Feature std to disable no_std

Cargo.toml

@@ -20,6 +20,7 @@ libm = { version = "0.2.7", optional = true }
 wasi = { version = "0.11.0", default-features = false }
 
 [features]
+std = ["alloc"]
 alloc = []
 derive = ["asr-derive"]
 flags = ["bitflags"]

src/file_format/mod.rs

@@ -2,5 +2,5 @@
 
 pub mod elf;
 pub mod pe;
-#[cfg(feature = "alloc")]
+#[cfg(feature = "std")]
 pub mod macho;

src/game_engine/unity/mono.rs

@@ -9,11 +9,11 @@ use core::iter;
 
 #[cfg(feature = "alloc")]
 use alloc::collections::BTreeSet;
-#[cfg(feature = "alloc")]
+#[cfg(feature = "std")]
 use crate::file_format::macho;
-#[cfg(feature = "alloc")]
+#[cfg(feature = "std")]
 use alloc::vec::Vec;
-#[cfg(feature = "alloc")]
+#[cfg(feature = "std")]
 use std::{path::Path, fs::File, io, io::Read};
 
 #[cfg(feature = "derive")]
@@ -47,7 +47,7 @@ impl Module {
             .find_map(|&name| process.get_module_range(name).ok()) {
             return Self::attach_dll(process, version, module);
         }
-        #[cfg(feature = "alloc")]
+        #[cfg(feature = "std")]
         if let Ok(module) = process.get_module_range("libmonobdwgc-2.0.dylib") {
             return Self::attach_dylib(process, version, module);
         }
@@ -137,7 +137,7 @@ impl Module {
         })
     }
 
-    #[cfg(feature = "alloc")]
+    #[cfg(feature = "std")]
     fn attach_dylib(process: &Process, version: Version, module_range: (Address, u64)) -> Option<Self> {
         let is_64_bit = macho::is_64_bit(process)?;
         let offsets = Offsets::new(version, is_64_bit, BinaryFormat::MachO);
@@ -707,7 +707,7 @@ impl Offsets {
                     monoclassfieldalignment: 0x10,
                 },
             },
-            #[cfg(feature = "alloc")]
+            #[cfg(feature = "std")]
             (true, BinaryFormat::MachO) => match version {
                 Version::V1 => panic!("MachO V1 not supported"),
                 // 64-bit MachO V2 matches Unity2019_4_2020_3_x64_MachO_Offsets from
@@ -736,7 +736,7 @@ impl Offsets {
                 },
                 Version::V3 => panic!("MachO V3 not supported"),
             },
-            #[cfg(feature = "alloc")]
+            #[cfg(feature = "std")]
             (false, BinaryFormat::MachO) => panic!("32-bit MachO format not supported"),
         }
     }
@@ -784,7 +784,7 @@ fn detect_version(process: &Process) -> Option<Version> {
     if let Ok(unity_module) = process.get_module_range("UnityPlayer.dll") {
         return detect_version_dll(process, unity_module);
     }
-    #[cfg(feature = "alloc")]
+    #[cfg(feature = "std")]
     if process.get_module_range("UnityPlayer.dylib").is_ok() {
         return detect_version_dylib(process);
     }
@@ -826,7 +826,7 @@ fn detect_version_dll(process: &Process, unity_module: (Address, u64)) -> Option
     })
 }
 
-#[cfg(feature = "alloc")]
+#[cfg(feature = "std")]
 fn detect_version_dylib(process: &Process) -> Option<Version> {
     const UNITY_PLAYER_VERSION: &[u8] = b"Unity Player version ";
     const UNITY_PLAYER_VERSION_LEN: usize = UNITY_PLAYER_VERSION.len();
@@ -869,13 +869,13 @@ fn detect_version_dylib(process: &Process) -> Option<Version> {
 #[derive(Copy, Clone, PartialEq, Hash, Debug)]
 enum BinaryFormat {
     PE,
-    #[cfg(feature = "alloc")]
+    #[cfg(feature = "std")]
     MachO,
 }
 
 // --------------------------------------------------------
 
-#[cfg(feature = "alloc")]
+#[cfg(feature = "std")]
 fn file_read_all_bytes<P: AsRef<Path>>(path: P) -> io::Result<Vec<u8>> {
     let mut f = File::open(path)?;
     let mut buffer: Vec<u8> = Vec::new();

src/game_engine/unity/scene.rs

@@ -11,7 +11,7 @@ use crate::{
     Address64, Error, Process,
 };
 
-#[cfg(feature = "alloc")]
+#[cfg(feature = "std")]
 use crate::file_format::macho;
 
 /// The scene manager allows you to easily identify the current scene loaded in
@@ -32,7 +32,7 @@ impl SceneManager {
         if let Ok(unity_player) = process.get_module_range("UnityPlayer.dll") {
             return Self::attach_dll(process, unity_player);
         }
-        #[cfg(feature = "alloc")]
+        #[cfg(feature = "std")]
         if let Ok(unity_player) = process.get_module_range("UnityPlayer.dylib") {
             return Self::attach_dylib(process, unity_player);
         }
@@ -71,7 +71,7 @@ impl SceneManager {
         })
     }
 
-    #[cfg(feature = "alloc")]
+    #[cfg(feature = "std")]
     fn attach_dylib(process: &Process, unity_player: (Address, u64)) -> Option<Self> {
         const SIG_64_BIT_DYLIB: Signature<13> = Signature::new("41 54 53 50 4C 8B ?5 ???????? 41 83");
 

src/lib.rs

@@ -1,3 +1,4 @@
+#![cfg_attr(not(feature = "std"), no_std)]
 #![warn(
     clippy::complexity,
     clippy::correctness,