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allow primitive types for Path extractor

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This commit is contained in:
Nikolay Kim 2018-03-31 17:12:08 -07:00
parent 23cfa649f4
commit 97e2bcd055
2 changed files with 108 additions and 24 deletions
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122
src/de.rs
View File

@ -1,5 +1,6 @@
use std::slice::Iter;
use std::borrow::Cow;
use std::convert::AsRef;
use std::ops::{Deref, DerefMut};
use serde_urlencoded;
@ -65,6 +66,13 @@ pub struct Path<T>{
inner: T
}
impl<T> AsRef<T> for Path<T> {
fn as_ref(&self) -> &T {
&self.inner
}
}
impl<T> Deref for Path<T> {
type Target = T;
@ -175,6 +183,26 @@ macro_rules! unsupported_type {
};
}
macro_rules! parse_single_value {
($trait_fn:ident, $visit_fn:ident, $tp:tt) => {
fn $trait_fn<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where V: Visitor<'de>
{
if self.req.match_info().len() != 1 {
Err(de::value::Error::custom(
format!("wrong number of parameters: {} expected 1",
self.req.match_info().len()).as_str()))
} else {
let v = self.req.match_info()[0].parse().map_err(
|_| de::value::Error::custom(
format!("can not parse {:?} to a {}",
&self.req.match_info()[0], $tp)))?;
visitor.$visit_fn(v)
}
}
}
}
pub struct PathDeserializer<'de, S: 'de> {
req: &'de HttpRequest<S>
}
@ -200,8 +228,7 @@ impl<'de, S: 'de> Deserializer<'de> for PathDeserializer<'de, S>
}
fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
where V: Visitor<'de>,
{
visitor.visit_unit()
}
@ -232,12 +259,18 @@ impl<'de, S: 'de> Deserializer<'de> for PathDeserializer<'de, S>
}
}
fn deserialize_tuple_struct<V>(self, _: &'static str, _: usize, visitor: V)
fn deserialize_tuple_struct<V>(self, _: &'static str, len: usize, visitor: V)
-> Result<V::Value, Self::Error>
where V: Visitor<'de>
{
if self.req.match_info().len() < len {
Err(de::value::Error::custom(
format!("wrong number of parameters: {} expected {}",
self.req.match_info().len(), len).as_str()))
} else {
visitor.visit_seq(ParamsSeq{params: self.req.match_info().iter()})
}
}
fn deserialize_enum<V>(self, _: &'static str, _: &'static [&'static str], _: V)
-> Result<V::Value, Self::Error>
@ -246,27 +279,44 @@ impl<'de, S: 'de> Deserializer<'de> for PathDeserializer<'de, S>
Err(de::value::Error::custom("unsupported type: enum"))
}
fn deserialize_str<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where V: Visitor<'de>,
{
if self.req.match_info().len() != 1 {
Err(de::value::Error::custom(
format!("wrong number of parameters: {} expected 1",
self.req.match_info().len()).as_str()))
} else {
visitor.visit_str(&self.req.match_info()[0])
}
}
fn deserialize_seq<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where V: Visitor<'de>
{
visitor.visit_seq(ParamsSeq{params: self.req.match_info().iter()})
}
unsupported_type!(deserialize_any, "'any'");
unsupported_type!(deserialize_bool, "bool");
unsupported_type!(deserialize_i8, "i8");
unsupported_type!(deserialize_i16, "i16");
unsupported_type!(deserialize_i32, "i32");
unsupported_type!(deserialize_i64, "i64");
unsupported_type!(deserialize_u8, "u8");
unsupported_type!(deserialize_u16, "u16");
unsupported_type!(deserialize_u32, "u32");
unsupported_type!(deserialize_u64, "u64");
unsupported_type!(deserialize_f32, "f32");
unsupported_type!(deserialize_f64, "f64");
unsupported_type!(deserialize_char, "char");
unsupported_type!(deserialize_str, "str");
