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Diffstat (limited to 'WebCore/css/CSSGrammar.y')
| -rw-r--r-- | WebCore/css/CSSGrammar.y | 1493 |
1 files changed, 1493 insertions, 0 deletions
diff --git a/WebCore/css/CSSGrammar.y b/WebCore/css/CSSGrammar.y new file mode 100644 index 0000000..f6b0c17 --- /dev/null +++ b/WebCore/css/CSSGrammar.y @@ -0,0 +1,1493 @@ +%{ + +/* + * Copyright (C) 2002-2003 Lars Knoll (knoll@kde.org) + * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. + * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com) + * Copyright (C) 2008 Eric Seidel <eric@webkit.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#include "config.h" + +#include "CSSMediaRule.h" +#include "CSSParser.h" +#include "CSSPropertyNames.h" +#include "CSSRuleList.h" +#include "CSSSelector.h" +#include "CSSNthSelector.h" +#include "CSSStyleSheet.h" +#include "Document.h" +#include "HTMLNames.h" +#include "MediaList.h" +#include "WebKitCSSKeyframeRule.h" +#include "WebKitCSSKeyframesRule.h" +#include <stdlib.h> +#include <string.h> + +using namespace WebCore; +using namespace HTMLNames; + +#define YYENABLE_NLS 0 +#define YYLTYPE_IS_TRIVIAL 1 +#define YYMAXDEPTH 10000 +#define YYDEBUG 0 + +// FIXME: Replace with %parse-param { CSSParser* parser } once we can depend on bison 2.x +#define YYPARSE_PARAM parser +#define YYLEX_PARAM parser + +%} + +%pure_parser + +%union { + bool boolean; + char character; + int integer; + double number; + CSSParserString string; + + CSSRule* rule; + CSSRuleList* ruleList; + CSSSelector* selector; + CSSSelector::Relation relation; + MediaList* mediaList; + MediaQuery* mediaQuery; + MediaQuery::Restrictor mediaQueryRestrictor; + MediaQueryExp* mediaQueryExp; + CSSParserValue value; + CSSParserValueList* valueList; + Vector<MediaQueryExp*>* mediaQueryExpList; + WebKitCSSKeyframeRule* keyframeRule; + WebKitCSSKeyframesRule* keyframesRule; + float val; +} + +%{ + +static inline int cssyyerror(const char*) +{ + return 1; +} + +static int cssyylex(YYSTYPE* yylval, void* parser) +{ + return static_cast<CSSParser*>(parser)->lex(yylval); +} + +%} + +%expect 48 + +%left UNIMPORTANT_TOK + +%token WHITESPACE SGML_CD +%token TOKEN_EOF 0 + +%token INCLUDES +%token DASHMATCH +%token BEGINSWITH +%token ENDSWITH +%token CONTAINS + +%token <string> STRING +%right <string> IDENT +%token <string> NTH + +%nonassoc <string> HEX +%nonassoc <string> IDSEL +%nonassoc ':' +%nonassoc '.' +%nonassoc '[' +%nonassoc <string> '*' +%nonassoc error +%left '|' + +%token IMPORT_SYM +%token PAGE_SYM +%token MEDIA_SYM +%token FONT_FACE_SYM +%token CHARSET_SYM +%token NAMESPACE_SYM +%token WEBKIT_RULE_SYM +%token WEBKIT_DECLS_SYM +%token WEBKIT_KEYFRAME_RULE_SYM +%token WEBKIT_KEYFRAMES_SYM +%token WEBKIT_VALUE_SYM +%token WEBKIT_MEDIAQUERY_SYM +%token WEBKIT_SELECTOR_SYM +%token WEBKIT_VARIABLES_SYM +%token WEBKIT_DEFINE_SYM +%token VARIABLES_FOR +%token WEBKIT_VARIABLES_DECLS_SYM +%token ATKEYWORD + +%token IMPORTANT_SYM +%token MEDIA_ONLY +%token MEDIA_NOT +%token MEDIA_AND + +%token <number> QEMS +%token <number> EMS +%token <number> EXS +%token <number> PXS +%token <number> CMS +%token <number> MMS +%token <number> INS +%token <number> PTS +%token <number> PCS +%token <number> DEGS +%token <number> RADS +%token <number> GRADS +%token <number> MSECS +%token <number> SECS +%token <number> HERZ +%token <number> KHERZ +%token <string> DIMEN +%token <number> PERCENTAGE +%token <number> FLOATTOKEN +%token <number> INTEGER + +%token <string> URI +%token <string> FUNCTION +%token <string> NOTFUNCTION + +%token <string> UNICODERANGE + +%token <string> VARCALL + +%type <relation> combinator + +%type <rule> charset +%type <rule> ruleset +%type <rule> valid_rule_or_import +%type <rule> media +%type <rule> import +%type <rule> page +%type <rule> font_face +%type <rule> keyframes +%type <rule> invalid_rule +%type <rule> save_block +%type <rule> invalid_at +%type <rule> invalid_at_list +%type <rule> invalid_import +%type <rule> invalid_media +%type <rule> rule +%type <rule> valid_rule +%type <ruleList> block_rule_list +%type <rule> block_rule +%type <rule> block_valid_rule +%type <rule> variables_rule +%type <mediaList> variables_media_list + +%type <string> maybe_ns_prefix + +%type <string> namespace_selector + +%type <string> string_or_uri +%type <string> ident_or_string +%type <string> medium +%type <string> hexcolor + +%type <string> media_feature +%type <mediaList> media_list +%type <mediaList> maybe_media_list +%type <mediaQuery> media_query +%type <mediaQueryRestrictor> maybe_media_restrictor +%type <valueList> maybe_media_value +%type <mediaQueryExp> media_query_exp +%type <mediaQueryExpList> media_query_exp_list +%type <mediaQueryExpList> maybe_and_media_query_exp_list + +%type <string> keyframe_name +%type <keyframeRule> keyframe_rule +%type <keyframesRule> keyframes_rule +%type <valueList> key_list +%type <value> key + +%type <integer> property + +%type <selector> specifier +%type <selector> specifier_list +%type <selector> simple_selector +%type <selector> selector +%type <selector> selector_list +%type <selector> selector_with_trailing_whitespace +%type <selector> class +%type <selector> attrib +%type <selector> pseudo + +%type <boolean> declaration_list +%type <boolean> decl_list +%type <boolean> declaration + +%type <boolean> prio + +%type <integer> match +%type <integer> unary_operator +%type <character> operator + +%type <valueList> expr +%type <value> term +%type <value> unary_term +%type <value> function + +%type <string> element_name +%type <string> attr_name + +%type <string> variable_name +%type <boolean> variables_declaration_list +%type <boolean> variables_decl_list +%type <boolean> variables_declaration +%type <value> variable_reference + +%% + +stylesheet: + maybe_charset maybe_sgml import_list variables_list namespace_list rule_list + | webkit_rule maybe_space + | webkit_decls maybe_space + | webkit_value maybe_space + | webkit_mediaquery maybe_space + | webkit_selector maybe_space + | webkit_variables_decls maybe_space + | webkit_keyframe_rule maybe_space + ; + +valid_rule_or_import: + valid_rule + | import + ; + +webkit_rule: + WEBKIT_RULE_SYM '{' maybe_space valid_rule_or_import maybe_space '}' { + static_cast<CSSParser*>(parser)->m_rule = $4; + } +; + +webkit_keyframe_rule: + WEBKIT_KEYFRAME_RULE_SYM '{' maybe_space keyframe_rule maybe_space '}' { + static_cast<CSSParser*>(parser)->m_keyframe = $4; + } +; + +webkit_decls: + WEBKIT_DECLS_SYM '{' maybe_space declaration_list '}' { + /* can be empty */ + } +; + +webkit_variables_decls: + WEBKIT_VARIABLES_DECLS_SYM '{' maybe_space variables_declaration_list '}' { + /* can be empty */ + } +; + +webkit_value: + WEBKIT_VALUE_SYM '{' maybe_space expr '}' { + CSSParser* p = static_cast<CSSParser*>(parser); + if ($4) { + p->m_valueList = p->sinkFloatingValueList($4); + int oldParsedProperties = p->m_numParsedProperties; + if (!p->parseValue(p->m_id, p->m_important)) + p->rollbackLastProperties(p->m_numParsedProperties - oldParsedProperties); + delete p->m_valueList; + p->m_valueList = 0; + } + } +; + +webkit_mediaquery: + WEBKIT_MEDIAQUERY_SYM WHITESPACE maybe_space media_query '}' { + CSSParser* p = static_cast<CSSParser*>(parser); + p->m_mediaQuery = p->sinkFloatingMediaQuery($4); + } +; + +webkit_selector: + WEBKIT_SELECTOR_SYM '{' maybe_space selector_list '}' { + CSSParser* p = static_cast<CSSParser*>(parser); + p->m_floatingSelector = p->sinkFloatingSelector($4); + } +; + +maybe_space: + /* empty */ %prec UNIMPORTANT_TOK + | maybe_space WHITESPACE + ; + +maybe_sgml: + /* empty */ + | maybe_sgml SGML_CD + | maybe_sgml WHITESPACE + ; + +maybe_charset: + /* empty */ + | charset { + } + ; + +closing_brace: + '}' + | %prec maybe_sgml TOKEN_EOF + ; + +charset: + CHARSET_SYM maybe_space STRING maybe_space ';' { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = static_cast<CSSParser*>(parser)->createCharsetRule($3); + if ($$ && p->m_styleSheet) + p->m_styleSheet->append($$); + } + | CHARSET_SYM error invalid_block { + } + | CHARSET_SYM error ';' { + } +; + +import_list: + /* empty */ + | import_list import maybe_sgml { + CSSParser* p = static_cast<CSSParser*>(parser); + if ($2 && p->m_styleSheet) + p->m_styleSheet->append($2); + } + | invalid_at_list { + } + ; + +variables_list: +/* empty */ +| variables_list variables_rule maybe_sgml { + CSSParser* p = static_cast<CSSParser*>(parser); + if ($2 && p->m_styleSheet) + p->m_styleSheet->append($2); +} +; + +namespace_list: +/* empty */ +| namespace_list namespace maybe_sgml +; + +rule_list: + /* empty */ + | rule_list rule maybe_sgml { + CSSParser* p = static_cast<CSSParser*>(parser); + if ($2 && p->m_styleSheet) + p->m_styleSheet->append($2); + } + ; + +valid_rule: + ruleset + | media + | page + | font_face + | keyframes + ; + +rule: + valid_rule + | invalid_rule + | invalid_at + | invalid_import + ; + +block_rule_list: + /* empty */ { $$ = 0; } + | block_rule_list block_rule maybe_sgml { + $$ = $1; + if ($2) { + if (!