Merge branch 'macro-use' into HEAD

clippy_lints/Cargo.toml

@@ -21,8 +21,8 @@ edition = "2018"
 [dependencies]
 cargo_metadata = "0.5"
 itertools = "0.7"
-lazy_static = "1.0"
-matches = "0.1.2"
+lazy_static = "1.0.2"
+matches = "0.1.7"
 quine-mc_cluskey = "0.2.2"
 regex-syntax = "0.6"
 semver = "0.9.0"
@@ -32,7 +32,7 @@ toml = "0.4"
 unicode-normalization = "0.1"
 pulldown-cmark = "0.1"
 url = "1.7.0"
-if_chain = "0.1"
+if_chain = "0.1.3"
 
 [features]
 debugging = []

clippy_lints/src/approx_const.rs

@@ -1,6 +1,7 @@
 use crate::utils::span_lint;
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use std::f64::consts as f64;
 use syntax::ast::{FloatTy, Lit, LitKind};
 use syntax::symbol;

clippy_lints/src/arithmetic.rs

@@ -1,6 +1,7 @@
 use crate::utils::span_lint;
 use rustc::hir;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::codemap::Span;
 
 /// **What it does:** Checks for plain integer arithmetic.

clippy_lints/src/assign_ops.rs

@@ -3,6 +3,8 @@
 use rustc::hir;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::ast;
 
 /// **What it does:** Checks for compound assignment operations (`+=` and

clippy_lints/src/attrs.rs

@@ -7,6 +7,8 @@
 };
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty::{self, TyCtxt};
 use semver::Version;
 use syntax::ast::{AttrStyle, Attribute, Lit, LitKind, MetaItemKind, NestedMetaItem, NestedMetaItemKind};

clippy_lints/src/bit_mask.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::ast::LitKind;
 use syntax::codemap::Span;
 use crate::utils::{span_lint, span_lint_and_then};

clippy_lints/src/blacklisted_name.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use crate::utils::span_lint;
 

clippy_lints/src/block_in_if_condition.rs

@@ -1,4 +1,6 @@
+use matches::matches;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
 use crate::utils::*;

clippy_lints/src/booleans.rs

@@ -1,4 +1,5 @@
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use rustc::hir::intravisit::*;
 use syntax::ast::{LitKind, NodeId, DUMMY_NODE_ID};

clippy_lints/src/bytecount.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty;
 use syntax::ast::{Name, UintTy};
 use crate::utils::{contains_name, get_pat_name, match_type, paths, single_segment_path, snippet, span_lint_and_sugg,

clippy_lints/src/collapsible_if.rs

@@ -13,6 +13,8 @@
 //! This lint is **warn** by default
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::ast;
 
 use crate::utils::{in_macro, snippet_block, span_lint_and_sugg, span_lint_and_then};

clippy_lints/src/const_static_lifetime.rs

@@ -1,5 +1,6 @@
 use syntax::ast::*;
 use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
+use rustc::{declare_lint, lint_array};
 use crate::utils::{in_macro, snippet, span_lint_and_then};
 
 /// **What it does:** Checks for constants with an explicit `'static` lifetime.

clippy_lints/src/consts.rs

@@ -2,6 +2,7 @@
 #![allow(float_cmp)]
 
 use rustc::lint::LateContext;
+use rustc::{span_bug, bug};
 use rustc::hir::def::Def;
 use rustc::hir::*;
 use rustc::ty::{self, Ty, TyCtxt, Instance};

clippy_lints/src/copies.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::ty::Ty;
 use rustc::hir::*;
 use std::collections::HashMap;

clippy_lints/src/cyclomatic_complexity.rs

@@ -2,6 +2,7 @@
 
 use rustc::cfg::CFG;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use rustc::ty;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};

clippy_lints/src/default_trait_access.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty::TypeVariants;
 
 use crate::utils::{any_parent_is_automatically_derived, match_def_path, opt_def_id, paths, span_lint_and_sugg};

clippy_lints/src/derive.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty::{self, Ty};
 use rustc::hir::*;
 use syntax::codemap::Span;

clippy_lints/src/doc.rs

@@ -1,6 +1,7 @@
 use itertools::Itertools;
 use pulldown_cmark;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast;
 use syntax::codemap::{BytePos, Span};
 use syntax_pos::Pos;

clippy_lints/src/double_comparison.rs

@@ -2,6 +2,7 @@
 
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::codemap::Span;
 
 use crate::utils::{snippet, span_lint_and_sugg, SpanlessEq};

clippy_lints/src/double_parens.rs

@@ -1,5 +1,6 @@
 use syntax::ast::*;
 use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintContext, LintPass};
+use rustc::{declare_lint, lint_array};
 
