1324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver/* 2324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * [The "BSD license"] 3324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * Copyright (c) 2010 Terence Parr and Alan Condit 4324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * Copyright (c) 2006 Kay Roepke (Objective-C runtime) 5324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * All rights reserved. 6324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 7324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * Redistribution and use in source and binary forms, with or without 8324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * modification, are permitted provided that the following conditions 9324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * are met: 10324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 1. Redistributions of source code must retain the above copyright 11324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * notice, this list of conditions and the following disclaimer. 12324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 2. Redistributions in binary form must reproduce the above copyright 13324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * notice, this list of conditions and the following disclaimer in the 14324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * documentation and/or other materials provided with the distribution. 15324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 3. The name of the author may not be used to endorse or promote products 16324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * derived from this software without specific prior written permission. 17324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * 18324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver */ 29324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverpackage org.antlr.codegen; 30324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 31324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.Tool; 32324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.misc.Utils; 33324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.stringtemplate.v4.ST; 34324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport org.antlr.tool.Grammar; 35324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 36324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverimport java.io.IOException; 37324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 38324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruverpublic class ObjCTarget extends Target { 39324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver protected void genRecognizerHeaderFile(Tool tool, 40324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver CodeGenerator generator, 41324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver Grammar grammar, 42324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver ST headerFileST, 43324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver String extName) 44324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver throws IOException 45324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver { 46324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver generator.write(headerFileST, grammar.name + Grammar.grammarTypeToFileNameSuffix[grammar.type] + extName); 47324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 48324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 49324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public String getTargetCharLiteralFromANTLRCharLiteral(CodeGenerator generator, 50324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver String literal) 51324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver { 52324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (literal.startsWith("'\\u") ) { 53324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver literal = "0x" +literal.substring(3, 7); 54324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } else { 55324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver int c = literal.charAt(1); // TJP 56324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (c < 32 || c > 127) { 57324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver literal = "0x" + Integer.toHexString(c); 58324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 59324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 60324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 61324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return literal; 62324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 63324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 64324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver /** Convert from an ANTLR string literal found in a grammar file to 65324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * an equivalent string literal in the target language. For Java, this 66324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * is the translation 'a\n"' -> "a\n\"". Expect single quotes 67324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * around the incoming literal. Just flip the quotes and replace 68324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver * double quotes with \" 69324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver */ 70324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public String getTargetStringLiteralFromANTLRStringLiteral(CodeGenerator generator, 71324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver String literal) 72324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver { 73324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver literal = Utils.replace(literal,"\"","\\\""); 74324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver StringBuffer buf = new StringBuffer(literal); 75324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver buf.setCharAt(0,'"'); 76324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver buf.setCharAt(literal.length()-1,'"'); 77324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver buf.insert(0,'@'); 78324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return buf.toString(); 79324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 80324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 81324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver /** If we have a label, prefix it with the recognizer's name */ 82324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public String getTokenTypeAsTargetLabel(CodeGenerator generator, int ttype) { 83324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver String name = generator.grammar.getTokenDisplayName(ttype); 84324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver // If name is a literal, return the token type instead 85324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if ( name.charAt(0)=='\'' ) { 86324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return String.valueOf(ttype); 87324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 88324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return name; 89324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver //return generator.grammar.name + Grammar.grammarTypeToFileNameSuffix[generator.grammar.type] + "_" + name; 90324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver //return super.getTokenTypeAsTargetLabel(generator, ttype); 91324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver //return this.getTokenTextAndTypeAsTargetLabel(generator, null, ttype); 92324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 93324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 94324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver /** Target must be able to override the labels used for token types. Sometimes also depends on the token text.*/ 95324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver public String getTokenTextAndTypeAsTargetLabel(CodeGenerator generator, String text, int tokenType) { 96324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver String name = generator.grammar.getTokenDisplayName(tokenType); 97324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver // If name is a literal, return the token type instead 98324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if ( name.charAt(0)=='\'' ) { 99324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return String.valueOf(tokenType); 100324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 101324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver String textEquivalent = text == null ? name : text; 102324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver if (textEquivalent.charAt(0) >= '0' && textEquivalent.charAt(0) <= '9') { 103324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return textEquivalent; 104324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } else { 105324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver return generator.grammar.name + Grammar.grammarTypeToFileNameSuffix[generator.grammar.type] + "_" + textEquivalent; 106324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 107324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver } 108324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 109324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver} 110324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 111