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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/git/checkouts/tantivy-65d0bbbddbbd5d02/433372d/src/schema/field_type.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>field_type.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="../../../tantivy/index.html"><div class="logo-container">
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 </pre><pre class="rust"><code><span class="kw">use </span>std::net::IpAddr;
 <span class="kw">use </span>std::str::FromStr;

 <span class="kw">use </span>serde::{Deserialize, Serialize};
 <span class="kw">use </span>serde_json::Value <span class="kw">as </span>JsonValue;
 <span class="kw">use </span>thiserror::Error;

 <span class="kw">use </span><span class="kw">super</span>::ip_options::IpAddrOptions;
 <span class="kw">use super</span>::{Cardinality, IntoIpv6Addr};
 <span class="kw">use </span><span class="kw">crate</span>::schema::bytes_options::BytesOptions;
 <span class="kw">use </span><span class="kw">crate</span>::schema::facet_options::FacetOptions;
 <span class="kw">use </span><span class="kw">crate</span>::schema::{
     DateOptions, Facet, IndexRecordOption, JsonObjectOptions, NumericOptions, TextFieldIndexing,
     TextOptions, Value,
 };
 <span class="kw">use </span><span class="kw">crate</span>::time::format_description::well_known::Rfc3339;
 <span class="kw">use </span><span class="kw">crate</span>::time::OffsetDateTime;
 <span class="kw">use </span><span class="kw">crate</span>::tokenizer::PreTokenizedString;
 <span class="kw">use </span><span class="kw">crate</span>::DateTime;

 <span class="doccomment">/// Possible error that may occur while parsing a field value
 /// At this point the JSON is known to be valid.
 </span><span class="attribute">#[derive(Debug, PartialEq, Error)]
 </span><span class="kw">pub enum </span>ValueParsingError {
     <span class="attribute">#[error(<span class="string">&quot;Overflow error. Expected {expected}, got {json}&quot;</span>)]
     </span>OverflowError {
         expected: <span class="kw-2">&amp;</span><span class="lifetime">&#39;static </span>str,
         json: serde_json::Value,
     },
     <span class="attribute">#[error(<span class="string">&quot;Type error. Expected {expected}, got {json}&quot;</span>)]
     </span>TypeError {
         expected: <span class="kw-2">&amp;</span><span class="lifetime">&#39;static </span>str,
         json: serde_json::Value,
     },
     <span class="attribute">#[error(<span class="string">&quot;Parse  error on {json}: {error}&quot;</span>)]
     </span>ParseError {
         error: String,
         json: serde_json::Value,
     },
     <span class="attribute">#[error(<span class="string">&quot;Invalid base64: {base64}&quot;</span>)]
     </span>InvalidBase64 { base64: String },
 }

 <span class="doccomment">/// Type of the value that a field can take.
 ///
 /// Contrary to FieldType, this does
 /// not include the way the field must be indexed.
 </span><span class="attribute">#[derive(Copy, Clone, Debug, Eq, PartialEq)]
 #[repr(u8)]
 </span><span class="kw">pub enum </span>Type {
     <span class="doccomment">/// `&amp;str`
     </span>Str = <span class="string">b&#39;s&#39;</span>,
     <span class="doccomment">/// `u64`
     </span>U64 = <span class="string">b&#39;u&#39;</span>,
     <span class="doccomment">/// `i64`
     </span>I64 = <span class="string">b&#39;i&#39;</span>,
     <span class="doccomment">/// `f64`
     </span>F64 = <span class="string">b&#39;f&#39;</span>,
     <span class="doccomment">/// `bool`
     </span>Bool = <span class="string">b&#39;o&#39;</span>,
     <span class="doccomment">/// `date(i64) timestamp`
     </span>Date = <span class="string">b&#39;d&#39;</span>,
     <span class="doccomment">/// `tantivy::schema::Facet`. Passed as a string in JSON.
     </span>Facet = <span class="string">b&#39;h&#39;</span>,
     <span class="doccomment">/// `Vec&lt;u8&gt;`
     </span>Bytes = <span class="string">b&#39;b&#39;</span>,
     <span class="doccomment">/// Leaf in a Json object.
     </span>Json = <span class="string">b&#39;j&#39;</span>,
     <span class="doccomment">/// IpAddr
     </span>IpAddr = <span class="string">b&#39;p&#39;</span>,
 }

