Create your own programming language with Rust

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Issues 9

Closed

No suitable version of LLVM was found system-wide or pointed to by LLVM_SYS_100_PREFIX.

After installling llvm with the following oneliner bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" I still have the following error

No suitable version of LLVM was found system-wide or pointed
       to by LLVM_SYS_100_PREFIX.

       Consider using `llvmenv` to compile an appropriate copy of LLVM, and
       refer to the llvm-sys documentation for more information.

       llvm-sys: https://crates.io/crates/llvm-sys
       llvmenv: https://crates.io/crates/llvmenv
   --> /home/noone/.cargo/registry/src/github.com-1ecc6299db9ec823/llvm-sys-100.2.1/src/lib.rs:483:1
    |
483 | / std::compile_error!(concat!(
484 | |       "No suitable version of LLVM was found system-wide or pointed
485 | |        to by LLVM_SYS_", env!("CARGO_PKG_VERSION_MAJOR"), "_PREFIX.
486 | |
...   |
490 | |        llvm-sys: https://crates.io/crates/llvm-sys
491 | |        llvmenv: https://crates.io/crates/llvmenv"));
    | |____________________________________________________^

error: No suitable version of LLVM was found system-wide or pointed
       to by LLVM_SYS_110_PREFIX.

       Consider using `llvmenv` to compile an appropriate copy of LLVM, and
       refer to the llvm-sys documentation for more information.

       llvm-sys: https://crates.io/crates/llvm-sys
       llvmenv: https://crates.io/crates/llvmenv
   --> /home/noone/.cargo/registry/src/github.com-1ecc6299db9ec823/llvm-sys-110.0.1/src/lib.rs:486:1
    |
486 | / std::compile_error!(concat!(
487 | |     "No suitable version of LLVM was found system-wide or pointed
488 | |        to by LLVM_SYS_",
489 | |     env!("CARGO_PKG_VERSION_MAJOR"),
...   |
496 | |        llvmenv: https://crates.io/crates/llvmenv"
497 | | ));
    | |___^

error: aborting due to previous error

error: could not compile `llvm-sys`

question discussion and feedbacks

opened Mar 29, 2021 by justintim-es 7

Closed

No method error when building and running tests

It seems there is a no method error in /calculator/src/compiler/jit.rs on line 39-42 stating that there is no method for print_to_string() for the variable, function. function is the result of module.add_function(). Perhaps this is a matter of using a different version of LLVM?

To Reproduce Using LLVM version 10.0.0, I simply cloned and ran cargo test --tests

Expected behavior I expect that all tests pass and I am able to compile and run the program.

bug

opened Jan 18, 2021 by ajdelcimmuto 7

Closed

Can i get a pdf of that or any other way.

Awesome book bythe way i looked upon the website it's an awesome simple explanation , most books and tutorial didn;t do that even if they did they cover up like 700-1000 pages which is so frustrating , i just wanna build a compiler to understand thats it and you nailed it.

question discussion and feedbacks

opened Feb 27, 2021 by shahid777-py 5

Closed

Fix expressions with multiple operators.

Expressions such as 1 +2; or 300*200 work, but expressions which have multiple operations do not work. For example: 1+2+3+4 does not work, and has to be put in a chain of parentheses to get it to work. The other valid expressions are getting evaluated to the value of the first operator, for instance, 1*2*3 becomes 2, by evaluating 1*2 and so on. This can be solved by adding a loop, converting the first two expressions into lhs and continuing until there are no more pairs.

opened Dec 9, 2021 by re-masashi 3

Closed

Replaced 404 with draft chapters

mdbook v0.4.0 comes with draft chapters which clearly show that a chapter is WIP

opened Jun 25, 2020 by shilangyu 3

Closed

LLVM is not an acronym for Low-Level-Virtual-Machine

It originally started out as so but the acronym was eventually abolished. LLVM stands for nothing. I am bringing this up because of the line in Chapter 3.3 that states this misinformation.

question discussion and feedbacks

opened Jul 24, 2022 by maow-tty 2

Open

First number in expression cannot be negative [BUG]

Description

When running the calculator, the first number in a full line cannot be a negative number. In either the interpreter, JIT, or VM, it errors with the following message: called `Result::unwrap()\` on an `Err` value: Error { variant: ParsingError { positives: [EOI], negatives: [] }, location: Pos(3), line_col: Pos((1, 4)), path: None, line: "-1 + 2", continued_line: None }.

To Reproduce

Run the calculator compiler by cargo run --bin repl --features vm | jit | interpreter.
Give the input -NUMBER + NUMBER such as -2 + 5.
Output gives an error.

Expected behavior

Instead of giving an error the interpreter should return the calculated result. For example, -2 + 5 should output 3.

bug

opened May 9, 2022 by PrestonHager 0

Open

[BUG] Parser isn't treating linefeed as whitespace

Very useful project, looking forward to the continuation.

Describe the bug I managed to hit this when running under emacs' shell mode. Interestingly it doesn't happen in a terminal.

To Reproduce Steps to reproduce the behavior

On a Linux box,

run emacs,
M-x shell (that's Meta-x or alternative ESC and x, followed by shell return)
cargo run --bin repl --features interpreter (the feature isn't relevant)

$ cargo run --bin repl --features interpreter
   Compiling calculator v0.0.0 (/home/tommy/projects/Rust/create-your-own-lang-with-rust/calculator)
    Finished dev [unoptimized + debuginfo] target(s) in 2.92s
     Running `target/debug/repl`
Calculator prompt. Expressions are line evaluated.
>> 1+2
Compiling the source: 1+2

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error { variant: ParsingError { positives: [EOI\
, Operator], negatives: [] }, location: Pos(3), line_col: Pos((1, 4)), path: None, line: "1+2␊", continued_line: None }\
', /home/tommy/projects/Rust/create-your-own-lang-with-rust/calculator/src/lib.rs:20:52
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Expected behavior The behavior described in the documentation (or as it works outside of shell-mode)

bug

opened Jan 7, 2022 by tommythorn 0

Open

Show PEG with operators from Wiki article

Hi there! First, thanks for sharing. This looks well written and more or less easy to follow.

One thought I had though is that for readers who might need an overview of what computer languages do, I imagine that the PEG description of the grammar looks pretty magical.

I appreciate that defining PEG or how pest works isn’t your primary focus, but might it be more helpful to present the grammar using the operators from the Wikipedia article you posted and just assert that it translates to the form needed as pest input?

That way readers who follow up with the Wikipedia article can follow along more easily without having to read the pest manual which is likely to get into all sorts of other info.

Just an idea. Thanks again.

question discussion and feedbacks

opened Jun 17, 2021 by gitonthescene 1