Add language command and LanguageRuntime plugin changes to allow vending of command objects.

Differential Revision: http://reviews.llvm.org/D9402

llvm-svn: 236443

lldb/source/Commands/CommandObjectLanguage.cpp

@@ -0,0 +1,46 @@
+//===-- CommandObjectLanguage.cpp -------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/lldb-python.h"
+
+#include "CommandObjectLanguage.h"
+
+#include "lldb/Host/Host.h"
+
+#include "lldb/Interpreter/CommandInterpreter.h"
+#include "lldb/Interpreter/CommandReturnObject.h"
+
+#include "lldb/Target/LanguageRuntime.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+CommandObjectLanguage::CommandObjectLanguage (CommandInterpreter &interpreter) :
+CommandObjectMultiword (interpreter,
+                        "language",
+                        "A set of commands for managing language-specific functionality.'.",
+                        "language <language-name> <subcommand> [<subcommand-options>]"
+                        )
+{
+    //Let the LanguageRuntime populates this command with subcommands
+    LanguageRuntime::InitializeCommands(this);
+}
+
+void
+CommandObjectLanguage::GenerateHelpText (Stream &output_stream) {
+    CommandObjectMultiword::GenerateHelpText(output_stream);
+
+    output_stream << "\nlanguage name can be one of the following:\n";
+
+    LanguageRuntime::PrintAllLanguages(output_stream, "  ", "\n");
+}
+
+CommandObjectLanguage::~CommandObjectLanguage ()
+{
+}