2 files changed, 28 insertions, 1 deletions
diff --git a/src/ast/ast.c b/src/ast/ast.c
index f4922a6..439a9f5 100644
--- a/src/ast/ast.c
+++ b/src/ast/ast.c
@@ -100,6 +100,7 @@ int is_integer_type(Type *t)
             t->kind == TYPE_I64 || t->kind == TYPE_U64 || t->kind == TYPE_USIZE ||
             t->kind == TYPE_ISIZE || t->kind == TYPE_BYTE || t->kind == TYPE_RUNE ||
             t->kind == TYPE_UINT || t->kind == TYPE_I128 || t->kind == TYPE_U128 ||
+            t->kind == TYPE_BITINT || t->kind == TYPE_UBITINT ||
             (t->kind == TYPE_STRUCT && t->name &&
              (0 == strcmp(t->name, "int8_t") || 0 == strcmp(t->name, "uint8_t") ||
               0 == strcmp(t->name, "int16_t") || 0 == strcmp(t->name, "uint16_t") ||
@@ -262,6 +263,18 @@ static char *type_to_string_impl(Type *t)
         return xstrdup("int");
     case TYPE_FLOAT:
         return xstrdup("float");
+    case TYPE_BITINT:
+    {
+        char *res = xmalloc(32);
+        sprintf(res, "i%d", t->array_size);
+        return res;
+    }
+    case TYPE_UBITINT:
+    {
+        char *res = xmalloc(32);
+        sprintf(res, "u%d", t->array_size);
+        return res;
+    }
 
     case TYPE_POINTER:
     {
@@ -452,6 +465,18 @@ static char *type_to_c_string_impl(Type *t)
         return xstrdup("int");
     case TYPE_FLOAT:
         return xstrdup("float");
+    case TYPE_BITINT:
+    {
+        char *res = xmalloc(32);
+        sprintf(res, "_BitInt(%d)", t->array_size);
+        return res;
+    }
+    case TYPE_UBITINT:
+    {
+        char *res = xmalloc(40);
+        sprintf(res, "unsigned _BitInt(%d)", t->array_size);
+        return res;
+    }
 
     case TYPE_POINTER:
     {
diff --git a/src/ast/ast.h b/src/ast/ast.h
index a868bf0..71d9943 100644
--- a/src/ast/ast.h
+++ b/src/ast/ast.h
@@ -59,6 +59,8 @@ typedef enum
     TYPE_FUNCTION, ///< Function pointer or reference.
     TYPE_GENERIC,  ///< Generic type parameter (T).
     TYPE_ALIAS,    ///< Opaque type alias.
+    TYPE_BITINT,   ///< C23 _BitInt(N).
+    TYPE_UBITINT,  ///< C23 unsigned _BitInt(N).
     TYPE_UNKNOWN   ///< Unknown/unresolved type.
 } TypeKind;
 
@@ -75,7 +77,7 @@ typedef struct Type
     int is_const;           ///< 1 if const-qualified.
     int is_explicit_struct; ///< 1 if defined with "struct" keyword explicitly.
     int is_raw;             // Raw function pointer (fn*)
-    int array_size;         ///< Size for fixed-size arrays.
+    int array_size;         ///< Size for fixed-size arrays. For TYPE_BITINT, this is the bit width.
     union
     {
         int is_varargs;  ///< 1 if function type is variadic.