Author: Gongyu Deng
Date: 2020-08-11T10:27:04+02:00
New Revision: 31fd64ac57a2005c0691b8870e28b4421cf67047

URL: 
https://github.com/llvm/llvm-project/commit/31fd64ac57a2005c0691b8870e28b4421cf67047
DIFF: 
https://github.com/llvm/llvm-project/commit/31fd64ac57a2005c0691b8870e28b4421cf67047.diff

LOG: [lldb] tab completion for 'command delete/unalias'

Provided dedicated tab completions for `command delete/unalias`.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D81128

Added: 
    

Modified: 
    lldb/include/lldb/Interpreter/CommandInterpreter.h
    lldb/source/Commands/CommandObjectCommands.cpp
    lldb/test/API/functionalities/completion/TestCompletion.py

Removed: 
    


################################################################################
diff  --git a/lldb/include/lldb/Interpreter/CommandInterpreter.h 
b/lldb/include/lldb/Interpreter/CommandInterpreter.h
index 72638f3d807f..6ef22c1a28c1 100644
--- a/lldb/include/lldb/Interpreter/CommandInterpreter.h
+++ b/lldb/include/lldb/Interpreter/CommandInterpreter.h
@@ -501,6 +501,12 @@ class CommandInterpreter : public Broadcaster,
     return m_user_dict;
   }
 
+  const CommandObject::CommandMap &GetCommands() const {
+    return m_command_dict;
+  }
+
+  const CommandObject::CommandMap &GetAliases() const { return m_alias_dict; }
+
   /// Specify if the command interpreter should allow that the user can
   /// specify a custom exit code when calling 'quit'.
   void AllowExitCodeOnQuit(bool allow);

diff  --git a/lldb/source/Commands/CommandObjectCommands.cpp 
b/lldb/source/Commands/CommandObjectCommands.cpp
index eaf22344fafa..92730b6111bb 100644
--- a/lldb/source/Commands/CommandObjectCommands.cpp
+++ b/lldb/source/Commands/CommandObjectCommands.cpp
@@ -618,6 +618,17 @@ class CommandObjectCommandsUnalias : public 
CommandObjectParsed {
 
   ~CommandObjectCommandsUnalias() override = default;
 
+  void
+  HandleArgumentCompletion(CompletionRequest &request,
+                           OptionElementVector &opt_element_vector) override {
+    if (!m_interpreter.HasCommands() || request.GetCursorIndex() != 0)
+      return;
+
+    for (const auto &ent : m_interpreter.GetAliases()) {
+      request.TryCompleteCurrentArg(ent.first, ent.second->GetHelp());
+    }
+  }
+
 protected:
   bool DoExecute(Args &args, CommandReturnObject &result) override {
     CommandObject::CommandMap::iterator pos;
@@ -699,6 +710,18 @@ class CommandObjectCommandsDelete : public 
CommandObjectParsed {
 
   ~CommandObjectCommandsDelete() override = default;
 
+  void
+  HandleArgumentCompletion(CompletionRequest &request,
+                           OptionElementVector &opt_element_vector) override {
+    if (!m_interpreter.HasCommands() || request.GetCursorIndex() != 0)
+      return;
+
+    for (const auto &ent : m_interpreter.GetCommands()) {
+      if (ent.second->IsRemovable())
+        request.TryCompleteCurrentArg(ent.first, ent.second->GetHelp());
+    }
+  }
+
 protected:
   bool DoExecute(Args &args, CommandReturnObject &result) override {
     CommandObject::CommandMap::iterator pos;

diff  --git a/lldb/test/API/functionalities/completion/TestCompletion.py 
b/lldb/test/API/functionalities/completion/TestCompletion.py
index 3e7878dcbdaa..99dcda4b4cf2 100644
--- a/lldb/test/API/functionalities/completion/TestCompletion.py
+++ b/lldb/test/API/functionalities/completion/TestCompletion.py
@@ -401,6 +401,13 @@ def test_command_script_delete(self):
         self.runCmd("command script add -h test_desc -f none -s current 
usercmd1")
         self.check_completion_with_desc('command script delete ', 
[['usercmd1', 'test_desc']])
 
+    def test_command_delete(self):
+        self.runCmd(r"command regex test_command s/^$/finish/ 
's/([0-9]+)/frame select %1/'")
+        self.complete_from_to('command delete test_c', 'command delete 
test_command')
+
+    def test_command_unalias(self):
+        self.complete_from_to('command unalias ima', 'command unalias image')
+
     def test_completion_description_commands(self):
         """Test descriptions of top-level command completions"""
         self.check_completion_with_desc("", [


        
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