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| 1 /* | |
| 2 * Copyright (C) 2010 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 (function () { | |
| 32 | |
| 33 var DebuggerScript = {}; | |
| 34 | |
| 35 DebuggerScript.PauseOnExceptionsState = { | |
| 36 DontPauseOnExceptions: 0, | |
| 37 PauseOnAllExceptions: 1, | |
| 38 PauseOnUncaughtExceptions: 2 | |
| 39 }; | |
| 40 | |
| 41 DebuggerScript.ScopeInfoDetails = { | |
| 42 AllScopes: 0, | |
| 43 FastAsyncScopes: 1, | |
| 44 NoScopes: 2 | |
| 45 }; | |
| 46 | |
| 47 DebuggerScript._pauseOnExceptionsState = DebuggerScript.PauseOnExceptionsState.D
ontPauseOnExceptions; | |
| 48 Debug.clearBreakOnException(); | |
| 49 Debug.clearBreakOnUncaughtException(); | |
| 50 | |
| 51 DebuggerScript.getAfterCompileScript = function(eventData) | |
| 52 { | |
| 53 return DebuggerScript._formatScript(eventData.script_.script_); | |
| 54 } | |
| 55 | |
| 56 DebuggerScript.getWorkerScripts = function() | |
| 57 { | |
| 58 var result = []; | |
| 59 var scripts = Debug.scripts(); | |
| 60 for (var i = 0; i < scripts.length; ++i) { | |
| 61 var script = scripts[i]; | |
| 62 // Workers don't share same V8 heap now so there is no need to complicat
e stuff with | |
| 63 // the context id like we do to discriminate between scripts from differ
ent pages. | |
| 64 // However we need to filter out v8 native scripts. | |
| 65 if (script.context_data && script.context_data === "worker") | |
| 66 result.push(DebuggerScript._formatScript(script)); | |
| 67 } | |
| 68 return result; | |
| 69 } | |
| 70 | |
| 71 DebuggerScript.getFunctionScopes = function(fun) | |
| 72 { | |
| 73 var mirror = MakeMirror(fun); | |
| 74 var count = mirror.scopeCount(); | |
| 75 if (count == 0) | |
| 76 return null; | |
| 77 var result = []; | |
| 78 for (var i = 0; i < count; i++) { | |
| 79 var scopeDetails = mirror.scope(i).details(); | |
| 80 result[i] = { | |
| 81 type: scopeDetails.type(), | |
| 82 object: DebuggerScript._buildScopeObject(scopeDetails.type(), scopeD
etails.object()) | |
| 83 }; | |
| 84 } | |
| 85 return result; | |
| 86 } | |
| 87 | |
| 88 DebuggerScript.getInternalProperties = function(value) | |
| 89 { | |
| 90 var properties = ObjectMirror.GetInternalProperties(value); | |
| 91 var result = []; | |
| 92 for (var i = 0; i < properties.length; i++) { | |
| 93 var mirror = properties[i]; | |
| 94 result.push({ | |
| 95 name: mirror.name(), | |
| 96 value: mirror.value().value() | |
| 97 }); | |
| 98 } | |
| 99 return result; | |
| 100 } | |
| 101 | |
| 102 DebuggerScript.setFunctionVariableValue = function(functionValue, scopeIndex, va
riableName, newValue) | |
| 103 { | |
| 104 var mirror = MakeMirror(functionValue); | |
| 105 if (!mirror.isFunction()) | |
| 106 throw new Error("Function value has incorrect type"); | |
| 107 return DebuggerScript._setScopeVariableValue(mirror, scopeIndex, variableNam
e, newValue); | |
| 108 } | |
| 109 | |
| 110 DebuggerScript._setScopeVariableValue = function(scopeHolder, scopeIndex, variab
leName, newValue) | |
| 111 { | |
| 112 var scopeMirror = scopeHolder.scope(scopeIndex); | |
| 113 if (!scopeMirror) | |
| 114 throw new Error("Incorrect scope index"); | |
| 115 scopeMirror.setVariableValue(variableName, newValue); | |
| 116 return undefined; | |
| 117 } | |
| 118 | |
| 119 DebuggerScript.getScripts = function(contextData) | |
| 120 { | |
| 121 var result = []; | |
| 122 | |
| 123 if (!contextData) | |
| 124 return result; | |
| 125 var comma = contextData.indexOf(","); | |
| 126 if (comma === -1) | |
