01: /*
02: * FindBugs - Find bugs in Java programs
03: * Copyright (C) 2003,2004 University of Maryland
04: *
05: * This library is free software; you can redistribute it and/or
06: * modify it under the terms of the GNU Lesser General Public
07: * License as published by the Free Software Foundation; either
08: * version 2.1 of the License, or (at your option) any later version.
09: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public
16: * License along with this library; if not, write to the Free Software
17: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18: */
19:
20: package edu.umd.cs.findbugs;
21:
22: import org.apache.bcel.classfile.Method;
23: import org.apache.bcel.generic.InstructionHandle;
24:
25: import edu.umd.cs.findbugs.ba.BasicBlock;
26: import edu.umd.cs.findbugs.ba.Location;
27:
28: /**
29: * The site of a method call.
30: */
31: public class CallSite {
32: private final Method method;
33: private final Location location;
34:
35: /**
36: * Constructor.
37: *
38: * @param method the method containing the call site
39: * @param basicBlock the basic block where the call site is located
40: * @param handle the instruction which performs the call
41: */
42: public CallSite(Method method, BasicBlock basicBlock,
43: InstructionHandle handle) {
44: this .method = method;
45: this .location = new Location(handle, basicBlock);
46: }
47:
48: /**
49: * Get the method containing the call site.
50: */
51: public Method getMethod() {
52: return method;
53: }
54:
55: /**
56: * Get the Location (basic block and instruction) where the call site is located.
57: */
58: public Location getLocation() {
59: return location;
60: }
61:
62: /**
63: * Get the basic block where the call site is located.
64: */
65: public BasicBlock getBasicBlock() {
66: return location.getBasicBlock();
67: }
68:
69: /**
70: * Get the instruction which performs the call.
71: */
72: public InstructionHandle getHandle() {
73: return location.getHandle();
74: }
75:
76: @Override
77: public int hashCode() {
78: return System.identityHashCode(method)
79: ^ getBasicBlock().getLabel()
80: ^ System.identityHashCode(location.getHandle());
81: }
82:
83: @Override
84: public boolean equals(Object o) {
85: if (!(o instanceof CallSite))
86: return false;
87: CallSite other = (CallSite) o;
88: return method == other.method
89: && getBasicBlock() == other.getBasicBlock()
90: && getHandle() == other.getHandle();
91: }
92: }
93:
94: // vim:ts=4
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