$$) + $$ = static_cast<CSSParser*>(parser)->createRuleList(); + $$->append($2); + } + } + ; + +block_valid_rule: + ruleset + | page + | font_face + | keyframes + ; + +block_rule: + block_valid_rule + | invalid_rule + | invalid_at + | invalid_import + | invalid_media + ; + + +import: + IMPORT_SYM maybe_space string_or_uri maybe_space maybe_media_list ';' { + $$ = static_cast<CSSParser*>(parser)->createImportRule($3, $5); + } + | IMPORT_SYM maybe_space string_or_uri maybe_space maybe_media_list invalid_block { + $$ = 0; + } + | IMPORT_SYM error ';' { + $$ = 0; + } + | IMPORT_SYM error invalid_block { + $$ = 0; + } + ; + +variables_rule: + WEBKIT_VARIABLES_SYM maybe_space maybe_media_list '{' maybe_space variables_declaration_list '}' { + $$ = static_cast<CSSParser*>(parser)->createVariablesRule($3, true); + } + | + WEBKIT_DEFINE_SYM maybe_space variables_media_list '{' maybe_space variables_declaration_list '}' { + $$ = static_cast<CSSParser*>(parser)->createVariablesRule($3, false); + } + ; + +variables_media_list: + /* empty */ { + $$ = static_cast<CSSParser*>(parser)->createMediaList(); + } + | + VARIABLES_FOR WHITESPACE media_list { + $$ = $3; + } + ; + +variables_declaration_list: + variables_declaration { + $$ = $1; + } + | variables_decl_list variables_declaration { + $$ = $1; + if ($2) + $$ = $2; + } + | variables_decl_list { + $$ = $1; + } + | error invalid_block_list error { + $$ = false; + } + | error { + $$ = false; + } + | variables_decl_list error { + $$ = $1; + } + ; + +variables_decl_list: + variables_declaration ';' maybe_space { + $$ = $1; + } + | variables_declaration invalid_block_list ';' maybe_space { + $$ = false; + } + | error ';' maybe_space { + $$ = false; + } + | error invalid_block_list error ';' maybe_space { + $$ = false; + } + | variables_decl_list variables_declaration ';' maybe_space { + $$ = $1; + if ($2) + $$ = $2; + } + | variables_decl_list error ';' maybe_space { + $$ = $1; + } + | variables_decl_list error invalid_block_list error ';' maybe_space { + $$ = $1; + } + ; + +variables_declaration: + variable_name ':' maybe_space expr { + $$ = static_cast<CSSParser*>(parser)->addVariable($1, $4); + } + | + variable_name maybe_space '{' maybe_space declaration_list '}' maybe_space { + $$ = static_cast<CSSParser*>(parser)->addVariableDeclarationBlock($1); + } + | + variable_name error { + $$ = false; + } + | + variable_name ':' maybe_space error expr { + $$ = false; + } + | + variable_name ':' maybe_space { + /* @variables { varname: } Just reduce away this variable with no value. */ + $$ = false; + } + | + variable_name ':' maybe_space error { + /* if we come across rules with invalid values like this case: @variables { varname: *; }, just discard the property/value pair */ + $$ = false; + } + ; + +variable_name: + IDENT maybe_space { + $$ = $1; + } + ; + +namespace: +NAMESPACE_SYM maybe_space maybe_ns_prefix string_or_uri maybe_space ';' { + CSSParser* p = static_cast<CSSParser*>(parser); + if (p->m_styleSheet) + p->m_styleSheet->addNamespace(p, $3, $4); +} +| NAMESPACE_SYM error invalid_block +| NAMESPACE_SYM error ';' +; + +maybe_ns_prefix: +/* empty */ { $$.characters = 0; } +| IDENT WHITESPACE { $$ = $1; } +; + +string_or_uri: +STRING +| URI +; + +media_feature: + IDENT maybe_space { + $$ = $1; + } + ; + +maybe_media_value: + /*empty*/ { + $$ = 0; + } + | ':' maybe_space expr maybe_space { + $$ = $3; + } + ; + +media_query_exp: + '(' maybe_space media_feature maybe_space maybe_media_value ')' maybe_space { + $3.lower(); + $$ = static_cast<CSSParser*>(parser)->createFloatingMediaQueryExp($3, $5); + } + ; + +media_query_exp_list: + media_query_exp { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingMediaQueryExpList(); + $$->append(p->sinkFloatingMediaQueryExp($1)); + } + | media_query_exp_list maybe_space MEDIA_AND maybe_space media_query_exp { + $$ = $1; + $$->append(static_cast<CSSParser*>(parser)->sinkFloatingMediaQueryExp($5)); + } + ; + +maybe_and_media_query_exp_list: + /*empty*/ { + $$ = static_cast<CSSParser*>(parser)->createFloatingMediaQueryExpList(); + } + | MEDIA_AND maybe_space media_query_exp_list { + $$ = $3; + } + ; + +maybe_media_restrictor: + /*empty*/ { + $$ = MediaQuery::None; + } + | MEDIA_ONLY { + $$ = MediaQuery::Only; + } + | MEDIA_NOT { + $$ = MediaQuery::Not; + } + ; + +media_query: + media_query_exp_list { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingMediaQuery(p->sinkFloatingMediaQueryExpList($1)); + } + | + maybe_media_restrictor maybe_space medium maybe_and_media_query_exp_list { + CSSParser* p = static_cast<CSSParser*>(parser); + $3.lower(); + $$ = p->createFloatingMediaQuery($1, $3, p->sinkFloatingMediaQueryExpList($4)); + } + ; + +maybe_media_list: + /* empty */ { + $$ = static_cast<CSSParser*>(parser)->createMediaList(); + } + | media_list + ; + +media_list: + media_query { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createMediaList(); + $$->appendMediaQuery(p->sinkFloatingMediaQuery($1)); + } + | media_list ',' maybe_space media_query { + $$ = $1; + if ($$) + $$->appendMediaQuery(static_cast<CSSParser*>(parser)->sinkFloatingMediaQuery($4)); + } + | media_list error { + $$ = 0; + } + ; + +media: + MEDIA_SYM maybe_space media_list '{' maybe_space block_rule_list save_block { + $$ = static_cast<CSSParser*>(parser)->createMediaRule($3, $6); + } + | MEDIA_SYM maybe_space '{' maybe_space block_rule_list save_block { + $$ = static_cast<CSSParser*>(parser)->createMediaRule(0, $5); + } + ; + +medium: + IDENT maybe_space { + $$ = $1; + } + ; + +keyframes: + WEBKIT_KEYFRAMES_SYM maybe_space keyframe_name maybe_space '{' maybe_space keyframes_rule '}' { + $$ = $7; + $7->setNameInternal($3); + } + ; + +keyframe_name: + IDENT + | STRING + ; + +keyframes_rule: + /* empty */ { $$ = static_cast<CSSParser*>(parser)->createKeyframesRule(); } + | keyframes_rule keyframe_rule maybe_space { + $$ = $1; + if ($2) + $$->append($2); + } + ; + +keyframe_rule: + key_list maybe_space '{' maybe_space declaration_list '}' { + $$ = static_cast<CSSParser*>(parser)->createKeyframeRule($1); + } + ; + +key_list: + key { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingValueList(); + $$->addValue(p->sinkFloatingValue($1)); + } + | key_list maybe_space ',' maybe_space key { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = $1; + if ($$) + $$->addValue(p->sinkFloatingValue($5)); + } + ; + +key: + PERCENTAGE { $$.id = 0; $$.isInt = false; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_NUMBER; } + | IDENT { + $$.id = 0; $$.isInt = false; $$.unit = CSSPrimitiveValue::CSS_NUMBER; + CSSParserString& str = $1; + if (equalIgnoringCase(static_cast<const String&>(str), "from")) + $$.fValue = 0; + else if (equalIgnoringCase(static_cast<const String&>(str), "to")) + $$.fValue = 100; + else + YYERROR; + } + ; + +/* +page: + PAGE_SYM maybe_space IDENT? pseudo_page? maybe_space + '{' maybe_space declaration [ ';' maybe_space declaration ]* '}' maybe_space + ; + +pseudo_page + : ':' IDENT + ; +*/ + +page: + PAGE_SYM error invalid_block { + $$ = 0; + } + | PAGE_SYM error ';' { + $$ = 0; + } + ; + +font_face: + FONT_FACE_SYM maybe_space + '{' maybe_space declaration_list '}' maybe_space { + $$ = static_cast<CSSParser*>(parser)->createFontFaceRule(); + } + | FONT_FACE_SYM error invalid_block { + $$ = 0; + } + | FONT_FACE_SYM error ';' { + $$ = 0; + } +; + +combinator: + '+' maybe_space { $$ = CSSSelector::DirectAdjacent; } + | '~' maybe_space { $$ = CSSSelector::IndirectAdjacent; } + | '>' maybe_space { $$ = CSSSelector::Child; } + ; + +unary_operator: + '-' { $$ = -1; } + | '+' { $$ = 1; } + ; + +ruleset: + selector_list '{' maybe_space declaration_list closing_brace { + $$ = static_cast<CSSParser*>(parser)->createStyleRule($1); + } + ; + +selector_list: + selector %prec UNIMPORTANT_TOK { + $$ = $1; + } + | selector_list ',' maybe_space selector %prec UNIMPORTANT_TOK { + if ($1 && $4) { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = $1; + $$->append(p->sinkFloatingSelector($4)); + } else + $$ = 0; + } + | selector_list error { + $$ = 0; + } + ; + +selector_with_trailing_whitespace: + selector WHITESPACE { + $$ = $1; + } + ; + +selector: + simple_selector { + $$ = $1; + } + | selector_with_trailing_whitespace + { + $$ = $1; + } + | selector_with_trailing_whitespace simple_selector + { + $$ = $2; + if (!$1) + $$ = 0; + else if ($$) { + CSSParser* p = static_cast<CSSParser*>(parser); + CSSSelector* end = $$; + while (end->m_tagHistory) + end = end->m_tagHistory; + end->m_relation = CSSSelector::Descendant; + end->m_tagHistory = p->sinkFloatingSelector($1); + if (Document* doc = p->document()) + doc->setUsesDescendantRules(true); + } + } + | selector combinator simple_selector { + $$ = $3; + if (!$1) + $$ = 0; + else if ($$) { + CSSParser* p = static_cast<CSSParser*>(parser); + CSSSelector* end = $$; + while (end->m_tagHistory) + end = end->m_tagHistory; + end->m_relation = $2; + end->m_tagHistory = p->sinkFloatingSelector($1); + if ($2 == CSSSelector::Child) { + if (Document* doc = p->document()) + doc->setUsesDescendantRules(true); + } else if ($2 == CSSSelector::DirectAdjacent || $2 == CSSSelector::IndirectAdjacent) { + if (Document* doc = p->document()) + doc->setUsesSiblingRules(true); + } + } + } + | selector error { + $$ = 0; + } + ; + +namespace_selector: + /* empty */ '|' { $$.characters = 0; $$.length = 0; } + | '*' '|' { static UChar star = '*'; $$.characters = ☆ $$.length = 1; } + | IDENT '|' { $$ = $1; } +; + +simple_selector: + element_name { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingSelector(); + $$->m_tag = QualifiedName(nullAtom, $1, p->m_defaultNamespace); + } + | element_name specifier_list { + $$ = $2; + if ($$) { + CSSParser* p = static_cast<CSSParser*>(parser); + $$->m_tag = QualifiedName(nullAtom, $1, p->m_defaultNamespace); + } + } + | specifier_list { + $$ = $1; + CSSParser* p = static_cast<CSSParser*>(parser); + if ($$ && p->m_defaultNamespace != starAtom) + $$->m_tag = QualifiedName(nullAtom, starAtom, p->m_defaultNamespace); + } + | namespace_selector element_name { + AtomicString namespacePrefix = $1; + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingSelector(); + if (p->m_styleSheet) + $$->m_tag = QualifiedName(namespacePrefix, $2, + p->m_styleSheet->determineNamespace(namespacePrefix)); + else // FIXME: Shouldn't this case be an error? + $$->m_tag = QualifiedName(nullAtom, $2, p->m_defaultNamespace); + } + | namespace_selector element_name specifier_list { + $$ = $3; + if ($$) { + AtomicString namespacePrefix = $1; + CSSParser* p = static_cast<CSSParser*>(parser); + if (p->m_styleSheet) + $$->m_tag = QualifiedName(namespacePrefix, $2, + p->m_styleSheet->determineNamespace(namespacePrefix)); + else // FIXME: Shouldn't this case be an error? + $$->m_tag = QualifiedName(nullAtom, $2, p->m_defaultNamespace); + } + } + | namespace_selector specifier_list { + $$ = $2; + if ($$) { + AtomicString namespacePrefix = $1; + CSSParser* p = static_cast<CSSParser*>(parser); + if (p->m_styleSheet) + $$->m_tag = QualifiedName(namespacePrefix, starAtom, + p->m_styleSheet->determineNamespace(namespacePrefix)); + } + } + ; + +element_name: + IDENT { + CSSParserString& str = $1; + CSSParser* p = static_cast<CSSParser*>(parser); + Document* doc = p->document(); + if (doc && doc->isHTMLDocument()) + str.lower(); + $$ = str; + } + | '*' { + static UChar star = '*'; + $$.characters = ☆ + $$.length = 1; + } + ; + +specifier_list: + specifier { + $$ = $1; + } + | specifier_list specifier { + if (!$2) + $$ = 0; + else if ($1) { + $$ = $1; + CSSParser* p = static_cast<CSSParser*>(parser); + CSSSelector* end = $1; + while (end->m_tagHistory) + end = end->m_tagHistory; + end->m_relation = CSSSelector::SubSelector; + end->m_tagHistory = p->sinkFloatingSelector($2); + } + } + | specifier_list error { + $$ = 0; + } +; + +specifier: + IDSEL { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingSelector(); + $$->m_match = CSSSelector::Id; + if (!p->m_strict) + $1.lower(); + $$->m_attr = idAttr; + $$->m_value = $1; + } + | HEX { + if ($1.characters[0] >= '0' && $1.characters[0] <= '9') { + $$ = 0; + } else { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingSelector(); + $$->m_match = CSSSelector::Id; + if (!p->m_strict) + $1.lower(); + $$->m_attr = idAttr; + $$->m_value = $1; + } + } + | class + | attrib + | pseudo + ; + +class: + '.' IDENT { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingSelector(); + $$->m_match = CSSSelector::Class; + if (!p->m_strict) + $2.lower(); + $$->m_attr = classAttr; + $$->m_value = $2; + } + ; + +attr_name: + IDENT maybe_space { + CSSParserString& str = $1; + CSSParser* p = static_cast<CSSParser*>(parser); + Document* doc = p->document(); + if (doc && doc->isHTMLDocument()) + str.lower(); + $$ = str; + } + ; + +attrib: + '[' maybe_space attr_name ']' { + $$ = static_cast<CSSParser*>(parser)->createFloatingSelector(); + $$->m_attr = QualifiedName(nullAtom, $3, nullAtom); + $$->m_match = CSSSelector::Set; + } + | '[' maybe_space attr_name match maybe_space ident_or_string maybe_space ']' { + $$ = static_cast<CSSParser*>(parser)->createFloatingSelector(); + $$->m_attr = QualifiedName(nullAtom, $3, nullAtom); + $$->m_match = (CSSSelector::Match)$4; + $$->m_value = $6; + } + | '[' maybe_space namespace_selector attr_name ']' { + AtomicString namespacePrefix = $3; + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingSelector(); + $$->m_attr = QualifiedName(namespacePrefix, $4, + p->m_styleSheet->determineNamespace(namespacePrefix)); + $$->m_match = CSSSelector::Set; + } + | '[' maybe_space namespace_selector attr_name match maybe_space ident_or_string maybe_space ']' { + AtomicString namespacePrefix = $3; + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingSelector(); + $$->m_attr = QualifiedName(namespacePrefix, $4, + p->m_styleSheet->determineNamespace(namespacePrefix)); + $$->m_match = (CSSSelector::Match)$5; + $$->m_value = $7; + } + ; + +match: + '=' { + $$ = CSSSelector::Exact; + } + | INCLUDES { + $$ = CSSSelector::List; + } + | DASHMATCH { + $$ = CSSSelector::Hyphen; + } + | BEGINSWITH { + $$ = CSSSelector::Begin; + } + | ENDSWITH { + $$ = CSSSelector::End; + } + | CONTAINS { + $$ = CSSSelector::Contain; + } + ; + +ident_or_string: + IDENT + | STRING + ; + +pseudo: + ':' IDENT { + $$ = static_cast<CSSParser*>(parser)->createFloatingSelector(); + $$->m_match = CSSSelector::PseudoClass; + $2.lower(); + $$->m_value = $2; + CSSSelector::PseudoType type = $$->pseudoType(); + if (type == CSSSelector::PseudoUnknown) + $$ = 0; + else if (type == CSSSelector::PseudoEmpty || + type == CSSSelector::PseudoFirstChild || + type == CSSSelector::PseudoFirstOfType || + type == CSSSelector::PseudoLastChild || + type == CSSSelector::PseudoLastOfType || + type == CSSSelector::PseudoOnlyChild || + type == CSSSelector::PseudoOnlyOfType) { + CSSParser* p = static_cast<CSSParser*>(parser); + Document* doc = p->document(); + if (doc) + doc->setUsesSiblingRules(true); + } else if (type == CSSSelector::PseudoFirstLine) { + CSSParser* p = static_cast<CSSParser*>(parser); + if (Document* doc = p->document()) + doc->setUsesFirstLineRules(true); + } + } + | ':' ':' IDENT { + $$ = static_cast<CSSParser*>(parser)->createFloatingSelector(); + $$->m_match = CSSSelector::PseudoElement; + $3.lower(); + $$->m_value = $3; + CSSSelector::PseudoType type = $$->pseudoType(); + if (type == CSSSelector::PseudoUnknown) + $$ = 0; + else if (type == CSSSelector::PseudoFirstLine) { + CSSParser* p = static_cast<CSSParser*>(parser); + if (Document* doc = p->document()) + doc->setUsesFirstLineRules(true); + } + } + // used by :nth-*(ax+b) + | ':' FUNCTION NTH ')' { + CSSParser *p = static_cast<CSSParser*>(parser); + $$ = static_cast<CSSSelector*>(p->createFloatingNthSelector()); + $$->m_match = CSSSelector::PseudoClass; + $$->m_argument = $3; + $$->m_value = $2; + CSSSelector::PseudoType type = $$->pseudoType(); + if (type == CSSSelector::PseudoUnknown) + $$ = 0; + else if (type == CSSSelector::PseudoNthChild || + type == CSSSelector::PseudoNthOfType || + type == CSSSelector::PseudoNthLastChild || + type == CSSSelector::PseudoNthLastOfType) { + if (p->document()) + p->document()->setUsesSiblingRules(true); + } + } + // used by :nth-* + | ':' FUNCTION INTEGER ')' { + CSSParser *p = static_cast<CSSParser*>(parser); + $$ = static_cast<CSSSelector*>(p->createFloatingNthSelector()); + $$->m_match = CSSSelector::PseudoClass; + $$->m_argument = String::number($3); + $$->m_value = $2; + CSSSelector::PseudoType type = $$->pseudoType(); + if (type == CSSSelector::PseudoUnknown) + $$ = 0; + else if (type == CSSSelector::PseudoNthChild || + type == CSSSelector::PseudoNthOfType || + type == CSSSelector::PseudoNthLastChild || + type == CSSSelector::PseudoNthLastOfType) { + if (p->document()) + p->document()->setUsesSiblingRules(true); + } + } + // used by :nth-*(odd/even) and :lang + | ':' FUNCTION IDENT ')' { + CSSParser *p = static_cast<CSSParser*>(parser); + $$ = static_cast<CSSSelector*>(p->createFloatingNthSelector()); + $$->m_match = CSSSelector::PseudoClass; + $$->m_argument = $3; + $2.lower(); + $$->m_value = $2; + CSSSelector::PseudoType type = $$->pseudoType(); + if (type == CSSSelector::PseudoUnknown) + $$ = 0; + else if (type == CSSSelector::PseudoNthChild || + type == CSSSelector::PseudoNthOfType || + type == CSSSelector::PseudoNthLastChild || + type == CSSSelector::PseudoNthLastOfType) { + if (p->document()) + p->document()->setUsesSiblingRules(true); + } + } + // used by :not + | ':' NOTFUNCTION maybe_space simple_selector maybe_space ')' { + if (!