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‎.gitignore‎

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/.vscode
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# patched
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libparse.h
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libparse.cc
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# swig
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libparse.py
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libparse_wrap.c
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libparse_wrap.cxx
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# python
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__pycache__
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# binaries
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*.out
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*.o
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*.a
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*.dylib
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*.so
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*.dll

‎.gitmodules‎

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[submodule "yosys"]
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path = yosys
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url = https://github.com/yosyshq/yosys

‎Makefile‎

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CXXFLAGS += -g -std=c++17 -I$(shell python3 -c "import sysconfig; print(sysconfig.get_path('include'))")
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all: _libparse.so
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_libparse.so: libparse.cc libparse_wrap.cxx libparse.h py_iostream.h
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$(CXX) -fPIC -c $(CXXFLAGS) -DFILTERLIB libparse.cc
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$(CXX) -fPIC -c $(CXXFLAGS) -DFILTERLIB libparse_wrap.cxx
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$(CXX) -shared libparse.o libparse_wrap.o -o $@
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libparse.py libparse_wrap.cxx: libparse.i libparse.h
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swig -c++ -python $<
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libparse.h: yosys/passes/techmap/libparse.h libparse.h.patch
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cp $< $@
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patch libparse.h libparse.h.patch
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libparse.cc: yosys/passes/techmap/libparse.cc
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cp $< $@
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patch libparse.cc libparse.cc.patch
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.PHONY: regen-patches
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regen-patches:
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diff yosys/passes/techmap/libparse.h libparse.h > libparse.h.patch || true
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diff yosys/passes/techmap/libparse.cc libparse.cc > libparse.cc.patch || true
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.PHONY: clean
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clean:
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rm -f libparse*.cc libparse*.cxx libparse.h libparse.py
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rm -f *.so *.o *.dylib *.dll

‎libparse.cc.patch‎

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< for (auto child : children)
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< delete child;
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< LibertyAst *LibertyAst::find(std::string name)
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---
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> std::shared_ptr<LibertyAst> LibertyAst::find(std::string name)
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< LibertyAst *LibertyParser::parse()
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---
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> std::shared_ptr<LibertyAst> LibertyParser::parse()
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< LibertyAst *ast = new LibertyAst;
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---
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> auto ast = std::make_shared<LibertyAst>();
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< LibertyAst *child = parse();
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---
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> auto child = parse();
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< LibertyAst *find_non_null(LibertyAst *node, const char *name)
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---
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> std::shared_ptr<LibertyAst> find_non_null(std::shared_ptr<LibertyAst> node, const char *name)
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< LibertyAst *ret = node->find(name);
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---
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> auto ret = node->find(name);
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< void event2vl(LibertyAst *ast, std::string &edge, std::string &expr)
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---
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> void event2vl(std::shared_ptr<LibertyAst> ast, std::string &edge, std::string &expr)
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< void gen_verilogsim_cell(LibertyAst *ast)
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---
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> void gen_verilogsim_cell(std::shared_ptr<LibertyAst> ast)
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< LibertyAst *dir = find_non_null(child, "direction");
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< LibertyAst *func = child->find("function");
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---
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> auto dir = find_non_null(child, "direction");
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> auto func = child->find("function");
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< void gen_verilogsim(LibertyAst *ast)
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---
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> void gen_verilogsim(std::shared_ptr<LibertyAst> ast)

‎libparse.h.patch‎

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1a2,20
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> Modifications performed by Efabless Corporation to use automatic memory
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> management. License follows:
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>
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> Copyright (C) 2023 Efabless Corporation
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>
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> Licensed under the Apache License, Version 2.0 (the "License");
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> you may not use this file except in compliance with the License.
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> You may obtain a copy of the License at
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>
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> http://www.apache.org/licenses/LICENSE-2.0
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>
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> Unless required by applicable law or agreed to in writing, software
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> distributed under the License is distributed on an "AS IS" BASIS,
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> WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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> See the License for the specific language governing permissions and
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> limitations under the License.
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> */
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>
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> /*
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> #include <memory>
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< std::vector<LibertyAst*> children;
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---
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> std::vector<std::shared_ptr<LibertyAst>> children;
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< LibertyAst *find(std::string name);
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---
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> std::shared_ptr<LibertyAst> find(std::string name);
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< LibertyAst *ast;
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---
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> std::shared_ptr<LibertyAst> ast;
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< ~LibertyParser() { if (ast) delete ast; }
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< LibertyAst *parse();
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---
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> std::shared_ptr<LibertyAst> parse();

‎libparse.i‎

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/* File: libparse.i */
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%module libparse
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%include <std_string.i>
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%include <std_vectora.i>
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%include <std_shared_ptr.i>
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%{
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#define SWIG_FILE_WITH_INIT
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#include <iostream>
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#include <memory>
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#include "libparse.h"
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#include "py_iostream.h"
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%}
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%shared_ptr(Yosys::LibertyAst)
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%immutable Yosys::LibertyParser::f;
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%template(VectorLibertyAstSP) std::vector< std::shared_ptr<Yosys::LibertyAst> >;
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%template(VectorStr) std::vector< std::string >;
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%typemap(in) std::istream& {
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try {
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$1 = new PyIStream($input);
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} catch (std::runtime_error &e) {
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PyErr_SetString(PyExc_TypeError, e.what());
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}
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}
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%typemap(freearg) std::istream& {
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delete $1;
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}
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%include "libparse.h"

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