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#[derive(Clone, Debug)]
pub struct RegexOptions {
pub pats: Vec<String>,
pub size_limit: usize,
pub dfa_size_limit: usize,
pub case_insensitive: bool,
pub multi_line: bool,
pub dot_matches_new_line: bool,
pub swap_greed: bool,
pub ignore_whitespace: bool,
pub unicode: bool,
}
impl Default for RegexOptions {
fn default() -> Self {
RegexOptions {
pats: vec![],
size_limit: 10 * (1<<20),
dfa_size_limit: 2 * (1<<20),
case_insensitive: false,
multi_line: false,
dot_matches_new_line: false,
swap_greed: false,
ignore_whitespace: false,
unicode: true,
}
}
}
macro_rules! define_builder {
($name:ident, $regex_mod:ident, $unicode:expr, $only_utf8:expr) => {
pub mod $name {
use error::Error;
use exec::ExecBuilder;
use super::RegexOptions;
use $regex_mod::Regex;
pub struct RegexBuilder(RegexOptions);
impl RegexBuilder {
pub fn new(pattern: &str) -> RegexBuilder {
let mut builder = RegexBuilder(RegexOptions::default());
builder.0.pats.push(pattern.to_owned());
builder.0.unicode = $unicode;
builder
}
pub fn compile(self) -> Result<Regex, Error> {
ExecBuilder::new_options(self.0)
.only_utf8($only_utf8)
.build()
.map(Regex::from)
}
pub fn case_insensitive(mut self, yes: bool) -> RegexBuilder {
self.0.case_insensitive = yes;
self
}
pub fn multi_line(mut self, yes: bool) -> RegexBuilder {
self.0.multi_line = yes;
self
}
pub fn dot_matches_new_line(mut self, yes: bool) -> RegexBuilder {
self.0.dot_matches_new_line = yes;
self
}
pub fn swap_greed(mut self, yes: bool) -> RegexBuilder {
self.0.swap_greed = yes;
self
}
pub fn ignore_whitespace(mut self, yes: bool) -> RegexBuilder {
self.0.ignore_whitespace = yes;
self
}
pub fn unicode(mut self, yes: bool) -> RegexBuilder {
self.0.unicode = yes;
self
}
pub fn size_limit(mut self, limit: usize) -> RegexBuilder {
self.0.size_limit = limit;
self
}
pub fn dfa_size_limit(mut self, limit: usize) -> RegexBuilder {
self.0.dfa_size_limit = limit;
self
}
}
}
}
}
define_builder!(bytes, re_bytes, false, false);
define_builder!(unicode, re_unicode, true, true);