 /// **What it does:** Checks for unnecessary double parentheses.
 ///

clippy_lints/src/drop_forget_ref.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty;
 use rustc::hir::*;
 use crate::utils::{is_copy, match_def_path, opt_def_id, paths, span_note_and_lint};

clippy_lints/src/duration_subsec.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::codemap::Spanned;
 
 use crate::consts::{constant, Constant};

clippy_lints/src/else_if_without_else.rs

@@ -1,6 +1,7 @@
 //! lint on if expressions with an else if, but without a final else branch
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast::*;
 
 use crate::utils::{in_external_macro, span_lint_and_sugg};

clippy_lints/src/empty_enum.rs

@@ -1,6 +1,7 @@
 //! lint when there is an enum with no variants
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use crate::utils::span_lint_and_then;
 

clippy_lints/src/entry.rs

@@ -1,6 +1,8 @@
 use rustc::hir::*;
 use rustc::hir::intravisit::{walk_expr, NestedVisitorMap, Visitor};
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::codemap::Span;
 use crate::utils::SpanlessEq;
 use crate::utils::{get_item_name, match_type, paths, snippet, span_lint_and_then, walk_ptrs_ty};

clippy_lints/src/enum_clike.rs

@@ -2,6 +2,7 @@
 //! don't fit into an `i32`
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use rustc::ty;
 use rustc::ty::subst::Substs;

clippy_lints/src/enum_glob_use.rs

@@ -3,6 +3,7 @@
 use rustc::hir::*;
 use rustc::hir::def::Def;
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::{declare_lint, lint_array};
 use syntax::ast::NodeId;
 use syntax::codemap::Span;
 use crate::utils::span_lint;

clippy_lints/src/enum_variants.rs

@@ -1,6 +1,7 @@
 //! lint on enum variants that are prefixed or suffixed by the same characters
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast::*;
 use syntax::codemap::Span;
 use syntax::symbol::LocalInternedString;

clippy_lints/src/eq_op.rs

@@ -1,5 +1,6 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use crate::utils::{in_macro, implements_trait, is_copy, multispan_sugg, snippet, span_lint, span_lint_and_then, SpanlessEq};
 
 /// **What it does:** Checks for equal operands to comparison, logical and

clippy_lints/src/erasing_op.rs

@@ -1,6 +1,7 @@
 use crate::consts::{constant_simple, Constant};
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::codemap::Span;
 use crate::utils::{in_macro, span_lint};
 

clippy_lints/src/escape.rs

@@ -2,6 +2,7 @@
 use rustc::hir::intravisit as visit;
 use rustc::hir::map::Node::{NodeExpr, NodeStmt};
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::middle::expr_use_visitor::*;
 use rustc::middle::mem_categorization::{cmt_, Categorization};
 use rustc::ty::{self, Ty};

clippy_lints/src/eta_reduction.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::ty;
 use rustc::hir::*;
 use crate::utils::{is_adjusted, iter_input_pats, snippet_opt, span_lint_and_then};

clippy_lints/src/eval_order_dependence.rs

@@ -2,6 +2,8 @@
 use rustc::hir::*;
 use rustc::ty;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::ast;
 use crate::utils::{get_parent_expr, span_lint, span_note_and_lint};
 

clippy_lints/src/excessive_precision.rs

@@ -1,5 +1,7 @@
 use rustc::hir;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty::TypeVariants;
 use std::f32;
 use std::f64;

clippy_lints/src/explicit_write.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use crate::utils::{is_expn_of, match_def_path, resolve_node, span_lint};
 use crate::utils::opt_def_id;
 

clippy_lints/src/fallible_impl_from.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir;
 use rustc::ty;
 use syntax_pos::Span;

clippy_lints/src/format.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty;
 use syntax::ast::LitKind;
 use syntax_pos::Span;

clippy_lints/src/formatting.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast;
 use crate::utils::{differing_macro_contexts, in_macro, snippet_opt, span_note_and_lint};
 use syntax::ptr::P;

clippy_lints/src/functions.rs

@@ -1,6 +1,8 @@
+use matches::matches;
 use rustc::hir::intravisit;
 use rustc::hir;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::ty;
 use rustc::hir::def::Def;
 use std::collections::HashSet;

clippy_lints/src/identity_conversion.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use syntax::ast::NodeId;
 use crate::utils::{in_macro, match_def_path, match_trait_method, same_tys, snippet, span_lint_and_then};

clippy_lints/src/identity_op.rs

@@ -1,6 +1,7 @@
 use crate::consts::{constant_simple, Constant};
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::codemap::Span;
 use crate::utils::{in_macro, snippet, span_lint, unsext, clip};
 use rustc::ty;

clippy_lints/src/if_let_redundant_pattern_matching.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use crate::utils::{match_qpath, paths, snippet, span_lint_and_then};
 

clippy_lints/src/if_not_else.rs

@@ -2,6 +2,7 @@
 //! on the condition
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast::*;
 
 use crate::utils::{in_external_macro, span_help_and_lint};

clippy_lints/src/indexing_slicing.rs

@@ -6,6 +6,7 @@
 use crate::utils::higher::Range;
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::ty;
 use syntax::ast::RangeLimits;
 

clippy_lints/src/infallible_destructuring_match.rs

@@ -1,6 +1,8 @@
 use super::utils::{get_arg_name, match_var, remove_blocks, snippet, span_lint_and_sugg};
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 
 /// **What it does:** Checks for matches being used to destructure a single-variant enum
 /// or tuple struct where a `let` will suffice.

clippy_lints/src/infinite_iter.rs

@@ -1,5 +1,6 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use crate::utils::{get_trait_def_id, higher, implements_trait, match_qpath, paths, span_lint};
 
 /// **What it does:** Checks for iteration that is guaranteed to be infinite.

clippy_lints/src/inherent_impl.rs

@@ -2,6 +2,7 @@
 
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use std::collections::HashMap;
 use std::default::Default;
 use syntax_pos::Span;

clippy_lints/src/inline_fn_without_body.rs

@@ -1,6 +1,7 @@
 //! checks for `#[inline]` on trait methods without bodies
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use syntax::ast::{Attribute, Name};
 use crate::utils::span_lint_and_then;

clippy_lints/src/int_plus_one.rs

@@ -1,6 +1,7 @@
 //! lint on blocks unnecessarily using >= with a + 1 or - 1
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast::*;
 
 use crate::utils::{snippet_opt, span_lint_and_then};

clippy_lints/src/invalid_ref.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty;
 use rustc::hir::*;
 use crate::utils::{match_def_path, opt_def_id, paths, span_help_and_lint};

clippy_lints/src/items_after_statements.rs

@@ -1,6 +1,8 @@
 //! lint when items are used after statements
 
+use matches::matches;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast::*;
 use crate::utils::{in_macro, span_lint};
 

clippy_lints/src/large_enum_variant.rs

@@ -1,6 +1,7 @@
 //! lint when there is a large size difference between variants on an enum
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use crate::utils::{snippet_opt, span_lint_and_then};
 use rustc::ty::layout::LayoutOf;

clippy_lints/src/len_zero.rs

@@ -1,6 +1,7 @@
 use rustc::hir::def_id::DefId;
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::ty;
 use std::collections::HashSet;
 use syntax::ast::{Lit, LitKind, Name};

clippy_lints/src/let_if_seq.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir;
 use rustc::hir::BindingAnnotation;
 use rustc::hir::def::Def;

clippy_lints/src/lib.rs

@@ -13,25 +13,10 @@
 #![feature(macro_at_most_once_rep)]
 #![feature(rust_2018_preview)]
 #![warn(rust_2018_idioms)]
-#![allow(macro_use_extern_crate)]
-
-#[macro_use]
-extern crate rustc;
 
 use toml;
 use rustc_plugin;
 
