1 files changed, 163 insertions, 0 deletions
diff --git a/src/address/mod.rs b/src/address/mod.rs
new file mode 100644
index 0000000..7146d01
--- /dev/null
+++ b/src/address/mod.rs
@@ -0,0 +1,163 @@
+use core::hash::Hash;
+
+use core::fmt::{self, Debug, Display, Formatter};
+
+use core::ops::{Add, Sub, AddAssign, SubAssign};
+
+use num_traits::identities;
+use num_traits::{Bounded, WrappingAdd, WrappingSub, CheckedAdd, CheckedSub};
+
+#[cfg(feature="use-serde")]
+use serde::{Deserialize, Serialize};
+
+pub trait AddressBase where Self:
+    Debug + Display + AddressDisplay +
+    Copy + Clone + Sized + Hash +
+    Ord + Eq + PartialEq + Bounded +
+    Add<Output=Self> + Sub<Output=Self> +
+    AddAssign + SubAssign +
+    WrappingAdd + WrappingSub +
+    CheckedAdd + CheckedSub +
+    Hash +
+    identities::One + identities::Zero {
+    fn to_linear(&self) -> usize;
+}
+
+#[cfg(all(feature="use-serde", feature="address-parse"))]
+pub trait Address where Self:
+    AddressBase +
+    Serialize + for<'de> Deserialize<'de> +
+    AddrParse {
+}
+
+#[cfg(all(feature="use-serde", not(feature="address-parse")))]
+pub trait Address where Self:
+    AddressBase +
+    Serialize + for<'de> Deserialize<'de> {
+}
+
+#[cfg(all(not(feature="use-serde"), feature="address-parse"))]
+pub trait Address where Self:
+    AddressBase + AddrParse {
+}
+
+#[cfg(all(not(feature="use-serde"), not(feature="address-parse")))]
+pub trait Address where Self: AddressBase { }
+
+impl AddressBase for u16 {
+    fn to_linear(&self) -> usize { *self as usize }
+}
+
+impl Address for u16 {}
+
+impl AddressBase for u32 {
+    fn to_linear(&self) -> usize { *self as usize }
+}
+
+impl Address for u32 {}
+
+impl AddressBase for u64 {
+    fn to_linear(&self) -> usize { *self as usize }
+}
+
+impl Address for u64 {}
+
+impl AddressBase for usize {
+    fn to_linear(&self) -> usize { *self }
+}
+
+impl Address for usize {}
+
+pub trait AddressDisplay {
+    fn show(&self, f: &mut Formatter) -> fmt::Result;
+}
+
+impl AddressDisplay for usize {
+    fn show(&self, f: &mut Formatter) -> fmt::Result {
+        write!(f, "{:#x}", self)
+    }
+}
+
+impl AddressDisplay for u64 {
+    fn show(&self, f: &mut Formatter) -> fmt::Result {
+        write!(f, "{:#x}", self)
+    }
+}
+
+impl AddressDisplay for u32 {
+    fn show(&self, f: &mut Formatter) -> fmt::Result {
+        write!(f, "{:#x}", self)
+    }
+}
+
+impl AddressDisplay for u16 {
+    fn show(&self, f: &mut Formatter) -> fmt::Result {
+        write!(f, "{:#x}", self)
+    }
+}
+
+/*
+ * TODO: this should be FromStr.
+ * that would require newtyping address primitives, though
+ *
+ * this is not out of the question, BUT is way more work than
+ * i want to put in right now
+ *
+ * this is one of those "clean it up later" situations
+ */
+#[cfg(feature="address-parse")]
+use core::str::FromStr;
+
+#[cfg(feature="address-parse")]
+pub trait AddrParse: Sized {
+    type Err;
+    fn parse_from(s: &str) -> Result<Self, Self::Err>;
+}
+
+#[cfg(feature="address-parse")]
+impl AddrParse for usize {
+    type Err = core::num::ParseIntError;
+    fn parse_from(s: &str) -> Result<Self, Self::Err> {
+        if s.starts_with("0x") {
+            usize::from_str_radix(&s[2..], 16)
+        } else {
+            usize::from_str(s)
+        }
+    }
+}
+
+#[cfg(feature="address-parse")]
+impl AddrParse for u64 {
+    type Err = core::num::ParseIntError;
+    fn parse_from(s: &str) -> Result<Self, Self::Err> {
+        if s.starts_with("0x") {
+            u64::from_str_radix(&s[2..], 16)
+        } else {
+            u64::from_str(s)
+        }
+    }
+}
+
+#[cfg(feature="address-parse")]
+impl AddrParse for u32 {
+    type Err = core::num::ParseIntError;
+    fn parse_from(s: &str) -> Result<Self, Self::Err> {
+        if s.starts_with("0x") {
+            u32::from_str_radix(&s[2..], 16)
+        } else {
+            u32::from_str(s)
+        }
+    }
+}
+
+#[cfg(feature="address-parse")]
+impl AddrParse for u16 {
+    type Err = core::num::ParseIntError;
+    fn parse_from(s: &str) -> Result<Self, Self::Err> {
+        if s.starts_with("0x") {
+            u16::from_str_radix(&s[2..], 16)
+        } else {
+            u16::from_str(s)
+        }
+    }
+}