rlox | A rust interpreter for the Lox language | Interpreter library
kandi X-RAY | rlox Summary
kandi X-RAY | rlox Summary
Following along with the book [Crafting Interpreters] in Rust. An overview of the language can be found [here] In general, I try to follow the book as close as possible conceptually. That said, this is also an exercise in idiomatic Rust and so things can differ greatly from the Java implementation. Namely sum types and pattern matching see heavy use, with a few macro invocations sprinked in as well.
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Community Discussions
Trending Discussions on rlox
QUESTION
I am sending the image through $_POST
with ajax
to my script. In the $_POST
array it shows like:
ANSWER
Answered 2019-Sep-19 at 10:20Try by passing dataType: 'json',
& cache: false,
into Ajax Call.
Also Add in your form tag enctype="multipart/form-data"
QUESTION
I'm trying to implement a simple interpreter in Rust for a made up programming language called rlox
, following Bob Nystrom's book Crafting Interpreters.
I want errors to be able to occur in any child module, and for them to be "reported" in the main
module (this is done in the book, with Java, by simply calling a static method on the containing class which prints the offending token and line). However, if an error occurs, it's not like I can just return early with Result::Err
(which is, I assume, the idiomatic way to handle errors in Rust) because the interpreter should keep running - continually looking for errors.
Is there an (idiomatic) way for me to emulate the Java behaviour of calling a parent class' static method from a child class in Rust with modules? Should I abandon something like that entirely?
I thought about a strategy where I inject a reference to some ErrorReporter
struct as a dependency into the Scanner
and Token
structs, but that seems unwieldy to me (I don't feel like an error reporter should be part of the struct's signature, am I wrong?):
ANSWER
Answered 2018-Apr-26 at 22:30Importantly, a Java static method has no access to any instance state. That means that it can be replicated in Rust by either a function or an associated function, neither of which have any state. The only difference is in how you call them:
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No vulnerabilities reported
Install rlox
Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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