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<!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="API documentation for the Rust `Encoder` trait in crate `rustc_serialize`."><meta name="keywords" content="rust, rustlang, rust-lang, Encoder"><title>rustc_serialize::Encoder - Rust</title><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../dark.css"><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script src="../storage.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="shortcut icon" href="https://www.rust-lang.org/favicon.ico"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc trait"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../rustc_serialize/index.html'><div class='logo-container'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo'></div></a><p class='location'>Trait Encoder</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#associated-types">Associated Types</a><div class="sidebar-links"><a href="#associatedtype.Error">Error</a></div><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.emit_bool">emit_bool</a><a href="#tymethod.emit_char">emit_char</a><a href="#tymethod.emit_enum">emit_enum</a><a href="#tymethod.emit_enum_struct_variant">emit_enum_struct_variant</a><a href="#tymethod.emit_enum_struct_variant_field">emit_enum_struct_variant_field</a><a href="#tymethod.emit_enum_variant">emit_enum_variant</a><a href="#tymethod.emit_enum_variant_arg">emit_enum_variant_arg</a><a href="#tymethod.emit_f32">emit_f32</a><a href="#tymethod.emit_f64">emit_f64</a><a href="#tymethod.emit_i16">emit_i16</a><a href="#tymethod.emit_i32">emit_i32</a><a href="#tymethod.emit_i64">emit_i64</a><a href="#tymethod.emit_i8">emit_i8</a><a href="#tymethod.emit_isize">emit_isize</a><a href="#tymethod.emit_map">emit_map</a><a href="#tymethod.emit_map_elt_key">emit_map_elt_key</a><a href="#tymethod.emit_map_elt_val">emit_map_elt_val</a><a href="#tymethod.emit_nil">emit_nil</a><a href="#tymethod.emit_option">emit_option</a><a href="#tymethod.emit_option_none">emit_option_none</a><a href="#tymethod.emit_option_some">emit_option_some</a><a href="#tymethod.emit_seq">emit_seq</a><a href="#tymethod.emit_seq_elt">emit_seq_elt</a><a href="#tymethod.emit_str">emit_str</a><a href="#tymethod.emit_struct">emit_struct</a><a href="#tymethod.emit_struct_field">emit_struct_field</a><a href="#tymethod.emit_tuple">emit_tuple</a><a href="#tymethod.emit_tuple_arg">emit_tuple_arg</a><a href="#tymethod.emit_tuple_struct">emit_tuple_struct</a><a href="#tymethod.emit_tuple_struct_arg">emit_tuple_struct_arg</a><a href="#tymethod.emit_u16">emit_u16</a><a href="#tymethod.emit_u32">emit_u32</a><a href="#tymethod.emit_u64">emit_u64</a><a href="#tymethod.emit_u8">emit_u8</a><a href="#tymethod.emit_usize">emit_usize</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='index.html'>rustc_serialize</a></p><script>window.sidebarCurrent = {name: 'Encoder', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../settings.html"><img src="../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../src/rustc_serialize/serialize.rs.html#47-489' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='index.html'>rustc_serialize</a>::<wbr><a class="trait" href=''>Encoder</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'>pub trait Encoder {
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type <a href='#associatedtype.Error' class="type">Error</a>;
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fn <a href='#tymethod.emit_nil' class='fnname'>emit_nil</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_usize' class='fnname'>emit_usize</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_u64' class='fnname'>emit_u64</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_u32' class='fnname'>emit_u32</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_u16' class='fnname'>emit_u16</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_u8' class='fnname'>emit_u8</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_isize' class='fnname'>emit_isize</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_i64' class='fnname'>emit_i64</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_i32' class='fnname'>emit_i32</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_i16' class='fnname'>emit_i16</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_i8' class='fnname'>emit_i8</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_bool' class='fnname'>emit_bool</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_f64' class='fnname'>emit_f64</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_f32' class='fnname'>emit_f32</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_char' class='fnname'>emit_char</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.char.html">char</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_str' class='fnname'>emit_str</a>(&mut self, v: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_enum' class='fnname'>emit_enum</a><F>(&mut self, name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_enum_variant' class='fnname'>emit_enum_variant</a><F>(<br> &mut self, <br> v_name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> v_id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_enum_variant_arg' class='fnname'>emit_enum_variant_arg</a><F>(<br> &mut self, <br> a_idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_enum_struct_variant' class='fnname'>emit_enum_struct_variant</a><F>(<br> &mut self, <br> v_name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> v_id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_enum_struct_variant_field' class='fnname'>emit_enum_struct_variant_field</a><F>(<br> &mut self, <br> f_name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> f_idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_struct' class='fnname'>emit_struct</a><F>(<br> &mut self, <br> name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_struct_field' class='fnname'>emit_struct_field</a><F>(<br> &mut self, <br> f_name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> f_idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_tuple' class='fnname'>emit_tuple</a><F>(&mut self, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_tuple_arg' class='fnname'>emit_tuple_arg</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_tuple_struct' class='fnname'>emit_tuple_struct</a><F>(<br> &mut self, <br> name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_tuple_struct_arg' class='fnname'>emit_tuple_struct_arg</a><F>(<br> &mut self, <br> f_idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_option' class='fnname'>emit_option</a><F>(&mut self, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_option_none' class='fnname'>emit_option_none</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_option_some' class='fnname'>emit_option_some</a><F>(&mut self, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_seq' class='fnname'>emit_seq</a><F>(&mut self, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_seq_elt' class='fnname'>emit_seq_elt</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_map' class='fnname'>emit_map</a><F>(&mut self, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_map_elt_key' class='fnname'>emit_map_elt_key</a><F>(<br> &mut self, <br> idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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<div class='item-spacer'></div> fn <a href='#tymethod.emit_map_elt_val' class='fnname'>emit_map_elt_val</a><F>(<br> &mut self, <br> idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br> ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></span>;
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}</pre></div><div class='docblock'><p>Trait for writing out an encoding when serializing.</p>
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<p>This trait provides methods to encode basic types and generic forms of
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collections. Implementations of <code>Encodable</code> use it to perform the actual
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encoding of a type.</p>
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<p>It is unspecified what is done with the encoding - it could be stored in a
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variable, or written directly to a file, for example.</p>
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<p>Encoders can expect to only have a single "root" method call made on this
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trait. Non-trivial types will call one of the collection-emitting methods,
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passing a function that may call other methods on the trait, but once the
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collection-emitting method has returned, encoding should be complete.</p>
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</div>
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<h2 id='associated-types' class='small-section-header'>Associated Types<a href='#associated-types' class='anchor'></a></h2><div class='methods'><h3 id='associatedtype.Error' class='method'><code id='Error.t'>type <a href='#associatedtype.Error' class="type">Error</a></code></h3><div class='docblock'><p>The error type for method results.</p>
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</div></div><span class='loading-content'>Loading content...</span>
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<h2 id='required-methods' class='small-section-header'>Required methods<a href='#required-methods' class='anchor'></a></h2><div class='methods'><h3 id='tymethod.emit_nil' class='method'><code id='emit_nil.v'>fn <a href='#tymethod.emit_nil' class='fnname'>emit_nil</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a nil value.</p>
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<p>For example, this might be stored as the null keyword in JSON.</p>
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</div><h3 id='tymethod.emit_usize' class='method'><code id='emit_usize.v'>fn <a href='#tymethod.emit_usize' class='fnname'>emit_usize</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a usize value.</p>
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</div><h3 id='tymethod.emit_u64' class='method'><code id='emit_u64.v'>fn <a href='#tymethod.emit_u64' class='fnname'>emit_u64</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a u64 value.</p>
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</div><h3 id='tymethod.emit_u32' class='method'><code id='emit_u32.v'>fn <a href='#tymethod.emit_u32' class='fnname'>emit_u32</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a u32 value.</p>
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</div><h3 id='tymethod.emit_u16' class='method'><code id='emit_u16.v'>fn <a href='#tymethod.emit_u16' class='fnname'>emit_u16</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a u16 value.</p>
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</div><h3 id='tymethod.emit_u8' class='method'><code id='emit_u8.v'>fn <a href='#tymethod.emit_u8' class='fnname'>emit_u8</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a u8 value.</p>
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</div><h3 id='tymethod.emit_isize' class='method'><code id='emit_isize.v'>fn <a href='#tymethod.emit_isize' class='fnname'>emit_isize</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a isize value.</p>
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</div><h3 id='tymethod.emit_i64' class='method'><code id='emit_i64.v'>fn <a href='#tymethod.emit_i64' class='fnname'>emit_i64</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a i64 value.</p>
|
|
|
</div><h3 id='tymethod.emit_i32' class='method'><code id='emit_i32.v'>fn <a href='#tymethod.emit_i32' class='fnname'>emit_i32</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a i32 value.</p>
|
|
|
</div><h3 id='tymethod.emit_i16' class='method'><code id='emit_i16.v'>fn <a href='#tymethod.emit_i16' class='fnname'>emit_i16</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a i16 value.</p>
|
|
|
</div><h3 id='tymethod.emit_i8' class='method'><code id='emit_i8.v'>fn <a href='#tymethod.emit_i8' class='fnname'>emit_i8</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a i8 value.</p>
|
|
|
</div><h3 id='tymethod.emit_bool' class='method'><code id='emit_bool.v'>fn <a href='#tymethod.emit_bool' class='fnname'>emit_bool</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a bool value.</p>
|
|
|
<p>For example, this might be stored as the true and false keywords in
|
|
|
JSON.</p>
|
|
|
</div><h3 id='tymethod.emit_f64' class='method'><code id='emit_f64.v'>fn <a href='#tymethod.emit_f64' class='fnname'>emit_f64</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a f64 value.</p>
|
|
|
</div><h3 id='tymethod.emit_f32' class='method'><code id='emit_f32.v'>fn <a href='#tymethod.emit_f32' class='fnname'>emit_f32</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a f32 value.</p>
|
|
|
</div><h3 id='tymethod.emit_char' class='method'><code id='emit_char.v'>fn <a href='#tymethod.emit_char' class='fnname'>emit_char</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.char.html">char</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a char value.</p>
|
|
|
<p>Note that strings should be emitted using <code>emit_str</code>, not as a sequence
|
|
|
of <code>emit_char</code> calls.</p>
|
|
|
</div><h3 id='tymethod.emit_str' class='method'><code id='emit_str.v'>fn <a href='#tymethod.emit_str' class='fnname'>emit_str</a>(&mut self, v: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit a string value.</p>
|
|
|
</div><h3 id='tymethod.emit_enum' class='method'><code id='emit_enum.v'>fn <a href='#tymethod.emit_enum' class='fnname'>emit_enum</a><F>(&mut self, name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit an enumeration value.</p>
|
|
|
<ul>
|
|
|
<li><code>name</code> indicates the enumeration type name.</li>
|
|
|
<li><code>f</code> is a function that will call <code>emit_enum_variant</code> or
|
|
|
<code>emit_enum_struct_variant</code> as appropriate to write the actual value.</li>
|
|
|
</ul>
|
|
|
</div><h3 id='tymethod.emit_enum_variant' class='method'><code id='emit_enum_variant.v'>fn <a href='#tymethod.emit_enum_variant' class='fnname'>emit_enum_variant</a><F>(<br> &mut self, <br> v_name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> v_id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a enumeration variant value with no or unnamed data.</p>
|
|
|
<p>This should only be called from a function passed to <code>emit_enum</code>.
|
|
|
Variants with named data should use <code>emit_enum_struct_variant</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>v_name</code> is the variant name</li>
|
|
|
<li><code>v_id</code> is the numeric identifier for the variant.</li>
|
|
|
<li><code>len</code> is the number of data items associated with the variant.</li>
|
|
|
<li><code>f</code> is a function that will call <code>emit_enum_variant_arg</code> for each data
|
|
|
item. It may not be called if len is 0.</li>
|
|
|
</ul>
|
|
|
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
|
|
|
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encodable</span>;
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encoder</span>;
|
|
|
|
|
|
<span class="kw">enum</span> <span class="ident">Message</span> {
|
|
|
<span class="ident">Quit</span>,
|
|
|
<span class="ident">ChangeColor</span>(<span class="ident">i32</span>, <span class="ident">i32</span>, <span class="ident">i32</span>),
|
|
|
}
|
|
|
|
|
|
<span class="kw">impl</span> <span class="ident">Encodable</span> <span class="kw">for</span> <span class="ident">Message</span> {
|
|
|
<span class="kw">fn</span> <span class="ident">encode</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Encoder</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">s</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">S</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">S</span>::<span class="ident">Error</span><span class="op">></span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_enum</span>(<span class="string">"Message"</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
|
|
|
<span class="ident">Message</span>::<span class="ident">Quit</span> <span class="op">=</span><span class="op">></span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_enum_variant</span>(<span class="string">"Quit"</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="prelude-val">Ok</span>(()))
|
|
|
}
|
|
|
<span class="ident">Message</span>::<span class="ident">ChangeColor</span>(<span class="ident">r</span>, <span class="ident">g</span>, <span class="ident">b</span>) <span class="op">=</span><span class="op">></span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_enum_variant</span>(<span class="string">"ChangeColor"</span>, <span class="number">1</span>, <span class="number">3</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_enum_variant_arg</span>(<span class="number">0</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_i32</span>(<span class="ident">r</span>)
|
|
|
}));
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_enum_variant_arg</span>(<span class="number">1</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_i32</span>(<span class="ident">g</span>)
|
|
|
}));
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_enum_variant_arg</span>(<span class="number">2</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_i32</span>(<span class="ident">b</span>)
|
|
|
}));
|
|
|
<span class="prelude-val">Ok</span>(())
|
|
|
})
|
|
|
}
|
|
|
}
|
|
|
})
|
|
|
}
|
|
|
}</pre></div>
|
|
|
</div><h3 id='tymethod.emit_enum_variant_arg' class='method'><code id='emit_enum_variant_arg.v'>fn <a href='#tymethod.emit_enum_variant_arg' class='fnname'>emit_enum_variant_arg</a><F>(<br> &mut self, <br> a_idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit an unnamed data item for an enumeration variant.</p>
|
|
|
<p>This should only be called from a function passed to
|
|
|
<code>emit_enum_variant</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>a_idx</code> is the (zero-based) index of the data item.</li>
|
|
|
<li><code>f</code> is a function that will call the appropriate emit method to encode
|
|
|
the data object.</li>
|
|
|
</ul>
|
|
|
<p>Note that variant data items must be emitted in order - starting with
|
|
|
index <code>0</code> and finishing with index <code>len-1</code>.</p>
|
|
|
</div><h3 id='tymethod.emit_enum_struct_variant' class='method'><code id='emit_enum_struct_variant.v'>fn <a href='#tymethod.emit_enum_struct_variant' class='fnname'>emit_enum_struct_variant</a><F>(<br> &mut self, <br> v_name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> v_id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a enumeration variant value with no or named data.</p>
|
|
|
<p>This should only be called from a function passed to <code>emit_enum</code>.
|
|
|
Variants with unnamed data should use <code>emit_enum_variant</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>v_name</code> is the variant name.</li>
|
|
|
<li><code>v_id</code> is the numeric identifier for the variant.</li>
|
|
|
<li><code>len</code> is the number of data items associated with the variant.</li>
|
|
|
<li><code>f</code> is a function that will call <code>emit_enum_struct_variant_field</code> for
|
|
|
each data item. It may not be called if <code>len</code> is <code>0</code>.</li>
|
|
|
</ul>
|
|
|
<h1 id="examples-1" class="section-header"><a href="#examples-1">Examples</a></h1>
|
|
|
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encodable</span>;
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encoder</span>;
|
|
|
|
|
|
<span class="kw">enum</span> <span class="ident">Message</span> {
|
|
|
<span class="ident">Quit</span>,
|
|
|
<span class="ident">Move</span> { <span class="ident">x</span>: <span class="ident">i32</span>, <span class="ident">y</span>: <span class="ident">i32</span> },
|
|
|
}
|
|
|
|
|
|
<span class="kw">impl</span> <span class="ident">Encodable</span> <span class="kw">for</span> <span class="ident">Message</span> {
|
|
|
<span class="kw">fn</span> <span class="ident">encode</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Encoder</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">s</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">S</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">S</span>::<span class="ident">Error</span><span class="op">></span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_enum</span>(<span class="string">"Message"</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
|
|
|
<span class="ident">Message</span>::<span class="ident">Quit</span> <span class="op">=</span><span class="op">></span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_enum_struct_variant</span>(<span class="string">"Quit"</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="prelude-val">Ok</span>(()))
|
|
|
}
|
|
|
<span class="ident">Message</span>::<span class="ident">Move</span> { <span class="ident">x</span>: <span class="ident">x</span>, <span class="ident">y</span>: <span class="ident">y</span> } <span class="op">=</span><span class="op">></span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_enum_struct_variant</span>(<span class="string">"Move"</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_enum_struct_variant_field</span>(<span class="string">"x"</span>, <span class="number">0</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_i32</span>(<span class="ident">x</span>)
|
|
|
}));
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_enum_struct_variant_field</span>(<span class="string">"y"</span>, <span class="number">1</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_i32</span>(<span class="ident">y</span>)
|
|
|
}));
|
|
|
<span class="prelude-val">Ok</span>(())
|
|
|
})
|
|
|
}
|
|
|
}
|
|
|
})
|
|
|
}
|
|
|
}</pre></div>
|
|
|
</div><h3 id='tymethod.emit_enum_struct_variant_field' class='method'><code id='emit_enum_struct_variant_field.v'>fn <a href='#tymethod.emit_enum_struct_variant_field' class='fnname'>emit_enum_struct_variant_field</a><F>(<br> &mut self, <br> f_name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> f_idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a named data item for an enumeration variant.</p>
|
|
|
<p>This should only be called from a function passed to
|
|
|
<code>emit_enum_struct_variant</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>f_name</code> is the name of the data item field.</li>
|
|
|
<li><code>f_idx</code> is its (zero-based) index.</li>
|
|
|
<li><code>f</code> is a function that will call the appropriate emit method to encode
|
|
|
the data object.</li>
|
|
|
</ul>
|
|
|
<p>Note that fields must be emitted in order - starting with index <code>0</code> and
|
|
|
finishing with index <code>len-1</code>.</p>
|
|
|
</div><h3 id='tymethod.emit_struct' class='method'><code id='emit_struct.v'>fn <a href='#tymethod.emit_struct' class='fnname'>emit_struct</a><F>(<br> &mut self, <br> name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a struct value.</p>
|
|
|
<ul>
|
|
|
<li><code>name</code> is the name of the struct.</li>
|
|
|
<li><code>len</code> is the number of members.</li>
|
|
|
<li><code>f</code> is a function that calls <code>emit_struct_field</code> for each member.</li>
|
|
|
</ul>
|
|
|
<h1 id="examples-2" class="section-header"><a href="#examples-2">Examples</a></h1>
|
|
|
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encodable</span>;
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encoder</span>;
|
|
|
|
|
|
<span class="kw">struct</span> <span class="ident">Point</span> {
|
|
|
<span class="ident">x</span>: <span class="ident">i32</span>,
|
|
|
<span class="ident">y</span>: <span class="ident">i32</span>,
|
|
|
}
|
|
|
|
|
|
<span class="kw">impl</span> <span class="ident">Encodable</span> <span class="kw">for</span> <span class="ident">Point</span> {
|
|
|
<span class="kw">fn</span> <span class="ident">encode</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Encoder</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">s</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">S</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">S</span>::<span class="ident">Error</span><span class="op">></span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_struct</span>(<span class="string">"Point"</span>, <span class="number">2</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_struct_field</span>(<span class="string">"x"</span>, <span class="number">0</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_i32</span>(<span class="self">self</span>.<span class="ident">x</span>)
|
|
|
}));
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_struct_field</span>(<span class="string">"y"</span>, <span class="number">1</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_i32</span>(<span class="self">self</span>.<span class="ident">y</span>)
|
|
|
}));
|
|
|
<span class="prelude-val">Ok</span>(())
|
|
|
})
|
|
|
}
|
|
|
}</pre></div>
|
|
|
</div><h3 id='tymethod.emit_struct_field' class='method'><code id='emit_struct_field.v'>fn <a href='#tymethod.emit_struct_field' class='fnname'>emit_struct_field</a><F>(<br> &mut self, <br> f_name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> f_idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a field item for a struct.</p>
|
|
|
<p>This should only be called from a function passed to <code>emit_struct</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>f_name</code> is the name of the data item field.</li>
|
|
|
<li><code>f_idx</code> is its (zero-based) index.</li>
|
|
|
<li><code>f</code> is a function that will call the appropriate emit method to encode
|
|
|
the data object.</li>
|
|
|
</ul>
|
|
|
<p>Note that fields must be emitted in order - starting with index <code>0</code> and
|
|
|
finishing with index <code>len-1</code>.</p>
|
|
|
</div><h3 id='tymethod.emit_tuple' class='method'><code id='emit_tuple.v'>fn <a href='#tymethod.emit_tuple' class='fnname'>emit_tuple</a><F>(&mut self, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a tuple value.</p>
|
|
|
<ul>
|
|
|
<li><code>len</code> is the number of items in the tuple.</li>
|
|
|
<li><code>f</code> is a function that calls <code>emit_tuple_arg</code> for each member.</li>
|
|
|
</ul>
|
|
|
<p>Note that external <code>Encodable</code> implementations should not normally need
|
|
|
to use this method directly; it is meant for the use of this module's
|
|
|
own implementation of <code>Encodable</code> for tuples.</p>
|
|
|
</div><h3 id='tymethod.emit_tuple_arg' class='method'><code id='emit_tuple_arg.v'>fn <a href='#tymethod.emit_tuple_arg' class='fnname'>emit_tuple_arg</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a data item for a tuple.</p>
|
|
|
<p>This should only be called from a function passed to <code>emit_tuple</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>idx</code> is the (zero-based) index of the data item.</li>
|
|
|
<li><code>f</code> is a function that will call the appropriate emit method to encode
|
|
|
the data object.</li>
|
|
|
</ul>
|
|
|
<p>Note that tuple items must be emitted in order - starting with index <code>0</code>
|
|
|
and finishing with index <code>len-1</code>.</p>
|
|
|
</div><h3 id='tymethod.emit_tuple_struct' class='method'><code id='emit_tuple_struct.v'>fn <a href='#tymethod.emit_tuple_struct' class='fnname'>emit_tuple_struct</a><F>(<br> &mut self, <br> name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a tuple struct value.</p>
|
|
|
<ul>
|
|
|
<li><code>name</code> is the name of the tuple struct.</li>
|
|
|
<li><code>len</code> is the number of items in the tuple struct.</li>
|
|
|
<li><code>f</code> is a function that calls <code>emit_tuple_struct_arg</code> for each member.</li>
|
|
|
</ul>
|
|
|
<h1 id="examples-3" class="section-header"><a href="#examples-3">Examples</a></h1>
|
|
|
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encodable</span>;
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encoder</span>;
|
|
|
|
|
|
<span class="kw">struct</span> <span class="ident">Pair</span>(<span class="ident">i32</span>,<span class="ident">i32</span>);
|
|
|
|
|
|
<span class="kw">impl</span> <span class="ident">Encodable</span> <span class="kw">for</span> <span class="ident">Pair</span> {
|
|
|
<span class="kw">fn</span> <span class="ident">encode</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Encoder</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">s</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">S</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">S</span>::<span class="ident">Error</span><span class="op">></span> {
|
|
|
<span class="kw">let</span> <span class="ident">Pair</span>(<span class="ident">first</span>,<span class="ident">second</span>) <span class="op">=</span> <span class="kw-2">*</span><span class="self">self</span>;
|
|
|
<span class="ident">s</span>.<span class="ident">emit_tuple_struct</span>(<span class="string">"Pair"</span>, <span class="number">2</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_tuple_arg</span>(<span class="number">0</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_i32</span>(<span class="ident">first</span>)
|
|
|
}));
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_tuple_arg</span>(<span class="number">1</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_i32</span>(<span class="ident">second</span>)
|
|
|
}));
|
|
|
<span class="prelude-val">Ok</span>(())
|
|
|
})
|
|
|
}
|
|
|
}</pre></div>
|
|
|
</div><h3 id='tymethod.emit_tuple_struct_arg' class='method'><code id='emit_tuple_struct_arg.v'>fn <a href='#tymethod.emit_tuple_struct_arg' class='fnname'>emit_tuple_struct_arg</a><F>(<br> &mut self, <br> f_idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a data item for a tuple struct.</p>
|
|
|
<p>This should only be called from a function passed to
|
|
|
<code>emit_tuple_struct</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>f_idx</code> is the (zero-based) index of the data item.</li>
|
|
|
<li><code>f</code> is a function that will call the appropriate emit method to encode
|
|
|
the data object.</li>
|
|
|
</ul>
|
|
|
<p>Note that tuple items must be emitted in order - starting with index <code>0</code>
|
|
|
and finishing with index <code>len-1</code>.</p>
|
|
|
</div><h3 id='tymethod.emit_option' class='method'><code id='emit_option.v'>fn <a href='#tymethod.emit_option' class='fnname'>emit_option</a><F>(&mut self, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit an optional value.</p>
|
|
|
<p><code>f</code> is a function that will call either <code>emit_option_none</code> or
|
|
|
<code>emit_option_some</code> as appropriate.</p>
|
|
|
<p>This method allows encoders to handle <code>Option<T></code> values specially,
|
|
|
rather than using the generic enum methods, because many encoding
|
|
|
formats have a built-in "optional" concept.</p>
|
|
|
<p>Note that external <code>Encodable</code> implementations should not normally need
|
|
|
to use this method directly; it is meant for the use of this module's
|
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|
own implementation of <code>Encodable</code> for <code>Option<T></code>.</p>
|
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</div><h3 id='tymethod.emit_option_none' class='method'><code id='emit_option_none.v'>fn <a href='#tymethod.emit_option_none' class='fnname'>emit_option_none</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>></code></h3><div class='docblock'><p>Emit the <code>None</code> optional value.</p>
|
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|
<p>This should only be called from a function passed to <code>emit_option</code>.</p>
|
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</div><h3 id='tymethod.emit_option_some' class='method'><code id='emit_option_some.v'>fn <a href='#tymethod.emit_option_some' class='fnname'>emit_option_some</a><F>(&mut self, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit the <code>Some(x)</code> optional value.</p>
|
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|
<p><code>f</code> is a function that will call the appropriate emit method to encode
|
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|
the data object.</p>
|
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|
<p>This should only be called from a function passed to <code>emit_option</code>.</p>
|
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</div><h3 id='tymethod.emit_seq' class='method'><code id='emit_seq.v'>fn <a href='#tymethod.emit_seq' class='fnname'>emit_seq</a><F>(&mut self, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit a sequence of values.</p>
|
|
|
<p>This should be used for both array-like ordered sequences and set-like
|
|
|
unordered ones.</p>
|
|
|
<ul>
|
|
|
<li><code>len</code> is the number of values in the sequence.</li>
|
|
|
<li><code>f</code> is a function that will call <code>emit_seq_elt</code> for each value in the
|
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|
sequence.</li>
|
|
|
</ul>
|
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</div><h3 id='tymethod.emit_seq_elt' class='method'><code id='emit_seq_elt.v'>fn <a href='#tymethod.emit_seq_elt' class='fnname'>emit_seq_elt</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit an element in a sequence.</p>
|
|
|
<p>This should only be called from a function passed to <code>emit_seq</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>idx</code> is the (zero-based) index of the value in the sequence.</li>
|
|
|
<li><code>f</code> is a function that will call the appropriate emit method to encode
|
|
|
the data object.</li>
|
|
|
</ul>
|
|
|
<p>Note that sequence elements must be emitted in order - starting with
|
|
|
index <code>0</code> and finishing with index <code>len-1</code>.</p>
|
|
|
</div><h3 id='tymethod.emit_map' class='method'><code id='emit_map.v'>fn <a href='#tymethod.emit_map' class='fnname'>emit_map</a><F>(&mut self, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit an associative container (map).</p>
|
|
|
<ul>
|
|
|
<li><code>len</code> is the number of entries in the map.</li>
|
|
|
<li><code>f</code> is a function that will call <code>emit_map_elt_key</code> and
|
|
|
<code>emit_map_elt_val</code> for each entry in the map.</li>
|
|
|
</ul>
|
|
|
<h1 id="examples-4" class="section-header"><a href="#examples-4">Examples</a></h1>
|
|
|
<div class="example-wrap"><pre class="rust rust-example-rendered">
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encodable</span>;
|
|
|
<span class="kw">use</span> <span class="ident">rustc_serialize</span>::<span class="ident">Encoder</span>;
|
|
|
|
|
|
<span class="kw">struct</span> <span class="ident">SimpleMap</span><span class="op"><</span><span class="ident">K</span>,<span class="ident">V</span><span class="op">></span> {
|
|
|
<span class="ident">entries</span>: <span class="ident">Vec</span><span class="op"><</span>(<span class="ident">K</span>,<span class="ident">V</span>)<span class="op">></span>,
|
|
|
}
|
|
|
|
|
|
<span class="kw">impl</span><span class="op"><</span><span class="ident">K</span>:<span class="ident">Encodable</span>,<span class="ident">V</span>:<span class="ident">Encodable</span><span class="op">></span> <span class="ident">Encodable</span> <span class="kw">for</span> <span class="ident">SimpleMap</span><span class="op"><</span><span class="ident">K</span>,<span class="ident">V</span><span class="op">></span> {
|
|
|
<span class="kw">fn</span> <span class="ident">encode</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Encoder</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">s</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">S</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">S</span>::<span class="ident">Error</span><span class="op">></span> {
|
|
|
<span class="ident">s</span>.<span class="ident">emit_map</span>(<span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">len</span>(), <span class="op">|</span><span class="ident">s</span><span class="op">|</span> {
|
|
|
<span class="kw">for</span> (<span class="ident">i</span>, <span class="ident">e</span>) <span class="kw">in</span> <span class="self">self</span>.<span class="ident">entries</span>.<span class="ident">iter</span>().<span class="ident">enumerate</span>() {
|
|
|
<span class="kw">let</span> (<span class="kw-2">ref</span> <span class="ident">k</span>, <span class="kw-2">ref</span> <span class="ident">v</span>) <span class="op">=</span> <span class="kw-2">*</span><span class="ident">e</span>;
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_map_elt_key</span>(<span class="ident">i</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">k</span>.<span class="ident">encode</span>(<span class="ident">s</span>)));
|
|
|
<span class="macro">try</span><span class="macro">!</span>(<span class="ident">s</span>.<span class="ident">emit_map_elt_val</span>(<span class="ident">i</span>, <span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">v</span>.<span class="ident">encode</span>(<span class="ident">s</span>)));
|
|
|
}
|
|
|
<span class="prelude-val">Ok</span>(())
|
|
|
})
|
|
|
}
|
|
|
}</pre></div>
|
|
|
</div><h3 id='tymethod.emit_map_elt_key' class='method'><code id='emit_map_elt_key.v'>fn <a href='#tymethod.emit_map_elt_key' class='fnname'>emit_map_elt_key</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit the key for an entry in a map.</p>
|
|
|
<p>This should only be called from a function passed to <code>emit_map</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>idx</code> is the (zero-based) index of the entry in the map</li>
|
|
|
<li><code>f</code> is a function that will call the appropriate emit method to encode
|
|
|
the key.</li>
|
|
|
</ul>
|
|
|
<p>Note that map entries must be emitted in order - starting with index <code>0</code>
|
|
|
and finishing with index <code>len-1</code> - and for each entry, the key should be
|
|
|
emitted followed immediately by the value.</p>
|
|
|
</div><h3 id='tymethod.emit_map_elt_val' class='method'><code id='emit_map_elt_val.v'>fn <a href='#tymethod.emit_map_elt_val' class='fnname'>emit_map_elt_val</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>Self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, Self::<a class="type" href="../rustc_serialize/trait.Encoder.html#associatedtype.Error" title="type rustc_serialize::Encoder::Error">Error</a>>, </span></code></h3><div class='docblock'><p>Emit the value for an entry in a map.</p>
|
|
|
<p>This should only be called from a function passed to <code>emit_map</code>.</p>
|
|
|
<ul>
|
|
|
<li><code>idx</code> is the (zero-based) index of the entry in the map</li>
|
|
|
<li><code>f</code> is a function that will call the appropriate emit method to encode
|
|
|
the value.</li>
|
|
|
</ul>
|
|
|
<p>Note that map entries must be emitted in order - starting with index <code>0</code>
|
|
|
and finishing with index <code>len-1</code> - and for each entry, the key should be
|
|
|
emitted followed immediately by the value.</p>
|
|
|
</div></div><span class='loading-content'>Loading content...</span>
|
|
|
<h2 id='implementors' class='small-section-header'>Implementors<a href='#implementors' class='anchor'></a></h2><div class='item-list' id='implementors-list'><h3 id='impl-Encoder' class='impl'><code class='in-band'>impl<'a> Encoder for <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a></code><a href='#impl-Encoder' class='anchor'></a><a class='srclink' href='../src/rustc_serialize/json.rs.html#622-928' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-1' class="type"><code id='Error.t-1'>type <a href='#associatedtype.Error-1' class="type">Error</a> = <a class="enum" href="../rustc_serialize/json/enum.EncoderError.html" title="enum rustc_serialize::json::EncoderError">EncoderError</a></code></h4><h4 id='method.emit_nil' class="method hidden"><code id='emit_nil.v-1'>fn <a href='#method.emit_nil' class='fnname'>emit_nil</a>(&mut self) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#625-629' title='goto source code'>[src]</a></h4><h4 id='method.emit_usize' class="method hidden"><code id='emit_usize.v-1'>fn <a href='#method.emit_usize' class='fnname'>emit_usize</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#631' title='goto source code'>[src]</a></h4><h4 id='method.emit_u64' class="method hidden"><code id='emit_u64.v-1'>fn <a href='#method.emit_u64' class='fnname'>emit_u64</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#632' title='goto source code'>[src]</a></h4><h4 id='method.emit_u32' class="method hidden"><code id='emit_u32.v-1'>fn <a href='#method.emit_u32' class='fnname'>emit_u32</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#633' title='goto source code'>[src]</a></h4><h4 id='method.emit_u16' class="method hidden"><code id='emit_u16.v-1'>fn <a href='#method.emit_u16' class='fnname'>emit_u16</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#634' title='goto source code'>[src]</a></h4><h4 id='method.emit_u8' class="method hidden"><code id='emit_u8.v-1'>fn <a href='#method.emit_u8' class='fnname'>emit_u8</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#635' title='goto source code'>[src]</a></h4><h4 id='method.emit_isize' class="method hidden"><code id='emit_isize.v-1'>fn <a href='#method.emit_isize' class='fnname'>emit_isize</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#637' title='goto source code'>[src]</a></h4><h4 id='method.emit_i64' class="method hidden"><code id='emit_i64.v-1'>fn <a href='#method.emit_i64' class='fnname'>emit_i64</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#638' title='goto source code'>[src]</a></h4><h4 id='method.emit_i32' class="method hidden"><code id='emit_i32.v-1'>fn <a href='#method.emit_i32' class='fnname'>emit_i32</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#639' title='goto source code'>[src]</a></h4><h4 id='method.emit_i16' class="method hidden"><code id='emit_i16.v-1'>fn <a href='#method.emit_i16' class='fnname'>emit_i16</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#640' title='goto source code'>[src]</a></h4><h4 id='method.emit_i8' class="method hidden"><code id='emit_i8.v-1'>fn <a href='#method.emit_i8' class='fnname'>emit_i8</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#641' title='goto source code'>[src]</a></h4><h4 id='method.emit_bool' class="method hidden"><code id='emit_bool.v-1'>fn <a href='#method.emit_bool' class='fnname'>emit_bool</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#643-651' title='goto source code'>[src]</a></h4><h4 id='method.emit_f64' class="method hidden"><code id='emit_f64.v-1'>fn <a href='#method.emit_f64' class='fnname'>emit_f64</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#653-655' title='goto source code'>[src]</a></h4><h4 id='method.emit_f32' class="method hidden"><code id='emit_f32.v-1'>fn <a href='#method.emit_f32' class='fnname'>emit_f32</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#656-658' title='goto source code'>[src]</a></h4><h4 id='method.emit_char' class="method hidden"><code id='emit_char.v-1'>fn <a href='#method.emit_char' class='fnname'>emit_char</a>(&mut self, v: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.char.html">char</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#660-662' title='goto source code'>[src]</a></h4><h4 id='method.emit_str' class="method hidden"><code id='emit_str.v-1'>fn <a href='#method.emit_str' class='fnname'>emit_str</a>(&mut self, v: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#663-665' title='goto source code'>[src]</a></h4><h4 id='method.emit_enum' class="method hidden"><code id='emit_enum.v-1'>fn <a href='#method.emit_enum' class='fnname'>emit_enum</a><F>(&mut self, _name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#667-671' title='goto source code'>[src]</a></h4><h4 id='method.emit_enum_variant' class="method hidden"><code id='emit_enum_variant.v-1'>fn <a href='#method.emit_enum_variant' class='fnname'>emit_enum_variant</a><F>(<br> &mut self, <br> name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> _id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> cnt: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#673-717' title='goto source code'>[src]</a></h4><h4 id='method.emit_enum_variant_arg' class="method hidden"><code id='emit_enum_variant_arg.v-1'>fn <a href='#method.emit_enum_variant_arg' class='fnname'>emit_enum_variant_arg</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#719-733' title='goto source code'>[src]</a></h4><h4 id='method.emit_enum_struct_variant' class="method hidden"><code id='emit_enum_struct_variant.v-1'>fn <a href='#method.emit_enum_struct_variant' class='fnname'>emit_enum_struct_variant</a><F>(<br> &mut self, <br> name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> cnt: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#735-744' title='goto source code'>[src]</a></h4><h4 id='method.emit_enum_struct_variant_field' class="method hidden"><code id='emit_enum_struct_variant_field.v-1'>fn <a href='#method.emit_enum_struct_variant_field' class='fnname'>emit_enum_struct_variant_field</a><F>(<br> &mut self, <br> _: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#746-754' title='goto source code'>[src]</a></h4><h4 id='method.emit_struct' class="method hidden"><code id='emit_struct.v-1'>fn <a href='#method.emit_struct' class='fnname'>emit_struct</a><F>(&mut self, _: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#757-777' title='goto source code'>[src]</a></h4><h4 id='method.emit_struct_field' class="method hidden"><code id='emit_struct_field.v-1'>fn <a href='#method.emit_struct_field' class='fnname'>emit_struct_field</a><F>(<br> &mut self, <br> name: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#779-797' title='goto source code'>[src]</a></h4><h4 id='method.emit_tuple' class="method hidden"><code id='emit_tuple.v-1'>fn <a href='#method.emit_tuple' class='fnname'>emit_tuple</a><F>(&mut self, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#799-804' title='goto source code'>[src]</a></h4><h4 id='method.emit_tuple_arg' class="method hidden"><code id='emit_tuple_arg.v-1'>fn <a href='#method.emit_tuple_arg' class='fnname'>emit_tuple_arg</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#805-810' title='goto source code'>[src]</a></h4><h4 id='method.emit_tuple_struct' class="method hidden"><code id='emit_tuple_struct.v-1'>fn <a href='#method.emit_tuple_struct' class='fnname'>emit_tuple_struct</a><F>(<br> &mut self, <br> _: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, <br> len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <br> f: F<br>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#812-817' title='goto source code'>[src]</a></h4><h4 id='method.emit_tuple_struct_arg' class="method hidden"><code id='emit_tuple_struct_arg.v-1'>fn <a href='#method.emit_tuple_struct_arg' class='fnname'>emit_tuple_struct_arg</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#818-823' title='goto source code'>[src]</a></h4><h4 id='method.emit_option' class="method hidden"><code id='emit_option.v-1'>fn <a href='#method.emit_option' class='fnname'>emit_option</a><F>(&mut self, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#825-830' title='goto source code'>[src]</a></h4><h4 id='method.emit_option_none' class="method hidden"><code id='emit_option_none.v-1'>fn <a href='#method.emit_option_none' class='fnname'>emit_option_none</a>(&mut self) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#831-834' title='goto source code'>[src]</a></h4><h4 id='method.emit_option_some' class="method hidden"><code id='emit_option_some.v-1'>fn <a href='#method.emit_option_some' class='fnname'>emit_option_some</a><F>(&mut self, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#835-840' title='goto source code'>[src]</a></h4><h4 id='method.emit_seq' class="method hidden"><code id='emit_seq.v-1'>fn <a href='#method.emit_seq' class='fnname'>emit_seq</a><F>(&mut self, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#842-862' title='goto source code'>[src]</a></h4><h4 id='method.emit_seq_elt' class="method hidden"><code id='emit_seq_elt.v-1'>fn <a href='#method.emit_seq_elt' class='fnname'>emit_seq_elt</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#864-876' title='goto source code'>[src]</a></h4><h4 id='method.emit_map' class="method hidden"><code id='emit_map.v-1'>fn <a href='#method.emit_map' class='fnname'>emit_map</a><F>(&mut self, len: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#878-898' title='goto source code'>[src]</a></h4><h4 id='method.emit_map_elt_key' class="method hidden"><code id='emit_map_elt_key.v-1'>fn <a href='#method.emit_map_elt_key' class='fnname'>emit_map_elt_key</a><F>(&mut self, idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#900-915' title='goto source code'>[src]</a></h4><h4 id='method.emit_map_elt_val' class="method hidden"><code id='emit_map_elt_val.v-1'>fn <a href='#method.emit_map_elt_val' class='fnname'>emit_map_elt_val</a><F>(&mut self, _idx: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, f: F) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&mut <a class="struct" href="../rustc_serialize/json/struct.Encoder.html" title="struct rustc_serialize::json::Encoder">Encoder</a><'a>) -> <a class="type" href="../rustc_serialize/json/type.EncodeResult.html" title="type rustc_serialize::json::EncodeResult">EncodeResult</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>>, </span></code><a class='srclink' href='../src/rustc_serialize/json.rs.html#917-927' title='goto source code'>[src]</a></h4></div></div><span class='loading-content'>Loading content...</span><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
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