Added reserved keywords checking helpers in `CCodeGenerator`.

src/CppParser/Sources.h

@@ -18,4 +18,10 @@ struct CS_API CS_VALUE_TYPE SourceLocation
     unsigned ID;
 };
 
+struct CS_API SourceRange
+{
+    SourceLocation beginLoc;
+    SourceLocation endLoc;
+};
+
 } }

src/Generator/Generators/C/CCodeGenerator.cs

@@ -244,5 +244,38 @@ namespace CppSharp.Generators.C
         {
             return true;
         }
+
+        static readonly List<string> CReservedKeywords = new List<string> {
+            // C99 6.4.1: Keywords.
+            "auto", "break", "case", "char", "const", "continue", "default",
+            "do", "double", "else", "enum", "extern", "float", "for", "goto",
+            "if", "inline", "int", "long", "register", "restrict", "return",
+            "short", "signed", "sizeof", "static", "struct", "switch",
+            "typedef", "union", "unsigned", "void", "volatile", "while",
+            "_Alignas", "_Alignof", "_Atomic", "_Bool", "_Complex",
+            "_Generic", "_Imaginary", "_Noreturn", "_Static_assert",
+             "_Thread_local", "__func__", "__objc_yes", "__objc_no",
+        };
+
+        public bool IsReservedKeywordC(string id) => CReservedKeywords.Contains(id);
+
+        static readonly List<string> CppReservedKeywords = new List<string> {
+             // C++ 2.11p1: Keywords.
+             "asm", "bool", "catch", "class", "const_cast", "delete",
+             "dynamic_cast", "explicit", "export", "false", "friend",
+             "mutable", "namespace", "new", "operator", "private",
+             "protected", "public", "reinterpret_cast", "static_cast",
+             "template", "this", "throw", "true", "try", "typename",
+             "typeid", "using", "virtual", "wchar_t",
+
+             // C++11 Keywords
+             "alignas", "alignof", "char16_t", "char32_t", "constexpr",
+             "decltype", "noexcept", "nullptr", "static_assert",
+             "thread_local"
+        };
+
+        public bool IsReservedKeywordCpp(string id) => CppReservedKeywords.Contains(id);
+
+        public bool IsReservedKeyword(string id) => IsReservedKeywordC(id) || IsReservedKeywordCpp(id);
     }
 }