 <span class="kw">const </span>ALL_TYPES: [Type; <span class="number">10</span>] = [
     Type::Str,
     Type::U64,
     Type::I64,
     Type::F64,
     Type::Bool,
     Type::Date,
     Type::Facet,
     Type::Bytes,
     Type::Json,
     Type::IpAddr,
 ];

 <span class="kw">impl </span>Type {
     <span class="doccomment">/// Returns an iterator over the different values
     /// the Type enum can tape.
     </span><span class="kw">pub fn </span>iter_values() -&gt; <span class="kw">impl </span>Iterator&lt;Item = Type&gt; {
         ALL_TYPES.iter().cloned()
     }

     <span class="doccomment">/// Returns a 1 byte code used to identify the type.
     </span><span class="kw">pub fn </span>to_code(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; u8 {
         <span class="kw-2">*</span><span class="self">self </span><span class="kw">as </span>u8
     }

     <span class="doccomment">/// Returns a human readable name for the Type.
     </span><span class="kw">pub fn </span>name(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span><span class="lifetime">&#39;static </span>str {
         <span class="kw">match </span><span class="self">self </span>{
             Type::Str =&gt; <span class="string">&quot;Str&quot;</span>,
             Type::U64 =&gt; <span class="string">&quot;U64&quot;</span>,
             Type::I64 =&gt; <span class="string">&quot;I64&quot;</span>,
             Type::F64 =&gt; <span class="string">&quot;F64&quot;</span>,
             Type::Bool =&gt; <span class="string">&quot;Bool&quot;</span>,
             Type::Date =&gt; <span class="string">&quot;Date&quot;</span>,
             Type::Facet =&gt; <span class="string">&quot;Facet&quot;</span>,
             Type::Bytes =&gt; <span class="string">&quot;Bytes&quot;</span>,
             Type::Json =&gt; <span class="string">&quot;Json&quot;</span>,
             Type::IpAddr =&gt; <span class="string">&quot;IpAddr&quot;</span>,
         }
     }

     <span class="doccomment">/// Interprets a 1byte code as a type.
     /// Returns `None` if the code is invalid.
     </span><span class="kw">pub fn </span>from_code(code: u8) -&gt; <span class="prelude-ty">Option</span>&lt;<span class="self">Self</span>&gt; {
         <span class="kw">match </span>code {
             <span class="string">b&#39;s&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::Str),
             <span class="string">b&#39;u&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::U64),
             <span class="string">b&#39;i&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::I64),
             <span class="string">b&#39;f&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::F64),
             <span class="string">b&#39;o&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::Bool),
             <span class="string">b&#39;d&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::Date),
             <span class="string">b&#39;h&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::Facet),
             <span class="string">b&#39;b&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::Bytes),
             <span class="string">b&#39;j&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::Json),
             <span class="string">b&#39;p&#39; </span>=&gt; <span class="prelude-val">Some</span>(Type::IpAddr),
             <span class="kw">_ </span>=&gt; <span class="prelude-val">None</span>,
         }
     }
 }

 <span class="doccomment">/// A `FieldType` describes the type (text, u64) of a field as well as
 /// how it should be handled by tantivy.
 </span><span class="attribute">#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
 #[serde(tag = <span class="string">&quot;type&quot;</span>, content = <span class="string">&quot;options&quot;</span>)]
 #[serde(rename_all = <span class="string">&quot;snake_case&quot;</span>)]
 </span><span class="kw">pub enum </span>FieldType {
     <span class="doccomment">/// String field type configuration
     </span><span class="attribute">#[serde(rename = <span class="string">&quot;text&quot;</span>)]
     </span>Str(TextOptions),
     <span class="doccomment">/// Unsigned 64-bits integers field type configuration
     </span>U64(NumericOptions),
     <span class="doccomment">/// Signed 64-bits integers 64 field type configuration
     </span>I64(NumericOptions),
     <span class="doccomment">/// 64-bits float 64 field type configuration
     </span>F64(NumericOptions),
     <span class="doccomment">/// Bool field type configuration
     </span>Bool(NumericOptions),
     <span class="doccomment">/// Signed 64-bits Date 64 field type configuration,
     </span>Date(DateOptions),
     <span class="doccomment">/// Hierarchical Facet
     </span>Facet(FacetOptions),
     <span class="doccomment">/// Bytes (one per document)
     </span>Bytes(BytesOptions),
     <span class="doccomment">/// Json object
     </span>JsonObject(JsonObjectOptions),
     <span class="doccomment">/// IpAddr field
     </span>IpAddr(IpAddrOptions),
 }

