| paul@0 | 1 | #!/usr/bin/env python |
| paul@0 | 2 | |
| paul@0 | 3 | """ |
| paul@0 | 4 | Error classes. |
| paul@0 | 5 | |
| paul@0 | 6 | Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012 |
| paul@0 | 7 | 2014, 2016 Paul Boddie <paul@boddie.org.uk> |
| paul@0 | 8 | |
| paul@0 | 9 | This program is free software; you can redistribute it and/or modify it under |
| paul@0 | 10 | the terms of the GNU General Public License as published by the Free Software |
| paul@0 | 11 | Foundation; either version 3 of the License, or (at your option) any later |
| paul@0 | 12 | version. |
| paul@0 | 13 | |
| paul@0 | 14 | This program is distributed in the hope that it will be useful, but WITHOUT |
| paul@0 | 15 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| paul@0 | 16 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
| paul@0 | 17 | details. |
| paul@0 | 18 | |
| paul@0 | 19 | You should have received a copy of the GNU General Public License along with |
| paul@0 | 20 | this program. If not, see <http://www.gnu.org/licenses/>. |
| paul@0 | 21 | """ |
| paul@0 | 22 | |
| paul@0 | 23 | class ProcessingError(Exception): |
| paul@0 | 24 | |
| paul@0 | 25 | "A processing error." |
| paul@0 | 26 | |
| paul@0 | 27 | pass |
| paul@0 | 28 | |
| paul@0 | 29 | class ProgramError(ProcessingError): |
| paul@0 | 30 | |
| paul@0 | 31 | "A general program processing error." |
| paul@0 | 32 | |
| paul@0 | 33 | def __init__(self, message): |
| paul@0 | 34 | self.message = message |
| paul@0 | 35 | |
| paul@0 | 36 | def __repr__(self): |
| paul@0 | 37 | return "%s(%r)" % (self.__class__.__name__, self.message) |
| paul@0 | 38 | |
| paul@0 | 39 | def __str__(self): |
| paul@0 | 40 | return self.message |
| paul@0 | 41 | |
| paul@0 | 42 | class NodeProcessingError(ProcessingError): |
| paul@0 | 43 | |
| paul@0 | 44 | "A processing error associated with a particular program node." |
| paul@0 | 45 | |
| paul@0 | 46 | def __init__(self, message, unit_name=None, astnode=None): |
| paul@0 | 47 | self.message = message |
| paul@0 | 48 | self.unit_name = unit_name |
| paul@0 | 49 | self.astnode = astnode |
| paul@0 | 50 | |
| paul@0 | 51 | def get_lineno(self, node): |
| paul@0 | 52 | |
| paul@0 | 53 | "Search for line number information associated with 'node'." |
| paul@0 | 54 | |
| paul@0 | 55 | if node is None: |
| paul@0 | 56 | return None |
| paul@0 | 57 | |
| paul@0 | 58 | lineno = node.lineno |
| paul@0 | 59 | if lineno is not None: |
| paul@0 | 60 | return lineno |
| paul@0 | 61 | else: |
| paul@0 | 62 | for child in node.getChildNodes(): |
| paul@0 | 63 | lineno = self.get_lineno(child) |
| paul@0 | 64 | if lineno is not None: |
| paul@0 | 65 | return lineno |
| paul@0 | 66 | return None |
| paul@0 | 67 | |
| paul@0 | 68 | def __repr__(self): |
| paul@0 | 69 | return "%s(%r, %r, %r)" % (self.__class__.__name__, self.message, self.unit_name, self.astnode) |
| paul@0 | 70 | |
| paul@0 | 71 | def __str__(self): |
| paul@0 | 72 | lineno = self.get_lineno(self.astnode) |
| paul@0 | 73 | return "Error in %s%s: %s" % (self.unit_name, lineno and (" at line %s" % lineno) or "", self.message) |
| paul@0 | 74 | |
| paul@0 | 75 | class InspectError(NodeProcessingError): |
| paul@0 | 76 | |
| paul@0 | 77 | "An error during the module inspection process." |
| paul@0 | 78 | |
| paul@0 | 79 | pass |
| paul@0 | 80 | |
| paul@87 | 81 | class DeduceError(ProgramError): |
| paul@71 | 82 | |
| paul@71 | 83 | "An error during the deduction process." |
| paul@71 | 84 | |
| paul@87 | 85 | def __str__(self): |
| paul@87 | 86 | return "Error in deduction: %s" % self.message |
| paul@71 | 87 | |
| paul@0 | 88 | class TranslateError(NodeProcessingError): |
| paul@0 | 89 | |
| paul@0 | 90 | "An error during the module translation process." |
| paul@0 | 91 | |
| paul@0 | 92 | pass |
| paul@0 | 93 | |
| paul@0 | 94 | # vim: tabstop=4 expandtab shiftwidth=4 |
