From 8cdfa445d6629ffef4cb84967ff7017654045bc2 Mon Sep 17 00:00:00 2001
From: mo khan <mo@mokhan.ca>
Date: Wed, 2 Jul 2025 18:36:06 -0600
Subject: chore: add vendor directory

---
 vendor/fixedbitset/src/serde_impl.rs | 150 +++++++++++++++++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100644 vendor/fixedbitset/src/serde_impl.rs

(limited to 'vendor/fixedbitset/src/serde_impl.rs')

diff --git a/vendor/fixedbitset/src/serde_impl.rs b/vendor/fixedbitset/src/serde_impl.rs
new file mode 100644
index 00000000..98231599
--- /dev/null
+++ b/vendor/fixedbitset/src/serde_impl.rs
@@ -0,0 +1,150 @@
+#[cfg(not(feature = "std"))]
+use core as std;
+
+use crate::{Block, FixedBitSet, BYTES};
+use alloc::vec::Vec;
+use core::{convert::TryFrom, fmt};
+use serde::de::{self, Deserialize, Deserializer, MapAccess, SeqAccess, Visitor};
+use serde::ser::{Serialize, SerializeStruct, Serializer};
+
+struct BitSetByteSerializer<'a>(&'a FixedBitSet);
+
+impl Serialize for FixedBitSet {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let mut struct_serializer = serializer.serialize_struct("FixedBitset", 2)?;
+        struct_serializer.serialize_field("length", &(self.length as u64))?;
+        struct_serializer.serialize_field("data", &BitSetByteSerializer(self))?;
+        struct_serializer.end()
+    }
+}
+
+impl<'a> Serialize for BitSetByteSerializer<'a> {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        let len = self.0.as_slice().len() * BYTES;
+        // PERF: Figure out a way to do this without allocating.
+        let mut temp = Vec::with_capacity(len);
+        for block in self.0.as_slice() {
+            temp.extend(&block.to_le_bytes());
+        }
+        serializer.serialize_bytes(&temp)
+    }
+}
+
+impl<'de> Deserialize<'de> for FixedBitSet {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        enum Field {
+            Length,
+            Data,
+        }
+
+        fn bytes_to_data(length: usize, input: &[u8]) -> Vec<Block> {
+            let block_len = length / BYTES + 1;
+            let mut data = Vec::with_capacity(block_len);
+            for chunk in input.chunks(BYTES) {
+                match <&[u8; BYTES]>::try_from(chunk) {
+                    Ok(bytes) => data.push(usize::from_le_bytes(*bytes)),
+                    Err(_) => {
+                        let mut bytes = [0u8; BYTES];
+                        bytes[0..BYTES].copy_from_slice(chunk);
+                        data.push(usize::from_le_bytes(bytes));
+                    }
+                }
+            }
+            data
+        }
+
+        impl<'de> Deserialize<'de> for Field {
+            fn deserialize<D>(deserializer: D) -> Result<Field, D::Error>
+            where
+                D: Deserializer<'de>,
+            {
+                struct FieldVisitor;
+
+                impl<'de> Visitor<'de> for FieldVisitor {
+                    type Value = Field;
+
+                    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                        formatter.write_str("`length` or `data`")
+                    }
+
+                    fn visit_str<E>(self, value: &str) -> Result<Field, E>
+                    where
+                        E: de::Error,
+                    {
+                        match value {
+                            "length" => Ok(Field::Length),
+                            "data" => Ok(Field::Data),
+                            _ => Err(de::Error::unknown_field(value, FIELDS)),
+                        }
+                    }
+                }
+
+                deserializer.deserialize_identifier(FieldVisitor)
+            }
+        }
+
+        struct FixedBitSetVisitor;
+
+        impl<'de> Visitor<'de> for FixedBitSetVisitor {
+            type Value = FixedBitSet;
+
+            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                formatter.write_str("struct Duration")
+            }
+
+            fn visit_seq<V>(self, mut seq: V) -> Result<FixedBitSet, V::Error>
+            where
+                V: SeqAccess<'de>,
+            {
+                let length = seq
+                    .next_element()?
+                    .ok_or_else(|| de::Error::invalid_length(0, &self))?;
+                let data: &[u8] = seq
+                    .next_element()?
+                    .ok_or_else(|| de::Error::invalid_length(1, &self))?;
+                let data = bytes_to_data(length, data);
+                Ok(FixedBitSet::with_capacity_and_blocks(length, data))
+            }
+
+            fn visit_map<V>(self, mut map: V) -> Result<FixedBitSet, V::Error>
+            where
+                V: MapAccess<'de>,
+            {
+                let mut length = None;
+                let mut temp: Option<&[u8]> = None;
+                while let Some(key) = map.next_key()? {
+                    match key {
+                        Field::Length => {
+                            if length.is_some() {
+                                return Err(de::Error::duplicate_field("length"));
+                            }
+                            length = Some(map.next_value()?);
+                        }
+                        Field::Data => {
+                            if temp.is_some() {
+                                return Err(de::Error::duplicate_field("data"));
+                            }
+                            temp = Some(map.next_value()?);
+                        }
+                    }
+                }
+                let length = length.ok_or_else(|| de::Error::missing_field("length"))?;
+                let data = temp.ok_or_else(|| de::Error::missing_field("data"))?;
+                let data = bytes_to_data(length, data);
+                Ok(FixedBitSet::with_capacity_and_blocks(length, data))
+            }
+        }
+
+        const FIELDS: &'static [&'static str] = &["length", "data"];
+        deserializer.deserialize_struct("Duration", FIELDS, FixedBitSetVisitor)
+    }
+}
-- 
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