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wake.ir.yul.identifier module #

YulIdentifier class #

Bases: YulAbc

Represents an identifier referencing a YulFunctionDefinition, a YulVariableDeclaration, or a Solidity VariableDeclaration through an ExternalReference.

Source code in wake/ir/yul/identifier.py 
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class YulIdentifier(YulAbc):
    """
    Represents an identifier referencing a [YulFunctionDefinition][wake.ir.yul.function_definition.YulFunctionDefinition], a [YulVariableDeclaration][wake.ir.yul.variable_declaration.YulVariableDeclaration], or a Solidity [VariableDeclaration][wake.ir.declarations.variable_declaration.VariableDeclaration] through an [ExternalReference][wake.ir.statements.inline_assembly.ExternalReference].
    """

    _parent: Union[
        YulAssignment,
        YulExpressionStatement,
        YulForLoop,
        YulIf,
        YulSwitch,
        YulVariableDeclaration,
        YulFunctionCall,
    ]
    _name: str
    _external_reference: Optional[ExternalReference]

    def __init__(
        self, init: IrInitTuple, identifier: SolcYulIdentifier, parent: YulAbc
    ):
        super().__init__(init, identifier, parent)
        self._name = identifier.name
        self._external_reference = None

    @property
    def parent(
        self,
    ) -> Union[
        YulAssignment,
        YulExpressionStatement,
        YulForLoop,
        YulIf,
        YulSwitch,
        YulVariableDeclaration,
        YulFunctionCall,
    ]:
        """
        Returns:
            Parent IR node.
        """
        return self._parent

    @property
    def name(self) -> str:
        """
        Returns:
            Name of the identifier.
        """
        return self._name

    @property
    def external_reference(self) -> Optional[ExternalReference]:
        """
        Is not `None` if the identifier is an external reference to a Solidity variable.

        !!! example
            `:::solidity foo` in the following example:

            ```solidity
            uint foo;
            assembly {
                foo := 1
            }
            ```

        Returns:
            Object describing the external reference to a Solidity variable.
        """
        return self._external_reference

    @property
    def modifies_state(
        self,
    ) -> Set[Tuple[Union[ExpressionAbc, StatementAbc, YulAbc], ModifiesStateFlag]]:
        return set()

external_reference: Optional[ExternalReference] property #

Is not None if the identifier is an external reference to a Solidity variable.

Example

foo in the following example:

uint foo;
assembly {
    foo := 1
}

Returns:

Type Description
Optional[ExternalReference]

Object describing the external reference to a Solidity variable.

name: str property #

Returns:

Type Description
str

Name of the identifier.

parent: Union[YulAssignment, YulExpressionStatement, YulForLoop, YulIf, YulSwitch, YulVariableDeclaration, YulFunctionCall] property #

Returns:

Type Description
Union[YulAssignment, YulExpressionStatement, YulForLoop, YulIf, YulSwitch, YulVariableDeclaration, YulFunctionCall]

Parent IR node.