Make crate no_std

Cargo.toml

@@ -18,14 +18,18 @@ halfbrown = { version = "0.4", optional = true }
 indexmap = { version = "2.0", optional = true }
 float-cmp = "0.10"
 ordered-float = { version = "5", optional = true }
-hashbrown = { version = "0.16", optional = true }
+hashbrown = { version = "0.16" }
 abi_stable = { version = "0.11.0", optional = true, default-features = false }
+embedded-io = "0.7.1"
+core_detect = "1.0.0"
 
 [features]
-default = ["custom-types", "halfbrown", "runtime-detection"]
+default = ["custom-types", "runtime-detection"]
 # Support for 128 bit integers
 128bit = []
 
+std = []
+
 # Support for custom types
 custom-types = []
 

src/array.rs

@@ -1,4 +1,6 @@
-use std::slice::SliceIndex;
+use alloc::boxed::Box;
+use alloc::vec::Vec;
+use core::slice::SliceIndex;
 
 /// Trait for indexing into an array
 pub trait Indexed<T> {

src/base.rs

@@ -1,6 +1,8 @@
-use std::io::{self, Write};
+use crate::io::{Write};
 
-use crate::{TryTypeError, ValueType, array::Array, object::Object};
+use alloc::string::String;
+
+use crate::{array::Array, object::Object, IoResult, TryTypeError, ValueType};
 
 /// Type information on a value
 pub trait TypedValue {
@@ -244,7 +246,7 @@ pub trait Writable {
     /// # Errors
     ///
     /// Will return `Err` if an IO error is encountered
-    fn write<'writer, W>(&self, w: &mut W) -> io::Result<()>
+    fn write<'writer, W>(&self, w: &mut W) -> IoResult<()>
     where
         W: 'writer + Write;
 
@@ -253,7 +255,7 @@ pub trait Writable {
     /// # Errors
     ///
     /// Will return `Err` if an IO error is encountered.
-    fn write_pp<'writer, W>(&self, w: &mut W) -> io::Result<()>
+    fn write_pp<'writer, W>(&self, w: &mut W) -> IoResult<()>
     where
         W: 'writer + Write;
 }

src/derived.rs

@@ -1,5 +1,5 @@
-use std::{borrow::Borrow, hash::Hash};
-
+use core::borrow::Borrow;
+use core::hash::Hash;
 use crate::{AccessError, TryTypeError, array::Array, object::Object};
 
 /// `try_as_*` access to scalar value types
@@ -99,7 +99,7 @@ pub trait TypedScalarValue {
     #[must_use]
     fn is_float(&self) -> bool;
 
-    /// returns true if the current value a integer number
+    /// returns true if the current value an integer number
     #[must_use]
     fn is_integer(&self) -> bool;
 
@@ -559,7 +559,7 @@ pub trait MutableObject {
         &mut self,
         k: K,
         v: V,
-    ) -> std::result::Result<Option<Self::Target>, AccessError>
+    ) -> Result<Option<Self::Target>, AccessError>
     where
         Self::Key: From<K> + Hash + Eq,
         V: Into<Self::Target>;
@@ -583,7 +583,7 @@ pub trait MutableObject {
     /// # Errors
     ///
     /// Will return `Err` if `self` is not an Object.
-    fn remove<Q>(&mut self, k: &Q) -> std::result::Result<Option<Self::Target>, AccessError>
+    fn remove<Q>(&mut self, k: &Q) -> Result<Option<Self::Target>, AccessError>
     where
         Self::Key: Borrow<Q>,
         Q: ?Sized + Hash + Eq + Ord;
@@ -634,7 +634,7 @@ pub trait MutableArray {
     /// # Errors
     ///
     /// Will return `Err` if `self` is not an array.
-    fn push<V>(&mut self, v: V) -> std::result::Result<(), AccessError>
+    fn push<V>(&mut self, v: V) -> Result<(), AccessError>
     where
         V: Into<Self::Target>;
 
@@ -656,7 +656,7 @@ pub trait MutableArray {
     /// # Errors
     ///
     /// Will return `Err` if `self` is not an array.
-    fn pop(&mut self) -> std::result::Result<Option<Self::Target>, AccessError>;
+    fn pop(&mut self) -> Result<Option<Self::Target>, AccessError>;
 
     /// Tries to pop from a `Value` as an `Array`.
     /// if the `Value` is any other type `None` will