the state of break on exceptions |
| 1071 | // args[0]: boolean indicating uncaught exceptions |
| 1072 | RUNTIME_FUNCTION(Runtime_IsBreakOnException) { |
| 1073 | HandleScope scope(isolate); |
| 1074 | DCHECK(args.length() == 1); |
| 1075 | CONVERT_NUMBER_CHECKED(uint32_t, type_arg, Uint32, args[0]); |
| 1076 | |
| 1077 | ExceptionBreakType type = static_cast<ExceptionBreakType>(type_arg); |
| 1078 | bool result = isolate->debug()->IsBreakOnException(type); |
| 1079 | return Smi::FromInt(result); |
| 1080 | } |
| 1081 | |
| 1082 | |
| 1083 | // Prepare for stepping |
| 1084 | // args[0]: break id for checking execution state |
| 1085 | // args[1]: step action from the enumeration StepAction |
| 1086 | // args[2]: number of times to perform the step, for step out it is the number |
| 1087 | // of frames to step down. |
| 1088 | RUNTIME_FUNCTION(Runtime_PrepareStep) { |
| 1089 | HandleScope scope(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1090 | DCHECK(args.length() == 2); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1091 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 1092 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 1093 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1094 | if (!args[1]->IsNumber()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1095 | return isolate->Throw(isolate->heap()->illegal_argument_string()); |
| 1096 | } |
| 1097 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1098 | // Get the step action and check validity. |
| 1099 | StepAction step_action = static_cast<StepAction>(NumberToInt32(args[1])); |
| 1100 | if (step_action != StepIn && step_action != StepNext && |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1101 | step_action != StepOut && step_action != StepFrame) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1102 | return isolate->Throw(isolate->heap()->illegal_argument_string()); |
| 1103 | } |
| 1104 | |
| 1105 | // Clear all current stepping setup. |
| 1106 | isolate->debug()->ClearStepping(); |
| 1107 | |
| 1108 | // Prepare step. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1109 | isolate->debug()->PrepareStep(static_cast<StepAction>(step_action)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1110 | return isolate->heap()->undefined_value(); |
| 1111 | } |
| 1112 | |
| 1113 | |
| 1114 | // Clear all stepping set by PrepareStep. |
| 1115 | RUNTIME_FUNCTION(Runtime_ClearStepping) { |
| 1116 | HandleScope scope(isolate); |
| 1117 | DCHECK(args.length() == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1118 | RUNTIME_ASSERT(isolate->debug()->is_active()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1119 | isolate->debug()->ClearStepping(); |
| 1120 | return isolate->heap()->undefined_value(); |
| 1121 | } |
| 1122 | |
| 1123 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1124 | RUNTIME_FUNCTION(Runtime_DebugEvaluate) { |
| 1125 | HandleScope scope(isolate); |
| 1126 | |
| 1127 | // Check the execution state and decode arguments frame and source to be |
| 1128 | // evaluated. |
| 1129 | DCHECK(args.length() == 6); |
| 1130 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 1131 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 1132 | |
| 1133 | CONVERT_SMI_ARG_CHECKED(wrapped_id, 1); |
| 1134 | CONVERT_NUMBER_CHECKED(int, inlined_jsframe_index, Int32, args[2]); |
| 1135 | CONVERT_ARG_HANDLE_CHECKED(String, source, 3); |
| 1136 | CONVERT_BOOLEAN_ARG_CHECKED(disable_break, 4); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1137 | CONVERT_ARG_HANDLE_CHECKED(HeapObject, context_extension, 5); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1138 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1139 | StackFrame::Id id = DebugFrameHelper::UnwrapFrameId(wrapped_id); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1140 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1141 | RETURN_RESULT_OR_FAILURE( |
| 1142 | isolate, DebugEvaluate::Local(isolate, id, inlined_jsframe_index, source, |
| 1143 | disable_break, context_extension)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1144 | } |
| 1145 | |
| 1146 | |
| 1147 | RUNTIME_FUNCTION(Runtime_DebugEvaluateGlobal) { |
| 1148 | HandleScope scope(isolate); |
| 1149 | |
| 1150 | // Check the execution state and decode arguments frame and source to be |
| 1151 | // evaluated. |
| 1152 | DCHECK(args.length() == 4); |
