Improve dims error message format

src/libasr/asr_utils.h

@@ -1091,15 +1091,15 @@ static inline std::string extract_dim_value(ASR::expr_t* dim) {
 
 static inline std::string type_encode_dims(size_t n_dims, ASR::dimension_t* m_dims )
 {
-    std::string dims_str = "";
+    std::string dims_str = "[";
     for( size_t i = 0; i < n_dims; i++ ) {
         ASR::dimension_t dim = m_dims[i];
-        dims_str += "[";
-        // dims_str += extract_dim_value(dim.m_start);
-        // dims_str += ",";
         dims_str += extract_dim_value(dim.m_length);
-        dims_str += "]";
+        if (i + 1 < n_dims) {
+            dims_str += ",";
+        }
     }
+    dims_str += "]";
     return dims_str;
 }
 

tests/reference/asr-arrays_05-ec8fbd5.json

@@ -8,6 +8,6 @@
     "stdout": null,
     "stdout_hash": null,
     "stderr": "asr-arrays_05-ec8fbd5.stderr",
-    "stderr_hash": "b92b252106c95d1851599993abbedd755f2b3231f5b551b3af33b67e",
+    "stderr_hash": "4e5d42a186b8d82b484ec66ccc5a3b90da7e4be8a32bac26ea906198",
     "returncode": 2
 }

tests/reference/asr-arrays_05-ec8fbd5.stderr

@@ -2,4 +2,4 @@ semantic error: Type mismatch in annotation-assignment, the types must be compat
  --> tests/errors/arrays_05.py:6:5
   |
 6 |     x: i16[5, 4] = empty([5, 3], dtype=int16)
-  |     ^              ^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch ('i16[5][4]' and 'i16[5][3]')
+  |     ^              ^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch ('i16[5,4]' and 'i16[5,3]')

tests/reference/asr-arrays_06-fbb09a3.json

@@ -8,6 +8,6 @@
     "stdout": null,
     "stdout_hash": null,
     "stderr": "asr-arrays_06-fbb09a3.stderr",
-    "stderr_hash": "0cd2825fa152a45c868b7f54832a95d0f457be296143f28ce1909870",
+    "stderr_hash": "1fa3f5061a72f03c0678806c0460b9ec5caf01cbbd2f07a606f1057e",
     "returncode": 2
 }

tests/reference/asr-arrays_06-fbb09a3.stderr

@@ -2,4 +2,4 @@ semantic error: Type mismatch in annotation-assignment, the types must be compat
  --> tests/errors/arrays_06.py:6:5
   |
 6 |     x: i16[5, 4] = empty([5, 4], dtype=int32)
-  |     ^              ^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch ('i16[5][4]' and 'i32[5][4]')
+  |     ^              ^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch ('i16[5,4]' and 'i32[5,4]')

tests/reference/asr-arrays_07-de430fd.json

@@ -8,6 +8,6 @@
     "stdout": null,
     "stdout_hash": null,
     "stderr": "asr-arrays_07-de430fd.stderr",
-    "stderr_hash": "ea9cadd25ae52d3ff115925e4f8e6feb278ad009410d64c940cf64ff",
+    "stderr_hash": "7fadea44b4ad8f383e0cadbd27a53eb3ab75f0edef98d27639527723",
     "returncode": 2
 }

tests/reference/asr-arrays_07-de430fd.stderr

@@ -2,4 +2,4 @@ semantic error: Type mismatch in annotation-assignment, the types must be compat
  --> tests/errors/arrays_07.py:6:5
   |
 6 |     x: f32[5, 4] = empty([5, 4], dtype=complex64)
-  |     ^              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch ('f32[5][4]' and 'c32[5][4]')
+  |     ^              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch ('f32[5,4]' and 'c32[5,4]')

tests/reference/asr-arrays_08-ba317a3.json

@@ -8,6 +8,6 @@
     "stdout": null,
     "stdout_hash": null,
     "stderr": "asr-arrays_08-ba317a3.stderr",
-    "stderr_hash": "a6fc0e1c661fab5e3ee0a034abb85d765a1dce515483a2a6191b2aa7",
+    "stderr_hash": "bedb87b219b7c49a18cced170e4ffcac780d242f70c3ae8bbfb27a26",
     "returncode": 2
 }

tests/reference/asr-arrays_08-ba317a3.stderr

@@ -2,4 +2,4 @@ semantic error: Type mismatch in annotation-assignment, the types must be compat
  --> tests/errors/arrays_08.py:9:5
   |
 9 |     x: i64[p, q, r] = empty([q, p, r], dtype=int64)
-  |     ^                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch ('i64[100][120][200]' and 'i64[120][100][200]')
+  |     ^                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch ('i64[100,120,200]' and 'i64[120,100,200]')