Access internal data of TokenVec

[dalance]

I want to handle expected_tokens of SyntaxError like below, but I can't access internal Vec of TokenVec.
Could you add any API to access the internal Vec?

match error.expected_tokens[0] {
    "TokenA" => "some kind of special message",
    ....
}

[jsinger67]

Sure, I will have a look at it soon.

[jsinger67]

Hi @dalance ,
I extended the implementation on TokenVec. It now provides a get method and an iter method.

/// A vector of tokens in a string representation
#[derive(Debug, Default)]
pub struct TokenVec(Vec<String>);

impl TokenVec {
    /// Pushes a token to the vector
    pub fn push(&mut self, token: String) {
        self.0.push(token);
    }

    /// Returns an iterator over the tokens
    pub fn iter(&self) -> std::slice::Iter<String> {
        self.0.iter()
    }

    /// Returns a token at the given index
    pub fn get(&self, index: usize) -> Option<&String> {
        self.0.get(index)
    }
}

The changes are on branch jsinger67/issue310 for now.
If you think that these changes are sufficient, I could prepare a new release of parol_runtime.

Br,
Jörg

[dalance]

Thanks! Looks good.