Rhea ground work

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "beef"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a8241f3ebb85c056b509d4327ad0358fbbba6ffb340bf388f26350aeda225b1"
+
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
+[[package]]
+name = "logos"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c000ca4d908ff18ac99b93a062cb8958d331c3220719c52e77cb19cc6ac5d2c1"
+dependencies = [
+ "logos-derive",
+]
+
+[[package]]
+name = "logos-codegen"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc487311295e0002e452025d6b580b77bb17286de87b57138f3b5db711cded68"
+dependencies = [
+ "beef",
+ "fnv",
+ "proc-macro2",
+ "quote",
+ "regex-syntax",
+ "syn",
+]
+
+[[package]]
+name = "logos-derive"
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+dependencies = [
+ "logos-codegen",
+]
+
+[[package]]
+name = "proc-macro2"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.6.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
+
+[[package]]
+name = "rhea"
+version = "0.1.0"
+dependencies = [
+ "logos",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c324c494eba9d92503e6f1ef2e6df781e78f6a7705a0202d9801b198807d518a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "301abaae475aa91687eb82514b328ab47a211a533026cb25fc3e519b86adfc3c"

Cargo.toml

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+[package]
+name = "rhea"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+logos = "*"

assets/examples/func.rhea

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+func main(){}

assets/examples/library.rhea

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+var std = include "std";
+
+func main(){}

assets/libraries/math/constants.rhea

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+
+// measured in M/S
+const C = 299_792_458;
+
+const pi = 3.141592653589793;
+const tau = 6.283185307179586;

assets/libraries/math/math.rhea

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+var constants = include "constants";

assets/libraries/std/io.rhea

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+var log = include "log";

assets/libraries/std/log.rhea

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+func error(){}
+func warn(){}
+func info(){}
+func debug(){}
+func trace(){}

assets/libraries/std/std.rhea

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+var io = include "std.io";
+var math = include "math"

rust-toolchain.toml

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+[toolchain]
+channel = "nightly"
+components = ["rust-src", "llvm-tools"]

shell.nix

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+{ pkgs ? import <nixpkgs> { } }:
+pkgs.mkShell rec {
+  buildInputs = with pkgs; [
+    clang
+    llvmPackages.bintools
+    rustup
+  ];
+  extraCmds = '''';
+  RUSTC_VERSION = pkgs.lib.readFile ./rust-toolchain.toml;
+  # https://github.com/rust-lang/rust-bindgen#environment-variables
+  LIBCLANG_PATH =
+    pkgs.lib.makeLibraryPath [ pkgs.llvmPackages_latest.libclang.lib ];
+  shellHook = ''
+    export PATH=$PATH:''${CARGO_HOME:-~/.cargo}/bin
+    export PATH=$PATH:''${RUSTUP_HOME:-~/.rustup}/toolchains/$RUSTC_VERSION-x86_64-unknown-linux-gnu/bin/
+  '';
+  # Add precompiled library to rustc search path
+  RUSTFLAGS = (builtins.map (a: "-L ${a}/lib") [
+    # add libraries here (e.g. pkgs.libvmi)
+  ]);
+  # Add glibc, clang, glib and other headers to bindgen search path
+  BINDGEN_EXTRA_CLANG_ARGS =
+    # Includes with normal include path
+    (builtins.map (a: ''-I"${a}/include"'') [
+      # add dev libraries here (e.g. pkgs.libvmi.dev)
+      pkgs.glibc.dev
+    ])
+    # Includes with special directory paths
+    ++ [
+      ''
+        -I"${pkgs.llvmPackages_latest.libclang.lib}/lib/clang/${pkgs.llvmPackages_latest.libclang.version}/include"''
+      ''-I"${pkgs.glib.dev}/include/glib-2.0"''
+      "-I${pkgs.glib.out}/lib/glib-2.0/include/"
+    ];
+
+}

src/main.rs

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+// Rhea
+
+use logos::Logos;
+
+#[derive(Logos, Debug, PartialEq)]
+#[logos(skip r"[ \t\n\f]+")] // Ignore this regex pattern between tokens
+enum Token {
+    #[token(".")]
+    Period,
+
+    #[token("(")]
+    LeftParen,
+
+    #[token("{")]
+    LeftBrace,
+
+    #[token(")")]
+    RightParen,
+
+    #[token("}")]
+    RightBrace,
+
+    #[token("include")]
+    Include,
+
+    #[token("=")]
+    Equals,
+
+    #[token(";")]
+    Semicolon,
+
+    #[token("\"")]
+    Quote,
+
+    // Or regular expressions.
+    #[regex("[a-zA-Z]+")]
+    Text,
+}
+
+fn main() {
+    let mut lex = Token::lexer(include_str!("../assets/examples/library.rhea"));
+    for x in lex {
+        println!("{:?}", x);
+    }
+}