pascalkuthe
commented
1 year ago I will look into the parser crash, thanks for the report.
However this file will not work with OpenVAF regardless. It uses many Verilog-A features that are currently not supported and very hard to support in a simulator independent manner.
Currently events other than @(intial_step) and @(final_step) are not supported because those only work during transient (during AC simulations and HB isimulations these don't make sense).
Same for the transition filter used here. That filter can fundemental not work with AC and HB simulations. Because of the way OSDI is structured OpenVAF can't really support that right now.
If there is enough interest/funding in the future we might look into extending OpenVAF/OSDI to support that but currently there are no plans as we are focused on compact models which should never use these language features anyways.
dwarning
The attached simple switch.va got panick with v 22.12.0.
dietmar@modsys:~/Projects$ RUST_BACKTRACE=1 openvaf -I .. switch.va thread 'main' panicked at 'the parser seems stuck', openvaf/parser/src/parser.rs:51:9 stack backtrace: 0: rust_begin_unwind at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:584:5 1: core::panicking::panic_fmt at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/panicking.rs:142:14 2: parser::parser::Parser::nth at /io/openvaf/parser/src/parser.rs:51:9 3: parser::parser::Parser::current at /io/openvaf/parser/src/parser.rs:42:9 4: parser::parser::Parser::at_ts at /io/openvaf/parser/src/parser.rs:80:24 5: parser::grammar::stmts::event_stmt at /io/openvaf/parser/src/grammar/stmts.rs:68:16 6: parser::grammar::stmts::stmt at /io/openvaf/parser/src/grammar/stmts.rs:23:18 note: Some details are omitted, run withRUST_BACKTRACE=fullfor a verbose backtrace. Abgebrochen (Speicherabzug geschrieben)switch.va.txt