Add BoundedInt terminal to grammar definition for parsing ABI (#1449)

* Add BoundedInt to grammar

* Fix calculating log

This reverts commit e438de5.

Author: kkawula

starknet_py/abi/v2/parser_test.py

@@ -1,8 +1,10 @@
 import json
+from typing import cast
 
 import pytest
 
 from starknet_py.abi.v2 import Abi, AbiParser
+from starknet_py.cairo.data_types import UintType
 from starknet_py.tests.e2e.fixtures.misc import ContractVersion, load_contract
 
 
@@ -31,3 +33,40 @@ def test_abi_parse(contract_name):
     parsed_abi = parser.parse()
 
     assert isinstance(parsed_abi, Abi)
+
+
+def test_bounded_int_parse():
+    abi_list = [
+        {
+            "type": "struct",
+            "name": "core::circuit::u384",
+            "members": [
+                {
+                    "name": "limb0",
+                    "type": "core::internal::BoundedInt::<0, 79228162514264337593543950335>",
+                },
+                {
+                    "name": "limb1",
+                    "type": "core::internal::BoundedInt::<0, 79228162514264337593543950335>",
+                },
+                {
+                    "name": "limb2",
+                    "type": "core::internal::BoundedInt::<0, 79228162514264337593543950335>",
+                },
+                {
+                    "name": "limb3",
+                    "type": "core::internal::BoundedInt::<0, 79228162514264337593543950335>",
+                },
+            ],
+        }
+    ]
+
+    parser = AbiParser(abi_list)
+    parsed_abi = parser.parse()
+
+    assert isinstance(parsed_abi, Abi)
+
+    uint = cast(
+        UintType, parsed_abi.defined_structures["core::circuit::u384"].types["limb0"]
+    )
+    assert uint.bits == 96

starknet_py/abi/v2/parser_transformer.py

@@ -1,3 +1,4 @@
+from math import log2
 from typing import Any, List, Optional
 
 import lark
@@ -25,6 +26,7 @@
         | type_felt
         | type_bytes
         | type_uint
+        | type_bounded_int
         | type_contract_address
         | type_class_hash
         | type_storage_address
@@ -40,6 +42,7 @@
     type_bytes: "core::bytes_31::bytes31"
     type_bool: "core::bool"
     type_uint: "core::integer::u" INT
+    type_bounded_int: "core::internal::BoundedInt::<" INT "," WS? INT ">"
     type_contract_address: "core::starknet::contract_address::ContractAddress"
     type_class_hash: "core::starknet::class_hash::ClassHash"
     type_storage_address: "core::starknet::storage_access::StorageAddress"
@@ -109,6 +112,17 @@ def type_uint(self, value: List[Token]) -> UintType:
         """
         return UintType(int(value[0]))
 
+    def type_bounded_int(self, value: List[Token]) -> UintType:
+        """
+        BoundedInt Uint type contains information about its ranges. They are present in the value[0] and value[2].
+        """
+        if value[0] != "0":
+            raise ValueError("BoundedInt should start from 0.")
+
+        bits = log2(int(value[2]) + 1)
+
+        return UintType(int(bits))
+
     def type_unit(self, _value: List[Any]) -> UnitType:
         """
         `()` type.