Call type_of() in require_type() for better exception messages (#151)

* call type_of in require_type to catch exceptions

* fix formatting for types.py and types_test.py

pyteal/ast/app.py

@@ -95,8 +95,8 @@ def optedIn(cls, account: Expr, app: Expr) -> "App":
                 must be evaluated to uint64 (or, since v4, an application id that appears in
                 Txn.ForeignApps or is the CurrentApplicationID, must be evaluated to bytes).
         """
-        require_type(account.type_of(), TealType.anytype)
-        require_type(app.type_of(), TealType.uint64)
+        require_type(account, TealType.anytype)
+        require_type(app, TealType.uint64)
         return cls(AppField.optedIn, [account, app])
 
     @classmethod
@@ -109,8 +109,8 @@ def localGet(cls, account: Expr, key: Expr) -> "App":
                 Txn.Accounts or is Txn.Sender, must be evaluated to bytes).
             key: The key to read from the account's local state. Must evaluate to bytes.
         """
-        require_type(account.type_of(), TealType.anytype)
-        require_type(key.type_of(), TealType.bytes)
+        require_type(account, TealType.anytype)
+        require_type(key, TealType.bytes)
         return cls(AppField.localGet, [account, key])
 
     @classmethod
@@ -126,9 +126,9 @@ def localGetEx(cls, account: Expr, app: Expr, key: Expr) -> MaybeValue:
                 Txn.ForeignApps or is the CurrentApplicationID, must be evaluated to bytes).
             key: The key to read from the account's local state. Must evaluate to bytes.
         """
-        require_type(account.type_of(), TealType.anytype)
-        require_type(app.type_of(), TealType.uint64)
-        require_type(key.type_of(), TealType.bytes)
+        require_type(account, TealType.anytype)
+        require_type(app, TealType.uint64)
+        require_type(key, TealType.bytes)
         return MaybeValue(
             AppField.localGetEx.get_op(), TealType.anytype, args=[account, app, key]
         )
@@ -140,7 +140,7 @@ def globalGet(cls, key: Expr) -> "App":
         Args:
             key: The key to read from the global application state. Must evaluate to bytes.
         """
-        require_type(key.type_of(), TealType.bytes)
+        require_type(key, TealType.bytes)
         return cls(AppField.globalGet, [key])
 
     @classmethod
@@ -153,8 +153,8 @@ def globalGetEx(cls, app: Expr, key: Expr) -> MaybeValue:
                 Txn.ForeignApps or is the CurrentApplicationID, must be evaluated to uint64).
             key: The key to read from the global application state. Must evaluate to bytes.
         """
-        require_type(app.type_of(), TealType.uint64)
-        require_type(key.type_of(), TealType.bytes)
+        require_type(app, TealType.uint64)
+        require_type(key, TealType.bytes)
         return MaybeValue(
             AppField.globalGetEx.get_op(), TealType.anytype, args=[app, key]
         )
@@ -170,9 +170,9 @@ def localPut(cls, account: Expr, key: Expr, value: Expr) -> "App":
             key: The key to write in the account's local state. Must evaluate to bytes.
             value: The value to write in the account's local state. Can evaluate to any type.
         """
-        require_type(account.type_of(), TealType.anytype)
-        require_type(key.type_of(), TealType.bytes)
-        require_type(value.type_of(), TealType.anytype)
+        require_type(account, TealType.anytype)
+        require_type(key, TealType.bytes)
+        require_type(value, TealType.anytype)
         return cls(AppField.localPut, [account, key, value])
 
     @classmethod
@@ -183,8 +183,8 @@ def globalPut(cls, key: Expr, value: Expr) -> "App":
             key: The key to write in the global application state. Must evaluate to bytes.
             value: THe value to write in the global application state. Can evaluate to any type.
         """
-        require_type(key.type_of(), TealType.bytes)
-        require_type(value.type_of(), TealType.anytype)
+        require_type(key, TealType.bytes)
+        require_type(value, TealType.anytype)
         return cls(AppField.globalPut, [key, value])
 
     @classmethod
@@ -197,8 +197,8 @@ def localDel(cls, account: Expr, key: Expr) -> "App":
                 Txn.Accounts or is Txn.Sender, must be evaluated to bytes).
             key: The key to delete from the account's local state. Must evaluate to bytes.
         """
-        require_type(account.type_of(), TealType.anytype)
-        require_type(key.type_of(), TealType.bytes)
+        require_type(account, TealType.anytype)
+        require_type(key, TealType.bytes)
         return cls(AppField.localDel, [account, key])
 
     @classmethod
@@ -208,7 +208,7 @@ def globalDel(cls, key: Expr) -> "App":
         Args:
             key: The key to delete from the global application state. Must evaluate to bytes.
         """
-        require_type(key.type_of(), TealType.bytes)
+        require_type(key, TealType.bytes)
         return cls(AppField.globalDel, [key])
 
