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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="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.96/src/macros.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>macros.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../serde_json/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../serde_json/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span>
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</pre><pre class="rust"><code><span class="doccomment">/// Construct a `serde_json::Value` from a JSON literal.
///
/// ```
/// # use serde_json::json;
/// #
/// let value = json!({
/// &quot;code&quot;: 200,
/// &quot;success&quot;: true,
/// &quot;payload&quot;: {
/// &quot;features&quot;: [
/// &quot;serde&quot;,
/// &quot;json&quot;
/// ]
/// }
/// });
/// ```
///
/// Variables or expressions can be interpolated into the JSON literal. Any type
/// interpolated into an array element or object value must implement Serde&#39;s
/// `Serialize` trait, while any type interpolated into a object key must
/// implement `Into&lt;String&gt;`. If the `Serialize` implementation of the
/// interpolated type decides to fail, or if the interpolated type contains a
/// map with non-string keys, the `json!` macro will panic.
///
/// ```
/// # use serde_json::json;
/// #
/// let code = 200;
/// let features = vec![&quot;serde&quot;, &quot;json&quot;];
///
/// let value = json!({
/// &quot;code&quot;: code,
/// &quot;success&quot;: code == 200,
/// &quot;payload&quot;: {
/// features[0]: features[1]
/// }
/// });
/// ```
///
/// Trailing commas are allowed inside both arrays and objects.
///
/// ```
/// # use serde_json::json;
/// #
/// let value = json!([
/// &quot;notice&quot;,
/// &quot;the&quot;,
/// &quot;trailing&quot;,
/// &quot;comma --&gt;&quot;,
/// ]);
/// ```
</span><span class="attribute">#[macro_export(local_inner_macros)]
</span><span class="macro">macro_rules! </span>json {
<span class="comment">// Hide distracting implementation details from the generated rustdoc.
</span>($(<span class="macro-nonterminal">$json</span>:tt)+) =&gt; {
<span class="macro">json_internal!</span>($(<span class="macro-nonterminal">$json</span>)+)
};
}
<span class="comment">// Rocket relies on this because they export their own `json!` with a different
// doc comment than ours, and various Rust bugs prevent them from calling our
// `json!` from their `json!` so they call `json_internal!` directly. Check with
// @SergioBenitez before making breaking changes to this macro.
//
// Changes are fine as long as `json_internal!` does not call any new helper
// macros and can still be invoked as `json_internal!($($json)+)`.
</span><span class="attribute">#[macro_export(local_inner_macros)]
#[doc(hidden)]
</span><span class="macro">macro_rules! </span>json_internal {
<span class="comment">//////////////////////////////////////////////////////////////////////////
// TT muncher for parsing the inside of an array [...]. Produces a vec![...]
// of the elements.
//
// Must be invoked as: json_internal!(@array [] $($tt)*)
//////////////////////////////////////////////////////////////////////////
// Done with trailing comma.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr,)<span class="kw-2">*</span>]) =&gt; {
<span class="macro">json_internal_vec!</span>[$(<span class="macro-nonterminal">$elems</span>,)<span class="kw-2">*</span>]
};
<span class="comment">// Done without trailing comma.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr),<span class="kw-2">*</span>]) =&gt; {
<span class="macro">json_internal_vec!</span>[$(<span class="macro-nonterminal">$elems</span>),<span class="kw-2">*</span>]
};
<span class="comment">// Next element is `null`.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr,)<span class="kw-2">*</span>] null $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">json_internal!</span>(@array [$(<span class="macro-nonterminal">$elems</span>,)* <span class="macro">json_internal!</span>(null)] $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>)
};
<span class="comment">// Next element is `true`.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr,)<span class="kw-2">*</span>] <span class="bool-val">true </span>$(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">json_internal!</span>(@array [$(<span class="macro-nonterminal">$elems</span>,)* <span class="macro">json_internal!</span>(<span class="bool-val">true</span>)] $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>)
};
