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use lint::{LintPassObject, LintId, Lint};
use session::Session;
use syntax::ext::base::{SyntaxExtension, NamedSyntaxExtension, NormalTT};
use syntax::ext::base::{IdentTT, Decorator, Modifier, MultiModifier, MacroRulesTT};
use syntax::ext::base::{MacroExpanderFn};
use syntax::codemap::Span;
use syntax::parse::token;
use syntax::ptr::P;
use syntax::ast;
use std::collections::HashMap;
pub struct Registry<'a> {
pub sess: &'a Session,
#[doc(hidden)]
pub args_hidden: Option<Vec<P<ast::MetaItem>>>,
#[doc(hidden)]
pub krate_span: Span,
#[doc(hidden)]
pub syntax_exts: Vec<NamedSyntaxExtension>,
#[doc(hidden)]
pub lint_passes: Vec<LintPassObject>,
#[doc(hidden)]
pub lint_groups: HashMap<&'static str, Vec<LintId>>,
}
impl<'a> Registry<'a> {
#[doc(hidden)]
pub fn new(sess: &'a Session, krate: &ast::Crate) -> Registry<'a> {
Registry {
sess: sess,
args_hidden: None,
krate_span: krate.span,
syntax_exts: vec!(),
lint_passes: vec!(),
lint_groups: HashMap::new(),
}
}
pub fn args<'b>(&'b self) -> &'b Vec<P<ast::MetaItem>> {
self.args_hidden.as_ref().expect("args not set")
}
pub fn register_syntax_extension(&mut self, name: ast::Name, extension: SyntaxExtension) {
self.syntax_exts.push((name, match extension {
NormalTT(ext, _) => NormalTT(ext, Some(self.krate_span)),
IdentTT(ext, _) => IdentTT(ext, Some(self.krate_span)),
Decorator(ext) => Decorator(ext),
Modifier(ext) => Modifier(ext),
MultiModifier(ext) => MultiModifier(ext),
MacroRulesTT => {
self.sess.err("plugin tried to register a new MacroRulesTT");
return;
}
}));
}
pub fn register_macro(&mut self, name: &str, expander: MacroExpanderFn) {
self.register_syntax_extension(token::intern(name), NormalTT(box expander, None));
}
pub fn register_lint_pass(&mut self, lint_pass: LintPassObject) {
self.lint_passes.push(lint_pass);
}
pub fn register_lint_group(&mut self, name: &'static str, to: Vec<&'static Lint>) {
self.lint_groups.insert(name, to.into_iter().map(|x| LintId::of(x)).collect());
}
}