| 127 return result; | |
| 128 // Context data is a string in the following format: | |
| 129 // ("page"|"injected")","<page id> | |
| 130 var idSuffix = contextData.substring(comma); // including the comma | |
| 131 | |
| 132 var scripts = Debug.scripts(); | |
| 133 for (var i = 0; i < scripts.length; ++i) { | |
| 134 var script = scripts[i]; | |
| 135 if (script.context_data && script.context_data.lastIndexOf(idSuffix) !=
-1) | |
| 136 result.push(DebuggerScript._formatScript(script)); | |
| 137 } | |
| 138 return result; | |
| 139 } | |
| 140 | |
| 141 DebuggerScript._formatScript = function(script) | |
| 142 { | |
| 143 var lineEnds = script.line_ends; | |
| 144 var lineCount = lineEnds.length; | |
| 145 var endLine = script.line_offset + lineCount - 1; | |
| 146 var endColumn; | |
| 147 // V8 will not count last line if script source ends with \n. | |
| 148 if (script.source[script.source.length - 1] === '\n') { | |
| 149 endLine += 1; | |
| 150 endColumn = 0; | |
| 151 } else { | |
| 152 if (lineCount === 1) | |
| 153 endColumn = script.source.length + script.column_offset; | |
| 154 else | |
| 155 endColumn = script.source.length - (lineEnds[lineCount - 2] + 1); | |
| 156 } | |
| 157 | |
| 158 return { | |
| 159 id: script.id, | |
| 160 name: script.nameOrSourceURL(), | |
| 161 source: script.source, | |
| 162 startLine: script.line_offset, | |
| 163 startColumn: script.column_offset, | |
| 164 endLine: endLine, | |
| 165 endColumn: endColumn, | |
| 166 isContentScript: !!script.context_data && script.context_data.indexOf("i
njected") == 0 | |
| 167 }; | |
| 168 } | |
| 169 | |
| 170 DebuggerScript.setBreakpoint = function(execState, info) | |
| 171 { | |
| 172 var positionAlignment = info.interstatementLocation ? Debug.BreakPositionAli
gnment.BreakPosition : Debug.BreakPositionAlignment.Statement; | |
| 173 var breakId = Debug.setScriptBreakPointById(info.sourceID, info.lineNumber,
info.columnNumber, info.condition, undefined, positionAlignment); | |
| 174 | |
| 175 var locations = Debug.findBreakPointActualLocations(breakId); | |
| 176 if (!locations.length) | |
| 177 return undefined; | |
| 178 info.lineNumber = locations[0].line; | |
| 179 info.columnNumber = locations[0].column; | |
| 180 return breakId.toString(); | |
| 181 } | |
| 182 | |
| 183 DebuggerScript.removeBreakpoint = function(execState, info) | |
| 184 { | |
| 185 Debug.findBreakPoint(info.breakpointId, true); | |
| 186 } | |
| 187 | |
| 188 DebuggerScript.pauseOnExceptionsState = function() | |
| 189 { | |
| 190 return DebuggerScript._pauseOnExceptionsState; | |
| 191 } | |
| 192 | |
| 193 DebuggerScript.setPauseOnExceptionsState = function(newState) | |
| 194 { | |
| 195 DebuggerScript._pauseOnExceptionsState = newState; | |
| 196 | |
| 197 if (DebuggerScript.PauseOnExceptionsState.PauseOnAllExceptions === newState) | |
| 198 Debug.setBreakOnException(); | |
| 199 else | |
| 200 Debug.clearBreakOnException(); | |
| 201 | |
| 202 if (DebuggerScript.PauseOnExceptionsState.PauseOnUncaughtExceptions === newS
tate) | |
| 203 Debug.setBreakOnUncaughtException(); | |
| 204 else | |
| 205 Debug.clearBreakOnUncaughtException(); | |
| 206 } | |
| 207 | |
| 208 DebuggerScript.frameCount = function(execState) | |
| 209 { | |
| 210 return execState.frameCount(); | |
| 211 } | |
| 212 | |
| 213 DebuggerScript.currentCallFrame = function(execState, data) | |
| 214 { | |
| 215 var maximumLimit = data >> 2; | |
| 216 var scopeDetailsLevel = data & 3; | |
| 217 | |
| 218 var frameCount = execState.frameCount(); | |
