feat: 数组类型语法 [T; N] 改为 T[N] 后置语法

test/programs/18_array.l

@@ -1,5 +1,5 @@
 fn main() -> i64 {
-    let arr: [i64; 3] = arr;
+    let arr: i64[3] = arr;
     arr[0] = 10;
     arr[1] = 20;
     arr[2] = 30;

test/programs/24_array_struct.l

@@ -1,7 +1,7 @@
 struct Point { x: i64, y: i64 }
 
 fn main() -> i64 {
-    let arr: [Point; 2] = arr;
+    let arr: Point[2] = arr;
     arr[0] = Point { x: 10, y: 20 };
     arr[1] = Point { x: 30, y: 40 };
     print_i64(arr[0].x);

test/test_codegen.c

@@ -292,13 +292,13 @@ void test_codegen_array() {
 
     /* 构造 AST:
        fn main() -> i64 {
-           let arr: [i64; 3] = arr;
+           let arr: i64[3] = arr;
            arr[0] = 10;
            print_i64(arr[0]);
            return 0;
        }
     */
-    // let arr: [i64; 3] = arr;
+    // let arr: i64[3] = arr;
     AstNode* arr_init = ast_make_ident(&a, "arr", loc_at(1, 1));
     AstNode* let_stmt = ast_make_let(&a, "arr", TYPE_ARRAY, true, false,
                                       arr_init, NULL, TYPE_I64, NULL, 3, loc_at(1, 1));

test/test_sema.c

@@ -265,7 +265,7 @@ void test_array_ok() {
     Arena a = arena_create(1);
     size_t tc; ErrorInfo lex_err = {0};
     Token* toks = lex(&a,
-        "fn main() { let arr: [i64; 3] = arr; arr[0]; return; }",
+        "fn main() { let arr: i64[3] = arr; arr[0]; return; }",
         "test", &tc, &lex_err);
     ASSERT(toks != NULL);
     ErrorInfo parse_err = {0};
@@ -282,7 +282,7 @@ void test_array_index_type_error() {
     Arena a = arena_create(1);
     size_t tc; ErrorInfo lex_err = {0};
     Token* toks = lex(&a,
-        "fn main() { let arr: [i64; 3] = arr; arr[true]; return; }",
+        "fn main() { let arr: i64[3] = arr; arr[true]; return; }",
         "test", &tc, &lex_err);
     ASSERT(toks != NULL);
     ErrorInfo parse_err = {0};
@@ -316,7 +316,7 @@ void test_array_assign_ok() {
     Arena a = arena_create(1);
     size_t tc; ErrorInfo lex_err = {0};
     Token* toks = lex(&a,
-        "fn main() { let arr: [i64; 3] = arr; arr[0] = 42; return; }",
+        "fn main() { let arr: i64[3] = arr; arr[0] = 42; return; }",
         "test", &tc, &lex_err);
     ASSERT(toks != NULL);
     ErrorInfo parse_err = {0};