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Code Issues Releases Wiki Activity

allow custom checks for resource selection

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This commit is contained in:
Nikolay Kim 2019-03-04 11:47:03 -08:00
parent fb43940824
commit 0ff0daa795
6 changed files with 82 additions and 49 deletions
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16
router/src/de.rs
View File

@ -2,7 +2,7 @@ use serde::de::{self, Deserializer, Error as DeError, Visitor};
use serde::forward_to_deserialize_any;
use crate::path::{Path, PathIter};
use crate::Resource;
use crate::ResourcePath;
macro_rules! unsupported_type {
($trait_fn:ident, $name:expr) => {
@ -33,17 +33,17 @@ macro_rules! parse_single_value {
}
}
pub struct PathDeserializer<'de, T: Resource + 'de> {
pub struct PathDeserializer<'de, T: ResourcePath + 'de> {
path: &'de Path<T>,
}
impl<'de, T: Resource + 'de> PathDeserializer<'de, T> {
impl<'de, T: ResourcePath + 'de> PathDeserializer<'de, T> {
pub fn new(path: &'de Path<T>) -> Self {
PathDeserializer { path }
}
}
impl<'de, T: Resource + 'de> Deserializer<'de> for PathDeserializer<'de, T> {
impl<'de, T: ResourcePath + 'de> Deserializer<'de> for PathDeserializer<'de, T> {
type Error = de::value::Error;
fn deserialize_map<V>(self, visitor: V) -> Result<V::Value, Self::Error>
@ -206,12 +206,12 @@ impl<'de, T: Resource + 'de> Deserializer<'de> for PathDeserializer<'de, T> {
parse_single_value!(deserialize_char, visit_char, "char");
}
struct ParamsDeserializer<'de, T: Resource> {
struct ParamsDeserializer<'de, T: ResourcePath> {
params: PathIter<'de, T>,
current: Option<(&'de str, &'de str)>,
}
impl<'de, T: Resource> de::MapAccess<'de> for ParamsDeserializer<'de, T> {
impl<'de, T: ResourcePath> de::MapAccess<'de> for ParamsDeserializer<'de, T> {
type Error = de::value::Error;
fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Self::Error>
@ -406,11 +406,11 @@ impl<'de> Deserializer<'de> for Value<'de> {
unsupported_type!(deserialize_identifier, "identifier");
}
struct ParamsSeq<'de, T: Resource> {
struct ParamsSeq<'de, T: ResourcePath> {
params: PathIter<'de, T>,
}
impl<'de, T: Resource> de::SeqAccess<'de> for ParamsSeq<'de, T> {
impl<'de, T: ResourcePath> de::SeqAccess<'de> for ParamsSeq<'de, T> {
type Error = de::value::Error;
fn next_element_seed<U>(&mut self, seed: U) -> Result<Option<U::Value>, Self::Error>

16
router/src/lib.rs
View File

@ -9,23 +9,27 @@ pub use self::path::Path;
pub use self::resource::ResourceDef;
pub use self::router::{ResourceInfo, Router, RouterBuilder};
pub trait Resource {
pub trait Resource<T: ResourcePath> {
fn resource_path(&mut self) -> &mut Path<T>;
}
pub trait ResourcePath {
fn path(&self) -> &str;
}
impl Resource for String {
impl ResourcePath for String {
fn path(&self) -> &str {
self.as_str()
}
}
impl<'a> Resource for &'a str {
impl<'a> ResourcePath for &'a str {
fn path(&self) -> &str {
self
}
}
impl<T: AsRef<[u8]>> Resource for string::String<T> {
impl<T: AsRef<[u8]>> ResourcePath for string::String<T> {
fn path(&self) -> &str {
&*self
}
@ -39,10 +43,10 @@ pub use self::url::Url;
#[cfg(feature = "http")]
mod http_support {
use super::Resource;
use super::ResourcePath;
use http::Uri;
impl Resource for Uri {
impl ResourcePath for Uri {
fn path(&self) -> &str {
self.path()
}