<span class="comment">// Next element is `false`.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr,)<span class="kw-2">*</span>] <span class="bool-val">false </span>$(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">json_internal!</span>(@array [$(<span class="macro-nonterminal">$elems</span>,)* <span class="macro">json_internal!</span>(<span class="bool-val">false</span>)] $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>)
};
<span class="comment">// Next element is an array.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr,)<span class="kw-2">*</span>] [$(<span class="macro-nonterminal">$array</span>:tt)<span class="kw-2">*</span>] $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">json_internal!</span>(@array [$(<span class="macro-nonterminal">$elems</span>,)* <span class="macro">json_internal!</span>([$(<span class="macro-nonterminal">$array</span>)<span class="kw-2">*</span>])] $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>)
};
<span class="comment">// Next element is a map.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr,)<span class="kw-2">*</span>] {$(<span class="macro-nonterminal">$map</span>:tt)<span class="kw-2">*</span>} $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">json_internal!</span>(@array [$(<span class="macro-nonterminal">$elems</span>,)* <span class="macro">json_internal!</span>({$(<span class="macro-nonterminal">$map</span>)<span class="kw-2">*</span>})] $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>)
};
<span class="comment">// Next element is an expression followed by comma.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr,)<span class="kw-2">*</span>] <span class="macro-nonterminal">$next</span>:expr, $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">json_internal!</span>(@array [$(<span class="macro-nonterminal">$elems</span>,)* <span class="macro">json_internal!</span>(<span class="macro-nonterminal">$next</span>),] $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>)
};
<span class="comment">// Last element is an expression with no trailing comma.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr,)<span class="kw-2">*</span>] <span class="macro-nonterminal">$last</span>:expr) =&gt; {
<span class="macro">json_internal!</span>(@array [$(<span class="macro-nonterminal">$elems</span>,)* <span class="macro">json_internal!</span>(<span class="macro-nonterminal">$last</span>)])
};
<span class="comment">// Comma after the most recent element.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr),<span class="kw-2">*</span>] , $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">json_internal!</span>(@array [$(<span class="macro-nonterminal">$elems</span>,)<span class="kw-2">*</span>] $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>)
};
<span class="comment">// Unexpected token after most recent element.
</span>(@array [$(<span class="macro-nonterminal">$elems</span>:expr),<span class="kw-2">*</span>] <span class="macro-nonterminal">$unexpected</span>:tt $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">json_unexpected!</span>(<span class="macro-nonterminal">$unexpected</span>)
};
<span class="comment">//////////////////////////////////////////////////////////////////////////
// TT muncher for parsing the inside of an object {...}. Each entry is
// inserted into the given map variable.
//
// Must be invoked as: json_internal!(@object $map () ($($tt)*) ($($tt)*))
//
// We require two copies of the input tokens so that we can match on one
// copy and trigger errors on the other copy.
//////////////////////////////////////////////////////////////////////////
// Done.
</span>(@object <span class="macro-nonterminal">$object</span>:ident () () ()) =&gt; {};
<span class="comment">// Insert the current entry followed by trailing comma.
</span>(@object <span class="macro-nonterminal">$object</span>:ident [$(<span class="macro-nonterminal">$key</span>:tt)+] (<span class="macro-nonterminal">$value</span>:expr) , $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="kw">let _ </span>= <span class="macro-nonterminal">$object</span>.insert(($(<span class="macro-nonterminal">$key</span>)+).into(), <span class="macro-nonterminal">$value</span>);
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>() ($(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>));
};
<span class="comment">// Current entry followed by unexpected token.
</span>(@object <span class="macro-nonterminal">$object</span>:ident [$(<span class="macro-nonterminal">$key</span>:tt)+] (<span class="macro-nonterminal">$value</span>:expr) <span class="macro-nonterminal">$unexpected</span>:tt $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">json_unexpected!</span>(<span class="macro-nonterminal">$unexpected</span>);
};
<span class="comment">// Insert the last entry without trailing comma.
