1 /* 2 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #pragma once 27 #include <iomanip> 28 #include <stack> 29 30 struct SchemaCursor { 31 private: 32 std::stack<const char *> where; 33 34 public: 35 char *ptr; 36 37 SchemaCursor(char *ptr); 38 39 virtual ~SchemaCursor(); 40 41 void in(const char *location); 42 43 void out(); 44 45 private: 46 SchemaCursor *skipWhiteSpace(); 47 48 SchemaCursor *skipIdentifier(); 49 50 public: 51 void step(int count); 52 53 bool peekAlpha(); 54 55 bool peekDigit(); 56 57 bool is(char ch); 58 59 bool isColon(); 60 61 bool expect(char ch, const char *context, int line); 62 63 bool expect(char ch, int line); 64 65 bool expectDigit(const char *context, int line); 66 67 bool expectAlpha(const char *context, int line); 68 69 bool isEither(char ch1, char ch2, char *actual); 70 71 void expectEither(char ch1, char ch2, char *actual, int line); 72 73 int getInt(); 74 75 long getLong(); 76 77 char *getIdentifier(); 78 79 void error(std::ostream &ostream, const char *file, int line, const char *str) const; 80 };