Skip to content

Identifier

woke.ast.ir.expression.identifier module #

Identifier class #

Bases: ExpressionAbc

TBD

Source code in woke/ast/ir/expression/identifier.py 
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
class Identifier(ExpressionAbc):
    """
    TBD
    """

    _ast_node: SolcIdentifier
    _parent: SolidityAbc  # TODO: make this more specific

    _name: str
    _overloaded_declarations: List[AstNodeId]
    _referenced_declaration_id: Optional[AstNodeId]

    def __init__(
        self, init: IrInitTuple, identifier: SolcIdentifier, parent: SolidityAbc
    ):
        from woke.ast.ir.meta.import_directive import ImportDirective

        super().__init__(init, identifier, parent)
        self._name = identifier.name
        self._overloaded_declarations = list(identifier.overloaded_declarations)
        self._referenced_declaration_id = identifier.referenced_declaration
        if self._referenced_declaration_id is None:
            assert isinstance(self._parent, ImportDirective)
        init.reference_resolver.register_post_process_callback(self._post_process)

    def _post_process(self, callback_params: CallbackParams):
        assert self._referenced_declaration_id is not None
        if self._referenced_declaration_id < 0:
            global_symbol = GlobalSymbolsEnum(self._referenced_declaration_id)
            self._reference_resolver.register_global_symbol_reference(
                global_symbol, self
            )
            self._reference_resolver.register_destroy_callback(
                self.file, partial(self._destroy, global_symbol)
            )
        else:
            referenced_declaration = self.referenced_declaration
            assert isinstance(referenced_declaration, DeclarationAbc)
            referenced_declaration.register_reference(self)
            self._reference_resolver.register_destroy_callback(
                self.file, partial(self._destroy, referenced_declaration)
            )

    def _destroy(
        self, referenced_declaration: Union[GlobalSymbolsEnum, DeclarationAbc]
    ) -> None:
        if isinstance(referenced_declaration, GlobalSymbolsEnum):
            self._reference_resolver.unregister_global_symbol_reference(
                referenced_declaration, self
            )
        elif isinstance(referenced_declaration, DeclarationAbc):
            referenced_declaration.unregister_reference(self)
        else:
            raise TypeError(f"Unexpected type: {type(referenced_declaration)}")

    @property
    def parent(self) -> SolidityAbc:
        return self._parent

    @property
    def name(self) -> str:
        return self._name

    @property
    def overloaded_declarations(self) -> Tuple[DeclarationAbc]:
        overloaded_declarations = []
        for overloaded_declaration_id in self._overloaded_declarations:
            if overloaded_declaration_id < 0:
                continue

            overloaded_declaration = self._reference_resolver.resolve_node(
                overloaded_declaration_id, self._cu_hash
            )
            assert isinstance(overloaded_declaration, DeclarationAbc)
            overloaded_declarations.append(overloaded_declaration)
        return tuple(overloaded_declarations)

    @property
    def referenced_declaration(self) -> Union[DeclarationAbc, GlobalSymbolsEnum]:
        assert self._referenced_declaration_id is not None
        if self._referenced_declaration_id < 0:
            return GlobalSymbolsEnum(self._referenced_declaration_id)

        node = self._reference_resolver.resolve_node(
            self._referenced_declaration_id, self._cu_hash
        )
        assert isinstance(node, DeclarationAbc)
        return node

    @property
    @lru_cache(maxsize=2048)
    def is_ref_to_state_variable(self) -> bool:
        referenced_declaration = self.referenced_declaration
        return (
            isinstance(referenced_declaration, VariableDeclaration)
            and referenced_declaration.is_state_variable
        )

    @property
    def modifies_state(self) -> Set[Tuple[IrAbc, ModifiesStateFlag]]:
        return set()