Revision: 577
Author: dbrosius
Date: 2006-08-01 18:05:27 -0700 (Tue, 01 Aug 2006)
ViewCVS: http://svn.sourceforge.net/fb-contrib/?rev=577&view=rev
Log Message:
-----------
Initial attempt at a first pass collector/not working yet
Added Paths:
-----------
trunk/fb-contrib/src/com/mebigfatguy/fbcontrib/collect/
trunk/fb-contrib/src/com/mebigfatguy/fbcontrib/collect/CollectStatistics.java
trunk/fb-contrib/src/com/mebigfatguy/fbcontrib/collect/Statistics.java
Added: trunk/fb-contrib/src/com/mebigfatguy/fbcontrib/collect/CollectStatistics.java
===================================================================
--- trunk/fb-contrib/src/com/mebigfatguy/fbcontrib/collect/CollectStatistics.java (rev 0)
+++ trunk/fb-contrib/src/com/mebigfatguy/fbcontrib/collect/CollectStatistics.java 2006-08-02 01:05:27 UTC (rev 577)
@@ -0,0 +1,75 @@
+package com.mebigfatguy.fbcontrib.collect;
+
+import org.apache.bcel.classfile.Method;
+
+import edu.umd.cs.findbugs.BugReporter;
+import edu.umd.cs.findbugs.BytecodeScanningDetector;
+import edu.umd.cs.findbugs.ba.ClassContext;
+
+public class CollectStatistics extends BytecodeScanningDetector
+{
+ private static final int SG_INVALID = -1;
+ private static final int SG_SAW_NOTHING = 0;
+ private static final int SG_SAW_ALOAD_0 = 1;
+ private static final int SG_SAW_GETFIELD = 2;
+ private static final int SG_SAW_RETURN = 3;
+
+ private Statistics statistics = Statistics.getStatistics();
+ private int sgState;
+
+ public CollectStatistics(BugReporter bugReporter) {
+
+ }
+
+ @Override
+ public void visitClassContext(ClassContext classContext) {
+
+ }
+
+ @Override
+ public void visitMethod(Method obj) {
+ String methodName = obj.getName();
+ String signature = obj.getSignature();
+ if (methodName.startsWith("get")
+ && (signature.indexOf("()") >= 0)
+ && (signature.indexOf(")V") < 0))
+ {
+ sgState = SG_SAW_NOTHING;
+ }
+ else
+ {
+ sgState = SG_INVALID;
+ }
+ }
+
+ @Override
+ public void sawOpcode(int seen) {
+ if (sgState != SG_INVALID)
+ sawSimpleGetter(seen);
+ }
+
+ private void sawSimpleGetter(int seen) {
+ switch (sgState) {
+ case SG_SAW_NOTHING:
+ if (seen == ALOAD_0)
+ sgState = SG_SAW_ALOAD_0;
+ else
+ sgState = SG_INVALID;
+ break;
+
+ case SG_SAW_ALOAD_0:
+ if (seen == GETFIELD)
+ sgState = SG_SAW_GETFIELD;
+ else
+ sgState = SG_INVALID;
+ break;
+
+ case SG_SAW_GETFIELD:
+ if ((seen >= IRETURN) && (seen <= ARETURN)) {
+ statistics.addSimpleGetter(getMethodName(), getMethodSig());
+ }
+ sgState = SG_INVALID;
+ break;
+ }
+ }
+}
Added: trunk/fb-contrib/src/com/mebigfatguy/fbcontrib/collect/Statistics.java
===================================================================
--- trunk/fb-contrib/src/com/mebigfatguy/fbcontrib/collect/Statistics.java (rev 0)
+++ trunk/fb-contrib/src/com/mebigfatguy/fbcontrib/collect/Statistics.java 2006-08-02 01:05:27 UTC (rev 577)
@@ -0,0 +1,29 @@
+package com.mebigfatguy.fbcontrib.collect;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class Statistics {
+
+ private static Statistics statistics = new Statistics();
+
+ private Set<String> simpleGetters = new HashSet<String>();
+
+
+ public static Statistics getStatistics()
+ {
+ return statistics;
+ }
+
+ public void clear() {
+ simpleGetters.clear();
+ }
+
+ public void addSimpleGetter(String methodName, String signature) {
+ simpleGetters.add(methodName + ":" + signature);
+ }
+
+ public boolean isSimpleGetter(String methodName, String signature) {
+ return simpleGetters.contains(methodName + ":" + signature);
+ }
+}
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