nyavascript 0.1.0

Lisp implementation. Called NyavaScript because I'm a monster
Documentation 
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use std::fmt;
use std::error::Error;

#[derive(Debug, Clone, PartialEq)]
pub enum SyntaxError {
    NoRootListError,
    NoSymbolsError,
    QuoteMissingItemError,
    UnclosedRootListError,
    UnexpectedTrailingTokensError,
    UnmatchedCloseListError,
    UnmatchedOpenListError,
    BadInfixDotNotation,
}

impl fmt::Display for SyntaxError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "SyntaxError: ")?;

        match self {
            SyntaxError::NoRootListError => write!(f, "No Root List. First item in input should be a parenthesis"),
            SyntaxError::NoSymbolsError => write!(f, "No Symbols. Input cannot be empty"),
            SyntaxError::UnclosedRootListError => write!(f, "Root list is unclosed. Add a closing parenthesis to it"),
            SyntaxError::UnmatchedOpenListError => write!(f, "Unmatched Open List: Open parenthesis is missing close parenthesis"),
            SyntaxError::UnmatchedCloseListError => write!(f, "Unmatched Close List: Close parenthesis is missing open parenthesis"),
            SyntaxError::QuoteMissingItemError => write!(f, "Quote is missing an item after it"),
            SyntaxError::UnexpectedTrailingTokensError => write!(f, "Unexpected Trailing tokens"),
            SyntaxError::BadInfixDotNotation => write!(f, "Bad infix dot notation. Dot must be last or second to last item if it is in list"),
        }
    }
}

impl Error for SyntaxError { }