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Started working on StringTemplateCSS.
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‎src/main/antlr4/org/acmsl/javacss/css/parser/StringTemplateCSS.g4‎

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/*
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* [LICENSE]
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*/
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grammar StringTemplateCSS;
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css
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: selectorCombination '{' property+ '}' EOF
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;
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selectorCombination
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: selector+
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;
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selector
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: ('.' | '#')? (Identifier | StringLiteral) (COLONCOLON ('before' | 'after'))?
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;
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property
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: Identifier ':' StringLiteral ';'
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;
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StringLiteral
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: '"' StringCharacters? '"' | '\'' StringCharacters? '\''
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;
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fragment
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StringCharacters
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: StringCharacter+
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;
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fragment
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StringCharacter
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: ~["\\]
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| EscapeSequence
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;
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// §3.10.6 Escape Sequences for Character and String Literals
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fragment
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EscapeSequence
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: '\\' [btnfr"'\\]
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| OctalEscape
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| UnicodeEscape // This is not in the spec but prevents having to preprocess the input
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;
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fragment
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OctalEscape
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: '\\' OctalDigit
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| '\\' OctalDigit OctalDigit
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| '\\' ZeroToThree OctalDigit OctalDigit
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;
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fragment
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OctalDigit
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: [0-7]
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;
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fragment
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ZeroToThree
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: [0-3]
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;
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// This is not in the spec but prevents having to preprocess the input
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fragment
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UnicodeEscape
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: '\\' 'u' HexDigit HexDigit HexDigit HexDigit
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;
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fragment
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HexDigit
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: [0-9a-fA-F]
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;
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LBRACE : '{';
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RBRACE : '}';
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LBRACK : '[';
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RBRACK : ']';
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SEMI : ';';
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COMMA : ',';
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DOT : '.';
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GT : '>';
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LT : '<';
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TILDE : '~';
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COLON : ':';
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MUL : '*';
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COLONCOLON : '::';
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// §3.8 Identifiers (must appear after all keywords in the grammar)
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Identifier
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: JavaLetter JavaLetterOrDigit*
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;
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fragment
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JavaLetter
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: [a-zA-Z$_] // these are the "java letters" below 0xFF
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| // covers all characters above 0xFF which are not a surrogate
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~[\u0000-\u00FF\uD800-\uDBFF]
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{Character.isJavaIdentifierStart(_input.LA(-1))}?
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| // covers UTF-16 surrogate pairs encodings for U+10000 to U+10FFFF
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[\uD800-\uDBFF] [\uDC00-\uDFFF]
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{Character.isJavaIdentifierStart(Character.toCodePoint((char)_input.LA(-2), (char)_input.LA(-1)))}?
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;
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fragment
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JavaLetterOrDigit
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: [a-zA-Z0-9$_] // these are the "java letters or digits" below 0xFF
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| // covers all characters above 0xFF which are not a surrogate
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~[\u0000-\u00FF\uD800-\uDBFF]
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{Character.isJavaIdentifierPart(_input.LA(-1))}?
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| // covers UTF-16 surrogate pairs encodings for U+10000 to U+10FFFF
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[\uD800-\uDBFF] [\uDC00-\uDFFF]
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{Character.isJavaIdentifierPart(Character.toCodePoint((char)_input.LA(-2), (char)_input.LA(-1)))}?
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;
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//
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// Additional symbols not defined in the lexical specification
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//
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AT : '@';
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ELLIPSIS : '...';
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//
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// Whitespace and comments
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//
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WS : [ \t\r\n\u000C]+ -> skip
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;
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COMMENT
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: '/*' .*? '*/' -> skip
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;
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LINE_COMMENT
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: '//' ~[\r\n]* -> skip
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;

‎src/main/java/org/acmsl/javacss/css/StringTemplateCSSHelper.java‎

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/*
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devdel
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Copyright (C) 2002-today Jose San Leandro Armendariz
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chous@acm-sl.org
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Thanks to ACM S.L. for distributing this library under the GPL license.
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Contact info: jose.sanleandro@acm-sl.com
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******************************************************************************
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*
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* Filename: StringTemplateCSSHelper.java
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*
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* Author: Jose San Leandro Armendariz
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*
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* Description:
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*
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* Date: 2015/03/02
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* Time: 17:13
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*
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*/
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package org.acmsl.javacss.css;
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/*
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* Importing JetBrains annotations.
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*/
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import org.acmsl.javacss.css.parser.StringTemplateCSSLexer;
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import org.acmsl.javacss.css.parser.StringTemplateCSSParser;
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import org.antlr.v4.runtime.CommonTokenStream;
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import org.antlr.v4.runtime.ANTLRInputStream;
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import org.antlr.v4.runtime.tree.ParseTree;
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import org.antlr.v4.runtime.tree.xpath.XPath;
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/*
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* Importing checkthread.org annotations.
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*/
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import org.checkthread.annotations.ThreadSafe;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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/**
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*
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* @author <a href="mailto:queryj@acm-sl.org">Jose San Leandro</a>
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* @since 3.0
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* Created: 2015/03/02 17:13
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*/
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@ThreadSafe
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public class StringTemplateCSSHelper
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{
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private final String input;
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private List<String> selectors;
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public StringTemplateCSSHelper(final String input)
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{
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this.input = input;
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}
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public List<String> getSelectors()
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{
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if (this.selectors == null)
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{
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initialize(this.input);
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}
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return this.selectors;
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}
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protected void initialize(String input)
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{
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StringTemplateCSSLexer lexer = new StringTemplateCSSLexer(new ANTLRInputStream(input));
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CommonTokenStream tokens = new CommonTokenStream(lexer);
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StringTemplateCSSParser parser = new StringTemplateCSSParser(tokens);
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ParseTree tree = parser.css();
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Collection<ParseTree> selectorEntries = XPath.findAll(tree, "//selectorCombination", parser);
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this.selectors = new ArrayList<String>(selectorEntries.size());
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for (ParseTree selectorEntry : selectorEntries)
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{
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this.selectors.add(selectorEntry.getText());
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}
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}
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}

‎src/main/java/org/acmsl/javacss/java8/parser/ASTHelper.java‎

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*/
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import org.acmsl.javacss.java8.parser.Java8Parser.CompilationUnitContext;
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import org.acmsl.javacss.java8.parser.Java8Parser.ImportDeclarationContext;
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import org.acmsl.javacss.java8.parser.Java8Parser.SingleTypeImportDeclarationContext;
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import org.acmsl.javacss.java8.parser.Java8Parser.TypeNameContext;
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import org.antlr.v4.runtime.ANTLRInputStream;
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import org.antlr.v4.runtime.CommonToken;
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import org.antlr.v4.runtime.CommonTokenStream;
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import org.antlr.v4.runtime.tree.ParseTree;
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