Generate parsing constructors and parsing code

Also generate some runtime support code such exceptions, value
parsers, etc.

1 files changed, 177 insertions, 0 deletions

diff --git a/cli/runtime-header.cxx b/cli/runtime-header.cxx
new file mode 100644
index 0000000..87cdf11
--- /dev/null
+++ b/cli/runtime-header.cxx
@@ -0,0 +1,177 @@
+// file      : cli/runtime-header.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009 Code Synthesis Tools CC
+// license   : MIT; see accompanying LICENSE file
+
+#include "runtime-header.hxx"
+
+using namespace std;
+
+void
+generate_runtime_header_decl (context& ctx)
+{
+  ostream& os (ctx.os);
+
+  os << "#include <iosfwd>" << endl
+     << "#include <string>" << endl
+     << "#include <exception>" << endl
+     << endl;
+
+  os << "namespace cli"
+     << "{";
+
+  // unknown_mode
+  //
+  os << "class unknown_mode"
+     << "{"
+     << "public:"
+     << "enum value"
+     << "{"
+     << "skip," << endl
+     << "stop," << endl
+     << "fail" << endl
+     << "};"
+     << "unknown_mode (value v)" << endl
+     << ": v_ (v) {}"
+     << "operator value () const {return v_;}"
+     << "private:" << endl
+     << "value v_;"
+     << "};";
+
+  // Exceptions.
+  //
+
+  os << "// Exceptions." << endl
+     << "//" << endl
+     << endl;
+
+  os << "class exception: public std::exception"
+     << "{"
+     << "public:" << endl
+     << "virtual void" << endl
+     << "print (std::ostream&) const = 0;"
+     << "};";
+
+  os << "inline std::ostream&" << endl
+     << "operator<< (std::ostream& os, const exception& e)"
+     << "{"
+     << "e.print (os);"
+     << "return os;"
+     << "}";
+
+  os << "class unknown_option: public exception"
+     << "{"
+     << "public:" << endl
+     << "virtual" << endl
+     << "~unknown_option () throw ();"
+     << endl
+     << "unknown_option (const std::string& option)" << endl
+     << ": option_ (option)"
+     << "{"
+     << "}"
+     << "const std::string&" << endl
+     << "option () const"
+     << "{"
+     << "return option_;"
+     << "}"
+     << "virtual void" << endl
+     << "print (std::ostream&) const;"
+     << endl
+     << "virtual const char*" << endl
+     << "what () const throw ();"
+     << endl
+     << "private:" << endl
+     << "std::string option_;"
+     << "};";
+
+  os << "class unknown_argument: public exception"
+     << "{"
+     << "public:" << endl
+     << "virtual" << endl
+     << "~unknown_argument () throw ();"
+     << endl
+     << "unknown_argument (const std::string& argument)" << endl
+     << ": argument_ (argument)"
+     << "{"
+     << "}"
+     << "const std::string&" << endl
+     << "argument () const"
+     << "{"
+     << "return argument_;"
+     << "}"
+     << "virtual void" << endl
+     << "print (std::ostream&) const;"
+     << endl
+     << "virtual const char*" << endl
+     << "what () const throw ();"
+     << endl
+     << "private:" << endl
+     << "std::string argument_;"
+     << "};";
+
+  os << "class missing_value: public exception"
+     << "{"
+     << "public:" << endl
+     << "virtual" << endl
+     << "~missing_value () throw ();"
+     << endl
+     << "missing_value (const std::string& option)" << endl
+     << ": option_ (option)"
+     << "{"
+     << "}"
+     << "const std::string&" << endl
+     << "option () const"
+     << "{"
+     << "return option_;"
+     << "}"
+     << "virtual void" << endl
+     << "print (std::ostream&) const;"
+     << endl
+     << "virtual const char*" << endl
+     << "what () const throw ();"
+     << endl
+     << "private:" << endl
+     << "std::string option_;"
+     << "};";
+
+  os << "class invalid_value: public exception"
+     << "{"
+     << "public:" << endl
+     << "virtual" << endl
+     << "~invalid_value () throw ();"
+     << endl
+     << "invalid_value (const std::string& option," << endl
+     << "const std::string& value)" << endl
+     << ": option_ (option),"
+     << "  value_ (value)"
+     << "{"
+     << "}"
+     << "const std::string&" << endl
+     << "option () const"
+     << "{"
+     << "return option_;"
+     << "}"
+     << "const std::string&" << endl
+     << "value () const"
+     << "{"
+     << "return value_;"
+     << "}"
+     << "virtual void" << endl
+     << "print (std::ostream&) const;"
+     << endl
+     << "virtual const char*" << endl
+     << "what () const throw ();"
+     << endl
+     << "private:" << endl
+     << "std::string option_;"
+     << "std::string value_;"
+     << "};";
+
+  os << "}"; // namespace cli
+}
+
+void
+generate_runtime_header_impl (context& ctx)
+{
+  ostream& os (ctx.os);
+}