diff --git a/SLS_C/include/sls/lexer.h b/SLS_C/include/sls/lexer.h
index 8134950..b2fbfdb 100644
--- a/SLS_C/include/sls/lexer.h
+++ b/SLS_C/include/sls/lexer.h
@@ -31,6 +31,26 @@ typedef enum {
     TOKEN_TYPE_TUPLE,
 } TokenType;
 
+typedef enum {
+    ARRAY_IDENTIFIER,
+    ARRAY_I64,
+    ARRAY_I32,
+    ARRAY_I16,
+    ARRAY_I8,
+    ARRAY_U64,
+    ARRAY_U32,
+    ARRAY_U16,
+    ARRAY_U8,
+    ARRAY_FLOAT,
+    ARRAY_DOUBLE,
+    ARRAY_STRING,
+    ARRAY_BOOLEAN,
+    ARRAY_ARRAY,
+    ARRAY_TOKEN_STRING,
+    ARRAY_TYPE_TUPLE,
+    ARRAY_STRUCT_INLINE,
+} ArrayType;
+
 typedef struct {
     const char *name;
     size_t length;
@@ -58,22 +78,6 @@ typedef struct {
     size_t length;
 } StringLiteral;
 
-typedef struct {
-    TokenType type;
-    union {
-        Identifier *identifiers; // type == TOKEN_IDENTIFIER
-        IntegerLiteral *integer_literals; // type == TOKEN_INTEGER
-        float *float_literals; // type == TOKEN_FLOAT
-        double *double_literals; // type == TOKEN_DOUBLE
-        StringLiteral *string_literals; // type == TOKEN_STRING
-        uint8_t *boolean_literals; // type == TOKEN_BOOLEAN
-        ArrayLiteral *array_literals; // type == TOKEN_ARRAY
-        TokenString *token_strings; // type == TOKEN_TOKEN_STRING
-        TypeTuple *type_tuples; // type == TOKEN_TYPE_TUPLE
-    };
-    size_t length;
-} ArrayLiteral;
-
 typedef struct {
     const Token *tokens;
     size_t length;
@@ -86,6 +90,28 @@ typedef struct {
     size_t output_length;
 } TypeTuple;
 
+typedef struct {
+    TokenString values;
+    Identifier name;
+} StructInline;
+
+typedef struct ArrayLiteral {
+    ArrayType type;
+    union {
+        Identifier *identifiers; // type == ARRAY_IDENTIFIER
+        uint64_t *integer_literals; // type in { ARRAY_I64, ARRAY_I32, ARRAY_I16, ARRAY_I8, ARRAY_U64, ARRAY_U32, ARRAY_U16, ARRAY_U8, }
+        float *float_literals;     // type == ARRAY_FLOAT
+        double *double_literals; // type == ARRAY_DOUBLE
+        StringLiteral *string_literals; // type == ARRAY_STRING
+        uint8_t *boolean_literals; // type == ARRAY_BOOLEAN
+        ArrayLiteral *array_literals; // type == ARRAY_ARRAY
+        TokenString *token_strings; // type == ARRAY_TOKEN_STRING
+        TypeTuple *type_tuples; // type == ARRAY_TYPE_TUPLE
+        StructInline *type_tuples; // type == ARRAY_STRUCT_INLINE
+    };
+    size_t length;
+} ArrayLiteral;
+
 typedef struct {
     TokenType type;
     union {