 <span class="kw">impl </span>FieldType {
     <span class="doccomment">/// Returns the value type associated for this field.
     </span><span class="kw">pub fn </span>value_type(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; Type {
         <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
             FieldType::Str(<span class="kw">_</span>) =&gt; Type::Str,
             FieldType::U64(<span class="kw">_</span>) =&gt; Type::U64,
             FieldType::I64(<span class="kw">_</span>) =&gt; Type::I64,
             FieldType::F64(<span class="kw">_</span>) =&gt; Type::F64,
             FieldType::Bool(<span class="kw">_</span>) =&gt; Type::Bool,
             FieldType::Date(<span class="kw">_</span>) =&gt; Type::Date,
             FieldType::Facet(<span class="kw">_</span>) =&gt; Type::Facet,
             FieldType::Bytes(<span class="kw">_</span>) =&gt; Type::Bytes,
             FieldType::JsonObject(<span class="kw">_</span>) =&gt; Type::Json,
             FieldType::IpAddr(<span class="kw">_</span>) =&gt; Type::IpAddr,
         }
     }

     <span class="doccomment">/// returns true if this is an ip address field
     </span><span class="kw">pub fn </span>is_ip_addr(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
         <span class="macro">matches!</span>(<span class="self">self</span>, FieldType::IpAddr(<span class="kw">_</span>))
     }

     <span class="doccomment">/// returns true if this is an date field
     </span><span class="kw">pub fn </span>is_date(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
         <span class="macro">matches!</span>(<span class="self">self</span>, FieldType::Date(<span class="kw">_</span>))
     }

     <span class="doccomment">/// returns true if the field is indexed.
     </span><span class="kw">pub fn </span>is_indexed(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
         <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
             FieldType::Str(<span class="kw-2">ref </span>text_options) =&gt; text_options.get_indexing_options().is_some(),
             FieldType::U64(<span class="kw-2">ref </span>int_options)
             | FieldType::I64(<span class="kw-2">ref </span>int_options)
             | FieldType::F64(<span class="kw-2">ref </span>int_options)
             | FieldType::Bool(<span class="kw-2">ref </span>int_options) =&gt; int_options.is_indexed(),
             FieldType::Date(<span class="kw-2">ref </span>date_options) =&gt; date_options.is_indexed(),
             FieldType::Facet(<span class="kw-2">ref </span>_facet_options) =&gt; <span class="bool-val">true</span>,
             FieldType::Bytes(<span class="kw-2">ref </span>bytes_options) =&gt; bytes_options.is_indexed(),
             FieldType::JsonObject(<span class="kw-2">ref </span>json_object_options) =&gt; json_object_options.is_indexed(),
             FieldType::IpAddr(<span class="kw-2">ref </span>ip_addr_options) =&gt; ip_addr_options.is_indexed(),
         }
     }

     <span class="doccomment">/// Returns the index record option for the field.
     ///
     /// If the field is not indexed, returns `None`.
     </span><span class="kw">pub fn </span>index_record_option(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span>&lt;IndexRecordOption&gt; {
         <span class="kw">match </span><span class="self">self </span>{
             FieldType::Str(text_options) =&gt; text_options
                 .get_indexing_options()
                 .map(|text_indexing| text_indexing.index_option()),
             FieldType::JsonObject(json_object_options) =&gt; json_object_options
                 .get_text_indexing_options()
                 .map(|text_indexing| text_indexing.index_option()),
             field_type =&gt; {
                 <span class="kw">if </span>field_type.is_indexed() {
                     <span class="prelude-val">Some</span>(IndexRecordOption::Basic)
                 } <span class="kw">else </span>{
                     <span class="prelude-val">None
                 </span>}
             }
         }
     }

