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Support unpacked dimensions on typedef overwrites 

It is possible to declare a new typedef that shadows an existing typedef in
a higher level scope. E.g.

```
typedef int T;
module M;
  typedef real T;
endmodule
```

In the current implementation this only works as long as the new type is
a not an array type.

Update the parser to allow to specify unpacked dimension when overwriting
a typedef from a different scope.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This commit is contained in:
Lars-Peter Clausen 2022-03-22 12:00:54 +01:00
parent b3f7ce6020
commit 23e1143ad6
1 changed files with 3 additions and 3 deletions
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6
parse.y
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@ -2685,13 +2685,13 @@ type_declaration
/* If the IDENTIFIER already is a typedef, it is possible for this /* If the IDENTIFIER already is a typedef, it is possible for this
code to override the definition, but only if the typedef is code to override the definition, but only if the typedef is
inherited from a different scope. */ inherited from a different scope. */
| K_typedef data_type TYPE_IDENTIFIER ';' | K_typedef data_type TYPE_IDENTIFIER dimensions_opt ';'
{ perm_string name = lex_strings.make($3.text); { perm_string name = lex_strings.make($3.text);
if (pform_test_type_identifier_local(name)) { if (pform_test_type_identifier_local(name)) {
yyerror(@3, "error: Typedef identifier \"%s\" is already a type name.", $3.text); yyerror(@3, "error: Typedef identifier \"%s\" is already a type name.", $3.text);
delete $4;
} else { } else {
pform_set_typedef(name, $2, NULL); pform_set_typedef(name, $2, $4);
} }
delete[]$3.text; delete[]$3.text;
} }