New backend: C++17 using std::variant - #567
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…arser.hpp instead of lang.tab.hpp
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The idea is to represent categories as
std::variant<Label,...>and ditch the visitor pattern (replace withstd::visit).Requires and includes PR #568 .
Features:
std::visitClassicPrettyPrinter,ContextFreePrettyPrinter,SyntaxPrinter(ASCII tree),HaskellPrinter--positions=startand--positions=range-fsanitize=addressandfsanitize=leakin system tests)MakefileREADME.mdtutorial