impr: Handle demangling of identifiers without leading underscore

plugins/builtin/CMakeLists.txt

@@ -48,6 +48,8 @@ add_imhex_plugin(
         source/content/window_decoration.cpp
         source/content/data_information_sections.cpp
 
+        source/content/helpers/demangle.cpp
+
         source/content/data_processor_nodes/basic_nodes.cpp
         source/content/data_processor_nodes/control_nodes.cpp
         source/content/data_processor_nodes/decode_nodes.cpp

plugins/builtin/include/content/helpers/demangle.hpp

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <string>
+
+namespace hex::plugin::builtin {
+
+    std::string demangle(const std::string &mangled);
+
+}

plugins/builtin/source/content/command_line_interface.cpp

@@ -1,5 +1,6 @@
 #include <content/command_line_interface.hpp>
 #include <content/providers/file_provider.hpp>
+#include <content/helpers/demangle.hpp>
 
 #include <hex/api/content_registry.hpp>
 #include <hex/api/imhex_api.hpp>
@@ -348,7 +349,7 @@ namespace hex::plugin::builtin {
             std::exit(EXIT_FAILURE);
         }
 
-        log::println("{}", llvm::demangle(args[0]));
+        log::println("{}", hex::plugin::builtin::demangle(args[0]));
         std::exit(EXIT_SUCCESS);
     }
 

plugins/builtin/source/content/helpers/demangle.cpp

@@ -0,0 +1,17 @@
+#include <content/helpers/demangle.hpp>
+#include <llvm/Demangle/Demangle.h>
+
+namespace hex::plugin::builtin {
+
+    std::string demangle(const std::string &mangled) {
+        std::string result = llvm::demangle(mangled);
+        if (result.empty() || result == mangled)
+            result = llvm::demangle("_" + mangled);
+
+        if (result.empty() || result == ("_" + mangled))
+            result = mangled;
+
+        return result;
+    }
+
+}

plugins/builtin/source/content/pl_builtin_functions.cpp

@@ -7,7 +7,7 @@
 #include <pl/core/token.hpp>
 #include <pl/core/evaluator.hpp>
 
-#include <llvm/Demangle/Demangle.h>
+#include <content/helpers/demangle.hpp>
 #include <pl/patterns/pattern.hpp>
 
 namespace hex::plugin::builtin {
@@ -75,7 +75,7 @@ namespace hex::plugin::builtin {
             ContentRegistry::PatternLanguage::addFunction(nsHexDec, "demangle", FunctionParameterCount::exactly(1), [](Evaluator *, auto params) -> std::optional<Token::Literal> {
                 const auto mangledString = params[0].toString(false);
 
-                return llvm::demangle(mangledString);
+                return hex::plugin::builtin::demangle(mangledString);
             });
         }
 

plugins/builtin/source/content/tools/demangler.cpp

@@ -1,7 +1,7 @@
 #include <hex/helpers/utils.hpp>
 #include <hex/api/localization_manager.hpp>
 
-#include <llvm/Demangle/Demangle.h>
+#include <content/helpers/demangle.hpp>
 
 #include <imgui.h>
 #include <hex/ui/imgui_imhex_extensions.h>
@@ -31,7 +31,7 @@ namespace hex::plugin::builtin {
         static float prevWindowWidth;
 
         if (ImGui::InputTextWithHint("hex.builtin.tools.demangler.mangled"_lang, "Itanium, MSVC, Dlang & Rust", mangledName)) {
-            demangledName = llvm::demangle(mangledName);
+            demangledName = hex::plugin::builtin::demangle(mangledName);
 
             if (demangledName == mangledName) {
                 demangledName = "???";

plugins/builtin/source/content/views/view_find.cpp

@@ -12,7 +12,7 @@
 #include <string>
 #include <utility>
 
-#include <llvm/Demangle/Demangle.h>
+#include <content/helpers/demangle.hpp>
 #include <boost/regex.hpp>
 
 namespace hex::plugin::builtin {
@@ -68,7 +68,7 @@ namespace hex::plugin::builtin {
                                 ImGui::TableNextColumn();
                                 ImGuiExt::TextFormatted("[ 0x{:08X} - 0x{:08X} ]", region.getStartAddress(), region.getEndAddress());
 
-                                auto demangledValue = llvm::demangle(value);
+                                auto demangledValue = hex::plugin::builtin::demangle(value);
 
                                 if (value != demangledValue) {
                                     ImGui::TableNextRow();
@@ -602,7 +602,7 @@ namespace hex::plugin::builtin {
             if (ImGui::MenuItem("hex.builtin.view.find.context.copy"_lang))
                 ImGui::SetClipboardText(value.c_str());
             if (ImGui::MenuItem("hex.builtin.view.find.context.copy_demangle"_lang))
-                ImGui::SetClipboardText(llvm::demangle(value).c_str());
+                ImGui::SetClipboardText(hex::plugin::builtin::demangle(value).c_str());
             if (ImGui::BeginMenu("hex.builtin.view.find.context.replace"_lang)) {
                 if (ImGui::BeginTabBar("##replace_tabs")) {
                     if (ImGui::BeginTabItem("hex.builtin.view.find.context.replace.hex"_lang)) {