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rustc: Don't allow private fields to be named in constructors or destructured

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This commit is contained in:
Patrick Walton 2012-09-04 19:07:23 -07:00
parent fba673b26b
commit 9b88b5fe38
3 changed files with 79 additions and 3 deletions
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54
src/rustc/middle/privacy.rs
View File

@ -3,8 +3,9 @@
use /*mod*/ syntax::ast;
use /*mod*/ syntax::visit;
use syntax::ast::{expr_field, ident, item_class, item_impl, item_trait};
use syntax::ast::{local_crate, node_id, private, provided, required};
use syntax::ast::{expr_field, expr_struct, ident, item_class, item_impl};
use syntax::ast::{item_trait, local_crate, node_id, pat_struct, private};
use syntax::ast::{provided, required};
use syntax::ast_map::{node_item, node_method};
use ty::ty_class;
use typeck::{method_map, method_origin, method_param, method_static};
@ -160,7 +161,7 @@ fn check_crate(tcx: ty::ctxt, method_map: &method_map, crate: @ast::crate) {
match method_map.find(expr.id) {
None => {
debug!("(privacy checking) checking \
field");
field access");
check_field(expr.span, id, ident);
}
Some(entry) => {
@ -173,11 +174,58 @@ fn check_crate(tcx: ty::ctxt, method_map: &method_map, crate: @ast::crate) {
_ => {}
}
}
expr_struct(_, fields, _) => {
match ty::get(ty::expr_ty(tcx, expr)).struct {
ty_class(id, _) => {
if id.crate != local_crate ||
!privileged_items.contains(id.node) {
for fields.each |field| {
debug!("(privacy checking) checking \
field in struct literal");
check_field(expr.span, id,
field.node.ident);
}
}
}
_ => {
tcx.sess.span_bug(expr.span, ~"struct expr \
didn't have \
struct type?!");
}
}
}
_ => {}
}
visit::visit_expr(expr, method_map, visitor);
},
visit_pat: |pattern, method_map, visitor| {
match pattern.node {
pat_struct(_, fields, _) => {
match ty::get(ty::pat_ty(tcx, pattern)).struct {
ty_class(id, _) => {
if id.crate != local_crate ||
!privileged_items.contains(id.node) {
for fields.each |field| {
debug!("(privacy checking) checking \
struct pattern");
check_field(pattern.span, id,
field.ident);
}
}
}
_ => {
tcx.sess.span_bug(pattern.span,
~"struct pattern didn't have \
struct type?!");
}
}
}
_ => {}
}
visit::visit_pat(pattern, method_map, visitor);
},
.. *visit::default_visitor()
});
visit::visit_crate(*crate, method_map, visitor);

10
src/test/compile-fail/private-struct-field-ctor.rs Normal file
View File

@ -0,0 +1,10 @@
mod a {
struct Foo {
priv x: int
}
}
fn main() {
let s = a::Foo { x: 1 }; //~ ERROR field `x` is private
}

18
src/test/compile-fail/private-struct-field-pattern.rs Normal file
View File

@ -0,0 +1,18 @@
use a::Foo;
mod a {
struct Foo {
priv x: int
}
fn make() -> Foo {
Foo { x: 3 }
}
}
fn main() {
match a::make() {
Foo { x: _ } => {} //~ ERROR field `x` is private
}
}