[Fb-contrib-commit] SF.net SVN: fb-contrib: [577] trunk/fb-contrib/src/com/mebigfatguy/fbcontrib

[<dbr...@us...>]

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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