You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: search.rs
    path of file: ./repos/chainsaw/src
    
    the code of the file until where you have to start completion: use std::path::Path;

use chrono::{DateTime, NaiveDateTime, TimeZone, Utc};
use chrono_tz::Tz;
use regex::{RegexSet, RegexSetBuilder};
use serde_json::Value as Json;
use tau_engine::{
    core::parser::{BoolSym, Expression},
    Document as Doc,
};

use crate::e
    
    fn next(&mut self) -> Option<Self::Item> {
        for document in self.documents.by_ref() {
            let document = match document {
                Ok(document) => document,
                Err(e) => {
                    if self.searcher.skip_errors {
                        continue;
                    }
                    return Some(Err(e));
                }
            };
            if self.searcher.timestamp.is_some()
                && (self.searcher.from.is_some() || self.searcher.to.is_some())
            {
                let field = self
                    .searcher
                    .timestamp
                    .as_ref()
                    .expect("could not get timestamp");
                // TODO: Default to RFC 3339
                let result = match &document {
                    Document::Evtx(evtx) => {
                        match crate::evtx::WrapperLegacy(&evtx.data).find(field) {
                            Some(value) => match value.as_str() {
                                Some(timestamp) => NaiveDateTime::parse_from_str(
                                    timestamp,
                                    "%Y-%m-%dT%H:%M:%S%.6fZ",
                                ),
                                None => continue,
                            },
                            None => continue,
                        }
                    }
                    Document::Hve(json)
                    | Document::Json(json)
                    | Document::Xml(json)
                    | Document::Mft(json)
                    | Document::Esedb(json) => match json.find(field) {
                        Some(value) => match value.as_str() {
                            Some(timestamp) => {
                                NaiveDateTime::parse_from_str(timestamp, "%Y-%m-%dT%H:%M:%S%.6fZ")
                            }
                            None => continue,
                        },
                        None => continue,
                    },
                };
                let timestamp = match result {
                    Ok(t) => t,
                    Err(e) => {
                        if self.searcher.skip_errors {
                            cs_eyellowln!("failed to parse timestamp - {}", e);
                            continue;
                        } else {
                            return Some(Err(anyhow::anyhow!("failed to parse timestamp - {}", e)));
                        }
                    }
                };
                // TODO: Not sure if this is correct...
                let localised = if let Some(timezone) = self.searcher.timezone {
                    let local = match timezone.from_local_datetime(&timestamp).single() {
                        Some(l) => l,
                        None => {
                            if self.searcher.skip_errors {
                                cs_eyellowln!("failed to localise timestamp");
                                continue;
                            } else {
                                return Some(Err(anyhow::anyhow!("failed to localise timestamp")));
                            }
                        }
                    };
                    local.with_timezone(&Utc)
                } else if self.searcher.local {
                    match Utc.from_local_datetime(&timestamp).single() {
                        Some(l) => l,
                        None => {
                            if self.searcher.skip_errors {
                                cs_eyellowln!("failed to localise timestamp");
                                continue;
                            } else {
                                return Some(Err(anyhow::anyhow!("failed to localise timestamp")));
                            }
                        }
                    }
                } else {
                    Utc.from_utc_datetime(&timestamp)
                };
                // Check if event is older than start date marker
                if let Some(sd) = self.searcher.from {
                    if localised <= sd {
                        continue;
                    }
                }
                // Check if event is newer than end date marker
                if let Some(ed) = self.searcher.to {
                    if localised >= ed {
                        continue;
                    }
                }
            }
            // TODO: Remove duplication...
            match document {
                Document::Evtx(evtx) => {
                    let wrapper = crate::evtx::WrapperLegacy(&evtx.data);
                    if let Some(expression) = &self.searcher.tau {
                        if !tau_engine::core::solve(expression, &wrapper) {
                            continue;
                        }
                        if self.searcher.regex.is_empty() {
                            return Some(Ok(evtx.data));
                        }
                    }
                    if evtx.matches(&self.searcher.regex, &self.searcher.match_all) {
                        return Some(Ok(evtx.data));
                    }
                }
                Document::Hve(json)
                | Document::Json(json)
                | Document::Xml(json)
                | Document::Mft(json)
                | Document::Esedb(json) => {
                    if let Some(expression) = &self.searcher.tau {
                        if !tau_engine::core::solve(expression, &json) {
                            continue;
                        }
                        if self.searcher.regex.is_empty() {
                            return Some(Ok(json));
                        }
                    }
                    if json.matches(&self.searcher.regex, &self.searcher.match_all) {
                        return Some(Ok(json));
                    }
                }
            };
        }
        None
    }