| 1153 | CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]); |
| 1154 | RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id)); |
| 1155 | |
| 1156 | CONVERT_ARG_HANDLE_CHECKED(String, source, 1); |
| 1157 | CONVERT_BOOLEAN_ARG_CHECKED(disable_break, 2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1158 | CONVERT_ARG_HANDLE_CHECKED(HeapObject, context_extension, 3); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1159 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1160 | RETURN_RESULT_OR_FAILURE( |
| 1161 | isolate, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1162 | DebugEvaluate::Global(isolate, source, disable_break, context_extension)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1163 | } |
| 1164 | |
| 1165 | |
| 1166 | RUNTIME_FUNCTION(Runtime_DebugGetLoadedScripts) { |
| 1167 | HandleScope scope(isolate); |
| 1168 | DCHECK(args.length() == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1169 | RUNTIME_ASSERT(isolate->debug()->is_active()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1170 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1171 | Handle<FixedArray> instances; |
| 1172 | { |
| 1173 | DebugScope debug_scope(isolate->debug()); |
| 1174 | if (debug_scope.failed()) { |
| 1175 | DCHECK(isolate->has_pending_exception()); |
| 1176 | return isolate->heap()->exception(); |
| 1177 | } |
| 1178 | // Fill the script objects. |
| 1179 | instances = isolate->debug()->GetLoadedScripts(); |
| 1180 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1181 | |
| 1182 | // Convert the script objects to proper JS objects. |
| 1183 | for (int i = 0; i < instances->length(); i++) { |
| 1184 | Handle<Script> script = Handle<Script>(Script::cast(instances->get(i))); |
| 1185 | // Get the script wrapper in a local handle before calling GetScriptWrapper, |
| 1186 | // because using |
| 1187 | // instances->set(i, *GetScriptWrapper(script)) |
| 1188 | // is unsafe as GetScriptWrapper might call GC and the C++ compiler might |
| 1189 | // already have dereferenced the instances handle. |
| 1190 | Handle<JSObject> wrapper = Script::GetWrapper(script); |
| 1191 | instances->set(i, *wrapper); |
| 1192 | } |
| 1193 | |
| 1194 | // Return result as a JS array. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1195 | return *isolate->factory()->NewJSArrayWithElements(instances); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1196 | } |
| 1197 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1198 | static bool HasInPrototypeChainIgnoringProxies(Isolate* isolate, |
| 1199 | JSObject* object, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1200 | Object* proto) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1201 | PrototypeIterator iter(isolate, object, kStartAtReceiver); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1202 | while (true) { |
| 1203 | iter.AdvanceIgnoringProxies(); |
| 1204 | if (iter.IsAtEnd()) return false; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1205 | if (iter.GetCurrent() == proto) return true; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1206 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1207 | } |
| 1208 | |
| 1209 | |
| 1210 | // Scan the heap for objects with direct references to an object |
| 1211 | // args[0]: the object to find references to |
| 1212 | // args[1]: constructor function for instances to exclude (Mirror) |
| 1213 | // args[2]: the the maximum number of objects to return |
| 1214 | RUNTIME_FUNCTION(Runtime_DebugReferencedBy) { |
| 1215 | HandleScope scope(isolate); |
| 1216 | DCHECK(args.length() == 3); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1217 | CONVERT_ARG_HANDLE_CHECKED(JSObject, target, 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1218 | CONVERT_ARG_HANDLE_CHECKED(Object, filter, 1); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1219 | RUNTIME_ASSERT(filter->IsUndefined(isolate) || filter->IsJSObject()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1220 | CONVERT_NUMBER_CHECKED(int32_t, max_references, Int32, args[2]); |
| 1221 | RUNTIME_ASSERT(max_references >= 0); |
| 1222 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1223 | List<Handle<JSObject> > instances; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1224 | Heap* heap = isolate->heap(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1225 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1226 | HeapIterator iterator(heap, HeapIterator::kFilterUnreachable); |
