InputInnerAssignment


1   package com.puppycrawl.tools.checkstyle.coding;
2   
3   public class InputInnerAssignment
4   {
5       void innerAssignments()
6       {
7           int a;
8           int b;
9           int c;
10  
11          a = b = c = 1; // flag two inner assignments
12  
13          String   s = Integer.toString(b = 2); // flag inner assignment
14  
15          Integer   i = new Integer  (a += 5); // flag inner assigment
16  
17          c = b++; // common practice, don't flag
18                   // even though technically an assigment to b
19  
20          for (int j = 0; j < 6; j += 2) { // common practice, don't flag
21              a += j;
22          }
23      }
24  
25      public void demoBug1195047Comment3()
26      {
27          // inner assignment should flag all assignments to b or bb but none of those to i or j
28          int y = 1;
29          int b = 0;
30          boolean bb;
31          int i;
32  
33          if (bb = false) {}
34          for (i = 0; bb = false; i = i + 1) {}
35          while (bb = false) {}
36          if ((bb = false)) {}
37          for (int j = 0; (bb = false); j += 1) {}
38          while ((bb = false)) {}
39          i = (bb = false) ? (b = 2) : (b += 1);
40          i = (b += 1) + (b -= 1);
41          do {i += 1;} while (bb = false);
42      }
43  
44      public static void demoInputStreamIdiom(java.io.InputStream   is) throws java.io.IOException  
45      {
46          int b;
47          while ((b = is.read()) != -1) // common idiom to avoid clumsy loop control logic, don't flag (make configurable later)
48          {
49              // work with b
50          }
51      }
52  
53      public static void demoNoBrace()
54      {
55          // code that doesn't contain braces around conditional code
56          // results in a parse tree without SLISTs
57          // no assignement should be flagged here
58          int sum = 0;
59  
60          for (int i = 0; i < 3; i++)
61              sum = sum + i;
62  
63          if (sum > 4)
64              sum += 2;
65          else if (sum < 2)
66              sum += 1;
67          else
68              sum += 100;
69  
70          while (sum > 4)
71              sum -= 1;
72  
73          do
74              sum = sum + 1;
75          while (sum < 6);
76      }
77  
78      @SuppressWarnings  (value = "unchecked")
79      public java.util.Collection  <Object  > allParams() {
80          java.util.ArrayList   params = new java.util.ArrayList  ();
81          params.add("one");
82          params.add("two");
83          return params;
84      }
85  }
86
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags