Initial checkin of lldb code from internal Apple repo.

llvm-svn: 105619

1 files changed, 148 insertions, 0 deletions

diff --git a/lldb/source/Commands/CommandObjectSyntax.cpp b/lldb/source/Commands/CommandObjectSyntax.cpp
new file mode 100644
index 00000000000..b1fc42f7637
--- /dev/null
+++ b/lldb/source/Commands/CommandObjectSyntax.cpp
@@ -0,0 +1,148 @@
+//===-- CommandObjectSyntax.cpp ---------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CommandObjectSyntax.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Core/Args.h"
+#include "lldb/Core/Options.h"
+
+#include "lldb/Interpreter/CommandInterpreter.h"
+#include "lldb/Interpreter/CommandReturnObject.h"
+#include "lldb/Interpreter/CommandObjectMultiword.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+//-------------------------------------------------------------------------
+// CommandObjectSyntax
+//-------------------------------------------------------------------------
+
+CommandObjectSyntax::CommandObjectSyntax () :
+    CommandObject ("syntax",
+                     "Shows the correct syntax for a given debugger command.",
+                     "syntax <command>")
+{
+}
+
+CommandObjectSyntax::~CommandObjectSyntax()
+{
+}
+
+
+bool
+CommandObjectSyntax::OldExecute
+(
+    Args& command,
+    CommandContext *context,
+    CommandInterpreter *interpreter,
+    CommandReturnObject &result
+)
+{
+    CommandObject *cmd_obj;
+
+    if (command.GetArgumentCount() != 0)
+    {
+        cmd_obj = interpreter->GetCommandObject(command.GetArgumentAtIndex(0));
+        if (cmd_obj)
+        {
+            Stream &output_strm = result.GetOutputStream();
+            if (cmd_obj->GetOptions() != NULL)
+            {
+                output_strm.Printf ("\nSyntax: %s\n", cmd_obj->GetSyntax());
+                //cmd_obj->GetOptions()->GenerateOptionUsage (output_strm, cmd_obj);
+                output_strm.Printf ("(Try 'help %s' for more information on command options syntax.)\n",
+                                    cmd_obj->GetCommandName());
+                result.SetStatus (eReturnStatusSuccessFinishNoResult);
+            }
+            else
+            {
+                output_strm.Printf ("\nSyntax: %s\n", cmd_obj->GetSyntax());
+                result.SetStatus (eReturnStatusSuccessFinishNoResult);
+            }
+        }
+        else
+        {
+            result.AppendErrorWithFormat ("'%s' is not a known command.\n", command.GetArgumentAtIndex(0));
+            result.AppendError ("Try 'help' to see a current list of commands.");
+            result.SetStatus (eReturnStatusFailed);
+        }
+    }
+    else
+    {
+        result.AppendError ("Must call 'syntax' with a valid command.");
+        result.SetStatus (eReturnStatusFailed);
+    }
+    return result.Succeeded();
+}
+
+bool
+CommandObjectSyntax::Execute (Args &command, CommandContext *context, CommandInterpreter *interpreter, 
+                              CommandReturnObject &result)
+{
+    CommandObject::CommandMap::iterator pos;
+    CommandObject *cmd_obj;
+    const int argc = command.GetArgumentCount();
+
+    if (argc > 0)
+    {
+        cmd_obj = interpreter->GetCommandObject (command.GetArgumentAtIndex(0));
+        bool all_okay = true;
+        for (int i = 1; i < argc; ++i)
+        {
+            std::string sub_command = command.GetArgumentAtIndex (i);
+            if (! cmd_obj->IsMultiwordObject())
+                all_okay = false;
+            else
+            {
+                pos = ((CommandObjectMultiword *) cmd_obj)->m_subcommand_dict.find (sub_command);
+                if (pos != ((CommandObjectMultiword *) cmd_obj)->m_subcommand_dict.end())
+                    cmd_obj = pos->second.get();
+                else
+                    all_okay = false;
+            }
+        }
+        
+        if (all_okay && (cmd_obj != NULL))
+        {
+            Stream &output_strm = result.GetOutputStream();
+            if (cmd_obj->GetOptions() != NULL)
+            {
+                output_strm.Printf ("\nSyntax: %s\n", cmd_obj->GetSyntax());
+                //cmd_obj->GetOptions()->GenerateOptionUsage (output_strm, cmd_obj);
+                output_strm.Printf ("(Try 'help %s' for more information on command options syntax.)\n",
+                                    cmd_obj->GetCommandName());
+                result.SetStatus (eReturnStatusSuccessFinishNoResult);
+            }
+            else
+            {
+                output_strm.Printf ("\nSyntax: %s\n", cmd_obj->GetSyntax());
+                result.SetStatus (eReturnStatusSuccessFinishNoResult);
+            }
+        }
+        else
+        {
+            std::string cmd_string;
+            command.GetCommandString (cmd_string);
+            result.AppendErrorWithFormat ("'%s' is not a known command.\n", cmd_string.c_str());
+            result.AppendError ("Try 'help' to see a current list of commands.");
+            result.SetStatus (eReturnStatusFailed);
+        }
+    }
+    else
+    {
+        result.AppendError ("Must call 'syntax' with a valid command.");
+        result.SetStatus (eReturnStatusFailed);
+    }
+
+    return result.Succeeded();
+}