| 1227 | // Get the constructor function for context extension and arguments array. |
| 1228 | Object* arguments_fun = isolate->sloppy_arguments_map()->GetConstructor(); |
| 1229 | HeapObject* heap_obj; |
| 1230 | while ((heap_obj = iterator.next())) { |
| 1231 | if (!heap_obj->IsJSObject()) continue; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1232 | JSObject* obj = JSObject::cast(heap_obj); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1233 | if (obj->IsJSContextExtensionObject()) continue; |
| 1234 | if (obj->map()->GetConstructor() == arguments_fun) continue; |
| 1235 | if (!obj->ReferencesObject(*target)) continue; |
| 1236 | // Check filter if supplied. This is normally used to avoid |
| 1237 | // references from mirror objects. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1238 | if (!filter->IsUndefined(isolate) && |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1239 | HasInPrototypeChainIgnoringProxies(isolate, obj, *filter)) { |
| 1240 | continue; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1241 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1242 | if (obj->IsJSGlobalObject()) { |
| 1243 | obj = JSGlobalObject::cast(obj)->global_proxy(); |
| 1244 | } |
| 1245 | instances.Add(Handle<JSObject>(obj)); |
| 1246 | if (instances.length() == max_references) break; |
| 1247 | } |
| 1248 | // Iterate the rest of the heap to satisfy HeapIterator constraints. |
| 1249 | while (iterator.next()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1250 | } |
| 1251 | } |
| 1252 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1253 | Handle<FixedArray> result; |
| 1254 | if (instances.length() == 1 && instances.last().is_identical_to(target)) { |
| 1255 | // Check for circular reference only. This can happen when the object is |
| 1256 | // only referenced from mirrors and has a circular reference in which case |
| 1257 | // the object is not really alive and would have been garbage collected if |
| 1258 | // not referenced from the mirror. |
| 1259 | result = isolate->factory()->empty_fixed_array(); |
| 1260 | } else { |
| 1261 | result = isolate->factory()->NewFixedArray(instances.length()); |
| 1262 | for (int i = 0; i < instances.length(); ++i) result->set(i, *instances[i]); |
| 1263 | } |
| 1264 | return *isolate->factory()->NewJSArrayWithElements(result); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1265 | } |
| 1266 | |
| 1267 | |
| 1268 | // Scan the heap for objects constructed by a specific function. |
| 1269 | // args[0]: the constructor to find instances of |
| 1270 | // args[1]: the the maximum number of objects to return |
| 1271 | RUNTIME_FUNCTION(Runtime_DebugConstructedBy) { |
| 1272 | HandleScope scope(isolate); |
| 1273 | DCHECK(args.length() == 2); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1274 | CONVERT_ARG_HANDLE_CHECKED(JSFunction, constructor, 0); |
| 1275 | CONVERT_NUMBER_CHECKED(int32_t, max_references, Int32, args[1]); |
| 1276 | RUNTIME_ASSERT(max_references >= 0); |
| 1277 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1278 | List<Handle<JSObject> > instances; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1279 | Heap* heap = isolate->heap(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1280 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1281 | HeapIterator iterator(heap, HeapIterator::kFilterUnreachable); |
| 1282 | HeapObject* heap_obj; |
| 1283 | while ((heap_obj = iterator.next())) { |
| 1284 | if (!heap_obj->IsJSObject()) continue; |
| 1285 | JSObject* obj = JSObject::cast(heap_obj); |
| 1286 | if (obj->map()->GetConstructor() != *constructor) continue; |
| 1287 | instances.Add(Handle<JSObject>(obj)); |
| 1288 | if (instances.length() == max_references) break; |
| 1289 | } |
| 1290 | // Iterate the rest of the heap to satisfy HeapIterator constraints. |
| 1291 | while (iterator.next()) { |
| 1292 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1293 | } |
| 1294 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1295 | Handle<FixedArray> result = |
| 1296 | isolate->factory()->NewFixedArray(instances.length()); |
| 1297 | for (int i = 0; i < instances.length(); ++i) result->set(i, *instances[i]); |
| 1298 | return *isolate->factory()->NewJSArrayWithElements(result); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1299 | } |
