feat!: Support no_std+alloc

Author: lu-zero

src/builder.rs

@@ -206,7 +206,8 @@ pub mod affordance;
 pub mod data_schema;
 mod human_readable_info;
 
-use std::{fmt, marker::PhantomData, ops::Not};
+use alloc::{borrow::ToOwned, fmt, string::*, vec, vec::Vec};
+use core::{marker::PhantomData, ops::Not};
 
 use hashbrown::{hash_map::Entry, HashMap};
 use oxilangtag::LanguageTag;
@@ -996,7 +997,7 @@ impl<Other: ExtendableThing, Status> ThingBuilder<Other, Status> {
                     if security_definitions.contains_key(security) {
                         Ok(())
                     } else {
-                        Err(Error::UndefinedSecurity(std::mem::take(security)))
+                        Err(Error::UndefinedSecurity(core::mem::take(security)))
                     }
                 })
             })
@@ -1847,7 +1848,7 @@ impl<T> LinkBuilder<T> {
 
 /// The builder elements related to security
 pub mod security {
-    use std::borrow::Cow;
+    use alloc::{borrow::Cow, string::*, vec::Vec};
 
     use serde_json::Value;
 
@@ -3026,7 +3027,7 @@ impl TryFrom<UncheckedLink> for Link {
 
 #[cfg(test)]
 mod tests {
-    use std::borrow::Cow;
+    use alloc::borrow::Cow;
 
     use serde::{Deserialize, Serialize};
     use serde_json::json;

src/builder/affordance.rs

@@ -5,7 +5,8 @@
 //!
 //! See the examples related to the specific affordance bulders for more information.
 
-use std::ops::Not;
+use alloc::{string::String, vec::Vec};
+use core::ops::Not;
 
 use hashbrown::HashMap;
 use serde_json::Value;
@@ -2788,6 +2789,8 @@ where
 
 #[cfg(test)]
 mod test {
+    use alloc::{borrow::ToOwned, boxed::Box, string::*, vec};
+
     use serde::{Deserialize, Serialize};
     use serde_json::json;
 

src/builder/data_schema.rs

@@ -39,7 +39,8 @@
 //! [`finish_extend`]: DataSchemaBuilder::finish_extend
 //! [`read_only`]: crate::thing::DataSchema::read_only
 //! [`write_only`]: crate::thing::DataSchema::write_only
-use std::{cmp::Ordering, marker::PhantomData, num::NonZeroU64, ops::Not};
+use alloc::{boxed::Box, string::String, vec::Vec};
+use core::{cmp::Ordering, marker::PhantomData, num::NonZeroU64, ops::Not};
 
 use hashbrown::HashMap;
 
@@ -2059,7 +2060,7 @@ macro_rules! impl_inner_delegate_schema_builder_like_integer {
         }
 
         #[inline]
-        fn multiple_of(mut self, value: std::num::NonZeroU64) -> Self {
+        fn multiple_of(mut self, value: core::num::NonZeroU64) -> Self {
             self.$inner = self.$inner.multiple_of(value);
             self
         }
@@ -4050,6 +4051,7 @@ impl<DS, AS, OS> TryFrom<UncheckedObjectSchema<DS, AS, OS>> for ObjectSchema<DS,
 
 #[cfg(test)]
 mod tests {
+    use alloc::{boxed::Box, string::*, vec};
     use serde::{Deserialize, Serialize};
     use serde_json::json;
 

src/builder/human_readable_info.rs

@@ -3,6 +3,8 @@
 //! This module contains the logic shared across multiple builders for the respective
 //! Thing Description Vocabulary definitions.
 
+use alloc::{string::*, vec::Vec};
+
 use super::MultiLanguageBuilder;
 
 /// Human readable informations and semantic tagging

src/flat_map_serialize.rs

@@ -1,3 +1,4 @@
+use alloc::vec::Vec;
 use core::fmt::{self, Display};
 use serde::ser::{self, Impossible, Serialize, SerializeMap, Serializer};
 
@@ -49,6 +50,7 @@ impl Display for Unsupported {
 
 #[cfg(any(feature = "std", feature = "alloc"))]
 mod content {
+    use alloc::{borrow::ToOwned, boxed::Box, string::String, vec::Vec};
     use core::marker::PhantomData;
     use serde::ser::{self, Serialize, Serializer};
 

src/hlist.rs

@@ -234,6 +234,7 @@ impl From<Nil> for () {
 
 #[cfg(test)]
 mod tests {
+    use alloc::string::*;
     use serde_json::{json, Value};
 
     use super::*;

src/lib.rs

@@ -73,6 +73,13 @@
 //!
 //! See [`builder`] module for more examples.
 
+#![no_std]
+
+#[cfg(feature = "std")]
+extern crate std;
+
+extern crate alloc;
+
 pub mod builder;
 pub mod extend;
 pub mod hlist;

src/protocol/coap.rs

@@ -95,6 +95,8 @@ impl ExtendableThing for CoapProtocol {
 
 #[cfg(test)]
 mod test {
+    use alloc::vec;
+
     use super::{BlockSize, CoapProtocol};
     use crate::thing::{ExpectedResponse, Form};
     fn deserialize_form(s: &str, r: Form<CoapProtocol>) {

src/protocol/http.rs

@@ -1,5 +1,7 @@
 //! HTTP Binding Template
 
+use alloc::{string::String, vec::Vec};
+
 use crate::extend::ExtendableThing;
 use serde::{Deserialize, Serialize};
 use serde_with::{serde_as, skip_serializing_none};
@@ -65,6 +67,8 @@ impl ExtendableThing for HttpProtocol {
 
 #[cfg(test)]
 mod test {
+    use alloc::vec;
+
     use super::HttpProtocol;
     use crate::thing::{ExpectedResponse, Form};
 

src/protocol/mqtt.rs

@@ -1,5 +1,7 @@
 //! MQTT Binding Template
 
+use alloc::{string::String, vec::Vec};
+
 use crate::extend::ExtendableThing;
 use serde::{Deserialize, Serialize};
 use serde_with::{serde_as, skip_serializing_none, OneOrMany};
@@ -33,7 +35,7 @@ pub enum QoS {
 pub struct Form {
     #[serde(
         rename = "mqv:retain",
-        skip_serializing_if = "std::ops::Not::not",
+        skip_serializing_if = "core::ops::Not::not",
         default
     )]
     pub retain: bool,
@@ -66,6 +68,8 @@ impl ExtendableThing for MqttProtocol {
 
 #[cfg(test)]
 mod test {
+    use alloc::vec;
+
     use super::MqttProtocol;
     use crate::thing::Form;
     use crate::thing::{DefaultedFormOperations::Custom, FormOperation::*};