Add a bunch of From impls for Lit
Fixes #42
diff --git a/src/lit.rs b/src/lit.rs
index c1a2876..cbe51b9 100644
--- a/src/lit.rs
+++ b/src/lit.rs
@@ -29,6 +29,42 @@
Raw(usize),
}
+impl From<String> for Lit {
+ fn from(input: String) -> Lit {
+ Lit::Str(input, StrStyle::Cooked)
+ }
+}
+
+impl<'a> From<&'a str> for Lit {
+ fn from(input: &str) -> Lit {
+ Lit::Str(input.into(), StrStyle::Cooked)
+ }
+}
+
+impl From<Vec<u8>> for Lit {
+ fn from(input: Vec<u8>) -> Lit {
+ Lit::ByteStr(input)
+ }
+}
+
+impl<'a> From<&'a [u8]> for Lit {
+ fn from(input: &[u8]) -> Lit {
+ Lit::ByteStr(input.into())
+ }
+}
+
+impl From<char> for Lit {
+ fn from(input: char) -> Lit {
+ Lit::Char(input)
+ }
+}
+
+impl From<bool> for Lit {
+ fn from(input: bool) -> Lit {
+ Lit::Bool(input)
+ }
+}
+
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub enum IntTy {
Isize,
@@ -51,6 +87,45 @@
Unsuffixed,
}
+macro_rules! impl_from_for_lit {
+ (Int, [$($rust_type:ty => $syn_type:expr),+]) => {
+ $(
+ impl From<$rust_type> for Lit {
+ fn from(input: $rust_type) -> Lit {
+ Lit::Int(input as u64, $syn_type)
+ }
+ }
+ )+
+ };
+ (Float, [$($rust_type:ty => $syn_type:expr),+]) => {
+ $(
+ impl From<$rust_type> for Lit {
+ fn from(input: $rust_type) -> Lit {
+ Lit::Float(format!("{}", input), $syn_type)
+ }
+ }
+ )+
+ };
+}
+
+impl_from_for_lit! {Int, [
+ isize => IntTy::Isize,
+ i8 => IntTy::I8,
+ i16 => IntTy::I16,
+ i32 => IntTy::I32,
+ i64 => IntTy::I64,
+ usize => IntTy::Usize,
+ u8 => IntTy::U8,
+ u16 => IntTy::U16,
+ u32 => IntTy::U32,
+ u64 => IntTy::U64
+]}
+
+impl_from_for_lit! {Float, [
+ f32 => FloatTy::F32,
+ f64 => FloatTy::F64
+]}
+
#[cfg(feature = "parsing")]
pub mod parsing {
use super::*;