</span>(@object <span class="macro-nonterminal">$object</span>:ident [$(<span class="macro-nonterminal">$key</span>:tt)+] (<span class="macro-nonterminal">$value</span>:expr)) =&gt; {
<span class="kw">let _ </span>= <span class="macro-nonterminal">$object</span>.insert(($(<span class="macro-nonterminal">$key</span>)+).into(), <span class="macro-nonterminal">$value</span>);
};
<span class="comment">// Next value is `null`.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)+) (: null $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>[$(<span class="macro-nonterminal">$key</span>)+] (<span class="macro">json_internal!</span>(null)) $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>);
};
<span class="comment">// Next value is `true`.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)+) (: <span class="bool-val">true </span>$(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>[$(<span class="macro-nonterminal">$key</span>)+] (<span class="macro">json_internal!</span>(<span class="bool-val">true</span>)) $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>);
};
<span class="comment">// Next value is `false`.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)+) (: <span class="bool-val">false </span>$(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>[$(<span class="macro-nonterminal">$key</span>)+] (<span class="macro">json_internal!</span>(<span class="bool-val">false</span>)) $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>);
};
<span class="comment">// Next value is an array.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)+) (: [$(<span class="macro-nonterminal">$array</span>:tt)<span class="kw-2">*</span>] $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>[$(<span class="macro-nonterminal">$key</span>)+] (<span class="macro">json_internal!</span>([$(<span class="macro-nonterminal">$array</span>)<span class="kw-2">*</span>])) $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>);
};
<span class="comment">// Next value is a map.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)+) (: {$(<span class="macro-nonterminal">$map</span>:tt)<span class="kw-2">*</span>} $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>[$(<span class="macro-nonterminal">$key</span>)+] (<span class="macro">json_internal!</span>({$(<span class="macro-nonterminal">$map</span>)<span class="kw-2">*</span>})) $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>);
};
<span class="comment">// Next value is an expression followed by comma.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)+) (: <span class="macro-nonterminal">$value</span>:expr , $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>[$(<span class="macro-nonterminal">$key</span>)+] (<span class="macro">json_internal!</span>(<span class="macro-nonterminal">$value</span>)) , $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>);
};
<span class="comment">// Last value is an expression with no trailing comma.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)+) (: <span class="macro-nonterminal">$value</span>:expr) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>[$(<span class="macro-nonterminal">$key</span>)+] (<span class="macro">json_internal!</span>(<span class="macro-nonterminal">$value</span>)));
};
<span class="comment">// Missing value for last entry. Trigger a reasonable error message.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)+) (:) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="comment">// &quot;unexpected end of macro invocation&quot;
</span><span class="macro">json_internal!</span>();
};
<span class="comment">// Missing colon and value for last entry. Trigger a reasonable error
// message.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)+) () <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="comment">// &quot;unexpected end of macro invocation&quot;
</span><span class="macro">json_internal!</span>();
};
<span class="comment">// Misplaced colon. Trigger a reasonable error message.
</span>(@object <span class="macro-nonterminal">$object</span>:ident () (: $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) (<span class="macro-nonterminal">$colon</span>:tt $(<span class="macro-nonterminal">$copy</span>:tt)<span class="kw-2">*</span>)) =&gt; {
<span class="comment">// Takes no arguments so &quot;no rules expected the token `:`&quot;.
</span><span class="macro">json_unexpected!</span>(<span class="macro-nonterminal">$colon</span>);
};
<span class="comment">// Found a comma inside a key. Trigger a reasonable error message.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)<span class="kw-2">*</span>) (, $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) (<span class="macro-nonterminal">$comma</span>:tt $(<span class="macro-nonterminal">$copy</span>:tt)<span class="kw-2">*</span>)) =&gt; {
<span class="comment">// Takes no arguments so &quot;no rules expected the token `,`&quot;.
</span><span class="macro">json_unexpected!</span>(<span class="macro-nonterminal">$comma</span>);
};
<span class="comment">// Key is fully parenthesized. This avoids clippy double_parens false
// positives because the parenthesization may be necessary here.
</span>(@object <span class="macro-nonterminal">$object</span>:ident () ((<span class="macro-nonterminal">$key</span>:expr) : $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>(<span class="macro-nonterminal">$key</span>) (: $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>) (: $(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>));
};
<span class="comment">// Refuse to absorb colon token into key expression.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)<span class="kw-2">*</span>) (: $(<span class="macro-nonterminal">$unexpected</span>:tt)+) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_expect_expr_comma!</span>($(<span class="macro-nonterminal">$unexpected</span>)+);
};
<span class="comment">// Munch a token into the current key.
</span>(@object <span class="macro-nonterminal">$object</span>:ident ($(<span class="macro-nonterminal">$key</span>:tt)<span class="kw-2">*</span>) (<span class="macro-nonterminal">$tt</span>:tt $(<span class="macro-nonterminal">$rest</span>:tt)<span class="kw-2">*</span>) <span class="macro-nonterminal">$copy</span>:tt) =&gt; {
<span class="macro">json_internal!</span>(@object <span class="macro-nonterminal">$object </span>($(<span class="macro-nonterminal">$key</span>)* <span class="macro-nonterminal">$tt</span>) ($(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>) ($(<span class="macro-nonterminal">$rest</span>)<span class="kw-2">*</span>));
};
<span class="comment">//////////////////////////////////////////////////////////////////////////
// The main implementation.
//
// Must be invoked as: json_internal!($($json)+)
//////////////////////////////////////////////////////////////////////////
</span>(null) =&gt; {
<span class="macro-nonterminal">$crate::Value::Null
</span>};
(<span class="bool-val">true</span>) =&gt; {
<span class="macro-nonterminal">$crate::Value::Bool</span>(<span class="bool-val">true</span>)
};
(<span class="bool-val">false</span>) =&gt; {
<span class="macro-nonterminal">$crate::Value::Bool</span>(<span class="bool-val">false</span>)
};
([]) =&gt; {
<span class="macro-nonterminal">$crate::Value::Array</span>(<span class="macro">json_internal_vec!</span>[])
};
([ $(<span class="macro-nonterminal">$tt</span>:tt)+ ]) =&gt; {
<span class="macro-nonterminal">$crate::Value::Array</span>(<span class="macro">json_internal!</span>(@array [] $(<span class="macro-nonterminal">$tt</span>)+))
};
({}) =&gt; {
<span class="macro-nonterminal">$crate::Value::Object</span>(<span class="macro-nonterminal">$crate::Map::new</span>())
};
({ $(<span class="macro-nonterminal">$tt</span>:tt)+ }) =&gt; {
<span class="macro-nonterminal">$crate::Value::Object</span>({
<span class="kw">let </span><span class="kw-2">mut </span>object = <span class="macro-nonterminal">$crate::Map::new</span>();
<span class="macro">json_internal!</span>(@object object () ($(<span class="macro-nonterminal">$tt</span>)+) ($(<span class="macro-nonterminal">$tt</span>)+));
object
})
};
<span class="comment">// Any Serialize type: numbers, strings, struct literals, variables etc.
// Must be below every other rule.
</span>(<span class="macro-nonterminal">$other</span>:expr) =&gt; {
<span class="macro-nonterminal">$crate::to_value</span>(<span class="kw-2">&amp;</span><span class="macro-nonterminal">$other</span>).unwrap()
};
}
<span class="comment">// The json_internal macro above cannot invoke vec directly because it uses
// local_inner_macros. A vec invocation there would resolve to $crate::vec.
// Instead invoke vec here outside of local_inner_macros.
</span><span class="attribute">#[macro_export]
#[doc(hidden)]
</span><span class="macro">macro_rules! </span>json_internal_vec {
($(<span class="macro-nonterminal">$content</span>:tt)<span class="kw-2">*</span>) =&gt; {
<span class="macro">vec!</span>[$(<span class="macro-nonterminal">$content</span>)<span class="kw-2">*</span>]
};
}
<span class="attribute">#[macro_export]
#[doc(hidden)]
</span><span class="macro">macro_rules! </span>json_unexpected {
() =&gt; {};
}
<span class="attribute">#[macro_export]
#[doc(hidden)]
</span><span class="macro">macro_rules! </span>json_expect_expr_comma {
(<span class="macro-nonterminal">$e</span>:expr , $(<span class="macro-nonterminal">$tt</span>:tt)<span class="kw-2">*</span>) =&gt; {};
}
</code></pre></div>
</section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="serde_json" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html>