This is an automated email from the git hooks/post-receive script. x2go pushed a commit to branch upstream/28.5.0 in repository pale-moon. commit d9137b4b7ae446750713c48a48574465301e3699 Author: JustOff <Off.Just.Off@gmail.com> Date: Sat Apr 20 13:53:46 2019 +0300 Handle URL token in a closer way to the CSS3 spec --- devtools/shared/css/lexer.js | 21 +++++++++++++++++++++ devtools/shared/tests/unit/test_csslexer.js | 3 +-- .../css-parsing/invalid-url-handling.xhtml | 22 +++++++++++----------- layout/style/nsCSSScanner.cpp | 22 +++++++++++++++++++++- layout/style/test/test_csslexer.js | 3 +-- 5 files changed, 55 insertions(+), 16 deletions(-) diff --git a/devtools/shared/css/lexer.js b/devtools/shared/css/lexer.js index 9013b63..192fa95 100644 --- a/devtools/shared/css/lexer.js +++ b/devtools/shared/css/lexer.js @@ -1067,6 +1067,7 @@ Scanner.prototype = { // aToken.mIdent may be "url" at this point; clear that out aToken.mIdent.length = 0; + let hasString = false; let ch = this.Peek(); // Do we have a string? if (ch == QUOTATION_MARK || ch == APOSTROPHE) { @@ -1075,6 +1076,7 @@ Scanner.prototype = { aToken.mType = eCSSToken_Bad_URL; return; } + hasString = true; } else { // Otherwise, this is the start of a non-quoted url (which may be empty). aToken.mSymbol = 0; @@ -1093,6 +1095,25 @@ Scanner.prototype = { } } else { aToken.mType = eCSSToken_Bad_URL; + if (!hasString) { + // Consume until before the next right parenthesis, which follows + // how <bad-url-token> is consumed in CSS Syntax 3 spec. + // Note that, we only do this when "url(" is not followed by a + // string, because in the spec, "url(" followed by a string is + // handled as a url function rather than a <url-token>, so the + // rest of content before ")" should be consumed in balance, + // which will be done by the parser. + // The closing ")" is not consumed here. It is left to the parser + // so that the parser can handle both cases. + do { + if (IsVertSpace(ch)) { + this.AdvanceLine(); + } else { + this.Advance(); + } + ch = this.Peek(); + } while (ch >= 0 && ch != RIGHT_PARENTHESIS); + } } }, diff --git a/devtools/shared/tests/unit/test_csslexer.js b/devtools/shared/tests/unit/test_csslexer.js index 3585564..b2dfdf5 100644 --- a/devtools/shared/tests/unit/test_csslexer.js +++ b/devtools/shared/tests/unit/test_csslexer.js @@ -128,8 +128,7 @@ var LEX_TESTS = [ ["url:http://example.com"]], // In CSS Level 3, this is an ordinary URL, not a BAD_URL. ["url(http://example.com", ["url:http://example.com"]], - // See bug 1153981 to understand why this gets a SYMBOL token. - ["url(http://example.com @", ["bad_url:http://example.com", "symbol:@"]], + ["url(http://example.com @", ["bad_url:http://example.com"]], ["quo\\ting", ["ident:quoting"]], ["'bad string\n", ["bad_string:bad string", "whitespace"]], ["~=", ["includes"]], diff --git a/layout/reftests/css-parsing/invalid-url-handling.xhtml b/layout/reftests/css-parsing/invalid-url-handling.xhtml index da1709b..e6b85a8 100644 --- a/layout/reftests/css-parsing/invalid-url-handling.xhtml +++ b/layout/reftests/css-parsing/invalid-url-handling.xhtml @@ -22,17 +22,16 @@ #two { background-color: green; } </style> <style type="text/css"> - /* not a URI token; the unterminated string ends at end of line, so - the brace never matches */ - #three { background-color: green; } + /* not a URI token; bad-url token is consumed until the first closing ) */ #foo { background: url(foo"bar) } - #three { background-color: red; } + #three { background-color: green; } </style> <style type="text/css"> - /* not a URI token; the unterminated string ends at end of line */ + /* not a URI token; bad-url token is consumed until the first closing ) */ + #four { background-color: green; } #foo { background: url(foo"bar) } ) } - #four { background-color: green; } + #four { background-color: red; } </style> <style type="text/css"> /* not a URI token; the unterminated string ends at end of line, so @@ -68,18 +67,19 @@ #eleven { background: url([) green; } </style> <style type="text/css"> - /* not a URI token; brace matching should work only after invalid URI token */ - #twelve { background: url(}{""{)}); background-color: green; } + /* not a URI token; bad-url token is consumed until the first closing ) + so the brace immediately after it closes the declaration block */ + #twelve { background-color: green; } + #twelve { background: url(}{""{)}); background-color: red; } </style> <style type="text/css"> /* invalid URI token absorbs the [ */ #thirteen { background: url([""); background-color: green; } </style> <style type="text/css"> - /* not a URI token; the opening ( is never matched */ - #fourteen { background-color: green; } + /* not a URI token; bad-url token is consumed until the first closing ) */ #foo { background: url(() } - #fourteen { background-color: red; } + #fourteen { background-color: green; } </style> <!-- The next three tests test that invalid URI tokens absorb [ and { --> <style type="text/css"> diff --git a/layout/style/nsCSSScanner.cpp b/layout/style/nsCSSScanner.cpp index 771c893..2110be7 100644 --- a/layout/style/nsCSSScanner.cpp +++ b/layout/style/nsCSSScanner.cpp @@ -1164,6 +1164,7 @@ nsCSSScanner::NextURL(nsCSSToken& aToken) // aToken.mIdent may be "url" at this point; clear that out aToken.mIdent.Truncate(); + bool hasString = false; int32_t ch = Peek(); // Do we have a string? if (ch == '"' || ch == '\'') { @@ -1173,7 +1174,7 @@ nsCSSScanner::NextURL(nsCSSToken& aToken) return; } MOZ_ASSERT(aToken.mType == eCSSToken_String, "unexpected token type"); - + hasString = true; } else { // Otherwise, this is the start of a non-quoted url (which may be empty). aToken.mSymbol = char16_t(0); @@ -1193,6 +1194,25 @@ nsCSSScanner::NextURL(nsCSSToken& aToken) } else { mSeenBadToken = true; aToken.mType = eCSSToken_Bad_URL; + if (!hasString) { + // Consume until before the next right parenthesis, which follows + // how <bad-url-token> is consumed in CSS Syntax 3 spec. + // Note that, we only do this when "url(" is not followed by a + // string, because in the spec, "url(" followed by a string is + // handled as a url function rather than a <url-token>, so the + // rest of content before ")" should be consumed in balance, + // which will be done by the parser. + // The closing ")" is not consumed here. It is left to the parser + // so that the parser can handle both cases. + do { + if (IsVertSpace(ch)) { + AdvanceLine(); + } else { + Advance(); + } + ch = Peek(); + } while (ch >= 0 && ch != ')'); + } } } diff --git a/layout/style/test/test_csslexer.js b/layout/style/test/test_csslexer.js index a71c02d..4ba3b9c 100644 --- a/layout/style/test/test_csslexer.js +++ b/layout/style/test/test_csslexer.js @@ -55,8 +55,7 @@ var LEX_TESTS = [ ["url:http://example.com"]], // In CSS Level 3, this is an ordinary URL, not a BAD_URL. ["url(http://example.com", ["url:http://example.com"]], - // See bug 1153981 to understand why this gets a SYMBOL token. - ["url(http://example.com @", ["bad_url:http://example.com", "symbol:@"]], + ["url(http://example.com @", ["bad_url:http://example.com"]], ["quo\\ting", ["ident:quoting"]], ["'bad string\n", ["bad_string:bad string", "whitespace"]], ["~=", ["includes"]], -- Alioth's /home/x2go-admin/maintenancescripts/git/hooks/post-receive-email on /srv/git/code.x2go.org/pale-moon.git