Trait gameshell::Evaluate

pub trait Evaluate<T> {
    fn evaluate(&mut self, statement: &[Data<'a>]) -> T;

    fn interpret_single(&mut self, statement: &str) -> Result<T, ParseError> { ... }
    fn interpret_multiple(&mut self, code: &str) -> Result<T, ParseError> { ... }
}

Interpreter trait

Central trait to add the interpreter to your custom evaluator

Required methods

fn evaluate(&mut self, statement: &[Data<'a>]) -> T

Evaluate a single statement

Statements are line-separated pieces of code turned into fixed data segments. See interpret_single and interpret_multiple on how to parse statements.

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Provided methods

fn interpret_single(&mut self, statement: &str) -> Result<T, ParseError>

Set up the parser and call evaluate on the result

This method expects 1 single statement, that is, it doesn't take in a bunch of separate statements, but rather one single whole statement, even if it contains newlines, which are considered whitespace and skipped.

fn interpret_multiple(&mut self, code: &str) -> Result<T, ParseError>

Interpret several statements one-by-one

When calling this function, it will interpret each individual statement, Normally, this happens when a newline is found. If however that same line contains an unclosed opening parenthesis, we will need to include some lines coming after this one in order to complete the statement.

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Implementors

impl<'a, C> Evaluate<Result<String, String>> for Evaluator<'a, C>

fn evaluate(&mut self, commands: &[Data]) -> Feedback

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