| 1300 | |
| 1301 | |
| 1302 | // Find the effective prototype object as returned by __proto__. |
| 1303 | // args[0]: the object to find the prototype for. |
| 1304 | RUNTIME_FUNCTION(Runtime_DebugGetPrototype) { |
| 1305 | HandleScope shs(isolate); |
| 1306 | DCHECK(args.length() == 1); |
| 1307 | CONVERT_ARG_HANDLE_CHECKED(JSObject, obj, 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1308 | // TODO(1543): Come up with a solution for clients to handle potential errors |
| 1309 | // thrown by an intermediate proxy. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1310 | RETURN_RESULT_OR_FAILURE(isolate, JSReceiver::GetPrototype(isolate, obj)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1311 | } |
| 1312 | |
| 1313 | |
| 1314 | // Patches script source (should be called upon BeforeCompile event). |
| 1315 | RUNTIME_FUNCTION(Runtime_DebugSetScriptSource) { |
| 1316 | HandleScope scope(isolate); |
| 1317 | DCHECK(args.length() == 2); |
| 1318 | |
| 1319 | CONVERT_ARG_HANDLE_CHECKED(JSValue, script_wrapper, 0); |
| 1320 | CONVERT_ARG_HANDLE_CHECKED(String, source, 1); |
| 1321 | |
| 1322 | RUNTIME_ASSERT(script_wrapper->value()->IsScript()); |
| 1323 | Handle<Script> script(Script::cast(script_wrapper->value())); |
| 1324 | |
| 1325 | int compilation_state = script->compilation_state(); |
| 1326 | RUNTIME_ASSERT(compilation_state == Script::COMPILATION_STATE_INITIAL); |
| 1327 | script->set_source(*source); |
| 1328 | |
| 1329 | return isolate->heap()->undefined_value(); |
| 1330 | } |
| 1331 | |
| 1332 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1333 | RUNTIME_FUNCTION(Runtime_FunctionGetInferredName) { |
| 1334 | SealHandleScope shs(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1335 | DCHECK_EQ(1, args.length()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1336 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1337 | CONVERT_ARG_CHECKED(Object, f, 0); |
| 1338 | if (f->IsJSFunction()) { |
| 1339 | return JSFunction::cast(f)->shared()->inferred_name(); |
| 1340 | } |
| 1341 | return isolate->heap()->empty_string(); |
| 1342 | } |
| 1343 | |
| 1344 | |
| 1345 | RUNTIME_FUNCTION(Runtime_FunctionGetDebugName) { |
| 1346 | HandleScope scope(isolate); |
| 1347 | DCHECK_EQ(1, args.length()); |
| 1348 | |
| 1349 | CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0); |
| 1350 | |
| 1351 | if (function->IsJSBoundFunction()) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1352 | RETURN_RESULT_OR_FAILURE( |
| 1353 | isolate, JSBoundFunction::GetName( |
| 1354 | isolate, Handle<JSBoundFunction>::cast(function))); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1355 | } else { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1356 | return *JSFunction::GetDebugName(Handle<JSFunction>::cast(function)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1357 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1358 | } |
| 1359 | |
| 1360 | |
| 1361 | // A testing entry. Returns statement position which is the closest to |
| 1362 | // source_position. |
| 1363 | RUNTIME_FUNCTION(Runtime_GetFunctionCodePositionFromSource) { |
| 1364 | HandleScope scope(isolate); |
| 1365 | CHECK(isolate->debug()->live_edit_enabled()); |
| 1366 | DCHECK(args.length() == 2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1367 | RUNTIME_ASSERT(isolate->debug()->is_active()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1368 | CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0); |
| 1369 | CONVERT_NUMBER_CHECKED(int32_t, source_position, Int32, args[1]); |
| 1370 | |
| 1371 | Handle<Code> code(function->code(), isolate); |
| 1372 | |
| 1373 | if (code->kind() != Code::FUNCTION && |
| 1374 | code->kind() != Code::OPTIMIZED_FUNCTION) { |
| 1375 | return isolate->heap()->undefined_value(); |
| 1376 | } |
| 1377 | |
| 1378 | RelocIterator it(*code, RelocInfo::ModeMask(RelocInfo::STATEMENT_POSITION)); |
| 1379 | int closest_pc = 0; |
| 1380 | int distance = kMaxInt; |
| 1381 | while (!it.done()) { |
| 1382 | int statement_position = static_cast<int>(it.rinfo()->data()); |
| 1383 | // Check if this break point is closer that what was previously found. |
| 1384 | if (source_position <= statement_position && |
| 1385 | statement_position - source_position < distance) { |
| 1386 | closest_pc = |
| 1387 | static_cast<int>(it.rinfo()->pc() - code->instruction_start()); |
