Positional Association in Instantiations

Most VHDL designers prefer using named associations in port maps, generic maps, and parameter lists in instantiations. This makes it a lot easier to spot wrong connections. Sigasi Visual HDL provides a linting rule that checks whether positional associations are used. This rule is disabled by default, but you can change the severity of this check via Preferences > Sigasi > VHDL > Errors/Warnings in the Style validation section.

architecture RTL of dut is

   component my_comp port (
      clk  : in  std_logic;
      rst  : in  std_logic;
      inp  : in  std_logic;
      outp : out std_logic);
   end component;

begin
   i_comp_1: my_comp port map( -- positional associations not recommended
      clk,
      rst,
      data_in(0),
      open
   );

   i_comp_2: my_comp port map( -- named associations recommended
      clk  => clk,
      rst  => rst,
      inp  => data_in(0),
      outp => open
   );
end architecture RTL;

Rule configuration

This rule can be disabled for your project, or its severity and parameters can be modified in the project linting settings. Alternatively, it can be manually configured with the following template:

164/severity/${path}={error|warning|info|ignore}