01: /*
02: [The "BSD licence"]
03: Copyright (c) 2005 Martin Traverso
04: All rights reserved.
05:
06: Redistribution and use in source and binary forms, with or without
07: modification, are permitted provided that the following conditions
08: are met:
09: 1. Redistributions of source code must retain the above copyright
10: notice, this list of conditions and the following disclaimer.
11: 2. Redistributions in binary form must reproduce the above copyright
12: notice, this list of conditions and the following disclaimer in the
13: documentation and/or other materials provided with the distribution.
14: 3. The name of the author may not be used to endorse or promote products
15: derived from this software without specific prior written permission.
16:
17: THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20: IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21: INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22: NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27: */
28:
29: package org.antlr.codegen;
30:
31: public class RubyTarget extends Target {
32: public String getTargetCharLiteralFromANTLRCharLiteral(
33: CodeGenerator generator, String literal) {
34: literal = literal.substring(1, literal.length() - 1);
35:
36: String result = "?";
37:
38: if (literal.equals("\\")) {
39: result += "\\\\";
40: } else if (literal.equals(" ")) {
41: result += "\\s";
42: } else if (literal.startsWith("\\u")) {
43: result = "0x" + literal.substring(2);
44: } else {
45: result += literal;
46: }
47:
48: return result;
49: }
50:
51: public int getMaxCharValue(CodeGenerator generator) {
52: // we don't support unicode, yet.
53: return 0xFF;
54: }
55:
56: public String getTokenTypeAsTargetLabel(CodeGenerator generator,
57: int ttype) {
58: String name = generator.grammar.getTokenDisplayName(ttype);
59: // If name is a literal, return the token type instead
60: if (name.charAt(0) == '\'') {
61: return generator.grammar.computeTokenNameFromLiteral(ttype,
62: name);
63: }
64: return name;
65: }
66: }
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