| 1388 | distance = statement_position - source_position; |
| 1389 | // Check whether we can't get any closer. |
| 1390 | if (distance == 0) break; |
| 1391 | } |
| 1392 | it.next(); |
| 1393 | } |
| 1394 | |
| 1395 | return Smi::FromInt(closest_pc); |
| 1396 | } |
| 1397 | |
| 1398 | |
| 1399 | // Calls specified function with or without entering the debugger. |
| 1400 | // This is used in unit tests to run code as if debugger is entered or simply |
| 1401 | // to have a stack with C++ frame in the middle. |
| 1402 | RUNTIME_FUNCTION(Runtime_ExecuteInDebugContext) { |
| 1403 | HandleScope scope(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1404 | DCHECK(args.length() == 1); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1405 | CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1406 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1407 | DebugScope debug_scope(isolate->debug()); |
| 1408 | if (debug_scope.failed()) { |
| 1409 | DCHECK(isolate->has_pending_exception()); |
| 1410 | return isolate->heap()->exception(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1411 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1412 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1413 | RETURN_RESULT_OR_FAILURE( |
| 1414 | isolate, Execution::Call(isolate, function, |
| 1415 | handle(function->global_proxy()), 0, NULL)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1416 | } |
| 1417 | |
| 1418 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1419 | RUNTIME_FUNCTION(Runtime_GetDebugContext) { |
| 1420 | HandleScope scope(isolate); |
| 1421 | DCHECK(args.length() == 0); |
| 1422 | Handle<Context> context; |
| 1423 | { |
| 1424 | DebugScope debug_scope(isolate->debug()); |
| 1425 | if (debug_scope.failed()) { |
| 1426 | DCHECK(isolate->has_pending_exception()); |
| 1427 | return isolate->heap()->exception(); |
| 1428 | } |
| 1429 | context = isolate->debug()->GetDebugContext(); |
| 1430 | } |
| 1431 | if (context.is_null()) return isolate->heap()->undefined_value(); |
| 1432 | context->set_security_token(isolate->native_context()->security_token()); |
| 1433 | return context->global_proxy(); |
| 1434 | } |
| 1435 | |
| 1436 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1437 | // Performs a GC. |
| 1438 | // Presently, it only does a full GC. |
| 1439 | RUNTIME_FUNCTION(Runtime_CollectGarbage) { |
| 1440 | SealHandleScope shs(isolate); |
| 1441 | DCHECK(args.length() == 1); |
| 1442 | isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, "%CollectGarbage"); |
| 1443 | return isolate->heap()->undefined_value(); |
| 1444 | } |
| 1445 | |
| 1446 | |
| 1447 | // Gets the current heap usage. |
| 1448 | RUNTIME_FUNCTION(Runtime_GetHeapUsage) { |
| 1449 | SealHandleScope shs(isolate); |
| 1450 | DCHECK(args.length() == 0); |
| 1451 | int usage = static_cast<int>(isolate->heap()->SizeOfObjects()); |
| 1452 | if (!Smi::IsValid(usage)) { |
| 1453 | return *isolate->factory()->NewNumberFromInt(usage); |
| 1454 | } |
| 1455 | return Smi::FromInt(usage); |
| 1456 | } |
| 1457 | |
| 1458 | |
| 1459 | // Finds the script object from the script data. NOTE: This operation uses |
| 1460 | // heap traversal to find the function generated for the source position |
| 1461 | // for the requested break point. For lazily compiled functions several heap |
| 1462 | // traversals might be required rendering this operation as a rather slow |
| 1463 | // operation. However for setting break points which is normally done through |
| 1464 | // some kind of user interaction the performance is not crucial. |
| 1465 | RUNTIME_FUNCTION(Runtime_GetScript) { |
| 1466 | HandleScope scope(isolate); |
| 1467 | DCHECK(args.length() == 1); |
| 1468 | CONVERT_ARG_HANDLE_CHECKED(String, script_name, 0); |
| 1469 | |
| 1470 | Handle<Script> found; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1471 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1472 | Script::Iterator iterator(isolate); |
| 1473 | Script* script = NULL; |
| 1474 | while ((script = iterator.Next()) != NULL) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1475 | if (!script->name()->IsString()) continue; |
| 1476 | String* name = String::cast(script->name()); |
| 1477 | if (name->Equals(*script_name)) { |
| 1478 | found = Handle<Script>(script, isolate); |
| 1479 | break; |
| 1480 | } |
