proof_of_sql/base/database/
owned_column_error.rs

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use crate::base::database::ColumnType;
use alloc::string::String;
use snafu::Snafu;

/// Errors from operations related to `OwnedColumn`s.
#[derive(Snafu, Debug, PartialEq, Eq)]
pub enum OwnedColumnError {
    /// Can not perform type casting.
    #[snafu(display("Can not perform type casting from {from_type:?} to {to_type:?}"))]
    TypeCastError {
        /// The type from which we are trying to cast.
        from_type: ColumnType,
        /// The type to which we are trying to cast.
        to_type: ColumnType,
    },
    /// Error in converting scalars to a given column type.   
    #[snafu(display("Error in converting scalars to a given column type: {error}"))]
    ScalarConversionError {
        /// The underlying error
        error: String,
    },
    /// Unsupported operation.
    #[snafu(display("Unsupported operation: {error}"))]
    Unsupported {
        /// The underlying error
        error: String,
    },
}

/// Result type for operations related to `OwnedColumn`s.
pub type OwnedColumnResult<T> = core::result::Result<T, OwnedColumnError>;