| 219 if (maximumLimit && maximumLimit < frameCount) | |
| 220 frameCount = maximumLimit; | |
| 221 var topFrame = undefined; | |
| 222 for (var i = frameCount - 1; i >= 0; i--) { | |
| 223 var frameMirror = execState.frame(i); | |
| 224 topFrame = DebuggerScript._frameMirrorToJSCallFrame(frameMirror, topFram
e, scopeDetailsLevel); | |
| 225 } | |
| 226 return topFrame; | |
| 227 } | |
| 228 | |
| 229 DebuggerScript.stepIntoStatement = function(execState) | |
| 230 { | |
| 231 execState.prepareStep(Debug.StepAction.StepIn, 1); | |
| 232 } | |
| 233 | |
| 234 DebuggerScript.stepOverStatement = function(execState, callFrame) | |
| 235 { | |
| 236 execState.prepareStep(Debug.StepAction.StepNext, 1); | |
| 237 } | |
| 238 | |
| 239 DebuggerScript.stepOutOfFunction = function(execState, callFrame) | |
| 240 { | |
| 241 execState.prepareStep(Debug.StepAction.StepOut, 1); | |
| 242 } | |
| 243 | |
| 244 // Returns array in form: | |
| 245 // [ 0, <v8_result_report> ] in case of success | |
| 246 // or [ 1, <general_error_message>, <compiler_message>, <line_number>, <column
_number> ] in case of compile error, numbers are 1-based. | |
| 247 // or throws exception with message. | |
| 248 DebuggerScript.liveEditScriptSource = function(scriptId, newSource, preview) | |
| 249 { | |
| 250 var scripts = Debug.scripts(); | |
| 251 var scriptToEdit = null; | |
| 252 for (var i = 0; i < scripts.length; i++) { | |
| 253 if (scripts[i].id == scriptId) { | |
| 254 scriptToEdit = scripts[i]; | |
| 255 break; | |
| 256 } | |
| 257 } | |
| 258 if (!scriptToEdit) | |
| 259 throw("Script not found"); | |
| 260 | |
| 261 var changeLog = []; | |
| 262 try { | |
| 263 var result = Debug.LiveEdit.SetScriptSource(scriptToEdit, newSource, pre
view, changeLog); | |
| 264 return [0, result]; | |
| 265 } catch (e) { | |
| 266 if (e instanceof Debug.LiveEdit.Failure && "details" in e) { | |
| 267 var details = e.details; | |
| 268 if (details.type === "liveedit_compile_error") { | |
| 269 var startPosition = details.position.start; | |
| 270 return [1, String(e), String(details.syntaxErrorMessage), Number
(startPosition.line), Number(startPosition.column)]; | |
| 271 } | |
| 272 } | |
| 273 throw e; | |
| 274 } | |
| 275 } | |
| 276 | |
| 277 DebuggerScript.clearBreakpoints = function(execState, info) | |
| 278 { | |
| 279 Debug.clearAllBreakPoints(); | |
| 280 } | |
| 281 | |
| 282 DebuggerScript.setBreakpointsActivated = function(execState, info) | |
| 283 { | |
| 284 Debug.debuggerFlags().breakPointsActive.setValue(info.enabled); | |
| 285 } | |
| 286 | |
| 287 DebuggerScript.getScriptSource = function(eventData) | |
| 288 { | |
| 289 return eventData.script().source(); | |
| 290 } | |
| 291 | |
| 292 DebuggerScript.setScriptSource = function(eventData, source) | |
| 293 { | |
| 294 if (eventData.script().data() === "injected-script") | |
| 295 return; | |
| 296 eventData.script().setSource(source); | |
| 297 } | |
| 298 | |
| 299 DebuggerScript.getScriptName = function(eventData) | |
| 300 { | |
| 301 return eventData.script().script_.nameOrSourceURL(); | |
| 302 } | |
| 303 | |
| 304 DebuggerScript.getBreakpointNumbers = function(eventData) | |
| 305 { | |
| 306 var breakpoints = eventData.breakPointsHit(); | |
| 307 var numbers = []; | |
| 308 if (!breakpoints) | |
| 309 return numbers; | |
| 310 | |
| 311 for (var i = 0; i < breakpoints.length; i++) { | |
| 312 var breakpoint = breakpoints[i]; | |
| 313 var scriptBreakPoint = breakpoint.script_break_point(); | |
| 314 numbers.push(scriptBreakPoint ? scriptBreakPoint.number() : breakpoint.n
umber()); | |
| 315 } | |
| 316 return numbers; | |
| 317 } | |
| 318 | |
| 319 DebuggerScript.isEvalCompilation = function(eventData) | |
| 320 { | |
| 321 var script = eventData.script(); | |
| 322 return (script.compilationType() === Debug.ScriptCompilationType.Eval); | |
| 323 } | |
| 324 | |
| 325 // NOTE: This function is performance critical, as it can be run on every | |
| 326 // statement that generates an async event (like addEventListener) to support | |
| 327 // asynchronous call stacks. Thus, when possible, initialize the data lazily. | |
| 328 DebuggerScript._frameMirrorToJSCallFrame = function(frameMirror, callerFrame, sc
opeDetailsLevel) | |
| 329 { | |
| 330 // Stuff that can not be initialized lazily (i.e. valid while paused with a
valid break_id). | |
| 331 // The frameMirror and scopeMirror can be accessed only while paused on the
debugger. | |
| 332 var frameDetails = frameMirror.details(); | |
| 333 | |
| 334 var funcObject = frameDetails.func(); | |
| 335 var sourcePosition = frameDetails.sourcePosition(); | |
| 336 var thisObject = frameDetails.receiver(); | |
| 337 | |
| 338 var isAtReturn = !!frameDetails.isAtReturn(); | |
| 339 var returnValue = isAtReturn ? frameDetails.returnValue() : undefined; | |
| 340 | |
| 341 var scopeMirrors = (scopeDetailsLevel === DebuggerScript.ScopeInfoDetails.No
Scopes ? [] : frameMirror.allScopes(scopeDetailsLevel === DebuggerScript.ScopeIn
foDetails.FastAsyncScopes)); | |
| 342 var scopeTypes = new Array(scopeMirrors.length); | |
| 343 var scopeObjects = new Array(scopeMirrors.length); | |
| 344 for (var i = 0; i < scopeMirrors.length; ++i) { | |
| 345 var scopeDetails = scopeMirrors[i].details(); | |
| 346 scopeTypes[i] = scopeDetails.type(); | |
| 347 scopeObjects[i] = scopeDetails.object(); | |
| 348 } | |
| 349 | |
| 350 // Calculated lazily. | |
| 351 var scopeChain; | |
| 352 var funcMirror; | |
| 353 var location; | |
| 354 | |
| 355 function lazyScopeChain() | |
| 356 { | |
| 357 if (!scopeChain) { | |
| 358 scopeChain = []; | |
| 359 for (var i = 0; i < scopeObjects.length; ++i) | |
| 360 scopeChain.push(DebuggerScript._buildScopeObject(scopeTypes[i],
scopeObjects[i])); | |
| 361 scopeObjects = null; // Free for GC. | |
| 362 } | |
| 363 return scopeChain; | |
| 364 } | |
| 365 | |
| 366 function ensureFuncMirror() | |
| 367 { | |
| 368 if (!funcMirror) { | |
| 369 funcMirror = MakeMirror(funcObject); | |
| 370 if (!funcMirror.isFunction()) | |
| 371 funcMirror = new UnresolvedFunctionMirror(funcObject); | |
| 372 } | |
| 373 return funcMirror; | |
| 374 } | |
| 375 | |
| 376 function ensureLocation() | |
| 377 { | |
| 378 if (!location) { | |
| 379 var script = ensureFuncMirror().script(); | |
| 380 if (script) | |
| 381 location = script.locationFromPosition(sourcePosition, true); | |
| 382 if (!location) | |
| 383 location = { line: 0, column: 0 }; | |
| 384 } | |
| 385 return location; | |
| 386 } | |
| 387 | |
| 388 function line() | |
| 389 { | |
| 390 return ensureLocation().line; | |
| 391 } | |
| 392 | |
| 393 function column() | |
| 394 { | |
| 395 return ensureLocation().column; | |
| 396 } | |
| 397 | |
| 398 function sourceID() | |
| 399 { | |
| 400 var script = ensureFuncMirror().script(); | |
| 401 return script && script.id(); | |
| 402 } | |
| 403 | |
| 404 function functionName() | |
| 405 { | |
| 406 var func = ensureFuncMirror(); | |
| 407 if (!func.resolved()) | |
| 408 return undefined; | |
| 409 var displayName; | |
| 410 var valueMirror = func.property("displayName").value(); | |
