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authorManish Goregaokar <manishsmail@gmail.com>2014-09-20 23:18:34 +0530
committerManish Goregaokar <manishsmail@gmail.com>2014-09-23 17:37:27 +0530
commitfcb25a35ec7586dfa280c4787d673a3525376942 (patch)
treeb9fa11b8c10a58c96e06201cd97f2feda62f4761 /components/macros/lib.rs
parent6177a3bdcca974d5070b0ecab0973d42963946ec (diff)
downloadservo-fcb25a35ec7586dfa280c4787d673a3525376942.tar.gz
servo-fcb25a35ec7586dfa280c4787d673a3525376942.zip
Rename macros crate to plugins
Diffstat (limited to 'components/macros/lib.rs')
-rw-r--r--components/macros/lib.rs186
1 files changed, 0 insertions, 186 deletions
diff --git a/components/macros/lib.rs b/components/macros/lib.rs
deleted file mode 100644
index b8db24baea1..00000000000
--- a/components/macros/lib.rs
+++ /dev/null
@@ -1,186 +0,0 @@
-/* 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/. */
-
-#![feature(macro_rules, plugin_registrar, quote, phase)]
-
-#![deny(unused_imports, unused_variable)]
-
-//! Exports macros for use in other Servo crates.
-
-extern crate syntax;
-
-#[phase(plugin, link)]
-extern crate rustc;
-#[cfg(test)]
-extern crate sync;
-
-use syntax::ast;
-use syntax::attr::AttrMetaMethods;
-use rustc::lint::{Context, LintPass, LintPassObject, LintArray};
-use rustc::plugin::Registry;
-use rustc::middle::ty::expr_ty;
-use rustc::middle::{ty, def};
-use rustc::middle::typeck::astconv::AstConv;
-use rustc::util::ppaux::Repr;
-
-declare_lint!(TRANSMUTE_TYPE_LINT, Allow,
- "Warn and report types being transmuted")
-declare_lint!(UNROOTED_MUST_ROOT, Deny,
- "Warn and report usage of unrooted jsmanaged objects")
-
-struct TransmutePass;
-struct UnrootedPass;
-
-impl LintPass for TransmutePass {
- fn get_lints(&self) -> LintArray {
- lint_array!(TRANSMUTE_TYPE_LINT)
- }
-
- fn check_expr(&mut self, cx: &Context, ex: &ast::Expr) {
- match ex.node {
- ast::ExprCall(ref expr, ref args) => {
- match expr.node {
- ast::ExprPath(ref path) => {
- if path.segments.last()
- .map_or(false, |ref segment| segment.identifier.name.as_str() == "transmute")
- && args.len() == 1 {
- let tcx = cx.tcx();
- cx.span_lint(TRANSMUTE_TYPE_LINT, ex.span,
- format!("Transmute from {} to {} detected",
- expr_ty(tcx, ex).repr(tcx),
- expr_ty(tcx, &**args.get(0)).repr(tcx)
- ).as_slice());
- }
- }
- _ => {}
- }
- }
- _ => {}
- }
- }
-}
-
-fn lint_unrooted_ty(cx: &Context, ty: &ast::Ty, warning: &str) {
- match ty.node {
- ast::TyBox(ref t) | ast::TyUniq(ref t) |
- ast::TyVec(ref t) | ast::TyFixedLengthVec(ref t, _) |
- ast::TyPtr(ast::MutTy { ty: ref t, ..}) | ast::TyRptr(_, ast::MutTy { ty: ref t, ..}) => lint_unrooted_ty(cx, &**t, warning),
- ast::TyPath(_, _, id) => {
- match cx.tcx.def_map.borrow().get_copy(&id) {
- def::DefTy(def_id) => {
- if ty::has_attr(cx.tcx, def_id, "must_root") {
- cx.span_lint(UNROOTED_MUST_ROOT, ty.span, warning);
- }
- }
- _ => (),
- }
- }
- _ => (),
- };
-}
-
-impl LintPass for UnrootedPass {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNROOTED_MUST_ROOT)
- }
-
- fn check_struct_def(&mut self, cx: &Context, def: &ast::StructDef, _i: ast::Ident, _gen: &ast::Generics, id: ast::NodeId) {
- if cx.tcx.map.expect_item(id).attrs.iter().all(|a| !a.check_name("must_root")) {
- for ref field in def.fields.iter() {
- lint_unrooted_ty(cx, &*field.node.ty,
- "Type must be rooted, use #[must_root] on the struct definition to propagate");
- }
- }
- }
-
- fn check_variant(&mut self, cx: &Context, var: &ast::Variant, _gen: &ast::Generics) {
- let ref map = cx.tcx.map;
- if map.expect_item(map.get_parent(var.node.id)).attrs.iter().all(|a| !a.check_name("must_root")) {
- match var.node.kind {
- ast::TupleVariantKind(ref vec) => {
- for ty in vec.iter() {
- lint_unrooted_ty(cx, &*ty.ty,
- "Type must be rooted, use #[must_root] on the enum definition to propagate")
- }
- }
- _ => () // Struct variants already caught by check_struct_def
- }
- }
- }
-
- fn check_fn(&mut self, cx: &Context, kind: syntax::visit::FnKind, decl: &ast::FnDecl,
- block: &ast::Block, _span: syntax::codemap::Span, _id: ast::NodeId) {
- match kind {
- syntax::visit::FkItemFn(i, _, _, _) |
- syntax::visit::FkMethod(i, _, _) if i.as_str() == "new" || i.as_str() == "new_inherited" => {
- return;
- }
- _ => ()
- }
- match block.rules {
- ast::DefaultBlock => {
- for arg in decl.inputs.iter() {
- lint_unrooted_ty(cx, &*arg.ty,
- "Type must be rooted, use #[must_root] on the fn definition to propagate")
- }
- }
- _ => () // fn is `unsafe`
- }
- }
-
- // Partially copied from rustc::middle::lint::builtin
- // Catches `let` statements which store a #[must_root] value
- // Expressions which return out of blocks eventually end up in a `let`
- // statement or a function return (which will be caught when it is used elsewhere)
- fn check_stmt(&mut self, cx: &Context, s: &ast::Stmt) {
- // Catch the let binding
- let expr = match s.node {
- ast::StmtDecl(ref decl, _) => match decl.node {
- ast::DeclLocal(ref loc) => match loc.init {
- Some(ref e) => &**e,
- _ => return
- },
- _ => return
- },
- _ => return
- };
-
- let t = expr_ty(cx.tcx, &*expr);
- match ty::get(t).sty {
- ty::ty_struct(did, _) |
- ty::ty_enum(did, _) => {
- if ty::has_attr(cx.tcx, did, "must_root") {
- cx.span_lint(UNROOTED_MUST_ROOT, expr.span,
- format!("Expression of type {} must be rooted", t.repr(cx.tcx)).as_slice());
- }
- }
- _ => {}
- }
- }
-}
-
-#[plugin_registrar]
-pub fn plugin_registrar(reg: &mut Registry) {
- reg.register_lint_pass(box TransmutePass as LintPassObject);
- reg.register_lint_pass(box UnrootedPass as LintPassObject);
-}
-
-#[macro_export]
-macro_rules! bitfield(
- ($bitfieldname:ident, $getter:ident, $setter:ident, $value:expr) => (
- impl $bitfieldname {
- #[inline]
- pub fn $getter(self) -> bool {
- let $bitfieldname(this) = self;
- (this & $value) != 0
- }
-
- #[inline]
- pub fn $setter(&mut self, value: bool) {
- let $bitfieldname(this) = *self;
- *self = $bitfieldname((this & !$value) | (if value { $value } else { 0 }))
- }
- }
- )
-)