support range for string parameters

[gjcoram]

error: unexpected token ''{'; expected '(', ''{', system function identifier, identifier, literal,
'~', '!', '+' or '-'
--> /home/gjcoram/modeling/cmc_qa/cmcqa/model_qa/veriloga/vacode/param_example2.va:18:36
|
18 | parameter string type = "NPN" from '{ "NPN", "PNP" };
| ^^ unexpected_token

error: could not compile param_example2.va due to 1 previous errors

[gjcoram]

I also tried the old syntax:
parameter string type = "NPN" from { "NPN", "PNP" };

[gjcoram]

diff --git a/openvaf/parser/src/grammar/items.rs b/openvaf/parser/src/grammar/items.rs
old mode 100644
new mode 100755
index f1e65e5..28152a7
--- a/openvaf/parser/src/grammar/items.rs
+++ b/openvaf/parser/src/grammar/items.rs
@@ -121,7 +121,16 @@ fn constraint(p: &mut Parser) {
m.abandon(p);
return;
}
- range_or_expr(p);
+ if p.eat(T!["'{"]) || p.eat(T!['{']) {
+ // array range (for string parameters)
+ expr(p);
+ while p.eat(T![,]) {
+ expr(p);
+ }
+ p.expect(T!['}']);
+ } else {
+ range_or_expr(p);
+ }
m.complete(p, CONSTRAINT);
}