| 1481 | } |
| 1482 | } |
| 1483 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1484 | if (found.is_null()) return isolate->heap()->undefined_value(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1485 | return *Script::GetWrapper(found); |
| 1486 | } |
| 1487 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1488 | RUNTIME_FUNCTION(Runtime_ScriptLineCount) { |
| 1489 | HandleScope scope(isolate); |
| 1490 | DCHECK(args.length() == 1); |
| 1491 | CONVERT_ARG_CHECKED(JSValue, script, 0); |
| 1492 | |
| 1493 | RUNTIME_ASSERT(script->value()->IsScript()); |
| 1494 | Handle<Script> script_handle = Handle<Script>(Script::cast(script->value())); |
| 1495 | |
| 1496 | Script::InitLineEnds(script_handle); |
| 1497 | |
| 1498 | FixedArray* line_ends_array = FixedArray::cast(script_handle->line_ends()); |
| 1499 | return Smi::FromInt(line_ends_array->length()); |
| 1500 | } |
| 1501 | |
| 1502 | RUNTIME_FUNCTION(Runtime_ScriptLineStartPosition) { |
| 1503 | HandleScope scope(isolate); |
| 1504 | DCHECK(args.length() == 2); |
| 1505 | CONVERT_ARG_CHECKED(JSValue, script, 0); |
| 1506 | CONVERT_NUMBER_CHECKED(int32_t, line, Int32, args[1]); |
| 1507 | |
| 1508 | RUNTIME_ASSERT(script->value()->IsScript()); |
| 1509 | Handle<Script> script_handle = Handle<Script>(Script::cast(script->value())); |
| 1510 | |
| 1511 | Script::InitLineEnds(script_handle); |
| 1512 | |
| 1513 | FixedArray* line_ends_array = FixedArray::cast(script_handle->line_ends()); |
| 1514 | const int line_count = line_ends_array->length(); |
| 1515 | |
| 1516 | // If line == line_count, we return the first position beyond the last line. |
| 1517 | if (line < 0 || line > line_count) { |
| 1518 | return Smi::FromInt(-1); |
| 1519 | } else if (line == 0) { |
| 1520 | return Smi::FromInt(0); |
| 1521 | } else { |
| 1522 | DCHECK(0 < line && line <= line_count); |
| 1523 | const int pos = Smi::cast(line_ends_array->get(line - 1))->value() + 1; |
| 1524 | return Smi::FromInt(pos); |
| 1525 | } |
| 1526 | } |
| 1527 | |
| 1528 | RUNTIME_FUNCTION(Runtime_ScriptLineEndPosition) { |
| 1529 | HandleScope scope(isolate); |
| 1530 | DCHECK(args.length() == 2); |
| 1531 | CONVERT_ARG_CHECKED(JSValue, script, 0); |
| 1532 | CONVERT_NUMBER_CHECKED(int32_t, line, Int32, args[1]); |
| 1533 | |
| 1534 | RUNTIME_ASSERT(script->value()->IsScript()); |
| 1535 | Handle<Script> script_handle = Handle<Script>(Script::cast(script->value())); |
| 1536 | |
| 1537 | Script::InitLineEnds(script_handle); |
| 1538 | |
| 1539 | FixedArray* line_ends_array = FixedArray::cast(script_handle->line_ends()); |
| 1540 | const int line_count = line_ends_array->length(); |
| 1541 | |
| 1542 | if (line < 0 || line >= line_count) { |
| 1543 | return Smi::FromInt(-1); |
| 1544 | } else { |
| 1545 | return Smi::cast(line_ends_array->get(line)); |
| 1546 | } |
| 1547 | } |
| 1548 | |
| 1549 | static Handle<Object> GetJSPositionInfo(Handle<Script> script, int position, |
| 1550 | Script::OffsetFlag offset_flag, |
| 1551 | Isolate* isolate) { |
| 1552 | Script::PositionInfo info; |
| 1553 | if (!script->GetPositionInfo(position, &info, offset_flag)) { |
| 1554 | return handle(isolate->heap()->null_value(), isolate); |
| 1555 | } |
| 1556 | |
| 1557 | Handle<String> source = handle(String::cast(script->source()), isolate); |
| 1558 | Handle<String> sourceText = |
| 1559 | isolate->factory()->NewSubString(source, info.line_start, info.line_end); |
| 1560 | |
| 1561 | Handle<JSObject> jsinfo = |
| 1562 | isolate->factory()->NewJSObject(isolate->object_function()); |
| 1563 | |
| 1564 | JSObject::AddProperty(jsinfo, isolate->factory()->script_string(), script, |
| 1565 | NONE); |
| 1566 | JSObject::AddProperty(jsinfo, isolate->factory()->position_string(), |
| 1567 | handle(Smi::FromInt(position), isolate), NONE); |
| 1568 | JSObject::AddProperty(jsinfo, isolate->factory()->line_string(), |
| 1569 | handle(Smi::FromInt(info.line), isolate), NONE); |
| 1570 | JSObject::AddProperty(jsinfo, isolate->factory()->column_string(), |
| 1571 | handle(Smi::FromInt(info.column), isolate), NONE); |
| 1572 | JSObject::AddProperty(jsinfo, isolate->factory()->sourceText_string(), |
| 1573 | sourceText, NONE); |
| 1574 | |
| 1575 | return jsinfo; |
| 1576 | } |
| 1577 | |
| 1578 | // Get information on a specific source line and column possibly offset by a |
| 1579 | // fixed source position. This function is used to find a source position from |
| 1580 | // a line and column position. The fixed source position offset is typically |
| 1581 | // used to find a source position in a function based on a line and column in |
| 1582 | // the source for the function alone. The offset passed will then be the |
| 1583 | // start position of the source for the function within the full script source. |
| 1584 | // Note that incoming line and column parameters may be undefined, and are |
| 1585 | // assumed to be passed *with* offsets. |
| 1586 | RUNTIME_FUNCTION(Runtime_ScriptLocationFromLine) { |
| 1587 | HandleScope scope(isolate); |
| 1588 | DCHECK(args.length() == 4); |
| 1589 | CONVERT_ARG_CHECKED(JSValue, script, 0); |
| 1590 | |
| 1591 | RUNTIME_ASSERT(script->value()->IsScript()); |
| 1592 | Handle<Script> script_handle = Handle<Script>(Script::cast(script->value())); |
| 1593 | |
| 1594 | // Line and column are possibly undefined and we need to handle these cases, |
| 1595 | // additionally subtracting corresponding offsets. |
| 1596 | |
| 1597 | int32_t line; |
| 1598 | if (args[1]->IsNull(isolate) || args[1]->IsUndefined(isolate)) { |
| 1599 | line = 0; |
| 1600 | } else { |
| 1601 | RUNTIME_ASSERT(args[1]->IsNumber()); |
| 1602 | line = NumberToInt32(args[1]) - script_handle->line_offset(); |
| 1603 | } |
| 1604 | |
| 1605 | int32_t column; |
| 1606 | if (args[2]->IsNull(isolate) || args[2]->IsUndefined(isolate)) { |
| 1607 | column = 0; |
| 1608 | } else { |
| 1609 | RUNTIME_ASSERT(args[2]->IsNumber()); |
| 1610 | column = NumberToInt32(args[2]); |
| 1611 | if (line == 0) column -= script_handle->column_offset(); |
| 1612 | } |
| 1613 | |
| 1614 | CONVERT_NUMBER_CHECKED(int32_t, offset_position, Int32, args[3]); |
| 1615 | |
| 1616 | if (line < 0 || column < 0 || offset_position < 0) { |
| 1617 | return isolate->heap()->null_value(); |
| 1618 | } |
| 1619 | |
| 1620 | Script::InitLineEnds(script_handle); |
| 1621 | |
| 1622 | FixedArray* line_ends_array = FixedArray::cast(script_handle->line_ends()); |
| 1623 | const int line_count = line_ends_array->length(); |
| 1624 | |
| 1625 | int position; |
| 1626 | if (line == 0) { |
| 1627 | position = offset_position + column; |
| 1628 | } else { |
| 1629 | Script::PositionInfo info; |
| 1630 | if (!script_handle->GetPositionInfo(offset_position, &info, |
| 1631 | Script::NO_OFFSET) || |
| 1632 | info.line + line >= line_count) { |
| 1633 | return isolate->heap()->null_value(); |
| 1634 | } |
| 1635 | |
| 1636 | const int offset_line = info.line + line; |
| 1637 | const int offset_line_position = |
| 1638 | (offset_line == 0) |
| 1639 | ? 0 |
| 1640 | : Smi::cast(line_ends_array->get(offset_line - 1))->value() + 1; |
| 1641 | position = offset_line_position + column; |
| 1642 | } |
| 1643 | |
| 1644 | return *GetJSPositionInfo(script_handle, position, Script::NO_OFFSET, |
| 1645 | isolate); |
| 1646 | } |
| 1647 | |
| 1648 | RUNTIME_FUNCTION(Runtime_ScriptPositionInfo) { |
| 1649 | HandleScope scope(isolate); |
| 1650 | DCHECK(args.length() == 3); |
| 1651 | CONVERT_ARG_CHECKED(JSValue, script, 0); |
| 1652 | CONVERT_NUMBER_CHECKED(int32_t, position, Int32, args[1]); |
| 1653 | CONVERT_BOOLEAN_ARG_CHECKED(with_offset, 2); |
| 1654 | |
| 1655 | RUNTIME_ASSERT(script->value()->IsScript()); |
| 1656 | Handle<Script> script_handle = Handle<Script>(Script::cast(script->value())); |
| 1657 | |
| 1658 | const Script::OffsetFlag offset_flag = |
| 1659 | with_offset ? Script::WITH_OFFSET : Script::NO_OFFSET; |
| 1660 | return *GetJSPositionInfo(script_handle, position, offset_flag, isolate); |
| 1661 | } |
| 1662 | |
| 1663 | // Returns the given line as a string, or null if line is out of bounds. |
| 1664 | // The parameter line is expected to include the script's line offset. |
| 1665 | RUNTIME_FUNCTION(Runtime_ScriptSourceLine) { |
| 1666 | HandleScope scope(isolate); |
| 1667 | DCHECK(args.length() == 2); |
| 1668 | CONVERT_ARG_CHECKED(JSValue, script, 0); |
| 1669 | CONVERT_NUMBER_CHECKED(int32_t, line, Int32, args[1]); |
| 1670 | |
| 1671 | RUNTIME_ASSERT(script->value()->IsScript()); |
| 1672 | Handle<Script> script_handle = Handle<Script>(Script::cast(script->value())); |
| 1673 | |
| 1674 | Script::InitLineEnds(script_handle); |
| 1675 | |
| 1676 | FixedArray* line_ends_array = FixedArray::cast(script_handle->line_ends()); |
