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| </pre><pre class="rust"><code><span class="doccomment">//! Sources for key-value pairs. |
| |
| </span><span class="attribute">#[cfg(feature = <span class="string">"kv_unstable_sval"</span>)] |
| </span><span class="kw">extern crate </span>sval; |
| <span class="attribute">#[cfg(feature = <span class="string">"kv_unstable_sval"</span>)] |
| </span><span class="kw">extern crate </span>sval_ref; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"kv_unstable_serde"</span>)] |
| </span><span class="kw">extern crate </span>serde; |
| |
| <span class="kw">use </span>kv::{Error, Key, ToKey, ToValue, Value}; |
| <span class="kw">use </span>std::fmt; |
| |
| <span class="doccomment">/// A source of key-value pairs. |
| /// |
| /// The source may be a single pair, a set of pairs, or a filter over a set of pairs. |
| /// Use the [`Visitor`](trait.Visitor.html) trait to inspect the structured data |
| /// in a source. |
| </span><span class="kw">pub trait </span>Source { |
| <span class="doccomment">/// Visit key-value pairs. |
| /// |
| /// A source doesn't have to guarantee any ordering or uniqueness of key-value pairs. |
| /// If the given visitor returns an error then the source may early-return with it, |
| /// even if there are more key-value pairs. |
| /// |
| /// # Implementation notes |
| /// |
| /// A source should yield the same key-value pairs to a subsequent visitor unless |
| /// that visitor itself fails. |
| </span><span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error>; |
| |
| <span class="doccomment">/// Get the value for a given key. |
| /// |
| /// If the key appears multiple times in the source then which key is returned |
| /// is implementation specific. |
| /// |
| /// # Implementation notes |
| /// |
| /// A source that can provide a more efficient implementation of this method |
| /// should override it. |
| </span><span class="attribute">#[cfg(not(test))] |
| </span><span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| get_default(<span class="self">self</span>, key) |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>>; |
| |
| <span class="doccomment">/// Count the number of key-value pairs that can be visited. |
| /// |
| /// # Implementation notes |
| /// |
| /// A source that knows the number of key-value pairs upfront may provide a more |
| /// efficient implementation. |
| /// |
| /// A subsequent call to `visit` should yield the same number of key-value pairs |
| /// to the visitor, unless that visitor fails part way through. |
| </span><span class="attribute">#[cfg(not(test))] |
| </span><span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| count_default(<span class="self">self</span>) |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize; |
| } |
| |
| <span class="doccomment">/// The default implemention of `Source::get` |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>get_default<<span class="lifetime">'v</span>>(source: <span class="kw-2">&</span><span class="lifetime">'v </span>(<span class="kw">impl </span>Source + <span class="question-mark">?</span>Sized), key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| <span class="kw">struct </span>Get<<span class="lifetime">'k</span>, <span class="lifetime">'v</span>> { |
| key: Key<<span class="lifetime">'k</span>>, |
| found: <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'k</span>, <span class="lifetime">'kvs</span>> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>Get<<span class="lifetime">'k</span>, <span class="lifetime">'kvs</span>> { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="kw">if </span><span class="self">self</span>.key == key { |
| <span class="self">self</span>.found = <span class="prelude-val">Some</span>(value); |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>get = Get { key, found: <span class="prelude-val">None </span>}; |
| |
| <span class="kw">let _ </span>= source.visit(<span class="kw-2">&mut </span>get); |
| get.found |
| } |
| |
| <span class="doccomment">/// The default implementation of `Source::count`. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>count_default(source: <span class="kw">impl </span>Source) -> usize { |
| <span class="kw">struct </span>Count(usize); |
| |
| <span class="kw">impl</span><<span class="lifetime">'kvs</span>> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>Count { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, <span class="kw">_</span>: Key<<span class="lifetime">'kvs</span>>, <span class="kw">_</span>: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.<span class="number">0 </span>+= <span class="number">1</span>; |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>count = Count(<span class="number">0</span>); |
| <span class="kw">let _ </span>= source.visit(<span class="kw-2">&mut </span>count); |
| count.<span class="number">0 |
| </span>} |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T> Source <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>T |
| <span class="kw">where |
| </span>T: Source + <span class="question-mark">?</span>Sized, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| Source::visit(<span class="kw-2">&**</span><span class="self">self</span>, visitor) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| Source::get(<span class="kw-2">&**</span><span class="self">self</span>, key) |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| Source::count(<span class="kw-2">&**</span><span class="self">self</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><K, V> Source <span class="kw">for </span>(K, V) |
| <span class="kw">where |
| </span>K: ToKey, |
| V: ToValue, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| visitor.visit_pair(<span class="self">self</span>.<span class="number">0</span>.to_key(), <span class="self">self</span>.<span class="number">1</span>.to_value()) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| <span class="kw">if </span><span class="self">self</span>.<span class="number">0</span>.to_key() == key { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="number">1</span>.to_value()) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="number">1 |
| </span>} |
| } |
| |
| <span class="kw">impl</span><S> Source <span class="kw">for </span>[S] |
| <span class="kw">where |
| </span>S: Source, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="kw">for </span>source <span class="kw">in </span><span class="self">self </span>{ |
| source.visit(visitor)<span class="question-mark">?</span>; |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| <span class="kw">for </span>source <span class="kw">in </span><span class="self">self </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(found) = source.get(key.clone()) { |
| <span class="kw">return </span><span class="prelude-val">Some</span>(found); |
| } |
| } |
| |
| <span class="prelude-val">None |
| </span>} |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.len() |
| } |
| } |
| |
| <span class="kw">impl</span><S> Source <span class="kw">for </span><span class="prelude-ty">Option</span><S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>source) = <span class="kw-2">*</span><span class="self">self </span>{ |
| source.visit(visitor)<span class="question-mark">?</span>; |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| <span class="self">self</span>.as_ref().and_then(|s| s.get(key)) |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.as_ref().map(Source::count).unwrap_or(<span class="number">0</span>) |
| } |
| } |
| |
| <span class="doccomment">/// A visitor for the key-value pairs in a [`Source`](trait.Source.html). |
| </span><span class="kw">pub trait </span>Visitor<<span class="lifetime">'kvs</span>> { |
| <span class="doccomment">/// Visit a key-value pair. |
| </span><span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error>; |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'kvs</span>, T> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>T |
| <span class="kw">where |
| </span>T: Visitor<<span class="lifetime">'kvs</span>> + <span class="question-mark">?</span>Sized, |
| { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| (<span class="kw-2">**</span><span class="self">self</span>).visit_pair(key, value) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'b</span>: <span class="lifetime">'a</span>, <span class="lifetime">'kvs</span>> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>fmt::DebugMap<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>> { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.entry(<span class="kw-2">&</span>key, <span class="kw-2">&</span>value); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'b</span>: <span class="lifetime">'a</span>, <span class="lifetime">'kvs</span>> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>fmt::DebugList<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>> { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.entry(<span class="kw-2">&</span>(key, value)); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'b</span>: <span class="lifetime">'a</span>, <span class="lifetime">'kvs</span>> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>fmt::DebugSet<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>> { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.entry(<span class="kw-2">&</span>(key, value)); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'b</span>: <span class="lifetime">'a</span>, <span class="lifetime">'kvs</span>> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>fmt::DebugTuple<<span class="lifetime">'a</span>, <span class="lifetime">'b</span>> { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.field(<span class="kw-2">&</span>key); |
| <span class="self">self</span>.field(<span class="kw-2">&</span>value); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">mod </span>std_support { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span>std::borrow::Borrow; |
| <span class="kw">use </span>std::collections::{BTreeMap, HashMap}; |
| <span class="kw">use </span>std::hash::{BuildHasher, Hash}; |
| |
| <span class="kw">impl</span><S> Source <span class="kw">for </span>Box<S> |
| <span class="kw">where |
| </span>S: Source + <span class="question-mark">?</span>Sized, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| Source::visit(<span class="kw-2">&**</span><span class="self">self</span>, visitor) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| Source::get(<span class="kw-2">&**</span><span class="self">self</span>, key) |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| Source::count(<span class="kw-2">&**</span><span class="self">self</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><S> Source <span class="kw">for </span>Vec<S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| Source::visit(<span class="kw-2">&**</span><span class="self">self</span>, visitor) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| Source::get(<span class="kw-2">&**</span><span class="self">self</span>, key) |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| Source::count(<span class="kw-2">&**</span><span class="self">self</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'kvs</span>, V> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>Box<V> |
| <span class="kw">where |
| </span>V: Visitor<<span class="lifetime">'kvs</span>> + <span class="question-mark">?</span>Sized, |
| { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| (<span class="kw-2">**</span><span class="self">self</span>).visit_pair(key, value) |
| } |
| } |
| |
| <span class="kw">impl</span><K, V, S> Source <span class="kw">for </span>HashMap<K, V, S> |
| <span class="kw">where |
| </span>K: ToKey + Borrow<str> + Eq + Hash, |
| V: ToValue, |
| S: BuildHasher, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="kw">for </span>(key, value) <span class="kw">in </span><span class="self">self </span>{ |
| visitor.visit_pair(key.to_key(), value.to_value())<span class="question-mark">?</span>; |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| HashMap::get(<span class="self">self</span>, key.as_str()).map(|v| v.to_value()) |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.len() |
| } |
| } |
| |
| <span class="kw">impl</span><K, V> Source <span class="kw">for </span>BTreeMap<K, V> |
| <span class="kw">where |
| </span>K: ToKey + Borrow<str> + Ord, |
| V: ToValue, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="kw">for </span>(key, value) <span class="kw">in </span><span class="self">self </span>{ |
| visitor.visit_pair(key.to_key(), value.to_value())<span class="question-mark">?</span>; |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| BTreeMap::get(<span class="self">self</span>, key.as_str()).map(|v| v.to_value()) |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.len() |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span>kv::value::tests::Token; |
| <span class="kw">use </span>std::collections::{BTreeMap, HashMap}; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>count() { |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, Source::count(<span class="kw-2">&</span>Box::new((<span class="string">"a"</span>, <span class="number">1</span>)))); |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, Source::count(<span class="kw-2">&</span><span class="macro">vec!</span>[(<span class="string">"a"</span>, <span class="number">1</span>), (<span class="string">"b"</span>, <span class="number">2</span>)])); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>get() { |
| <span class="kw">let </span>source = <span class="macro">vec!</span>[(<span class="string">"a"</span>, <span class="number">1</span>), (<span class="string">"b"</span>, <span class="number">2</span>), (<span class="string">"a"</span>, <span class="number">1</span>)]; |
| <span class="macro">assert_eq!</span>( |
| Token::I64(<span class="number">1</span>), |
| Source::get(<span class="kw-2">&</span>source, Key::from_str(<span class="string">"a"</span>)).unwrap().to_token() |
| ); |
| |
| <span class="kw">let </span>source = Box::new(Option::None::<(<span class="kw-2">&</span>str, i32)>); |
| <span class="macro">assert!</span>(Source::get(<span class="kw-2">&</span>source, Key::from_str(<span class="string">"a"</span>)).is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>hash_map() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = HashMap::new(); |
| map.insert(<span class="string">"a"</span>, <span class="number">1</span>); |
| map.insert(<span class="string">"b"</span>, <span class="number">2</span>); |
| |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, Source::count(<span class="kw-2">&</span>map)); |
| <span class="macro">assert_eq!</span>( |
| Token::I64(<span class="number">1</span>), |
| Source::get(<span class="kw-2">&</span>map, Key::from_str(<span class="string">"a"</span>)).unwrap().to_token() |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>btree_map() { |
| <span class="kw">let </span><span class="kw-2">mut </span>map = BTreeMap::new(); |
| map.insert(<span class="string">"a"</span>, <span class="number">1</span>); |
| map.insert(<span class="string">"b"</span>, <span class="number">2</span>); |
| |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, Source::count(<span class="kw-2">&</span>map)); |
| <span class="macro">assert_eq!</span>( |
| Token::I64(<span class="number">1</span>), |
| Source::get(<span class="kw-2">&</span>map, Key::from_str(<span class="string">"a"</span>)).unwrap().to_token() |
| ); |
| } |
| } |
| } |
| |
| <span class="doccomment">/// The result of calling `Source::as_map`. |
| </span><span class="kw">pub struct </span>AsMap<S>(S); |
| |
| <span class="doccomment">/// Visit this source as a map. |
| </span><span class="kw">pub fn </span>as_map<S>(source: S) -> AsMap<S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| AsMap(source) |
| } |
| |
| <span class="kw">impl</span><S> Source <span class="kw">for </span>AsMap<S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.<span class="number">0</span>.visit(visitor) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| <span class="self">self</span>.<span class="number">0</span>.get(key) |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.<span class="number">0</span>.count() |
| } |
| } |
| |
| <span class="kw">impl</span><S> fmt::Debug <span class="kw">for </span>AsMap<S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| <span class="kw">let </span><span class="kw-2">mut </span>f = f.debug_map(); |
| <span class="self">self</span>.<span class="number">0</span>.visit(<span class="kw-2">&mut </span>f).map_err(|<span class="kw">_</span>| fmt::Error)<span class="question-mark">?</span>; |
| f.finish() |
| } |
| } |
| |
| <span class="doccomment">/// The result of calling `Source::as_list` |
| </span><span class="kw">pub struct </span>AsList<S>(S); |
| |
| <span class="doccomment">/// Visit this source as a list. |
| </span><span class="kw">pub fn </span>as_list<S>(source: S) -> AsList<S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| AsList(source) |
| } |
| |
| <span class="kw">impl</span><S> Source <span class="kw">for </span>AsList<S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.<span class="number">0</span>.visit(visitor) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| <span class="self">self</span>.<span class="number">0</span>.get(key) |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.<span class="number">0</span>.count() |
| } |
| } |
| |
| <span class="kw">impl</span><S> fmt::Debug <span class="kw">for </span>AsList<S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| <span class="kw">let </span><span class="kw-2">mut </span>f = f.debug_list(); |
| <span class="self">self</span>.<span class="number">0</span>.visit(<span class="kw-2">&mut </span>f).map_err(|<span class="kw">_</span>| fmt::Error)<span class="question-mark">?</span>; |
| f.finish() |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"kv_unstable_sval"</span>)] |
| </span><span class="kw">mod </span>sval_support { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">impl</span><S> <span class="self">self</span>::sval::Value <span class="kw">for </span>AsMap<S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| <span class="kw">fn </span>stream<<span class="lifetime">'sval</span>, SV: <span class="self">self</span>::sval::Stream<<span class="lifetime">'sval</span>> + <span class="question-mark">?</span>Sized>( |
| <span class="kw-2">&</span><span class="lifetime">'sval </span><span class="self">self</span>, |
| stream: <span class="kw-2">&mut </span>SV, |
| ) -> <span class="self">self</span>::sval::Result { |
| <span class="kw">struct </span>StreamVisitor<<span class="lifetime">'a</span>, V: <span class="question-mark">?</span>Sized>(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V); |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'kvs</span>, V: <span class="self">self</span>::sval::Stream<<span class="lifetime">'kvs</span>> + <span class="question-mark">?</span>Sized> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>StreamVisitor<<span class="lifetime">'a</span>, V> { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.<span class="number">0 |
| </span>.map_key_begin() |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to stream map key"</span>))<span class="question-mark">?</span>; |
| sval_ref::stream_ref(<span class="self">self</span>.<span class="number">0</span>, key) |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to stream map key"</span>))<span class="question-mark">?</span>; |
| <span class="self">self</span>.<span class="number">0 |
| </span>.map_key_end() |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to stream map key"</span>))<span class="question-mark">?</span>; |
| |
| <span class="self">self</span>.<span class="number">0 |
| </span>.map_value_begin() |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to stream map value"</span>))<span class="question-mark">?</span>; |
| sval_ref::stream_ref(<span class="self">self</span>.<span class="number">0</span>, value) |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to stream map value"</span>))<span class="question-mark">?</span>; |
| <span class="self">self</span>.<span class="number">0 |
| </span>.map_value_end() |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to stream map value"</span>))<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| stream |
| .map_begin(<span class="prelude-val">Some</span>(<span class="self">self</span>.count())) |
| .map_err(|<span class="kw">_</span>| <span class="self">self</span>::sval::Error::new())<span class="question-mark">?</span>; |
| |
| <span class="self">self</span>.visit(<span class="kw-2">&mut </span>StreamVisitor(stream)) |
| .map_err(|<span class="kw">_</span>| <span class="self">self</span>::sval::Error::new())<span class="question-mark">?</span>; |
| |
| stream.map_end().map_err(|<span class="kw">_</span>| <span class="self">self</span>::sval::Error::new()) |
| } |
| } |
| |
| <span class="kw">impl</span><S> <span class="self">self</span>::sval::Value <span class="kw">for </span>AsList<S> |
| <span class="kw">where |
| </span>S: Source, |
| { |
| <span class="kw">fn </span>stream<<span class="lifetime">'sval</span>, SV: <span class="self">self</span>::sval::Stream<<span class="lifetime">'sval</span>> + <span class="question-mark">?</span>Sized>( |
| <span class="kw-2">&</span><span class="lifetime">'sval </span><span class="self">self</span>, |
| stream: <span class="kw-2">&mut </span>SV, |
| ) -> <span class="self">self</span>::sval::Result { |
| <span class="kw">struct </span>StreamVisitor<<span class="lifetime">'a</span>, V: <span class="question-mark">?</span>Sized>(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V); |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'kvs</span>, V: <span class="self">self</span>::sval::Stream<<span class="lifetime">'kvs</span>> + <span class="question-mark">?</span>Sized> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>StreamVisitor<<span class="lifetime">'a</span>, V> { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.<span class="number">0 |
| </span>.seq_value_begin() |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to stream seq value"</span>))<span class="question-mark">?</span>; |
| <span class="self">self</span>::sval_ref::stream_ref(<span class="self">self</span>.<span class="number">0</span>, (key, value)) |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to stream seq value"</span>))<span class="question-mark">?</span>; |
| <span class="self">self</span>.<span class="number">0 |
| </span>.seq_value_end() |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to stream seq value"</span>))<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| stream |
| .seq_begin(<span class="prelude-val">Some</span>(<span class="self">self</span>.count())) |
| .map_err(|<span class="kw">_</span>| <span class="self">self</span>::sval::Error::new())<span class="question-mark">?</span>; |
| |
| <span class="self">self</span>.visit(<span class="kw-2">&mut </span>StreamVisitor(stream)) |
| .map_err(|<span class="kw">_</span>| <span class="self">self</span>::sval::Error::new())<span class="question-mark">?</span>; |
| |
| stream.seq_end().map_err(|<span class="kw">_</span>| <span class="self">self</span>::sval::Error::new()) |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">extern crate </span>sval_derive; |
| |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span><span class="self">self</span>::sval_derive::Value; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::kv::source; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>derive_stream() { |
| <span class="attribute">#[derive(Value)] |
| </span><span class="kw">pub struct </span>MyRecordAsMap<<span class="lifetime">'a</span>> { |
| msg: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| kvs: source::AsMap<<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw">dyn </span>Source>, |
| } |
| |
| <span class="attribute">#[derive(Value)] |
| </span><span class="kw">pub struct </span>MyRecordAsList<<span class="lifetime">'a</span>> { |
| msg: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| kvs: source::AsList<<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw">dyn </span>Source>, |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"kv_unstable_serde"</span>)] |
| </span><span class="kw">pub mod </span>as_map { |
| <span class="doccomment">//! `serde` adapters for serializing a `Source` as a map. |
| |
| </span><span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span><span class="self">self</span>::serde::{Serialize, Serializer}; |
| |
| <span class="doccomment">/// Serialize a `Source` as a map. |
| </span><span class="kw">pub fn </span>serialize<T, S>(source: <span class="kw-2">&</span>T, serializer: S) -> <span class="prelude-ty">Result</span><S::Ok, S::Error> |
| <span class="kw">where |
| </span>T: Source, |
| S: Serializer, |
| { |
| as_map(source).serialize(serializer) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"kv_unstable_serde"</span>)] |
| </span><span class="kw">pub mod </span>as_list { |
| <span class="doccomment">//! `serde` adapters for serializing a `Source` as a list. |
| |
| </span><span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span><span class="self">self</span>::serde::{Serialize, Serializer}; |
| |
| <span class="doccomment">/// Serialize a `Source` as a list. |
| </span><span class="kw">pub fn </span>serialize<T, S>(source: <span class="kw-2">&</span>T, serializer: S) -> <span class="prelude-ty">Result</span><S::Ok, S::Error> |
| <span class="kw">where |
| </span>T: Source, |
| S: Serializer, |
| { |
| as_list(source).serialize(serializer) |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"kv_unstable_serde"</span>)] |
| </span><span class="kw">mod </span>serde_support { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span><span class="self">self</span>::serde::ser::{Error <span class="kw">as </span>SerError, Serialize, SerializeMap, SerializeSeq, Serializer}; |
| |
| <span class="kw">impl</span><T> Serialize <span class="kw">for </span>AsMap<T> |
| <span class="kw">where |
| </span>T: Source, |
| { |
| <span class="kw">fn </span>serialize<S>(<span class="kw-2">&</span><span class="self">self</span>, serializer: S) -> <span class="prelude-ty">Result</span><S::Ok, S::Error> |
| <span class="kw">where |
| </span>S: Serializer, |
| { |
| <span class="kw">struct </span>SerializerVisitor<<span class="lifetime">'a</span>, S>(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>S); |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'kvs</span>, S> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>SerializerVisitor<<span class="lifetime">'a</span>, S> |
| <span class="kw">where |
| </span>S: SerializeMap, |
| { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.<span class="number">0 |
| </span>.serialize_entry(<span class="kw-2">&</span>key, <span class="kw-2">&</span>value) |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to serialize map entry"</span>))<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>map = serializer.serialize_map(<span class="prelude-val">Some</span>(<span class="self">self</span>.count()))<span class="question-mark">?</span>; |
| |
| <span class="self">self</span>.visit(<span class="kw-2">&mut </span>SerializerVisitor(<span class="kw-2">&mut </span>map)) |
| .map_err(|<span class="kw">_</span>| S::Error::custom(<span class="string">"failed to visit key-values"</span>))<span class="question-mark">?</span>; |
| |
| map.end() |
| } |
| } |
| |
| <span class="kw">impl</span><T> Serialize <span class="kw">for </span>AsList<T> |
| <span class="kw">where |
| </span>T: Source, |
| { |
| <span class="kw">fn </span>serialize<S>(<span class="kw-2">&</span><span class="self">self</span>, serializer: S) -> <span class="prelude-ty">Result</span><S::Ok, S::Error> |
| <span class="kw">where |
| </span>S: Serializer, |
| { |
| <span class="kw">struct </span>SerializerVisitor<<span class="lifetime">'a</span>, S>(<span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>S); |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, <span class="lifetime">'kvs</span>, S> Visitor<<span class="lifetime">'kvs</span>> <span class="kw">for </span>SerializerVisitor<<span class="lifetime">'a</span>, S> |
| <span class="kw">where |
| </span>S: SerializeSeq, |
| { |
| <span class="kw">fn </span>visit_pair(<span class="kw-2">&mut </span><span class="self">self</span>, key: Key<<span class="lifetime">'kvs</span>>, value: Value<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| <span class="self">self</span>.<span class="number">0 |
| </span>.serialize_element(<span class="kw-2">&</span>(key, value)) |
| .map_err(|<span class="kw">_</span>| Error::msg(<span class="string">"failed to serialize seq entry"</span>))<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>seq = serializer.serialize_seq(<span class="prelude-val">Some</span>(<span class="self">self</span>.count()))<span class="question-mark">?</span>; |
| |
| <span class="self">self</span>.visit(<span class="kw-2">&mut </span>SerializerVisitor(<span class="kw-2">&mut </span>seq)) |
| .map_err(|<span class="kw">_</span>| S::Error::custom(<span class="string">"failed to visit seq"</span>))<span class="question-mark">?</span>; |
| |
| seq.end() |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span><span class="self">self</span>::serde::Serialize; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::kv::source; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>derive_serialize() { |
| <span class="attribute">#[derive(Serialize)] |
| </span><span class="kw">pub struct </span>MyRecordAsMap<<span class="lifetime">'a</span>> { |
| msg: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| <span class="attribute">#[serde(flatten)] |
| #[serde(with = <span class="string">"source::as_map"</span>)] |
| </span>kvs: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw">dyn </span>Source, |
| } |
| |
| <span class="attribute">#[derive(Serialize)] |
| </span><span class="kw">pub struct </span>MyRecordAsList<<span class="lifetime">'a</span>> { |
