tools/coccinelle/hash_const.cocci

   1 //
   2 // Transition hash key signatures to take their argument as const.
   3 // Does not handle headers or weirdly named hash functions.
   4 //
   5 @noconst disable optional_qualifier@
   6 identifier A;
   7 identifier func =~ ".*key$|.*key_make$|.*hash_make$|.*hash_keymake$|.*hash_key$|.*hash_key.*";
   8 @@
   9
  10 - func (void *A)
  11 + func (const void *A)
  12   { ... }
  13
  14 @ depends on noconst disable optional_qualifier @
  15 identifier noconst.A;
  16 identifier noconst.func;
  17 identifier b;
  18 type T;
  19 @@
  20
  21 func( ... ) {
  22 <...
  23 -  T b = A;
  24 +  const T b = A;
  25 ...>
  26   }
  27
  28 @ depends on noconst disable optional_qualifier @
  29 identifier noconst.A;
  30 identifier noconst.func;
  31 identifier b;
  32 type T;
  33 @@
  34
  35 func(...)
  36   {
  37 <...
  38 -  T b = (T) A;
  39 +  const T b = A;
  40 ...>
  41   }
  42
  43 @ depends on noconst disable optional_qualifier @
  44 identifier noconst.A;
  45 identifier noconst.func;
  46 identifier b;
  47 type T;
  48 @@
  49
  50 func(...)
  51   {
  52 <...
  53 -  T b;
  54 +  const T b;
  55 ...
  56    b = A;
  57 ...>
  58   }
  59
  60 @ depends on noconst disable optional_qualifier @
  61 identifier noconst.A;
  62 identifier noconst.func;
  63 identifier b;
  64 type T;
  65 @@
  66
  67 func(...)
  68   {
  69 <...
  70 -  T b;
  71 +  const T b;
  72 ...
  73 -  b = (T) A;
  74 +  b = A;
  75 ...>
  76   }