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"""Suppliers that are used to guarantee uniqueness of names."""

import tvm_ffi

from tvm import Object

from . import _ffi_api


@tvm_ffi.register_object("ir.UniqueNameSupply")
class UniqueNameSupply(Object):
    """UniqueNameSupply that can be used to generate unique names.

    Parameters
    ----------
    prefix: The prefix to be added to the generated names.
    """

    def __init__(self, prefix=""):
        self.__init_handle_by_constructor__(_ffi_api.UniqueNameSupply, prefix)

    def fresh_name(self, name, add_prefix=True, add_underscore=True):
        """Generates a unique name from this UniqueNameSupply.

        Parameters
        ----------
        name: String
            The name from which the generated name is derived.

        add_prefix: bool
            If set to true, then the prefix of this UniqueNameSupply will be prepended to the name.

        add_underscore: bool
            If set to True, adds '_' between prefix and digit.
        """
        return _ffi_api.UniqueNameSupply_FreshName(self, name, add_prefix, add_underscore)

    def reserve_name(self, name, add_prefix=True):
        """Reserves an existing name with this UniqueNameSupply.

        Parameters
        ----------
        name: String
            The name to be reserved.

        add_prefix: bool
            If set to true, then the prefix of this UniqueNameSupply will be prepended to the name
            before reserving it.
        """
        return _ffi_api.UniqueNameSupply_ReserveName(self, name, add_prefix)

    def contains_name(self, name, add_prefix=True):
        """Checks if this UniqueNameSupply already generated a name.

        Parameters
        ----------
        name: String
            The name to check.

        add_prefix: bool
            If set to true, then the prefix of this UniqueNameSupply will be prepended to the name
            before checking for it.
        """
        return _ffi_api.UniqueNameSupply_ContainsName(self, name, add_prefix)