| msg: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| <span class="attribute">#[serde(flatten)] |
| #[serde(with = <span class="string">"source::as_list"</span>)] |
| </span>kvs: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw">dyn </span>Source, |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span>kv::value::tests::Token; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>source_is_object_safe() { |
| <span class="kw">fn </span>_check(<span class="kw">_</span>: <span class="kw-2">&</span><span class="kw">dyn </span>Source) {} |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>visitor_is_object_safe() { |
| <span class="kw">fn </span>_check(<span class="kw">_</span>: <span class="kw-2">&</span><span class="kw">dyn </span>Visitor) {} |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>count() { |
| <span class="kw">struct </span>OnePair { |
| key: <span class="kw-2">&</span><span class="lifetime">'static </span>str, |
| value: i32, |
| } |
| |
| <span class="kw">impl </span>Source <span class="kw">for </span>OnePair { |
| <span class="kw">fn </span>visit<<span class="lifetime">'kvs</span>>(<span class="kw-2">&</span><span class="lifetime">'kvs </span><span class="self">self</span>, visitor: <span class="kw-2">&mut </span><span class="kw">dyn </span>Visitor<<span class="lifetime">'kvs</span>>) -> <span class="prelude-ty">Result</span><(), Error> { |
| visitor.visit_pair(<span class="self">self</span>.key.to_key(), <span class="self">self</span>.value.to_value()) |
| } |
| |
| <span class="kw">fn </span>get<<span class="lifetime">'v</span>>(<span class="kw-2">&</span><span class="lifetime">'v </span><span class="self">self</span>, key: Key) -> <span class="prelude-ty">Option</span><Value<<span class="lifetime">'v</span>>> { |
| get_default(<span class="self">self</span>, key) |
| } |
| |
| <span class="kw">fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| count_default(<span class="self">self</span>) |
| } |
| } |
| |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, Source::count(<span class="kw-2">&</span>(<span class="string">"a"</span>, <span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, Source::count(<span class="kw-2">&</span>[(<span class="string">"a"</span>, <span class="number">1</span>), (<span class="string">"b"</span>, <span class="number">2</span>)] <span class="kw">as </span><span class="kw-2">&</span>[<span class="kw">_</span>])); |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, Source::count(<span class="kw-2">&</span>Option::None::<(<span class="kw-2">&</span>str, i32)>)); |
| <span class="macro">assert_eq!</span>(<span class="number">1</span>, Source::count(<span class="kw-2">&</span>OnePair { key: <span class="string">"a"</span>, value: <span class="number">1 </span>})); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>get() { |
| <span class="kw">let </span>source = <span class="kw-2">&</span>[(<span class="string">"a"</span>, <span class="number">1</span>), (<span class="string">"b"</span>, <span class="number">2</span>), (<span class="string">"a"</span>, <span class="number">1</span>)] <span class="kw">as </span><span class="kw-2">&</span>[<span class="kw">_</span>]; |
| <span class="macro">assert_eq!</span>( |
| Token::I64(<span class="number">1</span>), |
| Source::get(source, Key::from_str(<span class="string">"a"</span>)).unwrap().to_token() |
| ); |
| <span class="macro">assert_eq!</span>( |
| Token::I64(<span class="number">2</span>), |
| Source::get(source, Key::from_str(<span class="string">"b"</span>)).unwrap().to_token() |
| ); |
| <span class="macro">assert!</span>(Source::get(<span class="kw-2">&</span>source, Key::from_str(<span class="string">"c"</span>)).is_none()); |
| |
| <span class="kw">let </span>source = Option::None::<(<span class="kw-2">&</span>str, i32)>; |
| <span class="macro">assert!</span>(Source::get(<span class="kw-2">&</span>source, Key::from_str(<span class="string">"a"</span>)).is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>as_map() { |
| <span class="kw">let _ </span>= <span class="kw">crate</span>::kv::source::as_map((<span class="string">"a"</span>, <span class="number">1</span>)); |
| <span class="kw">let _ </span>= <span class="kw">crate</span>::kv::source::as_map(<span class="kw-2">&</span>(<span class="string">"a"</span>, <span class="number">1</span>) <span class="kw">as </span><span class="kw-2">&</span><span class="kw">dyn </span>Source); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>as_list() { |
| <span class="kw">let _ </span>= <span class="kw">crate</span>::kv::source::as_list((<span class="string">"a"</span>, <span class="number">1</span>)); |
| <span class="kw">let _ </span>= <span class="kw">crate</span>::kv::source::as_list(<span class="kw-2">&</span>(<span class="string">"a"</span>, <span class="number">1</span>) <span class="kw">as </span><span class="kw-2">&</span><span class="kw">dyn </span>Source); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="log" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |