tests/simple/scopes.v

   1 module scopes_test_01(input [3:0] k, output reg [15:0] x, y);
   2         function [15:0] func_01;
   3                 input [15:0] x, y;
   4                 begin
   5                         func_01 = x + y;
   6                         begin:blk
   7                                 reg [15:0] x;
   8                                 x = y;
   9                                 func_01 = func_01 ^ x;
  10                         end
  11                         func_01 = func_01 ^ x;
  12                 end
  13         endfunction
  14
  15         function [15:0] func_02;
  16                 input [15:0] x, y;
  17                 begin
  18                         func_02 = x - y;
  19                         begin:blk
  20                                 reg [15:0] func_02;
  21                                 func_02 = 0;
  22                         end
  23                 end
  24         endfunction
  25
  26         task task_01;
  27                 input [3:0] a;
  28                 reg [15:0] y;
  29                 begin
  30                         y = a * 23;
  31                         x = x + y;
  32                 end
  33         endtask
  34
  35         task task_02;
  36                 input [3:0] a;
  37                 begin:foo
  38                         reg [15:0] x, z;
  39                         x = y;
  40                         begin:bar
  41                                 reg [15:0] x;
  42                                 x = 77 + a;
  43                                 z = -x;
  44                         end
  45                         y = x ^ z;
  46                 end
  47         endtask
  48
  49         always @* begin
  50                 x = func_01(11, 22);
  51                 y = func_02(33, 44);
  52                 task_01(k);
  53                 task_02(k);
  54                 begin:foo
  55                         reg [15:0] y;
  56                         y = x;
  57                         y = y + k;
  58                         x = y;
  59                 end
  60                 x = func_01(y, x);
  61                 y = func_02(y, x);
  62         end
  63 endmodule