unsupported_type!(deserialize_string, "String");
unsupported_type!(deserialize_bytes, "bytes");
unsupported_type!(deserialize_byte_buf, "byte buf");
unsupported_type!(deserialize_option, "Option<T>");
unsupported_type!(deserialize_seq, "sequence");
unsupported_type!(deserialize_identifier, "identifier");
unsupported_type!(deserialize_ignored_any, "ignored_any");
parse_single_value!(deserialize_bool, visit_bool, "bool");
parse_single_value!(deserialize_i8, visit_i8, "i8");
parse_single_value!(deserialize_i16, visit_i16, "i16");
parse_single_value!(deserialize_i32, visit_i32, "i16");
parse_single_value!(deserialize_i64, visit_i64, "i64");
parse_single_value!(deserialize_u8, visit_u8, "u8");
parse_single_value!(deserialize_u16, visit_u16, "u16");
parse_single_value!(deserialize_u32, visit_u32, "u32");
parse_single_value!(deserialize_u64, visit_u64, "u64");
parse_single_value!(deserialize_f32, visit_f32, "f32");
parse_single_value!(deserialize_f64, visit_f64, "f64");
parse_single_value!(deserialize_string, visit_string, "String");
parse_single_value!(deserialize_byte_buf, visit_string, "String");
parse_single_value!(deserialize_char, visit_char, "char");
}
struct ParamsDeserializer<'de> {
@ -326,14 +376,14 @@ impl<'de> Deserializer<'de> for Key<'de> {
}
macro_rules! parse_value {
($trait_fn:ident, $visitor_fn:ident, $tp:tt) => {
($trait_fn:ident, $visit_fn:ident, $tp:tt) => {
fn $trait_fn<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where V: Visitor<'de>
{
let v = self.value.parse().map_err(
|_| de::value::Error::custom(
format!("can not parse {:?} to a {}", self.value, $tp)))?;
visitor.$visitor_fn(v)
visitor.$visit_fn(v)
}
}
}
@ -432,7 +482,7 @@ impl<'de> Deserializer<'de> for Value<'de>
Err(de::value::Error::custom("unsupported type: tuple struct"))
}
unsupported_type!(deserialize_any, "");
unsupported_type!(deserialize_any, "any");
unsupported_type!(deserialize_seq, "seq");
unsupported_type!(deserialize_map, "map");
unsupported_type!(deserialize_identifier, "identifier");
@ -565,7 +615,7 @@ mod tests {
match Path::<Test2>::from_request(&req).poll().unwrap() {
Async::Ready(s) => {
assert_eq!(s.key, "name");
assert_eq!(s.as_ref().key, "name");
assert_eq!(s.value, 32);
},
_ => unreachable!(),
@ -578,5 +628,31 @@ mod tests {
},
_ => unreachable!(),
}
match Path::<Vec<String>>::from_request(&req).poll().unwrap() {
Async::Ready(s) => {
assert_eq!(s.into_inner(), vec!["name".to_owned(), "32".to_owned()]);
},
_ => unreachable!(),
}
}
#[test]
fn test_extract_path_signle() {
let mut resource = Resource::<()>::default();
resource.name("index");
let mut routes = Vec::new();
routes.push((Pattern::new("index", "/{value}/"), Some(resource)));
let (router, _) = Router::new("", ServerSettings::default(), routes);
let mut req = TestRequest::with_uri("/32/").finish();
assert!(router.recognize(&mut req).is_some());
match Path::<i8>::from_request(&req).poll().unwrap() {
Async::Ready(s) => {
assert_eq!(s.into_inner(), 32);
},
_ => unreachable!(),
}
}
}

8
src/param.rs
View File

@ -97,6 +97,14 @@ impl<'a, 'b, 'c: 'a> Index<&'b str> for &'c Params<'a> {
}
}
impl<'a, 'c: 'a> Index<usize> for &'c Params<'a> {
type Output = str;
fn index(&self, idx: usize) -> &str {
self.0[idx].1.as_ref()
}
}
/// Creates a `PathBuf` from a path parameter. The returned `PathBuf` is
/// percent-decoded. If a segment is equal to "..", the previous segment (if
/// any) is skipped.