use rustc::hir;
use rustc::hir::intravisit::{NestedVisitorMap, Visitor};
use rustc::hir::{BindingAnnotation, Expr, ExprKind, Pat, PatKind, QPath, Stmt, StmtKind, TyKind};
-use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
-use rustc::{declare_tool_lint, lint_array};
+use rustc::lint::{LateContext, LateLintPass, LintArray, LintContext, LintPass};
+use rustc::session::Session;
+use rustc::{declare_lint_pass, declare_tool_lint};
use rustc_data_structures::fx::FxHashMap;
-use syntax::ast::{Attribute, LitKind, DUMMY_NODE_ID};
+use syntax::ast::{Attribute, LitKind};
-/// **What it does:** Generates clippy code that detects the offending pattern
-///
-/// **Example:**
-/// ```rust
-/// // ./tests/ui/my_lint.rs
-/// fn foo() {
-/// // detect the following pattern
-/// #[clippy::author]
-/// if x == 42 {
-/// // but ignore everything from here on
-/// #![clippy::author = "ignore"]
-/// }
-/// }
-/// ```
-///
-/// Running `TESTNAME=ui/my_lint cargo uitest` will produce
-/// a `./tests/ui/new_lint.stdout` file with the generated code:
-///
-/// ```rust
-/// // ./tests/ui/new_lint.stdout
-/// if_chain! {
-/// if let ExprKind::If(ref cond, ref then, None) = item.node,
-/// if let ExprKind::Binary(BinOp::Eq, ref left, ref right) = cond.node,
-/// if let ExprKind::Path(ref path) = left.node,
-/// if let ExprKind::Lit(ref lit) = right.node,
-/// if let LitKind::Int(42, _) = lit.node,
-/// then {
-/// // report your lint here
-/// }
-/// }
-/// ```
declare_clippy_lint! {
+ /// **What it does:** Generates clippy code that detects the offending pattern
+ ///
+ /// **Example:**
+ /// ```rust
+ /// // ./tests/ui/my_lint.rs
+ /// fn foo() {
+ /// // detect the following pattern
+ /// #[clippy::author]
+ /// if x == 42 {
+ /// // but ignore everything from here on
+ /// #![clippy::author = "ignore"]
+ /// }
+ /// }
+ /// ```
+ ///
+ /// Running `TESTNAME=ui/my_lint cargo uitest` will produce
+ /// a `./tests/ui/new_lint.stdout` file with the generated code:
+ ///
+ /// ```rust
+ /// // ./tests/ui/new_lint.stdout
+ /// if_chain! {
+ /// if let ExprKind::If(ref cond, ref then, None) = item.node,
+ /// if let ExprKind::Binary(BinOp::Eq, ref left, ref right) = cond.node,
+ /// if let ExprKind::Path(ref path) = left.node,
+ /// if let ExprKind::Lit(ref lit) = right.node,
+ /// if let LitKind::Int(42, _) = lit.node,
+ /// then {
+ /// // report your lint here
+ /// }
+ /// }
+ /// ```
pub LINT_AUTHOR,
internal_warn,
"helper for writing lints"
}
-pub struct Pass;
-
-impl LintPass for Pass {
- fn get_lints(&self) -> LintArray {
- lint_array!(LINT_AUTHOR)
- }
-
- fn name(&self) -> &'static str {
- "Author"
- }
-}
+declare_lint_pass!(Author => [LINT_AUTHOR]);
fn prelude() {
println!("if_chain! {{");
println!("}}");
}
-impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Pass {
- fn check_item(&mut self, _cx: &LateContext<'a, 'tcx>, item: &'tcx hir::Item) {
- if !has_attr(&item.attrs) {
+impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Author {
+ fn check_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::Item) {
+ if !has_attr(cx.sess(), &item.attrs) {
return;
}
prelude();
done();
}
- fn check_impl_item(&mut self, _cx: &LateContext<'a, 'tcx>, item: &'tcx hir::ImplItem) {
- if !has_attr(&item.attrs) {
+ fn check_impl_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::ImplItem) {
+ if !has_attr(cx.sess(), &item.attrs) {
return;
}
prelude();
done();
}
- fn check_trait_item(&mut self, _cx: &LateContext<'a, 'tcx>, item: &'tcx hir::TraitItem) {
- if !has_attr(&item.attrs) {
+ fn check_trait_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::TraitItem) {
+ if !has_attr(cx.sess(), &item.attrs) {
return;
}
prelude();
done();
}
- fn check_variant(&mut self, _cx: &LateContext<'a, 'tcx>, var: &'tcx hir::Variant, generics: &hir::Generics) {
- if !has_attr(&var.node.attrs) {
+ fn check_variant(&mut self, cx: &LateContext<'a, 'tcx>, var: &'tcx hir::Variant, generics: &hir::Generics) {
+ if !has_attr(cx.sess(), &var.node.attrs) {
return;
}
prelude();
- PrintVisitor::new("var").visit_variant(var, generics, DUMMY_NODE_ID);
+ PrintVisitor::new("var").visit_variant(var, generics, hir::DUMMY_HIR_ID);
done();
}
- fn check_struct_field(&mut self, _cx: &LateContext<'a, 'tcx>, field: &'tcx hir::StructField) {
- if !has_attr(&field.attrs) {
+ fn check_struct_field(&mut self, cx: &LateContext<'a, 'tcx>, field: &'tcx hir::StructField) {
+ if !has_attr(cx.sess(), &field.attrs) {
return;
}
prelude();
done();
}
- fn check_expr(&mut self, _cx: &LateContext<'a, 'tcx>, expr: &'tcx hir::Expr) {
- if !has_attr(&expr.attrs) {
+ fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx hir::Expr) {
+ if !has_attr(cx.sess(), &expr.attrs) {
return;
}
prelude();
done();
}
- fn check_arm(&mut self, _cx: &LateContext<'a, 'tcx>, arm: &'tcx hir::Arm) {
- if !has_attr(&arm.attrs) {
+ fn check_arm(&mut self, cx: &LateContext<'a, 'tcx>, arm: &'tcx hir::Arm) {
+ if !has_attr(cx.sess(), &arm.attrs) {
return;
}
prelude();
done();
}
- fn check_stmt(&mut self, _cx: &LateContext<'a, 'tcx>, stmt: &'tcx hir::Stmt) {
- if !has_attr(stmt.node.attrs()) {
+ fn check_stmt(&mut self, cx: &LateContext<'a, 'tcx>, stmt: &'tcx hir::Stmt) {
+ if !has_attr(cx.sess(), stmt.node.attrs()) {
return;
}
prelude();
done();
}
- fn check_foreign_item(&mut self, _cx: &LateContext<'a, 'tcx>, item: &'tcx hir::ForeignItem) {
- if !has_attr(&item.attrs) {
+ fn check_foreign_item(&mut self, cx: &LateContext<'a, 'tcx>, item: &'tcx hir::ForeignItem) {
+ if !has_attr(cx.sess(), &item.attrs) {
return;
}
prelude();
ExprKind::Err => {
println!("Err = {}", current);
},
+ ExprKind::DropTemps(ref expr) => {
+ let expr_pat = self.next("expr");
+ println!("DropTemps(ref {}) = {};", expr_pat, current);
+ self.current = expr_pat;
+ self.visit_expr(expr);
+ },
}
}
println!("Local(ref {}) = {};", local_pat, current);
if let Some(ref init) = local.init {
let init_pat = self.next("init");
- println!(" if let Some(ref {}) = {}.init", init_pat, local_pat);
+ println!(" if let Some(ref {}) = {}.init;", init_pat, local_pat);
self.current = init_pat;
self.visit_expr(init);
}
}
}
-fn has_attr(attrs: &[Attribute]) -> bool {
- get_attr(attrs, "author").count() > 0
+fn has_attr(sess: &Session, attrs: &[Attribute]) -> bool {
+ get_attr(sess, attrs, "author").count() > 0
}
fn desugaring_name(des: hir::MatchSource) -> String {
projects / rust.git / blobdiff