From 7878653e8dbd65d94ea8ea8bae6e0afd3c3d0af3 Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Tue, 27 May 2025 23:02:19 +0200
Subject: fix: fix SEGFAULT on CxxDrv (AMD64), caused by a stack corruption.

refactor: Refactor LibCompiler's codebase, deperecate older C compilers,
and fully focusing on C++ now.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
---
 dev/LibCompiler/BasicString.h | 82 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 dev/LibCompiler/BasicString.h

(limited to 'dev/LibCompiler/BasicString.h')

diff --git a/dev/LibCompiler/BasicString.h b/dev/LibCompiler/BasicString.h
new file mode 100644
index 0000000..b69deae
--- /dev/null
+++ b/dev/LibCompiler/BasicString.h
@@ -0,0 +1,82 @@
+/*
+ *	========================================================
+ *
+ *	LibCompiler
+ * 	Copyright (C) 2024-2025 Amlal El Mahrouss, all rights reserved.
+ *
+ * 	========================================================
+ */
+
+#pragma once
+
+#include <LibCompiler/Defines.h>
+#include <LibCompiler/ErrorOr.h>
+
+namespace LibCompiler {
+class StringBuilder;
+class BasicString;
+
+/**
+ * @brief BasicString class, contains a C string and manages it.
+ * @note No need to manage it it's getting deleted by default.
+ */
+
+class BasicString final {
+ public:
+  explicit BasicString() = delete;
+
+  explicit BasicString(SizeType Sz) noexcept : m_Sz(Sz) {
+    m_Data = new CharType[Sz];
+    assert(m_Data);
+  }
+
+  ~BasicString() noexcept {
+    if (m_Data) {
+      memset(m_Data, 0, m_Sz);
+      delete[] m_Data;
+
+      m_Data = nullptr;
+    }
+  }
+
+  LIBCOMPILER_COPY_DEFAULT(BasicString);
+
+  CharType*       Data();
+  const CharType* CData() const;
+  SizeType        Length() const;
+
+  bool operator==(const CharType* rhs) const;
+  bool operator!=(const CharType* rhs) const;
+
+  bool operator==(const BasicString& rhs) const;
+  bool operator!=(const BasicString& rhs) const;
+
+  BasicString& operator+=(const CharType* rhs);
+  BasicString& operator+=(const BasicString& rhs);
+
+  operator bool() { return m_Data && m_Data[0] != 0; }
+
+  bool operator!() { return !m_Data || m_Data[0] == 0; }
+
+ private:
+  CharType* m_Data{nullptr};
+  SizeType  m_Sz{0};
+  SizeType  m_Cur{0};
+
+  friend class StringBuilder;
+};
+
+/**
+ * @brief StringBuilder class
+ * @note These results shall call be delete[] after they're used.
+ */
+struct StringBuilder final {
+  static BasicString     Construct(const CharType* data);
+  static const char* FromInt(const char* fmt, int n);
+  static const char* FromBool(const char* fmt, bool n);
+  static const char* Format(const char* fmt, const char* from);
+  static bool        Equals(const char* lhs, const char* rhs);
+};
+
+using PStringOr = ErrorOr<BasicString>;
+}  // namespace LibCompiler
-- 
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