[lldb/Interpreter] Make OptionGroupPythonClassWithDict options non-required

When using `OptionGroupPythonClassWithDict` options in an `OptionGroup`
with other `Options`, it can happen that the combinaison of some options
of each group makes the command invalid.

To solve that issue, this patch adds a bitmask argument to the
`OptionGroupPythonClassWithDict` constuctor that is used to mark each
option as required (or not).

If the `required_options` bitmask isn't passed to the constructor, the
class will keep its default behaviour, making the `--script-class` and
`--python-function` required.

rdar://65508855

Differential Revision: https://reviews.llvm.org/D97910

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

lldb/include/lldb/Interpreter/OptionGroupPythonClassWithDict.h

@@ -1,4 +1,4 @@
-//===-- OptionGroupPythonClassWithDict.h -------------------------------------*- C++ -*-===//
+//===-- OptionGroupPythonClassWithDict.h ------------------------*- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -9,9 +9,10 @@
 #ifndef LLDB_INTERPRETER_OPTIONGROUPPYTHONCLASSWITHDICT_H
 #define LLDB_INTERPRETER_OPTIONGROUPPYTHONCLASSWITHDICT_H
 
-#include "lldb/lldb-types.h"
 #include "lldb/Interpreter/Options.h"
+#include "lldb/Utility/Flags.h"
 #include "lldb/Utility/StructuredData.h"
+#include "lldb/lldb-types.h"
 
 namespace lldb_private {
 
@@ -23,12 +24,20 @@ namespace lldb_private {
 // StructuredData::Dictionary is constructed with those pairs.
 class OptionGroupPythonClassWithDict : public OptionGroup {
 public:
-  OptionGroupPythonClassWithDict(const char *class_use,
-                                 bool is_class = true,
-                                 int class_option = 'C',
-                                 int key_option = 'k', 
-                                 int value_option = 'v');
-                      
+  enum OptionKind {
+    eScriptClass    = 1 << 0,
+    eDictKey        = 1 << 1,
+    eDictValue      = 1 << 2,
+    ePythonFunction = 1 << 3,
+    eAllOptions     = (eScriptClass | eDictKey | eDictValue | ePythonFunction)
+  };
+
+  OptionGroupPythonClassWithDict(const char *class_use, bool is_class = true,
+                                 int class_option = 'C', int key_option = 'k',
+                                 int value_option = 'v',
+                                 uint16_t required_options = eScriptClass |
+                                                             ePythonFunction);
+
   ~OptionGroupPythonClassWithDict() override = default;
 
   llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
@@ -55,6 +64,7 @@ protected:
   std::string m_class_usage_text, m_key_usage_text, m_value_usage_text;
   bool m_is_class;
   OptionDefinition m_option_definition[4];
+  Flags m_required_options;
 };
 
 } // namespace lldb_private

lldb/source/Interpreter/OptionGroupPythonClassWithDict.cpp

@@ -13,12 +13,10 @@
 using namespace lldb;
 using namespace lldb_private;
 
-OptionGroupPythonClassWithDict::OptionGroupPythonClassWithDict
-    (const char *class_use,
-     bool is_class,
-     int class_option,
-     int key_option, 
-     int value_option) : m_is_class(is_class) {
+OptionGroupPythonClassWithDict::OptionGroupPythonClassWithDict(
+    const char *class_use, bool is_class, int class_option, int key_option,
+    int value_option, uint16_t required_options)
+    : m_is_class(is_class), m_required_options(required_options) {
   m_key_usage_text.assign("The key for a key/value pair passed to the "
                           "implementation of a ");
   m_key_usage_text.append(class_use);
@@ -36,7 +34,7 @@ OptionGroupPythonClassWithDict::OptionGroupPythonClassWithDict
   m_class_usage_text.append(".");
   
   m_option_definition[0].usage_mask = LLDB_OPT_SET_1;
-  m_option_definition[0].required = true;
+  m_option_definition[0].required = m_required_options.Test(eScriptClass);
   m_option_definition[0].long_option = "script-class";
   m_option_definition[0].short_option = class_option;
   m_option_definition[0].validator = nullptr;
@@ -47,7 +45,7 @@ OptionGroupPythonClassWithDict::OptionGroupPythonClassWithDict
   m_option_definition[0].usage_text = m_class_usage_text.data();
 
   m_option_definition[1].usage_mask = LLDB_OPT_SET_2;
-  m_option_definition[1].required = false;
+  m_option_definition[1].required = m_required_options.Test(eDictKey);
   m_option_definition[1].long_option = "structured-data-key";
   m_option_definition[1].short_option = key_option;
   m_option_definition[1].validator = nullptr;
@@ -58,7 +56,7 @@ OptionGroupPythonClassWithDict::OptionGroupPythonClassWithDict
   m_option_definition[1].usage_text = m_key_usage_text.data();
 
   m_option_definition[2].usage_mask = LLDB_OPT_SET_2;
-  m_option_definition[2].required = false;
+  m_option_definition[2].required = m_required_options.Test(eDictValue);
   m_option_definition[2].long_option = "structured-data-value";
   m_option_definition[2].short_option = value_option;
   m_option_definition[2].validator = nullptr;
@@ -69,7 +67,7 @@ OptionGroupPythonClassWithDict::OptionGroupPythonClassWithDict
   m_option_definition[2].usage_text = m_value_usage_text.data();
   
   m_option_definition[3].usage_mask = LLDB_OPT_SET_3;
-  m_option_definition[3].required = true;
+  m_option_definition[3].required = m_required_options.Test(ePythonFunction);
   m_option_definition[3].long_option = "python-function";
   m_option_definition[3].short_option = class_option;
   m_option_definition[3].validator = nullptr;
@@ -78,7 +76,6 @@ OptionGroupPythonClassWithDict::OptionGroupPythonClassWithDict
   m_option_definition[3].completion_type = 0;
   m_option_definition[3].argument_type = eArgTypePythonFunction;
   m_option_definition[3].usage_text = m_class_usage_text.data();
-
 }
 
 Status OptionGroupPythonClassWithDict::SetOptionValue(