First usable generator source.

Still issues with usage rules and error reporting, but functional.

examples/dc/dc.argspec

@@ -0,0 +1,19 @@
+Program:
+program dc
+version "dc (GNU bc 1.07.1) 1.4.1\n\nCopyright 1994, 1997, 1998, 2000, 2001, 2003-2006, 2008, 2010, 2012-2017 Free Software Foundation, Inc."
+license "This is free software; see the source for copying conditions.\nThere is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, to the extent permitted by law."
+help "Email bug reports to:  bug-dc@gnu.org"
+
+Usage:
+
+dc
+dc OPTIONS
+
+OPTIONS = --expression | --file
+
+Arguments:
+
+--help, -h, , "shows this help message"
+--version, -V, , "prints the version of the program"
+--expression, -e, EXPR, "evaluate expression"
+--file, -f, FILE, "evaluate contents of file"

examples/dc/main.cpp

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+#include "src/dcArgGrammarDriver.hpp"
+#include <sstream>
+
+using Result = dcArgGrammar::Driver::Result;
+
+int main(int argc, char* argv[]) {
+	dcArgGrammar::Driver driver{ argc, argv };
+	auto res = driver.parse();
+
+	if (res != Result::success) {
+		if (res == Result::completedAction)
+			return 0;
+
+		return -1;
+	}
+
+	return 0;
+}