| 411 if (valueMirror && valueMirror.isString()) | |
| 412 displayName = valueMirror.value(); | |
| 413 return displayName || func.name() || func.inferredName(); | |
| 414 } | |
| 415 | |
| 416 function evaluate(expression) | |
| 417 { | |
| 418 return frameMirror.evaluate(expression, false).value(); | |
| 419 } | |
| 420 | |
| 421 function restart() | |
| 422 { | |
| 423 return Debug.LiveEdit.RestartFrame(frameMirror); | |
| 424 } | |
| 425 | |
| 426 function setVariableValue(scopeNumber, variableName, newValue) | |
| 427 { | |
| 428 return DebuggerScript._setScopeVariableValue(frameMirror, scopeNumber, v
ariableName, newValue); | |
| 429 } | |
| 430 | |
| 431 function stepInPositions() | |
| 432 { | |
| 433 var stepInPositionsV8 = frameMirror.stepInPositions(); | |
| 434 var stepInPositionsProtocol; | |
| 435 if (stepInPositionsV8) { | |
| 436 stepInPositionsProtocol = []; | |
| 437 var script = ensureFuncMirror().script(); | |
| 438 if (script) { | |
| 439 var scriptId = String(script.id()); | |
| 440 for (var i = 0; i < stepInPositionsV8.length; i++) { | |
| 441 var item = { | |
| 442 scriptId: scriptId, | |
| 443 lineNumber: stepInPositionsV8[i].position.line, | |
| 444 columnNumber: stepInPositionsV8[i].position.column | |
| 445 }; | |
| 446 stepInPositionsProtocol.push(item); | |
| 447 } | |
| 448 } | |
| 449 } | |
| 450 return JSON.stringify(stepInPositionsProtocol); | |
| 451 } | |
| 452 | |
| 453 return { | |
| 454 "sourceID": sourceID, | |
| 455 "line": line, | |
| 456 "column": column, | |
| 457 "functionName": functionName, | |
| 458 "thisObject": thisObject, | |
| 459 "scopeChain": lazyScopeChain, | |
| 460 "scopeType": scopeTypes, | |
| 461 "evaluate": evaluate, | |
| 462 "caller": callerFrame, | |
| 463 "restart": restart, | |
| 464 "setVariableValue": setVariableValue, | |
| 465 "stepInPositions": stepInPositions, | |
| 466 "isAtReturn": isAtReturn, | |
| 467 "returnValue": returnValue | |
| 468 }; | |
| 469 } | |
| 470 | |
| 471 DebuggerScript._buildScopeObject = function(scopeType, scopeObject) | |
| 472 { | |
| 473 var result; | |
| 474 switch (scopeType) { | |
| 475 case ScopeType.Local: | |
| 476 case ScopeType.Closure: | |
| 477 case ScopeType.Catch: | |
| 478 // For transient objects we create a "persistent" copy that contains | |
| 479 // the same properties. | |
| 480 // Reset scope object prototype to null so that the proto properties | |
| 481 // don't appear in the local scope section. | |
| 482 result = { __proto__: null }; | |
| 483 var properties = MakeMirror(scopeObject, true /* transient */).propertie
s(); | |
| 484 for (var j = 0; j < properties.length; j++) { | |
| 485 var name = properties[j].name(); | |
| 486 if (name.charAt(0) === ".") | |
| 487 continue; // Skip internal variables like ".arguments" | |
| 488 result[name] = properties[j].value_; | |
| 489 } | |
| 490 break; | |
| 491 case ScopeType.Global: | |
| 492 case ScopeType.With: | |
| 493 result = scopeObject; | |
| 494 break; | |
| 495 case ScopeType.Block: | |
| 496 // Unsupported yet. Mustn't be reachable. | |
| 497 break; | |
| 498 } | |
| 499 return result; | |
| 500 } | |
| 501 | |
| 502 // We never resolve Mirror by its handle so to avoid memory leaks caused by Mirr
ors in the cache we disable it. | |
| 503 ToggleMirrorCache(false); | |
| 504 | |
| 505 return DebuggerScript; | |
| 506 })(); | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 351423002:
Moved files under Source/bindings/v8 to Source/bindings/core/v8. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk