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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/172833">172833</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2014-08-21 13:29:43 -0700 (Thu, 21 Aug 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>REGRESSION: CSS not() selector does not work when it appears after or within @supports
https://bugs.webkit.org/show_bug.cgi?id=136063
Patch by Yuki Sekiguchi <yuki.sekiguchi@access-company.com> on 2014-08-21
Reviewed by Darin Adler.
Source/WebCore:
CSSParser changes its m_parsingMode to SupportsMode when it finds
"@supports" token. However, the mode will be never changed to
NormalMode. This changes parsing algorithm for "not" token forever,
and it cannot parse not pseudo class selector.
When we finish parsing @supports rule, we should change to normal
mode.
@media does the same thing. This patch changed CharacterEndMediaQuery
to CharacterEndConditionQuery, and we change parsing mode from
SupportsMode to NormalMode when the parser finished to parse
@supports rule.
Like "@-webkit-mediaquery", we cannot use '{' to
"@-webkit-supports-condition". Changed "@-webkit-supports-condition"
parsing rule and parseSupportsCondition() not to use '{'.
Tests: css3/supports-not-selector-cssom.html
css3/supports-not-selector.html
* css/CSSGrammar.y.in:
* css/CSSParser.cpp:
(WebCore::CSSParser::parseSupportsCondition):
(WebCore::isCSSLetter):
(WebCore::CSSParser::realLex):
LayoutTests:
Test that @supports doesn't break "not" pseudo class selector.
* css3/supports-not-selector-cssom-expected.txt: Added.
* css3/supports-not-selector-cssom.html: Added.
* css3/supports-not-selector-expected.html: Added.
* css3/supports-not-selector.html: Added.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorecssCSSGrammaryin">trunk/Source/WebCore/css/CSSGrammar.y.in</a></li>
<li><a href="#trunkSourceWebCorecssCSSParsercpp">trunk/Source/WebCore/css/CSSParser.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestscss3supportsnotselectorcssomexpectedtxt">trunk/LayoutTests/css3/supports-not-selector-cssom-expected.txt</a></li>
<li><a href="#trunkLayoutTestscss3supportsnotselectorcssomhtml">trunk/LayoutTests/css3/supports-not-selector-cssom.html</a></li>
<li><a href="#trunkLayoutTestscss3supportsnotselectorexpectedhtml">trunk/LayoutTests/css3/supports-not-selector-expected.html</a></li>
<li><a href="#trunkLayoutTestscss3supportsnotselectorhtml">trunk/LayoutTests/css3/supports-not-selector.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (172832 => 172833)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2014-08-21 20:08:57 UTC (rev 172832)
+++ trunk/LayoutTests/ChangeLog 2014-08-21 20:29:43 UTC (rev 172833)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2014-08-21 Yuki Sekiguchi <yuki.sekiguchi@access-company.com>
+
+ REGRESSION: CSS not() selector does not work when it appears after or within @supports
+ https://bugs.webkit.org/show_bug.cgi?id=136063
+
+ Reviewed by Darin Adler.
+
+ Test that @supports doesn't break "not" pseudo class selector.
+
+ * css3/supports-not-selector-cssom-expected.txt: Added.
+ * css3/supports-not-selector-cssom.html: Added.
+ * css3/supports-not-selector-expected.html: Added.
+ * css3/supports-not-selector.html: Added.
+
</ins><span class="cx"> 2014-08-21 Beth Dakin <bdakin@apple.com>
</span><span class="cx">
</span><span class="cx"> overflow:scroll elements should support rubber-banding
</span></span></pre></div>
<a id="trunkLayoutTestscss3supportsnotselectorcssomexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/css3/supports-not-selector-cssom-expected.txt (0 => 172833)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/css3/supports-not-selector-cssom-expected.txt (rev 0)
+++ trunk/LayoutTests/css3/supports-not-selector-cssom-expected.txt 2014-08-21 20:29:43 UTC (rev 172833)
</span><span class="lines">@@ -0,0 +1,38 @@
</span><ins>+Test that @supports doesn't break 'not' pseudo class selector.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS CSSRule.SUPPORTS_RULE is defined.
+rules = document.styleSheets[1].cssRules
+PASS rules.length is 2
+PASS rules[0].type is CSSRule.SUPPORTS_RULE
+PASS rules[0].cssRules.length is 1
+PASS rules[0].cssRules[0].type is CSSRule.STYLE_RULE
+PASS rules[0].cssRules[0].style.color is "green"
+PASS rules[1].type is CSSRule.STYLE_RULE
+PASS rules[1].style.color is "green"
+rules = document.styleSheets[2].cssRules
+PASS rules.length is 2
+PASS rules[1].type is CSSRule.STYLE_RULE
+PASS rules[1].style.color is "green"
+rules = document.styleSheets[3].cssRules
+PASS rules.length is 1
+PASS rules[0].type is CSSRule.STYLE_RULE
+PASS rules[0].style.color is "green"
+Checks all elements are green.
+PASS getComputedStyle(result, null).color is "rgb(0, 128, 0)"
+PASS getComputedStyle(result, null).color is "rgb(0, 128, 0)"
+PASS getComputedStyle(result, null).color is "rgb(0, 128, 0)"
+PASS getComputedStyle(result, null).color is "rgb(0, 128, 0)"
+PASS getComputedStyle(result, null).color is "rgb(0, 128, 0)"
+PASS getComputedStyle(result, null).color is "rgb(0, 128, 0)"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+This should be green if not() pseudo class selector works inside @supports rule.
+This should be green if not() pseudo class selector works after/outside @supports rule.
+This should be green if not() pseudo class selector DOES NOT work inside @supports rule without condition.
+This should be green if not() pseudo class selector works after/outside @supports rule without condition.
+This should be green if not() pseudo class selector DOES NOT work after/outside @supports rule without rule.
+This should be green if not() pseudo class selector works after/outside @supports rule without condition and rule.
</ins></span></pre></div>
<a id="trunkLayoutTestscss3supportsnotselectorcssomhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/css3/supports-not-selector-cssom.html (0 => 172833)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/css3/supports-not-selector-cssom.html (rev 0)
+++ trunk/LayoutTests/css3/supports-not-selector-cssom.html 2014-08-21 20:29:43 UTC (rev 172833)
</span><span class="lines">@@ -0,0 +1,78 @@
</span><ins>+<!DOCTYPE html>
+<style>
+div { color: red; }
+</style>
+<style>
+@supports (display:block) {
+ div:not(.outside).valid { color: green; }
+}
+div:not(.inside).valid {
+ color:green;
+}
+</style>
+<style>
+div.nocondition.inside { color: green; }
+@supports {
+ div:not(.outside).nocondition { color: red; }
+}
+div:not(.inside).nocondition {
+ color:green;
+}
+</style>
+<style>
+div.norule.outside { color: green; }
+@supports (display:block)
+div:not(.inside).norule {
+ color:red;
+}
+</style>
+<style>
+@supports;
+div:not(.inside).semicolon {
+ color:green;
+}
+</style>
+<div class="result inside valid">This should be green if not() pseudo class selector works inside @supports rule.</div>
+<div class="result outside valid">This should be green if not() pseudo class selector works after/outside @supports rule.</div>
+
+<div class="result inside nocondition">This should be green if not() pseudo class selector DOES NOT work inside @supports rule without condition.</div>
+<div class="result outside nocondition">This should be green if not() pseudo class selector works after/outside @supports rule without condition.</div>
+
+<div class="result outside norule">This should be green if not() pseudo class selector DOES NOT work after/outside @supports rule without rule.</div>
+
+<div class="result outside semicolon">This should be green if not() pseudo class selector works after/outside @supports rule without condition and rule.</div>
+
+<script src="../resources/js-test-pre.js"></script>
+<script>
+ description("Test that @supports doesn't break 'not' pseudo class selector.");
+
+
+ shouldBeDefined("CSSRule.SUPPORTS_RULE");
+
+ evalAndLog("rules = document.styleSheets[1].cssRules");
+ shouldEvaluateTo("rules.length", 2);
+ shouldBe("rules[0].type", "CSSRule.SUPPORTS_RULE");
+ shouldEvaluateTo("rules[0].cssRules.length", 1);
+ shouldBe("rules[0].cssRules[0].type", "CSSRule.STYLE_RULE");
+ shouldBeEqualToString("rules[0].cssRules[0].style.color", "green");
+ shouldBe("rules[1].type", "CSSRule.STYLE_RULE");
+ shouldBeEqualToString("rules[1].style.color", "green");
+
+ evalAndLog("rules = document.styleSheets[2].cssRules");
+ shouldEvaluateTo("rules.length", 2);
+ shouldBe("rules[1].type", "CSSRule.STYLE_RULE");
+ shouldBeEqualToString("rules[1].style.color", "green");
+
+ evalAndLog("rules = document.styleSheets[3].cssRules");
+ shouldEvaluateTo("rules.length", 1);
+ shouldBe("rules[0].type", "CSSRule.STYLE_RULE");
+ shouldBeEqualToString("rules[0].style.color", "green");
+
+ debug("Checks all elements are green.");
+ var results = document.getElementsByClassName("result");
+ for (var i = 0; i < results.length; i++) {
+ var result = results[i];
+ shouldBeEqualToString("getComputedStyle(result, null).color", "rgb(0, 128, 0)");
+ }
+</script>
+<script src="../resources/js-test-post.js"></script>
</ins></span></pre></div>
<a id="trunkLayoutTestscss3supportsnotselectorexpectedhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/css3/supports-not-selector-expected.html (0 => 172833)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/css3/supports-not-selector-expected.html (rev 0)
+++ trunk/LayoutTests/css3/supports-not-selector-expected.html 2014-08-21 20:29:43 UTC (rev 172833)
</span><span class="lines">@@ -0,0 +1,13 @@
</span><ins>+<!DOCTYPE html>
+<style>
+div { color: green; }
+</style>
+<div>This should be green if not() pseudo class selector works inside @supports rule.</div>
+<div>This should be green if not() pseudo class selector works after/outside @supports rule.</div>
+
+<div>This should be green if not() pseudo class selector DOES NOT work inside @supports rule without condition.</div>
+<div>This should be green if not() pseudo class selector works after/outside @supports rule without condition.</div>
+
+<div>This should be green if not() pseudo class selector DOES NOT work after/outside @supports rule without rule.</div>
+
+<div>This should be green if not() pseudo class selector works after/outside @supports rule without condition and rule.</div>
</ins></span></pre></div>
<a id="trunkLayoutTestscss3supportsnotselectorhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/css3/supports-not-selector.html (0 => 172833)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/css3/supports-not-selector.html (rev 0)
+++ trunk/LayoutTests/css3/supports-not-selector.html 2014-08-21 20:29:43 UTC (rev 172833)
</span><span class="lines">@@ -0,0 +1,43 @@
</span><ins>+<!DOCTYPE html>
+<style>
+div { color: red; }
+</style>
+<style>
+@supports (display:block) {
+ div:not(.outside).valid { color: green; }
+}
+div:not(.inside).valid {
+ color:green;
+}
+</style>
+<style>
+div.nocondition.inside { color: green; }
+@supports {
+ div:not(.outside).nocondition { color: red; }
+}
+div:not(.inside).nocondition {
+ color:green;
+}
+</style>
+<style>
+div.norule.outside { color: green; }
+@supports (display:block)
+div:not(.inside).norule {
+ color:red;
+}
+</style>
+<style>
+@supports;
+div:not(.inside).semicolon {
+ color:green;
+}
+</style>
+<div class="inside valid">This should be green if not() pseudo class selector works inside @supports rule.</div>
+<div class="outside valid">This should be green if not() pseudo class selector works after/outside @supports rule.</div>
+
+<div class="inside nocondition">This should be green if not() pseudo class selector DOES NOT work inside @supports rule without condition.</div>
+<div class="outside nocondition">This should be green if not() pseudo class selector works after/outside @supports rule without condition.</div>
+
+<div class="outside norule">This should be green if not() pseudo class selector DOES NOT work after/outside @supports rule without rule.</div>
+
+<div class="outside semicolon">This should be green if not() pseudo class selector works after/outside @supports rule without condition and rule.</div>
</ins></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (172832 => 172833)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2014-08-21 20:08:57 UTC (rev 172832)
+++ trunk/Source/WebCore/ChangeLog 2014-08-21 20:29:43 UTC (rev 172833)
</span><span class="lines">@@ -1,3 +1,36 @@
</span><ins>+2014-08-21 Yuki Sekiguchi <yuki.sekiguchi@access-company.com>
+
+ REGRESSION: CSS not() selector does not work when it appears after or within @supports
+ https://bugs.webkit.org/show_bug.cgi?id=136063
+
+ Reviewed by Darin Adler.
+
+ CSSParser changes its m_parsingMode to SupportsMode when it finds
+ "@supports" token. However, the mode will be never changed to
+ NormalMode. This changes parsing algorithm for "not" token forever,
+ and it cannot parse not pseudo class selector.
+
+ When we finish parsing @supports rule, we should change to normal
+ mode.
+
+ @media does the same thing. This patch changed CharacterEndMediaQuery
+ to CharacterEndConditionQuery, and we change parsing mode from
+ SupportsMode to NormalMode when the parser finished to parse
+ @supports rule.
+
+ Like "@-webkit-mediaquery", we cannot use '{' to
+ "@-webkit-supports-condition". Changed "@-webkit-supports-condition"
+ parsing rule and parseSupportsCondition() not to use '{'.
