esdl 0.6.0

Event-sourcing Schema Definition Language parser
Documentation 
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use thiserror::Error;

#[derive(Debug, Error)]
pub enum Error {
    #[error("duplicate command {0}")]
    DuplicateCommand(String),
    #[error("duplicate custom type {0}")]
    DuplicateCustomType(String),
    #[error("duplicate field {field} in custom type {ty}")]
    DuplicateCustomTypeField { ty: String, field: String },
    #[error("duplicate event {0}")]
    DuplicateEvent(String),
    #[error("duplicate field {field} in event {event}")]
    DuplicateEventField { event: String, field: String },
    #[error("duplicate param {param} in {command}")]
    DuplicateParam { command: String, param: String },
    #[error("duplicate field {field} in type {ty}")]
    DuplicateTypeField { ty: String, field: String },
    #[error("event not defined {0}")]
    EventNotDefined(String),
    #[error(transparent)]
    Io(#[from] std::io::Error),
    #[error("missing aggregate")]
    MissingAggregate,
    #[error("missing version")]
    MissingVersion,
    #[error("multiple aggregates")]
    MultipleAggregates,
    #[error("multiple versions")]
    MultipleVersions,
    #[error("parse error: {0}")]
    Parse(String),
    #[error("type not defined {0}")]
    TypeNotDefined(String),
}

impl From<nom_supreme::error::ErrorTree<&str>> for Error {
    fn from(err: nom_supreme::error::ErrorTree<&str>) -> Self {
        Error::Parse(err.to_string())
    }
}