Source code for python2verilog.exceptions

"""
Exceptions
"""
import ast

from python2verilog.ir.expressions import Var




[docs]
class UnknownValueError(Exception):
    """
    An unexpected 'x' or 'z' was encountered in simulation
    """






[docs]
class UnsupportedSyntaxError(Exception):
    """
    Python syntax was not within the supported subset
    """

    def __init__(self, msg: object) -> None:
        super().__init__(
            msg,
        )



[docs]
    @classmethod
    def from_pyast(cls, node: ast.AST, name: str):
        """
        Based on AST error
        """
        inst = cls(
            f"Unsupported Python syntax `{ast.unparse(node)}` found in function "
            f"`{name}` as {ast.dump(node)}"
        )
        return inst








[docs]
class StaticTypingError(Exception):
    """
    Variable changed type dynamically.
    Currently requires strongly typed variables.
    """

    def __init__(self, *args: object) -> None:
        super().__init__(
            *args,
        )






[docs]
class TypeInferenceError(Exception):
    """
    Type inferrence failed, either use the function in code or provide type hints
    """

    def __init__(self, name: str) -> None:
        """
        :param name: function name
        """
        msg = (
            f"Input/output type inferrence failed for function `{name}`, "
            "either use the function in Python code or provide type hints",
        )

        super().__init__(msg)