 
@@ -224,7 +224,7 @@ def approvalProgram(cls, app: Expr) -> MaybeValue:
             app: An index into Txn.ForeignApps that correspond to the application to check.
                 Must evaluate to uint64.
         """
-        require_type(app.type_of(), TealType.uint64)
+        require_type(app, TealType.uint64)
         return MaybeValue(
             Op.app_params_get,
             TealType.bytes,
@@ -240,7 +240,7 @@ def clearStateProgram(cls, app: Expr) -> MaybeValue:
             app: An index into Txn.ForeignApps that correspond to the application to check.
                 Must evaluate to uint64.
         """
-        require_type(app.type_of(), TealType.uint64)
+        require_type(app, TealType.uint64)
         return MaybeValue(
             Op.app_params_get,
             TealType.bytes,
@@ -256,7 +256,7 @@ def globalNumUnit(cls, app: Expr) -> MaybeValue:
             app: An index into Txn.ForeignApps that correspond to the application to check.
                 Must evaluate to uint64.
         """
-        require_type(app.type_of(), TealType.uint64)
+        require_type(app, TealType.uint64)
         return MaybeValue(
             Op.app_params_get,
             TealType.uint64,
@@ -272,7 +272,7 @@ def globalNumByteSlice(cls, app: Expr) -> MaybeValue:
             app: An index into Txn.ForeignApps that correspond to the application to check.
                 Must evaluate to uint64.
         """
-        require_type(app.type_of(), TealType.uint64)
+        require_type(app, TealType.uint64)
         return MaybeValue(
             Op.app_params_get,
             TealType.uint64,
@@ -288,7 +288,7 @@ def localNumUnit(cls, app: Expr) -> MaybeValue:
             app: An index into Txn.ForeignApps that correspond to the application to check.
                 Must evaluate to uint64.
         """
-        require_type(app.type_of(), TealType.uint64)
+        require_type(app, TealType.uint64)
         return MaybeValue(
             Op.app_params_get,
             TealType.uint64,
@@ -304,7 +304,7 @@ def localNumByteSlice(cls, app: Expr) -> MaybeValue:
             app: An index into Txn.ForeignApps that correspond to the application to check.
                 Must evaluate to uint64.
         """
-        require_type(app.type_of(), TealType.uint64)
+        require_type(app, TealType.uint64)
         return MaybeValue(
             Op.app_params_get,
             TealType.uint64,
@@ -320,7 +320,7 @@ def extraProgramPages(cls, app: Expr) -> MaybeValue:
             app: An index into Txn.ForeignApps that correspond to the application to check.
                 Must evaluate to uint64.
         """
-        require_type(app.type_of(), TealType.uint64)
+        require_type(app, TealType.uint64)
         return MaybeValue(
             Op.app_params_get,
             TealType.uint64,
@@ -336,7 +336,7 @@ def creator(cls, app: Expr) -> MaybeValue:
             app: An index into Txn.ForeignApps that correspond to the application to check.
                 Must evaluate to uint64.
         """
-        require_type(app.type_of(), TealType.uint64)
+        require_type(app, TealType.uint64)
         return MaybeValue(
             Op.app_params_get, TealType.bytes, immediate_args=["AppCreator"], args=[app]
         )
@@ -349,7 +349,7 @@ def address(cls, app: Expr) -> MaybeValue:
             app: An index into Txn.ForeignApps that correspond to the application to check.
                 Must evaluate to uint64.
         """
-        require_type(app.type_of(), TealType.uint64)
+        require_type(app, TealType.uint64)
         return MaybeValue(
             Op.app_params_get, TealType.bytes, immediate_args=["AppAddress"], args=[app]
         )

pyteal/ast/arg.py

@@ -29,7 +29,7 @@ def __init__(self, index: Union[int, Expr]) -> None:
             if index < 0 or index > 255:
                 raise TealInputError("invalid arg index {}".format(index))
         else:
-            require_type(cast(Expr, index).type_of(), TealType.uint64)
+            require_type(cast(Expr, index), TealType.uint64)
 
         self.index = index
 

pyteal/ast/assert_.py

@@ -18,7 +18,7 @@ def __init__(self, cond: Expr) -> None:
             cond: The condition to check. Must evaluate to a uint64.
         """
         super().__init__()
-        require_type(cond.type_of(), TealType.uint64)
+        require_type(cond, TealType.uint64)
         self.cond = cond
 
     def __teal__(self, options: "CompileOptions"):

pyteal/ast/asset.py

@@ -19,8 +19,8 @@ def balance(cls, account: Expr, asset: Expr) -> MaybeValue:
             asset: The ID of the asset to get, must be evaluated to uint64 (or, since v4,
                 a Txn.ForeignAssets offset).
         """
-        require_type(account.type_of(), TealType.anytype)
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(account, TealType.anytype)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_holding_get,
             TealType.uint64,
@@ -41,8 +41,8 @@ def frozen(cls, account: Expr, asset: Expr) -> MaybeValue:
             asset: The ID of the asset to get, must be evaluated to uint64 (or, since v4,
                 a Txn.ForeignAssets offset).
         """
-        require_type(account.type_of(), TealType.anytype)
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(account, TealType.anytype)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_holding_get,
             TealType.uint64,
@@ -64,7 +64,7 @@ def total(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.uint64,
@@ -81,7 +81,7 @@ def decimals(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.uint64,
@@ -98,7 +98,7 @@ def defaultFrozen(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.uint64,
@@ -115,7 +115,7 @@ def unitName(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.bytes,
@@ -132,7 +132,7 @@ def name(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.bytes,
@@ -149,7 +149,7 @@ def url(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.bytes,
@@ -168,7 +168,7 @@ def metadataHash(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.bytes,
@@ -185,7 +185,7 @@ def manager(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.bytes,
@@ -202,7 +202,7 @@ def reserve(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.bytes,
@@ -219,7 +219,7 @@ def freeze(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.bytes,
@@ -236,7 +236,7 @@ def clawback(cls, asset: Expr) -> MaybeValue:
                 must be evaluated to uint64 (or since v4, an asset ID that appears in
                 Txn.ForeignAssets).
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.bytes,
@@ -252,7 +252,7 @@ def creator(cls, asset: Expr) -> MaybeValue:
             asset: An index into Txn.ForeignAssets that corresponds to the asset to check. Must
                 evaluate to uint64.
         """
-        require_type(asset.type_of(), TealType.uint64)
+        require_type(asset, TealType.uint64)
         return MaybeValue(
             Op.asset_params_get,
             TealType.bytes,

pyteal/ast/binaryexpr.py

@@ -26,8 +26,8 @@ def __init__(
         else:
             leftType = cast(TealType, inputType)
             rightType = leftType
-        require_type(argLeft.type_of(), leftType)
-        require_type(argRight.type_of(), rightType)
+        require_type(argLeft, leftType)
+        require_type(argRight, rightType)
 
         self.op = op
         self.outputType = outputType

pyteal/ast/cond.py

@@ -46,12 +46,12 @@ def __init__(self, *argv: List[Expr]):
             if len(arg) != 2:
                 raise TealInputError(msg.format(arg))
 
-            require_type(arg[0].type_of(), TealType.uint64)  # cond_n should be int
+            require_type(arg[0], TealType.uint64)  # cond_n should be int
 
             if value_type is None:  # the types of all branches should be the same
                 value_type = arg[1].type_of()
             else:
-                require_type(arg[1].type_of(), value_type)
+                require_type(arg[1], value_type)
 
         self.value_type = value_type
         self.args = argv

pyteal/ast/for_.py

@@ -27,9 +27,9 @@ def __init__(self, start: Expr, cond: Expr, step: Expr) -> None:
             step: Expression to update the variable's value.
         """
         super().__init__()
-        require_type(cond.type_of(), TealType.uint64)
-        require_type(start.type_of(), TealType.none)
-        require_type(step.type_of(), TealType.none)
+        require_type(cond, TealType.uint64)
+        require_type(start, TealType.none)
+        require_type(step, TealType.none)
 
         self.start = start
         self.cond = cond
@@ -94,7 +94,7 @@ def has_return(self):
     def Do(self, doBlock: Expr):
         if self.doBlock is not None:
             raise TealCompileError("For expression already has a doBlock", self)
-        require_type(doBlock.type_of(), TealType.none)
+        require_type(doBlock, TealType.none)
         self.doBlock = doBlock
         return self
 

pyteal/ast/gaid.py

@@ -34,7 +34,7 @@ def __init__(self, txnIndex: Union[int, Expr]) -> None:
                     )
                 )
         else:
-            require_type(cast(Expr, txnIndex).type_of(), TealType.uint64)
+            require_type(cast(Expr, txnIndex), TealType.uint64)
         self.txnIndex = txnIndex
 
     def __str__(self):

pyteal/ast/gload.py

@@ -37,7 +37,7 @@ def __init__(self, txnIndex: Union[int, Expr], slotId: int) -> None:
                     )
                 )
         else:
-            require_type(cast(Expr, txnIndex).type_of(), TealType.uint64)
+            require_type(cast(Expr, txnIndex), TealType.uint64)
         if slotId < 0 or slotId >= NUM_SLOTS:
             raise TealInputError(
                 "Invalid slot ID {}, shoud be in [0, {})".format(slotId, NUM_SLOTS)