| /* |
| * [The "BSD license"] |
| * Copyright (c) 2014-2015 Gerald Rosenberg |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| /** |
| * A generally reusable set of fragments for import in to Lexer grammars. |
| * |
| * Modified 2015.06.16 gbr - |
| * -- generalized for inclusion into the ANTLRv4 grammar distribution |
| * |
| */ |
| lexer grammar LexBasic; |
| |
| @header{ |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| // DO NOT EDIT THIS FILE MANUALLY! |
| // SEE build.xml FOR INSTRUCTIONS |
| |
| |
| package org.antlr.parser.antlr4; |
| |
| } |
| |
| // ====================================================== |
| // Lexer fragments |
| // |
| // ----------------------------------- |
| // Whitespace & Comments |
| |
| fragment Ws |
| : Hws |
| | Vws |
| ; |
| |
| fragment Hws |
| : [ \t] |
| ; |
| |
| fragment Vws |
| : [\r\n\f] |
| ; |
| |
| fragment BlockComment |
| : '/*' .*? ('*/' | EOF) |
| ; |
| |
| fragment DocComment |
| : '/**' .*? ('*/' | EOF) |
| ; |
| |
| fragment LineComment |
| : '//' ~ [\r\n]* |
| ; |
| // ----------------------------------- |
| // Escapes |
| // Any kind of escaped character that we can embed within ANTLR literal strings. |
| |
| fragment EscSeq |
| : Esc ([btnfr"'\\] | UnicodeEsc | . | EOF) |
| ; |
| |
| fragment EscAny |
| : Esc . |
| ; |
| |
| fragment UnicodeEsc |
| : 'u' (HexDigit (HexDigit (HexDigit HexDigit?)?)?)? |
| ; |
| // ----------------------------------- |
| // Numerals |
| |
| fragment DecimalNumeral |
| : '0' |
| | [1-9] DecDigit* |
| ; |
| // ----------------------------------- |
| // Digits |
| |
| fragment HexDigit |
| : [0-9a-fA-F] |
| ; |
| |
| fragment DecDigit |
| : [0-9] |
| ; |
| // ----------------------------------- |
| // Literals |
| |
| fragment BoolLiteral |
| : 'true' |
| | 'false' |
| ; |
| |
| fragment CharLiteral |
| : SQuote (EscSeq | ~ ['\r\n\\]) SQuote |
| ; |
| |
| fragment SQuoteLiteral |
| : SQuote (EscSeq | ~ ['\r\n\\])* SQuote |
| ; |
| |
| fragment DQuoteLiteral |
| : DQuote (EscSeq | ~ ["\r\n\\])* DQuote |
| ; |
| |
| fragment USQuoteLiteral |
| : SQuote (EscSeq | ~ ['\r\n\\])* |
| ; |
| // ----------------------------------- |
| // Character ranges |
| |
| fragment NameChar |
| : NameStartChar |
| | '0' .. '9' |
| | Underscore |
| | '\u00B7' |
| | '\u0300' .. '\u036F' |
| | '\u203F' .. '\u2040' |
| ; |
| |
| fragment NameStartChar |
| : 'A' .. 'Z' |
| | 'a' .. 'z' |
| | '\u00C0' .. '\u00D6' |
| | '\u00D8' .. '\u00F6' |
| | '\u00F8' .. '\u02FF' |
| | '\u0370' .. '\u037D' |
| | '\u037F' .. '\u1FFF' |
| | '\u200C' .. '\u200D' |
| | '\u2070' .. '\u218F' |
| | '\u2C00' .. '\u2FEF' |
| | '\u3001' .. '\uD7FF' |
| | '\uF900' .. '\uFDCF' |
| | '\uFDF0' .. '\uFFFD' |
| ; |
| // ignores | ['\u10000-'\uEFFFF] ; |
| // ----------------------------------- |
| // Types |
| |
| fragment Int |
| : 'int' |
| ; |
| // ----------------------------------- |
| // Symbols |
| |
| fragment Esc |
| : '\\' |
| ; |
| |
| fragment Colon |
| : ':' |
| ; |
| |
| fragment DColon |
| : '::' |
| ; |
| |
| fragment SQuote |
| : '\'' |
| ; |
| |
| fragment DQuote |
| : '"' |
| ; |
| |
| fragment LParen |
| : '(' |
| ; |
| |
| fragment RParen |
| : ')' |
| ; |
| |
| fragment LBrace |
| : '{' |
| ; |
| |
| fragment RBrace |
| : '}' |
| ; |
| |
| fragment LBrack |
| : '[' |
| ; |
| |
| fragment RBrack |
| : ']' |
| ; |
| |
| fragment RArrow |
| : '->' |
| ; |
| |
| fragment Lt |
| : '<' |
| ; |
| |
| fragment Gt |
| : '>' |
| ; |
| |
| fragment Equal |
| : '=' |
| ; |
| |
| fragment Question |
| : '?' |
| ; |
| |
| fragment Star |
| : '*' |
| ; |
| |
| fragment Plus |
| : '+' |
| ; |
| |
| fragment PlusAssign |
| : '+=' |
| ; |
| |
| fragment Underscore |
| : '_' |
| ; |
| |
| fragment Pipe |
| : '|' |
| ; |
| |
| fragment Dollar |
| : '$' |
| ; |
| |
| fragment Comma |
| : ',' |
| ; |
| |
| fragment Semi |
| : ';' |
| ; |
| |
| fragment Dot |
| : '.' |
| ; |
| |
| fragment Range |
| : '..' |
| ; |
| |
| fragment At |
| : '@' |
| ; |
| |
| fragment Pound |
| : '#' |
| ; |
| |
| fragment Tilde |
| : '~' |
| ; |
| |