[Soot-list] How to obtain try and catch block

[Y.T. Chris TANG]

Hi all, 
     How do you detect the try-catch-finally block in the method body? 
Today, I find my program does not process try-catch block instead it deems 
try-catch as a method invoke. I check the jimple code
public void reduce(org.apache.hadoop.io.Text, java.lang.Iterable, org.apache
.hadoop.mapreduce.Reducer$Context) throws java.io.IOException, java.lang.
InterruptedException
    {
        WordCount2$IntSumReducer r0;
        org.apache.hadoop.io.Text r1;
        java.lang.Iterable r2;
        org.apache.hadoop.mapreduce.Reducer$Context r3;
        org.apache.hadoop.io.IntWritable r4, $r7, $r8;
        java.util.Iterator r5;
        boolean $z0;
        java.lang.Object $r6;
        int $i0, i1;


        r0 := @this: WordCount2$IntSumReducer;


        r1 := @parameter0: org.apache.hadoop.io.Text;


        r2 := @parameter1: java.lang.Iterable;


        r3 := @parameter2: org.apache.hadoop.mapreduce.Reducer$Context;


        i1 = 0;


        r5 = interfaceinvoke r2.<java.lang.Iterable: java.util.Iterator 
iterator()>();


        goto label2;


     label1:
        $r6 = interfaceinvoke r5.<java.util.Iterator: java.lang.Object next
()>();


        r4 = (org.apache.hadoop.io.IntWritable) $r6;


        $i0 = virtualinvoke r4.<org.apache.hadoop.io.IntWritable: int get
()>();


        i1 = i1 + $i0;


     label2:
        $z0 = interfaceinvoke r5.<java.util.Iterator: boolean hasNext()>();


        if $z0 != 0 goto label1;


        $r7 = r0.<WordCount2$IntSumReducer: org.apache.hadoop.io.IntWritable 
result>;


        virtualinvoke $r7.<org.apache.hadoop.io.IntWritable: void set(int)>(
i1);


        $r8 = r0.<WordCount2$IntSumReducer: org.apache.hadoop.io.IntWritable 
result>;


        virtualinvoke r3.<org.apache.hadoop.mapreduce.Reducer$Context: void 
write(java.lang.Object,java.lang.Object)>(r1, $r8);


        return;
    }


    public volatile void reduce(java.lang.Object, java.lang.Iterable, org.
apache.hadoop.mapreduce.Reducer$Context) throws java.io.IOException, java.
lang.InterruptedException
    {
        WordCount2$IntSumReducer r0;
        java.lang.Object r1;
        java.lang.Iterable r2, $r5;
        org.apache.hadoop.mapreduce.Reducer$Context r3, $r4;
        org.apache.hadoop.io.Text $r6;


        r0 := @this: WordCount2$IntSumReducer;


        r1 := @parameter0: java.lang.Object;


        r2 := @parameter1: java.lang.Iterable;


        r3 := @parameter2: org.apache.hadoop.mapreduce.Reducer$Context;


        $r6 = (org.apache.hadoop.io.Text) r1;


        $r5 = (java.lang.Iterable) r2;


        $r4 = (org.apache.hadoop.mapreduce.Reducer$Context) r3;


        virtualinvoke r0.<WordCount2$IntSumReducer: void reduce(org.apache.
hadoop.io.Text,java.lang.Iterable,org.apache.hadoop.mapreduce.
Reducer$Context)>($r6, $r5, $r4);


        return;
    }
When back to my source code it is a try-catch block instead of method 
invocation. 
public void reduce(Text key, Iterable<IntWritable> values,

 

                       Context context 

                       ) throws IOException, InterruptedException { 

      int sum = 0; 

      for (IntWritable val : values) { 

        sum += val.get(); 

      } 

      result.set(sum); 

      context.write(key, result); 

    }

    Therefore, you can see that regard this piece of code as a method 
invoke seems incorrect. 

    How to distinguish the *try-catch block* with *the method invocation*. 


Thanks

Best

Chris.


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