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Side by Side Diff: Source/core/html/parser/HTMLScriptRunner.cpp

Issue 153813002: Support "await a stable state" and "provide a stable state" (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: assert more Created 6 years, 10 months ago
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1 /* 1 /*
2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. 2 * Copyright (C) 2010 Google, Inc. All Rights Reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
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21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */ 24 */
25 25
26 #include "config.h" 26 #include "config.h"
27 #include "core/html/parser/HTMLScriptRunner.h" 27 #include "core/html/parser/HTMLScriptRunner.h"
28 28
29 #include "bindings/v8/ScriptSourceCode.h" 29 #include "bindings/v8/ScriptSourceCode.h"
30 #include "core/dom/Element.h" 30 #include "core/dom/Element.h"
31 #include "core/events/Event.h"
32 #include "core/dom/IgnoreDestructiveWriteCountIncrementer.h" 31 #include "core/dom/IgnoreDestructiveWriteCountIncrementer.h"
33 #include "core/dom/Microtask.h" 32 #include "core/dom/Microtask.h"
34 #include "core/dom/ScriptLoader.h" 33 #include "core/dom/ScriptLoader.h"
34 #include "core/events/Event.h"
35 #include "core/fetch/ScriptResource.h" 35 #include "core/fetch/ScriptResource.h"
36 #include "core/frame/Frame.h"
37 #include "core/html/StableState.h"
36 #include "core/html/parser/HTMLInputStream.h" 38 #include "core/html/parser/HTMLInputStream.h"
37 #include "core/html/parser/HTMLScriptRunnerHost.h" 39 #include "core/html/parser/HTMLScriptRunnerHost.h"
38 #include "core/html/parser/NestingLevelIncrementer.h" 40 #include "core/html/parser/NestingLevelIncrementer.h"
39 #include "core/frame/Frame.h"
40 #include "platform/NotImplemented.h" 41 #include "platform/NotImplemented.h"
41 42
42 namespace WebCore { 43 namespace WebCore {
43 44
44 using namespace HTMLNames; 45 using namespace HTMLNames;
45 46
46 HTMLScriptRunner::HTMLScriptRunner(Document* document, HTMLScriptRunnerHost* hos t) 47 HTMLScriptRunner::HTMLScriptRunner(Document* document, HTMLScriptRunnerHost* hos t)
47 : m_document(document) 48 : m_document(document)
48 , m_host(host) 49 , m_host(host)
49 , m_scriptNestingLevel(0) 50 , m_scriptNestingLevel(0)
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280 281
281 // This contains both and ASSERTION and a null check since we should not 282 // This contains both and ASSERTION and a null check since we should not
282 // be getting into the case of a null script element, but seem to be fro m 283 // be getting into the case of a null script element, but seem to be fro m
283 // time to time. The assertion is left in to help find those cases and 284 // time to time. The assertion is left in to help find those cases and
284 // is being tracked by <https://bugs.webkit.org/show_bug.cgi?id=60559>. 285 // is being tracked by <https://bugs.webkit.org/show_bug.cgi?id=60559>.
285 ASSERT(scriptLoader); 286 ASSERT(scriptLoader);
286 if (!scriptLoader) 287 if (!scriptLoader)
287 return; 288 return;
288 289
289 Microtask::performCheckpoint(); 290 Microtask::performCheckpoint();
291 StableState::provide();
290 292
291 InsertionPointRecord insertionPointRecord(m_host->inputStream()); 293 InsertionPointRecord insertionPointRecord(m_host->inputStream());
292 NestingLevelIncrementer nestingLevelIncrementer(m_scriptNestingLevel); 294 NestingLevelIncrementer nestingLevelIncrementer(m_scriptNestingLevel);
293 295
294 scriptLoader->prepareScript(scriptStartPosition); 296 scriptLoader->prepareScript(scriptStartPosition);
295 297
296 if (!scriptLoader->willBeParserExecuted()) 298 if (!scriptLoader->willBeParserExecuted())
297 return; 299 return;
298 300
299 if (scriptLoader->willExecuteWhenDocumentFinishedParsing()) { 301 if (scriptLoader->willExecuteWhenDocumentFinishedParsing()) {
300 requestDeferredScript(script); 302 requestDeferredScript(script);
301 } else if (scriptLoader->readyToBeParserExecuted()) { 303 } else if (scriptLoader->readyToBeParserExecuted()) {
302 if (m_scriptNestingLevel == 1) { 304 if (m_scriptNestingLevel == 1) {
303 m_parserBlockingScript.setElement(script); 305 m_parserBlockingScript.setElement(script);
304 m_parserBlockingScript.setStartingPosition(scriptStartPosition); 306 m_parserBlockingScript.setStartingPosition(scriptStartPosition);
305 } else { 307 } else {
306 ScriptSourceCode sourceCode(script->textContent(), documentURLFo rScriptExecution(m_document), scriptStartPosition); 308 ScriptSourceCode sourceCode(script->textContent(), documentURLFo rScriptExecution(m_document), scriptStartPosition);
307 scriptLoader->executeScript(sourceCode); 309 scriptLoader->executeScript(sourceCode);
308 } 310 }
309 } else { 311 } else {
310 requestParsingBlockingScript(script); 312 requestParsingBlockingScript(script);
311 } 313 }
312 } 314 }
313 } 315 }
314 316
315 } 317 }
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