org.sonar.javascript.lexer.EcmaScriptLexer Maven / Gradle / Ivy
/*
* SonarQube JavaScript Plugin
* Copyright (C) 2011 SonarSource and Eriks Nukis
* [email protected]
*
* This program 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 3 of the License, or (at your option) any later version.
*
* This program 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 program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
*/
package org.sonar.javascript.lexer;
import com.sonar.sslr.api.GenericTokenType;
import com.sonar.sslr.impl.Lexer;
import com.sonar.sslr.impl.channel.BlackHoleChannel;
import com.sonar.sslr.impl.channel.IdentifierAndKeywordChannel;
import com.sonar.sslr.impl.channel.PunctuatorChannel;
import com.sonar.sslr.impl.channel.UnknownCharacterChannel;
import org.sonar.javascript.EcmaScriptConfiguration;
import org.sonar.javascript.api.EcmaScriptKeyword;
import org.sonar.javascript.api.EcmaScriptPunctuator;
import org.sonar.javascript.api.EcmaScriptTokenType;
import static com.sonar.sslr.impl.channel.RegexpChannelBuilder.commentRegexp;
import static com.sonar.sslr.impl.channel.RegexpChannelBuilder.regexp;
public final class EcmaScriptLexer {
private static final String EXP = "([Ee][+-]?+[0-9_]++)";
private static final String BINARY_EXP = "([Pp][+-]?+[0-9_]++)";
private static final String FLOAT_SUFFIX = "[fFdD]";
private static final String INT_SUFFIX = "[lL]";
public static final String NUMERIC_LITERAL = "(?:"
// Decimal
+ "[0-9]++\\.([0-9]++)?+" + EXP + "?+" + FLOAT_SUFFIX + "?+"
// Decimal
+ "|\\.[0-9]++" + EXP + "?+" + FLOAT_SUFFIX + "?+"
// Decimal
+ "|[0-9]++" + FLOAT_SUFFIX
+ "|[0-9]++" + EXP + FLOAT_SUFFIX + "?+"
// Hexadecimal
+ "|0[xX][0-9a-fA-F]++\\.[0-9a-fA-F_]*+" + BINARY_EXP + "?+" + FLOAT_SUFFIX + "?+"
// Hexadecimal
+ "|0[xX][0-9a-fA-F]++" + BINARY_EXP + FLOAT_SUFFIX + "?+"
// Integer Literals
// Hexadecimal
+ "|0[xX][0-9a-fA-F]++" + INT_SUFFIX + "?+"
// Binary (Java 7)
+ "|0[bB][01]++" + INT_SUFFIX + "?+"
// Decimal and Octal
+ "|[0-9]++" + INT_SUFFIX + "?+"
+ ")";
public static final String LITERAL = "(?:"
+ "\"([^\"\\\\]*+(\\\\[\\s\\S])?+)*+\""
+ "|'([^'\\\\]*+(\\\\[\\s\\S])?+)*+'"
+ ")";
public static final String SINGLE_LINE_COMMENT = "//[^\\n\\r]*+|