1 files changed, 123 insertions, 0 deletions
diff --git a/include/lldb/Interpreter/CommandAlias.h b/include/lldb/Interpreter/CommandAlias.h
new file mode 100644
index 000000000000..d48719f821ec
--- /dev/null
+++ b/include/lldb/Interpreter/CommandAlias.h
@@ -0,0 +1,123 @@
+//===-- CommandAlias.h -----------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_CommandAlias_h_
+#define liblldb_CommandAlias_h_
+
+// C Includes
+// C++ Includes
+#include <memory>
+
+// Other libraries and framework includes
+// Project includes
+#include "lldb/lldb-forward.h"
+#include "lldb/Interpreter/Args.h"
+#include "lldb/Interpreter/CommandObject.h"
+
+namespace lldb_private {
+class CommandAlias : public CommandObject
+{
+public:
+    typedef std::unique_ptr<CommandAlias> UniquePointer;
+
+    CommandAlias (CommandInterpreter &interpreter,
+                  lldb::CommandObjectSP cmd_sp,
+                  const char *options_args,
+                  const char *name,
+                  const char *help = nullptr,
+                  const char *syntax = nullptr,
+                  uint32_t flags = 0);
+    
+    void
+    GetAliasExpansion (StreamString &help_string);
+    
+    bool
+    IsValid ()
+    {
+        return m_underlying_command_sp && m_option_args_sp;
+    }
+    
+    explicit operator bool ()
+    {
+        return IsValid();
+    }
+    
+    bool
+    WantsRawCommandString() override;
+    
+    bool
+    WantsCompletion() override;
+    
+    int
+    HandleCompletion (Args &input,
+                      int &cursor_index,
+                      int &cursor_char_position,
+                      int match_start_point,
+                      int max_return_elements,
+                      bool &word_complete,
+                      StringList &matches) override;
+    
+    int
+    HandleArgumentCompletion (Args &input,
+                              int &cursor_index,
+                              int &cursor_char_position,
+                              OptionElementVector &opt_element_vector,
+                              int match_start_point,
+                              int max_return_elements,
+                              bool &word_complete,
+                              StringList &matches) override;
+    
+    Options*
+    GetOptions() override;
+    
+    bool
+    IsAlias () override { return true; }
+    
+    bool
+    IsDashDashCommand () override;
+    
+    const char*
+    GetHelp () override;
+    
+    const char*
+    GetHelpLong () override;
+    
+    void
+    SetHelp (const char * str) override;
+    
+    void
+    SetHelpLong (const char * str) override;
+    
+    bool
+    Execute(const char *args_string, CommandReturnObject &result) override;
+    
+    lldb::CommandObjectSP GetUnderlyingCommand() { return m_underlying_command_sp; }
+    OptionArgVectorSP GetOptionArguments() { return m_option_args_sp; }
+    const char* GetOptionString() { return m_option_string.c_str(); }
+    
+    // this takes an alias - potentially nested (i.e. an alias to an alias)
+    // and expands it all the way to a non-alias command
+    std::pair<lldb::CommandObjectSP, OptionArgVectorSP>
+    Desugar ();
+    
+protected:
+    bool
+    IsNestedAlias ();
+    
+private:
+    lldb::CommandObjectSP m_underlying_command_sp;
+    std::string m_option_string;
+    OptionArgVectorSP m_option_args_sp ;
+    LazyBool m_is_dashdash_alias;
+    bool m_did_set_help : 1;
+    bool m_did_set_help_long : 1;
+};
+} // namespace lldb_private
+
+#endif // liblldb_CommandAlias_h_