Add no_std support

Author: object-Object

.vscode/settings.json

@@ -2,5 +2,7 @@
     "files.associations": {
         "**/mimex-*.txt": "csv"
     },
+    // "rust-analyzer.cargo.noDefaultFeatures": true,
+    // "rust-analyzer.cargo.features": ["no_std"]
     "rust-analyzer.cargo.features": "all"
 }

Cargo.lock

@@ -17,29 +17,37 @@ harness = false
 required-features = ["mlogv32"]
 
 [dependencies]
-base64 = "0.22.1"
-binrw = "0.15.0"
-cesu8 = "1.1.0"
-csv = "1.3.1"
+binrw = { version = "0.15.0", default-features = false, features = ["verbose-backtrace"] }
 enum_dispatch = "0.3.13"
-flate2 = { version = "1.1.2", features = ["zlib-rs"], default-features = false }
-indexmap = "2.10.0"
-itertools = "0.14.0"
-lalrpop-util = { version = "0.22.2", features = ["lexer"] }
+hashbrown = "0.15.5"
+indexmap = { version = "2.10.0", default-features = false }
+itertools = { version = "0.14.0", default-features = false, features = ["use_alloc"] }
 lazy_static = "1.5.0"
-noise = "0.9.0"
-num-traits = "0.2.19"
-rand = "0.9.2"
-rapidhash = { version = "3.0.0", features = ["unsafe"] }
-regex = "1.11.1"
-replace_with = "0.1.8"
-serde = { version = "1.0.219", features = ["derive"] }
-serde_json = "1.0.141"
-strum = "0.27.2"
+num-traits = { version = "0.2.19", default-features = false }
+# https://github.com/hoxxep/rapidhash/issues/38
+rapidhash = { git = "https://github.com/hoxxep/rapidhash", rev = "582477028c", default-features = false }
+replace_with = { version = "0.1.8", default-features = false }
+serde = { version = "1.0.219", default-features = false, features = ["derive"] }
+strum = { version = "0.27.2", default-features = false }
 strum_macros = "0.27.2"
-thiserror = "2.0.12"
-velcro = "0.5.4"
-widestring = "1.2.0"
+thiserror = { version = "2.0.12", default-features = false }
+widestring = { version = "1.2.0", default-features = false, features = ["alloc"] }
+
+# no_std
+libm = { version = "0.2.11", optional = true }
+serde-json-core = { version = "0.6.0", optional = true }
+
+# std
+base64 = { version = "0.22.1", optional = true }
+cesu8 = { version = "1.1.0", optional = true }
+csv = { version = "1.3.1", optional = true }
+flate2 = { version = "1.1.2", default-features = false, features = ["zlib-rs"], optional = true }
+lalrpop-util = { version = "0.22.2", features = ["lexer"], optional = true }
+# https://github.com/Razaekel/noise-rs/issues/251
+noise = { version = "0.9.0", optional = true }
+rand = { version = "0.9.2", optional = true }
+regex = { version = "1.11.1", optional = true }
+serde_json = { version = "1.0.141", optional = true }
 
 # mlog
 clap = { version = "4.5.42", features = ["derive"], optional = true }
@@ -51,14 +59,44 @@ cursive = { version = "0.21.1", optional = true }
 indicatif = { version = "0.18.0", optional = true }
 
 [build-dependencies]
-lalrpop = "0.22.2"
+lalrpop = { version = "0.22.2", optional = true }
 
 [dev-dependencies]
 iai-callgrind = "0.16.1"
 pretty_assertions = "1.4.1"
+velcro = "0.5.4"
 
 [features]
+default = ["std"]
+no_std = [
+    "dep:libm",
+    "dep:serde-json-core",
+    "lazy_static/spin_no_std",
+]
+std = [
+    "dep:base64",
+    "dep:cesu8",
+    "dep:csv",
+    "dep:flate2",
+    "dep:lalrpop",
+    "dep:lalrpop-util",
+    "dep:noise",
+    "dep:rand",
+    "dep:regex",
+    "dep:serde_json",
+    "binrw/std",
+    "indexmap/std",
+    "itertools/use_std",
+    "num-traits/std",
+    "rapidhash/std",
+    "regex/std",
+    "replace_with/std",
+    "serde/std",
+    "strum/std",
+    "thiserror/std",
+]
 mlog = [
+    "std",
     "dep:clap",
     "dep:clap-stdin",
 ]

Cargo.toml

@@ -1,4 +1,7 @@
 fn main() {
-    println!("cargo:rerun-if-changed=src/logic/grammar.lalrpop");
-    lalrpop::process_root().unwrap();
+    #[cfg(feature = "std")]
+    {
+        println!("cargo:rerun-if-changed=src/logic/grammar.lalrpop");
+        lalrpop::process_root().unwrap();
+    }
 }

build.rs

@@ -24,7 +24,7 @@ use mindustry_rs::{
         Building, BuildingData, LValue, LogicVM, LogicVMBuilder, MEMORY_BANK, MESSAGE,
         MICRO_PROCESSOR, SWITCH, WORLD_PROCESSOR,
     },
-    types::{Object, PackedPoint2, ProcessorConfig, Schematic},
+    types::{Object, PackedPoint2, ProcessorConfig, schematics::Schematic},
 };
 use serde::Deserialize;
 use widestring::{U16String, u16str};

src/bin/mlogv32.rs

@@ -1,3 +1,10 @@
+#![no_std]
+
+extern crate alloc;
+
+#[cfg(feature = "std")]
+extern crate std;
+
 pub mod logic;
 pub mod types;
 mod utils;