     <span class="doccomment">/// returns true if the field is fast.
     </span><span class="kw">pub fn </span>is_fast(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
         <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
             FieldType::Bytes(<span class="kw-2">ref </span>bytes_options) =&gt; bytes_options.is_fast(),
             FieldType::Str(<span class="kw-2">ref </span>text_options) =&gt; text_options.is_fast(),
             FieldType::U64(<span class="kw-2">ref </span>int_options)
             | FieldType::I64(<span class="kw-2">ref </span>int_options)
             | FieldType::F64(<span class="kw-2">ref </span>int_options)
             | FieldType::Bool(<span class="kw-2">ref </span>int_options) =&gt; int_options.is_fast(),
             FieldType::Date(<span class="kw-2">ref </span>date_options) =&gt; date_options.is_fast(),
             FieldType::IpAddr(<span class="kw-2">ref </span>ip_addr_options) =&gt; ip_addr_options.is_fast(),
             FieldType::Facet(<span class="kw">_</span>) =&gt; <span class="bool-val">true</span>,
             FieldType::JsonObject(<span class="kw">_</span>) =&gt; <span class="bool-val">false</span>,
         }
     }

     <span class="doccomment">/// returns true if the field is fast.
     </span><span class="kw">pub fn </span>fastfield_cardinality(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span>&lt;Cardinality&gt; {
         <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
             FieldType::Bytes(<span class="kw-2">ref </span>bytes_options) =&gt; {
                 bytes_options.is_fast().then_some(Cardinality::SingleValue)
             }
             FieldType::Str(<span class="kw-2">ref </span>text_options) =&gt; {
                 text_options.is_fast().then_some(Cardinality::MultiValues)
             }
             FieldType::U64(<span class="kw-2">ref </span>int_options)
             | FieldType::I64(<span class="kw-2">ref </span>int_options)
             | FieldType::F64(<span class="kw-2">ref </span>int_options)
             | FieldType::Bool(<span class="kw-2">ref </span>int_options) =&gt; int_options.get_fastfield_cardinality(),
             FieldType::Date(<span class="kw-2">ref </span>date_options) =&gt; date_options.get_fastfield_cardinality(),
             FieldType::Facet(<span class="kw">_</span>) =&gt; <span class="prelude-val">Some</span>(Cardinality::MultiValues),
             FieldType::JsonObject(<span class="kw">_</span>) =&gt; <span class="prelude-val">None</span>,
             FieldType::IpAddr(<span class="kw-2">ref </span>ip_addr_options) =&gt; ip_addr_options.get_fastfield_cardinality(),
         }
     }

     <span class="doccomment">/// returns true if the field is normed (see [fieldnorms](crate::fieldnorm)).
     </span><span class="kw">pub fn </span>has_fieldnorms(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
         <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
             FieldType::Str(<span class="kw-2">ref </span>text_options) =&gt; text_options
                 .get_indexing_options()
                 .map(|options| options.fieldnorms())
                 .unwrap_or(<span class="bool-val">false</span>),
             FieldType::U64(<span class="kw-2">ref </span>int_options)
             | FieldType::I64(<span class="kw-2">ref </span>int_options)
             | FieldType::F64(<span class="kw-2">ref </span>int_options)
             | FieldType::Bool(<span class="kw-2">ref </span>int_options) =&gt; int_options.fieldnorms(),
             FieldType::Date(<span class="kw-2">ref </span>date_options) =&gt; date_options.fieldnorms(),
             FieldType::Facet(<span class="kw">_</span>) =&gt; <span class="bool-val">false</span>,
             FieldType::Bytes(<span class="kw-2">ref </span>bytes_options) =&gt; bytes_options.fieldnorms(),
             FieldType::JsonObject(<span class="kw-2">ref </span>_json_object_options) =&gt; <span class="bool-val">false</span>,
             FieldType::IpAddr(<span class="kw-2">ref </span>ip_addr_options) =&gt; ip_addr_options.fieldnorms(),
         }
     }