$4) + $$ = 0; + else { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingSelector(); + $$->m_match = CSSSelector::PseudoClass; + $$->m_simpleSelector = p->sinkFloatingSelector($4); + $2.lower(); + $$->m_value = $2; + } + } + ; + +declaration_list: + declaration { + $$ = $1; + } + | decl_list declaration { + $$ = $1; + if ( $2 ) + $$ = $2; + } + | decl_list { + $$ = $1; + } + | error invalid_block_list error { + $$ = false; + } + | error { + $$ = false; + } + | decl_list error { + $$ = $1; + } + | decl_list invalid_block_list { + $$ = $1; + } + ; + +decl_list: + declaration ';' maybe_space { + $$ = $1; + } + | declaration invalid_block_list ';' maybe_space { + $$ = false; + } + | error ';' maybe_space { + $$ = false; + } + | error invalid_block_list error ';' maybe_space { + $$ = false; + } + | decl_list declaration ';' maybe_space { + $$ = $1; + if ($2) + $$ = $2; + } + | decl_list error ';' maybe_space { + $$ = $1; + } + | decl_list error invalid_block_list error ';' maybe_space { + $$ = $1; + } + ; + +declaration: + property ':' maybe_space expr prio { + $$ = false; + CSSParser* p = static_cast<CSSParser*>(parser); + if ($1 && $4) { + p->m_valueList = p->sinkFloatingValueList($4); + int oldParsedProperties = p->m_numParsedProperties; + $$ = p->parseValue($1, $5); + if (!$$) + p->rollbackLastProperties(p->m_numParsedProperties - oldParsedProperties); + delete p->m_valueList; + p->m_valueList = 0; + } + } + | + variable_reference maybe_space { + CSSParser* p = static_cast<CSSParser*>(parser); + p->m_valueList = new CSSParserValueList; + p->m_valueList->addValue(p->sinkFloatingValue($1)); + int oldParsedProperties = p->m_numParsedProperties; + $$ = p->parseValue(CSSPropertyWebkitVariableDeclarationBlock, false); + if (!$$) + p->rollbackLastProperties(p->m_numParsedProperties - oldParsedProperties); + delete p->m_valueList; + p->m_valueList = 0; + } + | + property error { + $$ = false; + } + | + property ':' maybe_space error expr prio { + /* The default movable type template has letter-spacing: .none; Handle this by looking for + error tokens at the start of an expr, recover the expr and then treat as an error, cleaning + up and deleting the shifted expr. */ + $$ = false; + } + | + property ':' maybe_space expr prio error { + /* When we encounter something like p {color: red !important fail;} we should drop the declaration */ + $$ = false; + } + | + IMPORTANT_SYM maybe_space { + /* Handle this case: div { text-align: center; !important } Just reduce away the stray !important. */ + $$ = false; + } + | + property ':' maybe_space { + /* div { font-family: } Just reduce away this property with no value. */ + $$ = false; + } + | + property ':' maybe_space error { + /* if we come across rules with invalid values like this case: p { weight: *; }, just discard the rule */ + $$ = false; + } + | + property invalid_block { + /* if we come across: div { color{;color:maroon} }, ignore everything within curly brackets */ + $$ = false; + } + ; + +property: + IDENT maybe_space { + $$ = cssPropertyID($1); + } + ; + +prio: + IMPORTANT_SYM maybe_space { $$ = true; } + | /* empty */ { $$ = false; } + ; + +expr: + term { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = p->createFloatingValueList(); + $$->addValue(p->sinkFloatingValue($1)); + } + | expr operator term { + CSSParser* p = static_cast<CSSParser*>(parser); + $$ = $1; + if ($$) { + if ($2) { + CSSParserValue v; + v.id = 0; + v.unit = CSSParserValue::Operator; + v.iValue = $2; + $$->addValue(v); + } + $$->addValue(p->sinkFloatingValue($3)); + } + } + | expr error { + $$ = 0; + } + ; + +operator: + '/' maybe_space { + $$ = '/'; + } + | ',' maybe_space { + $$ = ','; + } + | /* empty */ { + $$ = 0; + } + ; + +term: + unary_term { $$ = $1; } + | unary_operator unary_term { $$ = $2; $$.fValue *= $1; } + | STRING maybe_space { $$.id = 0; $$.string = $1; $$.unit = CSSPrimitiveValue::CSS_STRING; } + | IDENT maybe_space { + $$.id = cssValueKeywordID($1); + $$.unit = CSSPrimitiveValue::CSS_IDENT; + $$.string = $1; + } + /* We might need to actually parse the number from a dimension, but we can't just put something that uses $$.string into unary_term. */ + | DIMEN maybe_space { $$.id = 0; $$.string = $1; $$.unit = CSSPrimitiveValue::CSS_DIMENSION } + | unary_operator DIMEN maybe_space { $$.id = 0; $$.string = $2; $$.unit = CSSPrimitiveValue::CSS_DIMENSION } + | URI maybe_space { $$.id = 0; $$.string = $1; $$.unit = CSSPrimitiveValue::CSS_URI; } + | UNICODERANGE maybe_space { $$.id = 0; $$.string = $1; $$.unit = CSSPrimitiveValue::CSS_UNICODE_RANGE } + | hexcolor { $$.id = 0; $$.string = $1; $$.unit = CSSPrimitiveValue::CSS_PARSER_HEXCOLOR; } + | '#' maybe_space { $$.id = 0; $$.string = CSSParserString(); $$.unit = CSSPrimitiveValue::CSS_PARSER_HEXCOLOR; } /* Handle error case: "color: #;" */ + /* FIXME: according to the specs a function can have a unary_operator in front. I know no case where this makes sense */ + | function { + $$ = $1; + } + | variable_reference maybe_space { + $$ = $1; + } + | '%' maybe_space { $$.id = 0; $$.fValue = 0; $$.unit = CSSPrimitiveValue::CSS_PERCENTAGE; } /* Handle width: %; ANDROID: Fix an uninitialized Value object causing the device to crash */ + ; + +unary_term: + INTEGER maybe_space { $$.id = 0; $$.isInt = true; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_NUMBER; } + | FLOATTOKEN maybe_space { $$.id = 0; $$.isInt = false; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_NUMBER; } + | PERCENTAGE maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_PERCENTAGE; } + | PXS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_PX; } + | CMS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_CM; } + | MMS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_MM; } + | INS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_IN; } + | PTS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_PT; } + | PCS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_PC; } + | DEGS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_DEG; } + | RADS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_RAD; } + | GRADS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_GRAD; } + | MSECS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_MS; } + | SECS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_S; } + | HERZ maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_HZ; } + | KHERZ maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_KHZ; } + | EMS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_EMS; } + | QEMS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSParserValue::Q_EMS; } + | EXS maybe_space { $$.id = 0; $$.fValue = $1; $$.unit = CSSPrimitiveValue::CSS_EXS; } + ; + +variable_reference: + VARCALL { + $$.id = 0; + $$.string = $1; + $$.unit = CSSPrimitiveValue::CSS_PARSER_VARIABLE_FUNCTION_SYNTAX; + } + ; + +function: + FUNCTION maybe_space expr ')' maybe_space { + CSSParser* p = static_cast<CSSParser*>(parser); + CSSParserFunction* f = p->createFloatingFunction(); + f->name = $1; + f->args = p->sinkFloatingValueList($3); + $$.id = 0; + $$.unit = CSSParserValue::Function; + $$.function = f; + } | + FUNCTION maybe_space error { + CSSParser* p = static_cast<CSSParser*>(parser); + CSSParserFunction* f = p->createFloatingFunction(); + f->name = $1; + f->args = 0; + $$.id = 0; + $$.unit = CSSParserValue::Function; + $$.function = f; + } + ; +/* + * There is a constraint on the color that it must + * have either 3 or 6 hex-digits (i.e., [0-9a-fA-F]) + * after the "#"; e.g., "#000" is OK, but "#abcd" is not. + */ +hexcolor: + HEX maybe_space { $$ = $1; } + | IDSEL maybe_space { $$ = $1; } + ; + + +/* error handling rules */ + +save_block: + closing_brace { + $$ = 0; + } + | error closing_brace { + $$ = 0; + } + ; + +invalid_at: + ATKEYWORD error invalid_block { + $$ = 0; + } + | ATKEYWORD error ';' { + $$ = 0; + } + ; + +invalid_at_list: + invalid_at maybe_sgml + | invalid_at_list invalid_at maybe_sgml + ; + +invalid_import: + import { + $$ = 0; + } + ; + +invalid_media: + media { + $$ = 0; + } + ; + +invalid_rule: + error invalid_block { + $$ = 0; + } + +/* + Seems like the two rules below are trying too much and violating + http://www.hixie.ch/tests/evil/mixed/csserrorhandling.html + + | error ';' { + $$ = 0; + } + | error '}' { + $$ = 0; + } +*/ + ; + +invalid_block: + '{' error invalid_block_list error closing_brace + | '{' error closing_brace + ; + +invalid_block_list: + invalid_block + | invalid_block_list error invalid_block +; + +%% |