MinLang

• Define the minimal language, which accept only empty string and nothing else.
• grammar.txt contains no production rule but parsergen still generates nontrivial code from it.
• %SHOW_UNDEFINED is defined to demonstrate all possible places to insert user-defined code. For instance in Parser.cpp:

  // This file is fully generated by running parsergen v1.6.0
  // with grammer definition file "grammar.txt"
  // %HEADERS_FOR_CPP undefined (expanded here otherwise)
  #include "Parser.h"
  #include "ParserIdDef.h"
  #include <bux/ImplLR1.h>
  #include <bux/XException.h>
  
  namespace {
  
  using namespace bux::LR1;
  // %LOCAL_CPP undefined (expanded here otherwise)
  
  ...
  
  } // namespace
  // %SCOPED_CPP_HEAD undefined (expanded here otherwise)
  
  ::C_Parser::C_Parser(): bux::LR1::C_Parser(g_policy) {}
  // %SCOPED_CPP_TAIL undefined (expanded here otherwise)