     <span class="doccomment">/// Given a field configuration, return the maximal possible
     /// `IndexRecordOption` available.
     ///
     /// For the Json object, this does not necessarily mean it is the index record
     /// option level is available for all terms.
     /// (Non string terms have the Basic indexing option at most.)
     ///
     /// If the field is not indexed, then returns `None`.
     </span><span class="kw">pub fn </span>get_index_record_option(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span>&lt;IndexRecordOption&gt; {
         <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
             FieldType::Str(<span class="kw-2">ref </span>text_options) =&gt; text_options
                 .get_indexing_options()
                 .map(TextFieldIndexing::index_option),
             FieldType::U64(<span class="kw-2">ref </span>int_options)
             | FieldType::I64(<span class="kw-2">ref </span>int_options)
             | FieldType::F64(<span class="kw-2">ref </span>int_options)
             | FieldType::Bool(<span class="kw-2">ref </span>int_options) =&gt; {
                 <span class="kw">if </span>int_options.is_indexed() {
                     <span class="prelude-val">Some</span>(IndexRecordOption::Basic)
                 } <span class="kw">else </span>{
                     <span class="prelude-val">None
                 </span>}
             }
             FieldType::Date(<span class="kw-2">ref </span>date_options) =&gt; {
                 <span class="kw">if </span>date_options.is_indexed() {
                     <span class="prelude-val">Some</span>(IndexRecordOption::Basic)
                 } <span class="kw">else </span>{
                     <span class="prelude-val">None
                 </span>}
             }
             FieldType::Facet(<span class="kw-2">ref </span>_facet_options) =&gt; <span class="prelude-val">Some</span>(IndexRecordOption::Basic),
             FieldType::Bytes(<span class="kw-2">ref </span>bytes_options) =&gt; {
                 <span class="kw">if </span>bytes_options.is_indexed() {
                     <span class="prelude-val">Some</span>(IndexRecordOption::Basic)
                 } <span class="kw">else </span>{
                     <span class="prelude-val">None
                 </span>}
             }
             FieldType::JsonObject(<span class="kw-2">ref </span>json_obj_options) =&gt; json_obj_options
                 .get_text_indexing_options()
                 .map(TextFieldIndexing::index_option),
             FieldType::IpAddr(<span class="kw-2">ref </span>ip_addr_options) =&gt; {
                 <span class="kw">if </span>ip_addr_options.is_indexed() {
                     <span class="prelude-val">Some</span>(IndexRecordOption::Basic)
                 } <span class="kw">else </span>{
                     <span class="prelude-val">None
                 </span>}
             }
         }
     }

     <span class="doccomment">/// Parses a field value from json, given the target FieldType.
     ///
     /// Tantivy will not try to cast values.
     /// For instance, If the json value is the integer `3` and the
     /// target field is a `Str`, this method will return an Error.
     </span><span class="kw">pub fn </span>value_from_json(<span class="kw-2">&amp;</span><span class="self">self</span>, json: JsonValue) -&gt; <span class="prelude-ty">Result</span>&lt;Value, ValueParsingError&gt; {
         <span class="kw">match </span>json {
             JsonValue::String(field_text) =&gt; {
                 <span class="kw">match </span><span class="self">self </span>{
                     FieldType::Date(<span class="kw">_</span>) =&gt; {
                         <span class="kw">let </span>dt_with_fixed_tz = OffsetDateTime::parse(<span class="kw-2">&amp;</span>field_text, <span class="kw-2">&amp;</span>Rfc3339)
                             .map_err(|_err| ValueParsingError::TypeError {
                                 expected: <span class="string">&quot;rfc3339 format&quot;</span>,
                                 json: JsonValue::String(field_text),
                             })<span class="question-mark">?</span>;
                         <span class="prelude-val">Ok</span>(DateTime::from_utc(dt_with_fixed_tz).into())
                     }
                     FieldType::Str(<span class="kw">_</span>) =&gt; <span class="prelude-val">Ok</span>(Value::Str(field_text)),
                     FieldType::U64(<span class="kw">_</span>) | FieldType::I64(<span class="kw">_</span>) | FieldType::F64(<span class="kw">_</span>) =&gt; {
                         <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                             expected: <span class="string">&quot;an integer&quot;</span>,
                             json: JsonValue::String(field_text),
                         })
                     }
                     FieldType::Bool(<span class="kw">_</span>) =&gt; <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                         expected: <span class="string">&quot;a boolean&quot;</span>,
                         json: JsonValue::String(field_text),
                     }),
                     FieldType::Facet(<span class="kw">_</span>) =&gt; <span class="prelude-val">Ok</span>(Value::Facet(Facet::from(<span class="kw-2">&amp;</span>field_text))),
                     FieldType::Bytes(<span class="kw">_</span>) =&gt; base64::decode(<span class="kw-2">&amp;</span>field_text)
                         .map(Value::Bytes)
                         .map_err(|<span class="kw">_</span>| ValueParsingError::InvalidBase64 { base64: field_text }),
                     FieldType::JsonObject(<span class="kw">_</span>) =&gt; <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                         expected: <span class="string">&quot;a json object&quot;</span>,
                         json: JsonValue::String(field_text),
                     }),
                     FieldType::IpAddr(<span class="kw">_</span>) =&gt; {
                         <span class="kw">let </span>ip_addr: IpAddr = IpAddr::from_str(<span class="kw-2">&amp;</span>field_text).map_err(|err| {
                             ValueParsingError::ParseError {
                                 error: err.to_string(),
                                 json: JsonValue::String(field_text),
                             }
                         })<span class="question-mark">?</span>;

                         <span class="prelude-val">Ok</span>(Value::IpAddr(ip_addr.into_ipv6_addr()))
                     }
                 }
             }
             JsonValue::Number(field_val_num) =&gt; <span class="kw">match </span><span class="self">self </span>{
                 FieldType::I64(<span class="kw">_</span>) | FieldType::Date(<span class="kw">_</span>) =&gt; {
                     <span class="kw">if let </span><span class="prelude-val">Some</span>(field_val_i64) = field_val_num.as_i64() {
                         <span class="prelude-val">Ok</span>(Value::I64(field_val_i64))
                     } <span class="kw">else </span>{
                         <span class="prelude-val">Err</span>(ValueParsingError::OverflowError {
                             expected: <span class="string">&quot;an i64 int&quot;</span>,
                             json: JsonValue::Number(field_val_num),
                         })
                     }
                 }
                 FieldType::U64(<span class="kw">_</span>) =&gt; {
                     <span class="kw">if let </span><span class="prelude-val">Some</span>(field_val_u64) = field_val_num.as_u64() {
                         <span class="prelude-val">Ok</span>(Value::U64(field_val_u64))
                     } <span class="kw">else </span>{
                         <span class="prelude-val">Err</span>(ValueParsingError::OverflowError {
                             expected: <span class="string">&quot;u64&quot;</span>,
                             json: JsonValue::Number(field_val_num),
                         })
                     }
                 }
                 FieldType::F64(<span class="kw">_</span>) =&gt; {
                     <span class="kw">if let </span><span class="prelude-val">Some</span>(field_val_f64) = field_val_num.as_f64() {
                         <span class="prelude-val">Ok</span>(Value::F64(field_val_f64))
                     } <span class="kw">else </span>{
                         <span class="prelude-val">Err</span>(ValueParsingError::OverflowError {
                             expected: <span class="string">&quot;a f64&quot;</span>,
                             json: JsonValue::Number(field_val_num),
                         })
                     }
                 }
                 FieldType::Bool(<span class="kw">_</span>) =&gt; <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                     expected: <span class="string">&quot;a boolean&quot;</span>,
                     json: JsonValue::Number(field_val_num),
                 }),
                 FieldType::Str(<span class="kw">_</span>) | FieldType::Facet(<span class="kw">_</span>) | FieldType::Bytes(<span class="kw">_</span>) =&gt; {
                     <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                         expected: <span class="string">&quot;a string&quot;</span>,
                         json: JsonValue::Number(field_val_num),
                     })
                 }
                 FieldType::JsonObject(<span class="kw">_</span>) =&gt; <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                     expected: <span class="string">&quot;a json object&quot;</span>,
                     json: JsonValue::Number(field_val_num),
                 }),
                 FieldType::IpAddr(<span class="kw">_</span>) =&gt; <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                     expected: <span class="string">&quot;a string with an ip addr&quot;</span>,
                     json: JsonValue::Number(field_val_num),
                 }),
             },
             JsonValue::Object(json_map) =&gt; <span class="kw">match </span><span class="self">self </span>{
                 FieldType::Str(<span class="kw">_</span>) =&gt; {
                     <span class="kw">if let </span><span class="prelude-val">Ok</span>(tok_str_val) = serde_json::from_value::&lt;PreTokenizedString&gt;(
                         serde_json::Value::Object(json_map.clone()),
                     ) {
                         <span class="prelude-val">Ok</span>(Value::PreTokStr(tok_str_val))
                     } <span class="kw">else </span>{
                         <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                             expected: <span class="string">&quot;a string or an pretokenized string&quot;</span>,
                             json: JsonValue::Object(json_map),
                         })
                     }
                 }
                 FieldType::JsonObject(<span class="kw">_</span>) =&gt; <span class="prelude-val">Ok</span>(Value::JsonObject(json_map)),
                 <span class="kw">_ </span>=&gt; <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                     expected: <span class="self">self</span>.value_type().name(),
                     json: JsonValue::Object(json_map),
                 }),
             },
             JsonValue::Bool(json_bool_val) =&gt; <span class="kw">match </span><span class="self">self </span>{
                 FieldType::Bool(<span class="kw">_</span>) =&gt; <span class="prelude-val">Ok</span>(Value::Bool(json_bool_val)),
                 <span class="kw">_ </span>=&gt; <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                     expected: <span class="self">self</span>.value_type().name(),
                     json: JsonValue::Bool(json_bool_val),
                 }),
             },
             <span class="kw">_ </span>=&gt; <span class="prelude-val">Err</span>(ValueParsingError::TypeError {
                 expected: <span class="self">self</span>.value_type().name(),
                 json: json.clone(),
             }),
         }
     }
 }

 <span class="attribute">#[cfg(test)]
 </span><span class="kw">mod </span>tests {
     <span class="kw">use </span>serde_json::json;

     <span class="kw">use </span><span class="kw">super</span>::FieldType;
     <span class="kw">use </span><span class="kw">crate</span>::schema::field_type::ValueParsingError;
     <span class="kw">use </span><span class="kw">crate</span>::schema::{Schema, TextOptions, Type, Value, INDEXED};
     <span class="kw">use </span><span class="kw">crate</span>::time::{Date, Month, PrimitiveDateTime, Time};
     <span class="kw">use </span><span class="kw">crate</span>::tokenizer::{PreTokenizedString, Token};
     <span class="kw">use crate</span>::{DateTime, Document};

     <span class="attribute">#[test]
     </span><span class="kw">fn </span>test_deserialize_json_date() {
         <span class="kw">let </span><span class="kw-2">mut </span>schema_builder = Schema::builder();
         <span class="kw">let </span>date_field = schema_builder.add_date_field(<span class="string">&quot;date&quot;</span>, INDEXED);
         <span class="kw">let </span>schema = schema_builder.build();
         <span class="kw">let </span>doc_json = <span class="string">r#&quot;{&quot;date&quot;: &quot;2019-10-12T07:20:50.52+02:00&quot;}&quot;#</span>;
         <span class="kw">let </span>doc = schema.parse_document(doc_json).unwrap();
         <span class="kw">let </span>date = doc.get_first(date_field).unwrap();
         <span class="comment">// Time zone is converted to UTC
         </span><span class="macro">assert_eq!</span>(<span class="string">&quot;Date(2019-10-12T05:20:50.52Z)&quot;</span>, <span class="macro">format!</span>(<span class="string">&quot;{:?}&quot;</span>, date));
     }

     <span class="attribute">#[test]
     </span><span class="kw">fn </span>test_serialize_json_date() {
         <span class="kw">let </span><span class="kw-2">mut </span>doc = Document::new();
         <span class="kw">let </span><span class="kw-2">mut </span>schema_builder = Schema::builder();
         <span class="kw">let </span>date_field = schema_builder.add_date_field(<span class="string">&quot;date&quot;</span>, INDEXED);
         <span class="kw">let </span>schema = schema_builder.build();
         <span class="kw">let </span>naive_date = Date::from_calendar_date(<span class="number">1982</span>, Month::September, <span class="number">17</span>).unwrap();
         <span class="kw">let </span>naive_time = Time::from_hms(<span class="number">13</span>, <span class="number">20</span>, <span class="number">0</span>).unwrap();
         <span class="kw">let </span>date_time = PrimitiveDateTime::new(naive_date, naive_time);
         doc.add_date(date_field, DateTime::from_primitive(date_time));
         <span class="kw">let </span>doc_json = schema.to_json(<span class="kw-2">&amp;</span>doc);
         <span class="macro">assert_eq!</span>(doc_json, <span class="string">r#&quot;{&quot;date&quot;:[&quot;1982-09-17T13:20:00Z&quot;]}&quot;#</span>);
     }

     <span class="attribute">#[test]
     </span><span class="kw">fn </span>test_bytes_value_from_json() {
         <span class="kw">let </span>result = FieldType::Bytes(Default::default())
             .value_from_json(<span class="macro">json!</span>(<span class="string">&quot;dGhpcyBpcyBhIHRlc3Q=&quot;</span>))
             .unwrap();
         <span class="macro">assert_eq!</span>(result, Value::Bytes(<span class="string">&quot;this is a test&quot;</span>.as_bytes().to_vec()));

