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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use syntax::{ast, ast_util};
use syntax::ast::Public;
use syntax::attr::AttrMetaMethods;
use rustc::lint::{Context, LintPass, LintArray};
use rustc::middle::ty;
declare_lint!(PRIVATIZE, Deny,
"Allows to enforce private fields for struct definitions");
/// Lint for keeping DOM fields private
///
/// This lint (disable with `-A privatize`/`#[allow(privatize)]`) ensures all types marked with `#[privatize]` have no private fields
pub struct PrivatizePass;
impl LintPass for PrivatizePass {
fn get_lints(&self) -> LintArray {
lint_array!(PRIVATIZE)
}
fn check_struct_def(&mut self, cx: &Context, def: &ast::StructDef, _i: ast::Ident, _gen: &ast::Generics, id: ast::NodeId) {
if ty::has_attr(cx.tcx, ast_util::local_def(id), "privatize") {
for field in def.fields.iter() {
match field.node {
ast::StructField_ { kind: ast::NamedField(ident, visibility), .. } if visibility == Public => {
cx.span_lint(PRIVATIZE, field.span,
format!("Field {} is public where only private fields are allowed", ident.name).as_slice());
}
_ => {}
}
}
}
}
}
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