+
+ Tests: css3/supports-not-selector-cssom.html
+ css3/supports-not-selector.html
+
+ * css/CSSGrammar.y.in:
+ * css/CSSParser.cpp:
+ (WebCore::CSSParser::parseSupportsCondition):
+ (WebCore::isCSSLetter):
+ (WebCore::CSSParser::realLex):
+
</ins><span class="cx"> 2014-08-21 Beth Dakin <bdakin@apple.com>
</span><span class="cx">
</span><span class="cx"> overflow:scroll elements should support rubber-banding
</span></span></pre></div>
<a id="trunkSourceWebCorecssCSSGrammaryin"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/CSSGrammar.y.in (172832 => 172833)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/CSSGrammar.y.in 2014-08-21 20:08:57 UTC (rev 172832)
+++ trunk/Source/WebCore/css/CSSGrammar.y.in 2014-08-21 20:29:43 UTC (rev 172833)
</span><span class="lines">@@ -391,7 +391,7 @@
</span><span class="cx">
</span><span class="cx"> #if ENABLE_CSS3_CONDITIONAL_RULES
</span><span class="cx">
</span><del>-webkit_supports_condition: WEBKIT_SUPPORTS_CONDITION_SYM '{' maybe_space supports_condition '}' { parser->m_supportsCondition = $4; } ;
</del><ins>+webkit_supports_condition: WEBKIT_SUPPORTS_CONDITION_SYM WHITESPACE maybe_space supports_condition '}' { parser->m_supportsCondition = $4; } ;
</ins><span class="cx">
</span><span class="cx"> #endif
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebCorecssCSSParsercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/CSSParser.cpp (172832 => 172833)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/CSSParser.cpp 2014-08-21 20:08:57 UTC (rev 172832)
+++ trunk/Source/WebCore/css/CSSParser.cpp 2014-08-21 20:29:43 UTC (rev 172833)
</span><span class="lines">@@ -471,7 +471,9 @@
</span><span class="cx"> bool CSSParser::parseSupportsCondition(const String& string)
</span><span class="cx"> {
</span><span class="cx"> m_supportsCondition = false;
</span><del>- setupParser("@-webkit-supports-condition{ ", string, "} ");
</del><ins>+ // can't use { because tokenizer state switches from supports to initial state when it sees { token.
+ // instead insert one " " (which is WHITESPACE in CSSGrammar.y)
+ setupParser("@-webkit-supports-condition ", string, "} ");
</ins><span class="cx"> cssyyparse(this);
</span><span class="cx"> return m_supportsCondition;
</span><span class="cx"> }
</span><span class="lines">@@ -9981,7 +9983,7 @@
</span><span class="cx"> CharacterOther,
</span><span class="cx"> CharacterNull,
</span><span class="cx"> CharacterWhiteSpace,
</span><del>- CharacterEndMediaQuery,
</del><ins>+ CharacterEndConditionQuery,
</ins><span class="cx"> CharacterEndNthChild,
</span><span class="cx"> CharacterQuote,
</span><span class="cx"> CharacterExclamationMark,
</span><span class="lines">@@ -10060,7 +10062,7 @@
</span><span class="cx"> /* 56 - 8 */ CharacterNumber,
</span><span class="cx"> /* 57 - 9 */ CharacterNumber,
</span><span class="cx"> /* 58 - : */ CharacterOther,
</span><del>-/* 59 - ; */ CharacterEndMediaQuery,
</del><ins>+/* 59 - ; */ CharacterEndConditionQuery,
</ins><span class="cx"> /* 60 - < */ CharacterLess,
</span><span class="cx"> /* 61 - = */ CharacterOther,
</span><span class="cx"> /* 62 - > */ CharacterOther,
</span><span class="lines">@@ -10124,7 +10126,7 @@
</span><span class="cx"> /* 120 - x */ CharacterIdentifierStart,
</span><span class="cx"> /* 121 - y */ CharacterIdentifierStart,
</span><span class="cx"> /* 122 - z */ CharacterIdentifierStart,
</span><del>-/* 123 - { */ CharacterEndMediaQuery,
</del><ins>+/* 123 - { */ CharacterEndConditionQuery,
</ins><span class="cx"> /* 124 - | */ CharacterVerticalBar,
</span><span class="cx"> /* 125 - } */ CharacterOther,
</span><span class="cx"> /* 126 - ~ */ CharacterTilde,
</span><span class="lines">@@ -11340,10 +11342,15 @@
</span><span class="cx"> } while (*currentCharacter<SrcCharacterType>() <= ' ' && (typesOfASCIICharacters[*currentCharacter<SrcCharacterType>()] == CharacterWhiteSpace));
</span><span class="cx"> break;
</span><span class="cx">
</span><del>- case CharacterEndMediaQuery:
- if (m_parsingMode == MediaQueryMode)
</del><ins>+ case CharacterEndConditionQuery: {
+ bool isParsingCondition = m_parsingMode == MediaQueryMode;
+#if ENABLE(CSS3_CONDITIONAL_RULES)
+ isParsingCondition = isParsingCondition || m_parsingMode == SupportsMode;
+#endif
+ if (isParsingCondition)
</ins><span class="cx"> m_parsingMode = NormalMode;
</span><span class="cx"> break;
</span><ins>+ }
</ins><span class="cx">
</span><span class="cx"> case CharacterEndNthChild:
</span><span class="cx"> if (m_parsingMode == NthChildMode)
</span></span></pre>
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