add 64bit support to wasm (#964)

* add 64bit support to wasm

* fix format

pytket/pytket/circuit/__init__.py

@@ -95,12 +95,16 @@ def overload_add_wasm(  # type: ignore
         args_wasm = [0]
 
     for x in list_i:
-        if x > 32:
-            raise ValueError("only functions with i32 type are allowed")
+        if x > filehandler._int_size:
+            raise ValueError(
+                f"only functions with i{filehandler._int_size} type are allowed"
+            )
 
     for x in list_o:
-        if x > 32:
-            raise ValueError("only functions with i32 type are allowed")
+        if x > filehandler._int_size:
+            raise ValueError(
+                f"only functions with i{filehandler._int_size} type are allowed"
+            )
 
     if filehandler.check_function(funcname, len(list_i), len(list_o)):
         if (len(args_wasm)) > 0:

pytket/pytket/wasm/wasm.py

@@ -42,7 +42,7 @@ class WasmFileHandler:
         LANG_TYPE_EMPTY: None,
     }
 
-    def __init__(self, filepath: str, check_file: bool = True):
+    def __init__(self, filepath: str, check_file: bool = True, int_size: int = 32):
         """
         Construct a wasm file handler
 
@@ -51,7 +51,18 @@ def __init__(self, filepath: str, check_file: bool = True):
         :param check_file: If ``True`` checks file for compatibility with wasm
           standards. If ``False`` checks are skipped.
         :type check_file: bool
+        :param int_size: length of the integer that is used in the wasm file
+        :type int_size: int
         """
+        self._int_size = int_size
+        if int_size == 32:
+            self._int_type = self.type_lookup[LANG_TYPE_I32]
+        elif int_size == 64:
+            self._int_type = self.type_lookup[LANG_TYPE_I64]
+        else:
+            raise ValueError(
+                "given integer length not valid, only 32 and 64 are allowed"
+            )
 
         self._filepath = filepath
 
@@ -103,8 +114,9 @@ def __init__(self, filepath: str, check_file: bool = True):
                             ] * entry.return_count
                         else:
                             raise ValueError(
-                                f"Only parameter and return values of i32 types are"
-                                + f"allowed, found type: {entry.return_type}"
+                                f"Only parameter and return values of "
+                                + f"i{self._int_size} types are"
+                                + f" allowed, found type: {entry.return_type}"
                             )
                     elif entry.return_count == 1:
                         function_signatures[idx]["return_types"] = [
@@ -124,13 +136,13 @@ def __init__(self, filepath: str, check_file: bool = True):
                 self._function_types = cur_sec_data.payload.types
 
         for i, x in enumerate(function_names):
-            # check for only i32 type in parameters and return values
+            # check for only integer type in parameters and return values
             supported_function = True
             for t in function_signatures[self._function_types[i]]["parameter_types"]:
-                if t != "i32":
+                if t != self._int_type:
                     supported_function = False
             for t in function_signatures[self._function_types[i]]["return_types"]:
-                if t != "i32":
+                if t != self._int_type:
                     supported_function = False
 
             if supported_function:
@@ -161,8 +173,11 @@ def __repr__(self) -> str:
         """str representation of the contents of the wasm file"""
         result = f"Functions in wasm file with the uid {self._wasmfileuid}:\n"
         for x in self._functions:
-            result += f"function '{x}' with {self._functions[x][0]} i32 parameter(s)"
-            result += f" and {self._functions[x][1]} i32 return value(s)\n"
+            result += f"function '{x}' with "
+            result += f"{self._functions[x][0]} i{self._int_size} parameter(s)"
+            result += (
+                f" and {self._functions[x][1]} i{self._int_size} return value(s)\n"
+            )
 
         for x in self._unsupported_function:
             result += (
@@ -179,9 +194,9 @@ def check_function(
 
         :param function_name: name of the function that is checked
         :type function_name: str
-        :param number_of_parameters: number of i32 parameters of the function
+        :param number_of_parameters: number of integer parameters of the function
         :type number_of_parameters: int
-        :param number_of_returns: number of i32 return values of the function
+        :param number_of_returns: number of integer return values of the function
         :type number_of_returns: int
         :return: true if the signature and the name of the function is correct"""
 

pytket/tests/classical_test.py

@@ -415,7 +415,7 @@ def test_wasmfilehandler_without_init() -> None:
 
 
 def test_wasmfilehandler_repr() -> None:
-    w = wasm.WasmFileHandler("testfile.wasm")
+    w = wasm.WasmFileHandler("testfile.wasm", int_size=32)
     assert (
         repr(w)
         == """Functions in wasm file with the uid 6a0a29e235cd5c60353254bc2b459e631d381cdd0bded7ae6cb44afb784bd2de:
@@ -432,6 +432,24 @@ def test_wasmfilehandler_repr() -> None:
     )
 
 
+def test_wasmfilehandler_repr_64() -> None:
+    w = wasm.WasmFileHandler("testfile.wasm", int_size=64)
+    assert (
+        repr(w)
+        == """Functions in wasm file with the uid 6a0a29e235cd5c60353254bc2b459e631d381cdd0bded7ae6cb44afb784bd2de:
+function 'init' with 0 i64 parameter(s) and 0 i64 return value(s)
+function 'add_something' with 1 i64 parameter(s) and 1 i64 return value(s)
+unsupported function with unvalid parameter or result type: 'add_one' 
+unsupported function with unvalid parameter or result type: 'multi' 
+unsupported function with unvalid parameter or result type: 'add_two' 
+unsupported function with unvalid parameter or result type: 'add_eleven' 
+unsupported function with unvalid parameter or result type: 'no_return' 
+unsupported function with unvalid parameter or result type: 'no_parameters' 
+unsupported function with unvalid parameter or result type: 'new_function' 
+"""
+    )
+
+
 def gen_reg(
     name: str, size: int, reg_type: Union[Type[BitRegister], Type[QubitRegister]]
 ) -> Union[BitRegister, QubitRegister]: