Disclaimer

PROPRIETARY - Copyright - Yehowshua Immanuel

The Beginnings of a high-performance, low memory footprint VCD Viewer in Rust for massive multi-GB waveforms

Current Features

• very fast
• loads 400MB of VCD waveform per second on an 8 core 2017 desktop CPU with NVMe storage
• consumes roughly between 10 - 50MB of memory per GB of waveform

Planed Features

• elegant/pretty UI
• can be easily ported to work in browser via webassembly
• allows high-performance custom Rust plugins to manipulate and generate new waveforms live

Running

Make sure you have a test vcd file to get you started. You can grab a large VCD file from here.

The first build of the program may take some time.

cargo run --release test-vcd-files/aldec/SPI_Write.vcd

You can run all the tests with cargo test

TODO

• We need a way to merge lines.

• We need to start regression testing the parser over all files

• Decide if I want to return option types

• Propagate all to question mark unwrap types.

• Don't want variation in hh:mm:ss

• parser_atoms -> combinator_atoms

• make parse/types.rs

• remove/replace calls to match_not_empty

• Split parse.rs. It's getting too large.

• move list of files to separate test file/folder

• support parsing dates with commas

• Fix warning especially usage and restriction warnings once I'm able to successfully parse all sample VCDs.

• Consolidate error messages and add cursors.

• Consider what to do with don't care values will probably just convert them to strings for now.

• Include line and possible column numbers

• Change states to lowercase

• Take a look at GTKWave parser to compare effificiency.

• Send survey to community channel.

Probably No Longer Needed

• Should insert nodes in BFS order