| 1677 | const int line_count = line_ends_array->length(); |
| 1678 | |
| 1679 | line -= script_handle->line_offset(); |
| 1680 | if (line < 0 || line_count <= line) { |
| 1681 | return isolate->heap()->null_value(); |
| 1682 | } |
| 1683 | |
| 1684 | const int start = |
| 1685 | (line == 0) ? 0 : Smi::cast(line_ends_array->get(line - 1))->value() + 1; |
| 1686 | const int end = Smi::cast(line_ends_array->get(line))->value(); |
| 1687 | |
| 1688 | Handle<String> source = |
| 1689 | handle(String::cast(script_handle->source()), isolate); |
| 1690 | Handle<String> str = isolate->factory()->NewSubString(source, start, end); |
| 1691 | |
| 1692 | return *str; |
| 1693 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1694 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1695 | // Set one shot breakpoints for the callback function that is passed to a |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1696 | // built-in function such as Array.forEach to enable stepping into the callback, |
| 1697 | // if we are indeed stepping and the callback is subject to debugging. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1698 | RUNTIME_FUNCTION(Runtime_DebugPrepareStepInIfStepping) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1699 | HandleScope scope(isolate); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1700 | DCHECK_EQ(1, args.length()); |
| 1701 | CONVERT_ARG_HANDLE_CHECKED(JSFunction, fun, 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1702 | isolate->debug()->PrepareStepIn(fun); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1703 | return isolate->heap()->undefined_value(); |
| 1704 | } |
| 1705 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1706 | // Set one shot breakpoints for the suspended generator object. |
| 1707 | RUNTIME_FUNCTION(Runtime_DebugPrepareStepInSuspendedGenerator) { |
| 1708 | HandleScope scope(isolate); |
| 1709 | DCHECK_EQ(0, args.length()); |
| 1710 | isolate->debug()->PrepareStepInSuspendedGenerator(); |
| 1711 | return isolate->heap()->undefined_value(); |
| 1712 | } |
| 1713 | |
| 1714 | RUNTIME_FUNCTION(Runtime_DebugRecordAsyncFunction) { |
| 1715 | HandleScope scope(isolate); |
| 1716 | DCHECK_EQ(1, args.length()); |
| 1717 | CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator, 0); |
| 1718 | CHECK(isolate->debug()->last_step_action() >= StepNext); |
| 1719 | isolate->debug()->RecordAsyncFunction(generator); |
| 1720 | return isolate->heap()->undefined_value(); |
| 1721 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1722 | |
| 1723 | RUNTIME_FUNCTION(Runtime_DebugPushPromise) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1724 | DCHECK(args.length() == 2); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1725 | HandleScope scope(isolate); |
| 1726 | CONVERT_ARG_HANDLE_CHECKED(JSObject, promise, 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1727 | CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 1); |
| 1728 | isolate->PushPromise(promise, function); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1729 | return isolate->heap()->undefined_value(); |
| 1730 | } |
| 1731 | |
| 1732 | |
| 1733 | RUNTIME_FUNCTION(Runtime_DebugPopPromise) { |
| 1734 | DCHECK(args.length() == 0); |
| 1735 | SealHandleScope shs(isolate); |
| 1736 | isolate->PopPromise(); |
| 1737 | return isolate->heap()->undefined_value(); |
| 1738 | } |
| 1739 | |
| 1740 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1741 | RUNTIME_FUNCTION(Runtime_DebugAsyncTaskEvent) { |
| 1742 | DCHECK(args.length() == 1); |
| 1743 | HandleScope scope(isolate); |
| 1744 | CONVERT_ARG_HANDLE_CHECKED(JSObject, data, 0); |
| 1745 | isolate->debug()->OnAsyncTaskEvent(data); |
| 1746 | return isolate->heap()->undefined_value(); |
| 1747 | } |
| 1748 | |
| 1749 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1750 | RUNTIME_FUNCTION(Runtime_DebugIsActive) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1751 | SealHandleScope shs(isolate); |
| 1752 | return Smi::FromInt(isolate->debug()->is_active()); |
| 1753 | } |
| 1754 | |
| 1755 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1756 | RUNTIME_FUNCTION(Runtime_DebugBreakInOptimizedCode) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1757 | UNIMPLEMENTED(); |
| 1758 | return NULL; |
| 1759 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1760 | } // namespace internal |
| 1761 | } // namespace v8 |