arora-behavior-tree 0.1.0

The Arora behavior tree: Groot-compatible trees ticking Arora modules.
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use arora_types::call::CallError;
use arora_types::value::ConversionError;
use derive_more::Display;
use uuid::Uuid;

#[derive(Display, Debug)]
pub enum BehaviorTreeError {
    /// Error when parsing something, such as a behavior tree description.
    #[display("parsing error: {}", message)]
    ParsingError { message: String },

    /// Error in the structure of the behavior tree:
    /// cycles, duplicate nodes, dangling references....
    #[display("inconsistent behavior tree: {}", message)]
    InconsistentTreeError { message: String },

    /// Error when client performs a call to a module function.
    CallError(CallError),

    /// Client-side value conversion error.
    ConversionError(ConversionError),

    /// Variable referred in the behavior tree was not found.
    #[display("variable \"{}\" used by node \"{}\" was not found", variable, node)]
    VariableNotFound { variable: Uuid, node: Uuid },

    #[display("node \"{}\", child of node \"{}\" was not found", child, node)]
    ChildNodeNotFound { child: Uuid, node: Uuid },

    #[display(
    "children were specified for node \"{}\", but associated function \"{}\" does not accept them as a parameter",
    node,
    function
  )]
    MissingChildrenParameter { node: Uuid, function: Uuid },

    #[display("internal error: {}", message)]
    InternalError { message: String },
}

impl std::error::Error for BehaviorTreeError {}

impl<E: serde::de::Error> From<E> for BehaviorTreeError {
    fn from(e: E) -> Self {
        BehaviorTreeError::ParsingError {
            message: e.to_string(),
        }
    }
}

impl Into<CallError> for BehaviorTreeError {
    fn into(self) -> CallError {
        match self {
            BehaviorTreeError::CallError(e) => e,
            _ => CallError::Generic {
                message: self.to_string(),
            },
        }
    }
}