add integer type checking function

src/symbol.cpp

@@ -0,0 +1,58 @@
+#include "symbol.hpp"
+#include <cstring>
+#include <dwarf.h>
+#include <format>
+#include <iostream>
+#include <libdwarf.h>
+
+bool Symbol::is_integer_type(Dwarf_Debug dbg, Dwarf_Die die) {
+  Dwarf_Error err;
+  Dwarf_Attribute type_attr;
+  Dwarf_Off type_offset;
+  Dwarf_Die type_die;
+  Dwarf_Half tag;
+
+  // Get the type attribute
+  if (dwarf_attr(die, DW_AT_type, &type_attr, &err) != DW_DLV_OK)
+    return false;
+
+  // Get the type offset
+  if (dwarf_global_formref(type_attr, &type_offset, &err) != DW_DLV_OK) {
+    dwarf_dealloc(dbg, type_attr, DW_DLA_ATTR);
+    return false;
+  }
+
+  dwarf_dealloc(dbg, type_attr, DW_DLA_ATTR);
+
+  // Get the type DIE
+  if (dwarf_offdie_b(dbg, type_offset, true, &type_die, &err) != DW_DLV_OK)
+    return false;
+
+  // Get the tag of the type DIE
+  if (dwarf_tag(type_die, &tag, &err) != DW_DLV_OK) {
+    dwarf_dealloc(dbg, type_die, DW_DLA_DIE);
+    return false;
+  }
+
+  // Check if it's a base type (integer types are base types)
+  if (tag != DW_TAG_base_type) {
+    dwarf_dealloc(dbg, type_die, DW_DLA_DIE);
+    return false;
+  }
+
+  // Get the base type name to verify it's an integer type
+  char *type_name = nullptr;
+  bool is_integer = false;
+
+  if (dwarf_diename(type_die, &type_name, &err) == DW_DLV_OK && type_name) {
+    std::string name(type_name);
+    dwarf_dealloc(dbg, type_name, DW_DLA_STRING);
+
+    // Check for common integer type names
+    is_integer = (name.find("int") != std::string::npos ||
+                  name.find("char") != std::string::npos);
+  }
+
+  dwarf_dealloc(dbg, type_die, DW_DLA_DIE);
+  return is_integer;
+}