         <span class="kw">let </span>result = FieldType::Bytes(Default::default()).value_from_json(<span class="macro">json!</span>(<span class="number">521</span>));
         <span class="kw">match </span>result {
             <span class="prelude-val">Err</span>(ValueParsingError::TypeError { .. }) =&gt; {}
             <span class="kw">_ </span>=&gt; <span class="macro">panic!</span>(<span class="string">&quot;Expected parse failure for wrong type&quot;</span>),
         }

         <span class="kw">let </span>result = FieldType::Bytes(Default::default()).value_from_json(<span class="macro">json!</span>(<span class="string">&quot;-&quot;</span>));
         <span class="kw">match </span>result {
             <span class="prelude-val">Err</span>(ValueParsingError::InvalidBase64 { .. }) =&gt; {}
             <span class="kw">_ </span>=&gt; <span class="macro">panic!</span>(<span class="string">&quot;Expected parse failure for invalid base64&quot;</span>),
         }
     }

     <span class="attribute">#[test]
     </span><span class="kw">fn </span>test_pre_tok_str_value_from_json() {
         <span class="kw">let </span>pre_tokenized_string_json = <span class="string">r#&quot;{
   &quot;text&quot;: &quot;The Old Man&quot;,
   &quot;tokens&quot;: [
     {
       &quot;offset_from&quot;: 0,
       &quot;offset_to&quot;: 3,
       &quot;position&quot;: 0,
       &quot;text&quot;: &quot;The&quot;,
       &quot;position_length&quot;: 1
     },
     {
       &quot;offset_from&quot;: 4,
       &quot;offset_to&quot;: 7,
       &quot;position&quot;: 1,
       &quot;text&quot;: &quot;Old&quot;,
       &quot;position_length&quot;: 1
     },
     {
       &quot;offset_from&quot;: 8,
       &quot;offset_to&quot;: 11,
       &quot;position&quot;: 2,
       &quot;text&quot;: &quot;Man&quot;,
       &quot;position_length&quot;: 1
     }
   ]
 }&quot;#</span>;

         <span class="kw">let </span>expected_value = Value::PreTokStr(PreTokenizedString {
             text: String::from(<span class="string">&quot;The Old Man&quot;</span>),
             tokens: <span class="macro">vec!</span>[
                 Token {
                     offset_from: <span class="number">0</span>,
                     offset_to: <span class="number">3</span>,
                     position: <span class="number">0</span>,
                     text: String::from(<span class="string">&quot;The&quot;</span>),
                     position_length: <span class="number">1</span>,
                 },
                 Token {
                     offset_from: <span class="number">4</span>,
                     offset_to: <span class="number">7</span>,
                     position: <span class="number">1</span>,
                     text: String::from(<span class="string">&quot;Old&quot;</span>),
                     position_length: <span class="number">1</span>,
                 },
                 Token {
                     offset_from: <span class="number">8</span>,
                     offset_to: <span class="number">11</span>,
                     position: <span class="number">2</span>,
                     text: String::from(<span class="string">&quot;Man&quot;</span>),
                     position_length: <span class="number">1</span>,
                 },
             ],
         });

         <span class="kw">let </span>deserialized_value = FieldType::Str(TextOptions::default())
             .value_from_json(serde_json::from_str(pre_tokenized_string_json).unwrap())
             .unwrap();

         <span class="macro">assert_eq!</span>(deserialized_value, expected_value);

         <span class="kw">let </span>serialized_value_json = serde_json::to_string_pretty(<span class="kw-2">&amp;</span>expected_value).unwrap();

         <span class="macro">assert_eq!</span>(serialized_value_json, pre_tokenized_string_json);
     }

     <span class="attribute">#[test]
     </span><span class="kw">fn </span>test_type_codes() {
         <span class="kw">for </span>type_val <span class="kw">in </span>Type::iter_values() {
             <span class="kw">let </span>code = type_val.to_code();
             <span class="macro">assert_eq!</span>(Type::from_code(code), <span class="prelude-val">Some</span>(type_val));
         }
         <span class="macro">assert_eq!</span>(Type::from_code(<span class="string">b&#39;z&#39;</span>), <span class="prelude-val">None</span>);
     }
 }
 </code></pre></div>
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