| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.96/src/value/from.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>from.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../serde_json/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../serde_json/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">super</span>::Value; |
| <span class="kw">use </span><span class="kw">crate</span>::map::Map; |
| <span class="kw">use </span><span class="kw">crate</span>::number::Number; |
| <span class="kw">use </span>alloc::borrow::Cow; |
| <span class="kw">use </span>alloc::string::{String, ToString}; |
| <span class="kw">use </span>alloc::vec::Vec; |
| <span class="kw">use </span>core::iter::FromIterator; |
| |
| <span class="macro">macro_rules! </span>from_integer { |
| ($(<span class="macro-nonterminal">$ty</span>:ident)<span class="kw-2">*</span>) => { |
| $( |
| <span class="kw">impl </span>From<<span class="macro-nonterminal">$ty</span>> <span class="kw">for </span>Value { |
| <span class="kw">fn </span>from(n: <span class="macro-nonterminal">$ty</span>) -> <span class="self">Self </span>{ |
| Value::Number(n.into()) |
| } |
| } |
| )* |
| }; |
| } |
| |
| <span class="macro">from_integer! </span>{ |
| i8 i16 i32 i64 isize |
| u8 u16 u32 u64 usize |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"arbitrary_precision"</span>)] |
| </span><span class="macro">from_integer! </span>{ |
| i128 u128 |
| } |
| |
| <span class="kw">impl </span>From<f32> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert 32-bit floating point number to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let f: f32 = 13.37; |
| /// let x: Value = f.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: f32) -> <span class="self">Self </span>{ |
| Number::from_f32(f).map_or(Value::Null, Value::Number) |
| } |
| } |
| |
| <span class="kw">impl </span>From<f64> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert 64-bit floating point number to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let f: f64 = 13.37; |
| /// let x: Value = f.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: f64) -> <span class="self">Self </span>{ |
| Number::from_f64(f).map_or(Value::Null, Value::Number) |
| } |
| } |
| |
| <span class="kw">impl </span>From<bool> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert boolean to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let b = false; |
| /// let x: Value = b.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: bool) -> <span class="self">Self </span>{ |
| Value::Bool(f) |
| } |
| } |
| |
| <span class="kw">impl </span>From<String> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert `String` to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let s: String = "lorem".to_string(); |
| /// let x: Value = s.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: String) -> <span class="self">Self </span>{ |
| Value::String(f) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> From<<span class="kw-2">&</span><span class="lifetime">'a </span>str> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert string slice to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let s: &str = "lorem"; |
| /// let x: Value = s.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: <span class="kw-2">&</span>str) -> <span class="self">Self </span>{ |
| Value::String(f.to_string()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> From<Cow<<span class="lifetime">'a</span>, str>> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert copy-on-write string to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// use std::borrow::Cow; |
| /// |
| /// let s: Cow<str> = Cow::Borrowed("lorem"); |
| /// let x: Value = s.into(); |
| /// ``` |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// use std::borrow::Cow; |
| /// |
| /// let s: Cow<str> = Cow::Owned("lorem".to_string()); |
| /// let x: Value = s.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: Cow<<span class="lifetime">'a</span>, str>) -> <span class="self">Self </span>{ |
| Value::String(f.into_owned()) |
| } |
| } |
| |
| <span class="kw">impl </span>From<Number> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert `Number` to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::{Number, Value}; |
| /// |
| /// let n = Number::from(7); |
| /// let x: Value = n.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: Number) -> <span class="self">Self </span>{ |
| Value::Number(f) |
| } |
| } |
| |
| <span class="kw">impl </span>From<Map<String, Value>> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert map (with string keys) to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::{Map, Value}; |
| /// |
| /// let mut m = Map::new(); |
| /// m.insert("Lorem".to_string(), "ipsum".into()); |
| /// let x: Value = m.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: Map<String, Value>) -> <span class="self">Self </span>{ |
| Value::Object(f) |
| } |
| } |
| |
| <span class="kw">impl</span><T: Into<Value>> From<Vec<T>> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert a `Vec` to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let v = vec!["lorem", "ipsum", "dolor"]; |
| /// let x: Value = v.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: Vec<T>) -> <span class="self">Self </span>{ |
| Value::Array(f.into_iter().map(Into::into).collect()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, T: Clone + Into<Value>> From<<span class="kw-2">&</span><span class="lifetime">'a </span>[T]> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert a slice to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let v: &[&str] = &["lorem", "ipsum", "dolor"]; |
| /// let x: Value = v.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from(f: <span class="kw-2">&</span><span class="lifetime">'a </span>[T]) -> <span class="self">Self </span>{ |
| Value::Array(f.iter().cloned().map(Into::into).collect()) |
| } |
| } |
| |
| <span class="kw">impl</span><T: Into<Value>> FromIterator<T> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert an iteratable type to a `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let v = std::iter::repeat(42).take(5); |
| /// let x: Value = v.collect(); |
| /// ``` |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let v: Vec<_> = vec!["lorem", "ipsum", "dolor"]; |
| /// let x: Value = v.into_iter().collect(); |
| /// ``` |
| /// |
| /// ``` |
| /// use std::iter::FromIterator; |
| /// use serde_json::Value; |
| /// |
| /// let x: Value = Value::from_iter(vec!["lorem", "ipsum", "dolor"]); |
| /// ``` |
| </span><span class="kw">fn </span>from_iter<I: IntoIterator<Item = T>>(iter: I) -> <span class="self">Self </span>{ |
| Value::Array(iter.into_iter().map(Into::into).collect()) |
| } |
| } |
| |
| <span class="kw">impl</span><K: Into<String>, V: Into<Value>> FromIterator<(K, V)> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert an iteratable type to a `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let v: Vec<_> = vec![("lorem", 40), ("ipsum", 2)]; |
| /// let x: Value = v.into_iter().collect(); |
| /// ``` |
| </span><span class="kw">fn </span>from_iter<I: IntoIterator<Item = (K, V)>>(iter: I) -> <span class="self">Self </span>{ |
| Value::Object( |
| iter.into_iter() |
| .map(|(k, v)| (k.into(), v.into())) |
| .collect(), |
| ) |
| } |
| } |
| |
| <span class="kw">impl </span>From<()> <span class="kw">for </span>Value { |
| <span class="doccomment">/// Convert `()` to `Value` |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use serde_json::Value; |
| /// |
| /// let u = (); |
| /// let x: Value = u.into(); |
| /// ``` |
| </span><span class="kw">fn </span>from((): ()) -> <span class="self">Self </span>{ |
| Value::Null |
| } |
| } |
| |
| <span class="kw">impl</span><T> From<<span class="prelude-ty">Option</span><T>> <span class="kw">for </span>Value |
| <span class="kw">where |
| </span>T: Into<Value>, |
| { |
| <span class="kw">fn </span>from(opt: <span class="prelude-ty">Option</span><T>) -> <span class="self">Self </span>{ |
| <span class="kw">match </span>opt { |
| <span class="prelude-val">None </span>=> Value::Null, |
| <span class="prelude-val">Some</span>(value) => Into::into(value), |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="serde_json" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
