[Lldb-commits] [lldb] [lldb/Commands] Add `scripting template list` command with auto discovery (PR #97273)

[Jonas Devlieghere via lldb-commits]

================
@@ -127,6 +130,157 @@ class CommandObjectScriptingRun : public CommandObjectRaw {
   CommandOptions m_options;
 };
 
+#pragma mark CommandObjectScriptingTemplateList
+
+#define LLDB_OPTIONS_scripting_template_list
+#include "CommandOptions.inc"
+
+class CommandObjectScriptingTemplateList : public CommandObjectParsed {
+public:
+  CommandObjectScriptingTemplateList(CommandInterpreter &interpreter)
+      : CommandObjectParsed(
+            interpreter, "scripting template list",
+            "List all the available scripting affordances templates. ",
+            "scripting template list [--language <scripting-language> --]") {}
+
+  ~CommandObjectScriptingTemplateList() override = default;
+
+  Options *GetOptions() override { return &m_options; }
+
+  class CommandOptions : public Options {
+  public:
+    CommandOptions() = default;
+    ~CommandOptions() override = default;
+    Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
+                          ExecutionContext *execution_context) override {
+      Status error;
+      const int short_option = m_getopt_table[option_idx].val;
+
+      switch (short_option) {
+      case 'l':
+        m_language = (lldb::ScriptLanguage)OptionArgParser::ToOptionEnum(
+            option_arg, GetDefinitions()[option_idx].enum_values,
+            eScriptLanguageNone, error);
+        if (!error.Success())
+          error.SetErrorStringWithFormat("unrecognized value for language '%s'",
+                                         option_arg.str().c_str());
+        break;
+      default:
+        llvm_unreachable("Unimplemented option");
+      }
+
+      return error;
+    }
+
+    void OptionParsingStarting(ExecutionContext *execution_context) override {
+      m_language = lldb::eScriptLanguageDefault;
+    }
+
+    llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
+      return llvm::ArrayRef(g_scripting_template_list_options);
+    }
+
+    lldb::ScriptLanguage m_language = lldb::eScriptLanguageDefault;
+  };
+
+protected:
+  void DoExecute(Args &command, CommandReturnObject &result) override {
+    Stream &s = result.GetOutputStream();
+    s.Printf("Available scripted extension templates:");
+
+    auto print_field = [&s](llvm::StringRef key, llvm::StringRef value,
+                            bool check_validity = false) {
+      if (!check_validity || !value.empty()) {
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JDevlieghere wrote:

What's `check_validity`? It doesn't look like it's ever set.

https://github.com/llvm/llvm-project/pull/97273