01: // Copyright 2006 The Apache Software Foundation
02: //
03: // Licensed under the Apache License, Version 2.0 (the "License");
04: // you may not use this file except in compliance with the License.
05: // You may obtain a copy of the License at
06: //
07: // http://www.apache.org/licenses/LICENSE-2.0
08: //
09: // Unless required by applicable law or agreed to in writing, software
10: // distributed under the License is distributed on an "AS IS" BASIS,
11: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: // See the License for the specific language governing permissions and
13: // limitations under the License.
14:
15: package org.apache.tapestry.ioc;
16:
17: /**
18: * A kind of tag applied to other objects to identify where they came from, in terms of a file (the
19: * resource), a line number, and a column number. This is part of "line precise exception
20: * reporting", whereby errors at runtime can be tracked backwards to the files from which they were
21: * parsed or otherwise constructed.
22: *
23: *
24: */
25: public interface Location {
26: /** The resource from which the object tagged with a location was derived. */
27: Resource getResource();
28:
29: /**
30: * The line number within the resource, if known, or -1 otherwise.
31: */
32: int getLine();
33:
34: /**
35: * The column number within the line if known, or -1 otherwise.
36: */
37: int getColumn();
38: }
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