csguth/liberty

Spirit X3 Liberty Format Parser. opensourceliberty.org for more info.

Liberty Parser

This is an open-source Parser for the Liberty Standard Cell Library format.

Please, refer to Open Source Liberty for format specification and reference parser.

Usage

Use the Api function to parse a file. The function liberty_parse receives a pair of iterators as input and writes the AST (abstract-syntax tree) on a liberty::ast::Library object. e.g.,:

  #include <fstream>
  #include <vector>
  #include <algorithm>
  #include <iterator>
  #include <iostream>
  #include "LibertyParser.hpp"
  
  int main() {
    const liberty::ast::Library library = [&]() {
      liberty::ast::Library library_;
      std::ifstream in("file.lib", std::fstream::in);
      const std::vector<char> buffer = []() {
        std::vector<char> buffer_(std::istreambuf_iterator<char>(in), std::istreambuf_iterator<char>());
        std::replace(buffer_.begin(), buffer_.end(), '\n', ' ');
        std::replace(buffer_.begin(), buffer_.end(), '\\', ' ');
        return buffer_;
      } ();
      auto first = buffer.begin();
      auto result = liberty::ast::liberty_parse(first, buffer.end(), library_);
      return library_;
    } ();
    const int numberOfCells = [&]() {
      int numberOfCells_ = 0;
      liberty::ast::Visitor visitor;
      visitor.onCell([&](const liberty::Cell&) { ++numberOfCells_; });
      visitor(library);
      return numberOfCells_;
    } ();
    std::cout << "This Library has " << numberOfCells << " cells." << std::endl;
    return 0;
}

Build Instructions

Requirements

• A compatible C++14 compiler.
• Boost >=1.60
• CMake >=2.18

First Time

• Pull further dependencies:

git submodule update --init --recursive --depth 1

• Invoke CMake

cmake .

Building and Testing

# Build
make

# Test
./Liberty_test

This Library is still in development. Feel free to create an issue.

liberty's Issues

Update CMake, Boost version

Google still returns this repo at the top of my search queries.
It can still be helpful for others as well, so maybe if someone has time to update CMake and Boost version, it would be nice.

What g++ is required to build this

Hello,
this looks like an interesting library.
My apologies for asking a rather basic c++ question.
What is your build environment for this:
I've tried to build it with g++ 4.7, 5.3,,7.3 but I get build errors from the boost libraries (e.g. auto statement expects ")" ... )
Also, I tried MinGW on Windows.
A bit of help to get going would be great, e.g. what is the required g++ version?

Thanks a lot!