10
router/src/path.rs
View File

@ -4,7 +4,7 @@ use std::rc::Rc;
use serde::de;
use crate::de::PathDeserializer;
use crate::Resource;
use crate::ResourcePath;
#[derive(Debug, Clone, Copy)]
pub(crate) enum PathItem {
@ -42,7 +42,7 @@ impl<T: Clone> Clone for Path<T> {
}
}
impl<T: Resource> Path<T> {
impl<T: ResourcePath> Path<T> {
pub fn new(path: T) -> Path<T> {
Path {
path,
@ -165,7 +165,7 @@ pub struct PathIter<'a, T> {
params: &'a Path<T>,
}
impl<'a, T: Resource> Iterator for PathIter<'a, T> {
impl<'a, T: ResourcePath> Iterator for PathIter<'a, T> {
type Item = (&'a str, &'a str);
#[inline]
@ -183,7 +183,7 @@ impl<'a, T: Resource> Iterator for PathIter<'a, T> {
}
}
impl<'a, T: Resource> Index<&'a str> for Path<T> {
impl<'a, T: ResourcePath> Index<&'a str> for Path<T> {
type Output = str;
fn index(&self, name: &'a str) -> &str {
@ -192,7 +192,7 @@ impl<'a, T: Resource> Index<&'a str> for Path<T> {
}
}
impl<T: Resource> Index<usize> for Path<T> {
impl<T: ResourcePath> Index<usize> for Path<T> {
type Output = str;
fn index(&self, idx: usize) -> &str {

4
router/src/resource.rs
View File

@ -5,7 +5,7 @@ use std::rc::Rc;
use regex::{escape, Regex};
use crate::path::{Path, PathItem};
use crate::Resource;
use crate::ResourcePath;
const MAX_DYNAMIC_SEGMENTS: usize = 16;
@ -119,7 +119,7 @@ impl ResourceDef {
}
/// Is the given path and parameters a match against this pattern?
pub fn match_path<T: Resource>(&self, path: &mut Path<T>) -> bool {
pub fn match_path<T: ResourcePath>(&self, path: &mut Path<T>) -> bool {
match self.tp {
PatternType::Static(ref s) => {
if s == path.path() {

81
router/src/router.rs
View File

@ -1,9 +1,8 @@
use std::collections::HashMap;
use std::rc::Rc;
use crate::path::Path;
use crate::resource::ResourceDef;
use crate::Resource;
use crate::{Resource, ResourcePath};
#[derive(Debug, Copy, Clone, PartialEq)]
pub(crate) enum ResourceId {
@ -26,14 +25,14 @@ pub(crate) struct ResourceMap {
}
/// Resource router.
pub struct Router<T> {
pub struct Router<T, U = ()> {
rmap: Rc<ResourceMap>,
named: HashMap<String, ResourceDef>,
resources: Vec<T>,
resources: Vec<(T, Option<U>)>,
}
impl<T> Router<T> {
pub fn build() -> RouterBuilder<T> {
impl<T, U> Router<T, U> {
pub fn build() -> RouterBuilder<T, U> {
RouterBuilder {
rmap: ResourceMap::default(),
named: HashMap::new(),
@ -41,48 +40,71 @@ impl<T> Router<T> {
}
}
pub fn recognize<U: Resource>(&self, path: &mut Path<U>) -> Option<(&T, ResourceInfo)> {
pub fn recognize<R: Resource<P>, P: ResourcePath>(
&self,
res: &mut R,
) -> Option<(&T, ResourceInfo)> {
for (idx, resource) in self.rmap.patterns.iter().enumerate() {
if resource.match_path(path) {
if resource.match_path(res.resource_path()) {
let info = ResourceInfo {
rmap: self.rmap.clone(),
resource: ResourceId::Normal(idx as u16),
};
return Some((&self.resources[idx], info));
return Some((&self.resources[idx].0, info));
}
}
None
}
pub fn recognize_mut<U: Resource>(
pub fn recognize_mut<R: Resource<P>, P: ResourcePath>(
&mut self,
path: &mut Path<U>,
res: &mut R,
) -> Option<(&mut T, ResourceInfo)> {
for (idx, resource) in self.rmap.patterns.iter().enumerate() {
if resource.match_path(path) {
if resource.match_path(res.resource_path()) {
let info = ResourceInfo {
rmap: self.rmap.clone(),
resource: ResourceId::Normal(idx as u16),
};
return Some((&mut self.resources[idx], info));
return Some((&mut self.resources[idx].0, info));
}
}
None
}
pub fn recognize_mut_checked<R: Resource<P>, P: ResourcePath, F>(
&mut self,
res: &mut R,
check: F,
) -> Option<(&mut T, ResourceInfo)>
where
F: Fn(&R, &Option<U>) -> bool,
{
for (idx, resource) in self.rmap.patterns.iter().enumerate() {
if resource.match_path(res.resource_path()) && check(res, &self.resources[idx].1) {
let info = ResourceInfo {
rmap: self.rmap.clone(),
resource: ResourceId::Normal(idx as u16),
};
return Some((&mut self.resources[idx].0, info));
}
}
None
}
}
impl<'a, T> IntoIterator for &'a Router<T> {
type Item = &'a T;
type IntoIter = std::slice::Iter<'a, T>;
impl<'a, T, U> IntoIterator for &'a Router<T, U> {
type Item = &'a (T, Option<U>);
type IntoIter = std::slice::Iter<'a, (T, Option<U>)>;
fn into_iter(self) -> Self::IntoIter {
self.resources.iter()
}
}
impl<'a, T> IntoIterator for &'a mut Router<T> {
type Item = &'a mut T;
type IntoIter = std::slice::IterMut<'a, T>;
impl<'a, T, U> IntoIterator for &'a mut Router<T, U> {
type Item = &'a mut (T, Option<U>);
type IntoIter = std::slice::IterMut<'a, (T, Option<U>)>;
fn into_iter(self) -> Self::IntoIter {
self.resources.iter_mut()
@ -104,33 +126,40 @@ impl ResourceMap {
}
}
pub struct RouterBuilder<T> {
pub struct RouterBuilder<T, U> {
rmap: ResourceMap,
named: HashMap<String, ResourceDef>,
resources: Vec<T>,
resources: Vec<(T, Option<U>)>,
}
impl<T> RouterBuilder<T> {
impl<T, U> RouterBuilder<T, U> {
/// Register resource for specified path.
pub fn path(&mut self, path: &str, resource: T) {
self.rmap.register(ResourceDef::new(path));
self.resources.push(resource);
self.resources.push((resource, None));
}
/// Register resource for specified path prefix.
pub fn prefix(&mut self, prefix: &str, resource: T) {
self.rmap.register(ResourceDef::prefix(prefix));
self.resources.push(resource);
self.resources.push((resource, None));
}
/// Register resource for ResourceDef
pub fn rdef(&mut self, rdef: ResourceDef, resource: T) {
self.rmap.register(rdef);
self.resources.push(resource);
self.resources.push((resource, None));
}
/// Method attachs user data to lastly added resource.
///
/// This panics if no resources were added.
pub fn set_user_data(&mut self, userdata: Option<U>) {
self.resources.last_mut().unwrap().1 = userdata;
}
/// Finish configuration and create router instance.
pub fn finish(self) -> Router<T> {
pub fn finish(self) -> Router<T, U> {
Router {
rmap: Rc::new(self.rmap),
named: self.named,

4
router/src/url.rs
View File

@ -1,6 +1,6 @@
use std::rc::Rc;
use crate::Resource;
use crate::ResourcePath;
#[allow(dead_code)]
const GEN_DELIMS: &[u8] = b":/?#[]@";
@ -67,7 +67,7 @@ impl Url {
}
}
impl Resource for Url {
impl ResourcePath for Url {
fn path(&self) -> &str {
self.path()
}