-#[macro_use]
-extern crate matches as matches_macro;
-
-#[macro_use]
-extern crate serde_derive;
-
-#[macro_use]
-extern crate lazy_static;
-
-#[macro_use]
-extern crate if_chain;
 
 macro_rules! declare_clippy_lint {
     { pub $name:tt, style, $description:tt } => {

clippy_lints/src/lifetimes.rs

@@ -1,5 +1,7 @@
 use crate::reexport::*;
+use matches::matches;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::def::Def;
 use rustc::hir::*;
 use rustc::hir::intravisit::*;

clippy_lints/src/literal_representation.rs

@@ -2,6 +2,8 @@
 //! floating-point literal expressions.
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::ast::*;
 use syntax_pos;
 use crate::utils::{in_external_macro, snippet_opt, span_lint_and_sugg};

clippy_lints/src/loops.rs

@@ -6,6 +6,8 @@
 use rustc::hir::intravisit::{walk_block, walk_decl, walk_expr, walk_pat, walk_stmt, NestedVisitorMap, Visitor};
 use rustc::hir::map::Node::{NodeBlock, NodeExpr, NodeStmt};
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::middle::region;
 // use rustc::middle::region::CodeExtent;
 use rustc::middle::expr_use_visitor::*;

clippy_lints/src/map_clone.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir::*;
 use rustc::ty;
 use syntax::ast;

clippy_lints/src/map_unit_fn.rs

@@ -1,5 +1,7 @@
 use rustc::hir;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty;
 use rustc_errors::Applicability;
 use syntax::codemap::Span;

clippy_lints/src/matches.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty::{self, Ty};
 use std::cmp::Ordering;
 use std::collections::Bound;

clippy_lints/src/mem_forget.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::{Expr, ExprKind};
 use crate::utils::{match_def_path, opt_def_id, paths, span_lint};
 

clippy_lints/src/methods.rs

@@ -1,5 +1,8 @@
+use matches::matches;
 use rustc::hir;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty::{self, Ty};
 use rustc::hir::def::Def;
 use std::borrow::Cow;

clippy_lints/src/minmax.rs

@@ -2,6 +2,7 @@
 use crate::utils::{match_def_path, opt_def_id, paths, span_lint};
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use std::cmp::Ordering;
 
 /// **What it does:** Checks for expressions where `std::cmp::min` and `max` are

clippy_lints/src/misc.rs

@@ -1,7 +1,10 @@
 use crate::reexport::*;
+use matches::matches;
 use rustc::hir::*;
 use rustc::hir::intravisit::FnKind;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty;
 use syntax::codemap::{ExpnFormat, Span};
 use crate::utils::{get_item_name, get_parent_expr, implements_trait, in_constant, in_macro, is_integer_literal,

clippy_lints/src/misc_early.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use std::collections::HashMap;
 use std::char;
 use syntax::ast::*;

clippy_lints/src/missing_doc.rs

@@ -20,6 +20,7 @@
 
 use rustc::hir;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::ty;
 use syntax::ast;
 use syntax::attr;

clippy_lints/src/missing_inline.rs

@@ -11,6 +11,7 @@
 
 use rustc::hir;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast;
 use syntax::codemap::Span;
 

clippy_lints/src/multiple_crate_versions.rs

@@ -1,6 +1,7 @@
 //! lint on multiple versions of a crate being used
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast::*;
 
 use cargo_metadata;

clippy_lints/src/mut_mut.rs

@@ -1,6 +1,7 @@
 use rustc::hir;
 use rustc::hir::intravisit;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::ty;
 use crate::utils::{higher, in_external_macro, span_lint};
 

clippy_lints/src/mut_reference.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::ty::{self, Ty};
 use rustc::ty::subst::Subst;
 use rustc::hir::*;

clippy_lints/src/mutex_atomic.rs

@@ -3,6 +3,7 @@
 //! This lint is **warn** by default
 
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::{declare_lint, lint_array};
 use rustc::ty::{self, Ty};
 use rustc::hir::Expr;
 use syntax::ast;

clippy_lints/src/needless_bool.rs

@@ -3,6 +3,7 @@
 //! This lint is **warn** by default
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use syntax::ast::LitKind;
 use syntax::codemap::Spanned;

clippy_lints/src/needless_borrow.rs

@@ -3,6 +3,8 @@
 //! This lint is **warn** by default
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir::{BindingAnnotation, Expr, ExprKind, MutImmutable, Pat, PatKind};
 use rustc::ty;
 use rustc::ty::adjustment::{Adjust, Adjustment};

clippy_lints/src/needless_borrowed_ref.rs

@@ -3,6 +3,8 @@
 //! This lint is **warn** by default
 
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir::{BindingAnnotation, MutImmutable, Pat, PatKind};
 use crate::utils::{in_macro, snippet, span_lint_and_then};
 

clippy_lints/src/needless_continue.rs

@@ -28,6 +28,7 @@
 //!
 //! This lint is **warn** by default.
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast;
 use syntax::codemap::{original_sp, DUMMY_SP};
 use std::borrow::Cow;

clippy_lints/src/needless_pass_by_value.rs

@@ -1,7 +1,10 @@
+use matches::matches;
 use rustc::hir::*;
 use rustc::hir::map::*;
 use rustc::hir::intravisit::FnKind;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty::{self, RegionKind, TypeFoldable};
 use rustc::traits;
 use rustc::middle::expr_use_visitor as euv;

clippy_lints/src/needless_update.rs

@@ -1,4 +1,5 @@
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::{declare_lint, lint_array};
 use rustc::ty;
 use rustc::hir::{Expr, ExprKind};
 use crate::utils::span_lint;

clippy_lints/src/neg_cmp_op_on_partial_ord.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 
 use crate::utils::{self, paths, span_lint, in_external_macro};
 

clippy_lints/src/neg_multiply.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::codemap::{Span, Spanned};
 
 use crate::consts::{self, Constant};

clippy_lints/src/new_without_default.rs

@@ -1,6 +1,8 @@
 use rustc::hir::def_id::DefId;
 use rustc::hir;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty::{self, Ty};
 use syntax::codemap::Span;
 use crate::utils::paths;

clippy_lints/src/no_effect.rs

@@ -1,4 +1,5 @@
 use rustc::lint::{LateContext, LateLintPass, LintArray, LintPass};
+use rustc::{declare_lint, lint_array};
 use rustc::hir::def::Def;
 use rustc::hir::{BinOpKind, BlockCheckMode, Expr, ExprKind, Stmt, StmtKind, UnsafeSource};
 use crate::utils::{has_drop, in_macro, snippet_opt, span_lint, span_lint_and_sugg};

clippy_lints/src/non_copy_const.rs

@@ -3,6 +3,7 @@
 //! This lint is **deny** by default.
 
 use rustc::lint::{LateContext, LateLintPass, Lint, LintArray, LintPass};
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use rustc::hir::def::Def;
 use rustc::ty::{self, TypeFlags};

clippy_lints/src/non_expressive_names.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::codemap::Span;
 use syntax::symbol::LocalInternedString;
 use syntax::ast::*;

clippy_lints/src/ok_if_let.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir::*;
 use crate::utils::{match_type, method_chain_args, paths, snippet, span_help_and_lint};
 

clippy_lints/src/open_options.rs

@@ -1,5 +1,6 @@
 use rustc::hir::{Expr, ExprKind};
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast::LitKind;
 use syntax::codemap::{Span, Spanned};
 use crate::utils::{match_type, paths, span_lint, walk_ptrs_ty};

clippy_lints/src/overflow_check_conditional.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir::*;
 use crate::utils::{span_lint, SpanlessEq};
 

clippy_lints/src/panic_unimplemented.rs

@@ -1,5 +1,7 @@
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::ast::LitKind;
 use syntax::ptr::P;
 use syntax::ext::quote::rt::Span;

clippy_lints/src/partialeq_ne_impl.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir::*;
 use crate::utils::{is_automatically_derived, span_lint};
 

clippy_lints/src/precedence.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use syntax::ast::*;
 use syntax::codemap::Spanned;
 use crate::utils::{in_macro, snippet, span_lint_and_sugg};

clippy_lints/src/ptr.rs

@@ -5,6 +5,8 @@
 use rustc::hir::map::NodeItem;
 use rustc::hir::QPath;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::ty;
 use syntax::ast::NodeId;
 use syntax::codemap::Span;

clippy_lints/src/question_mark.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir::*;
 use rustc::hir::def::Def;
 use crate::utils::sugg::Sugg;

clippy_lints/src/ranges.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir::*;
 use syntax::ast::RangeLimits;
 use syntax::codemap::Spanned;

clippy_lints/src/redundant_field_names.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use crate::utils::{in_macro, is_range_expression, match_var, span_lint_and_sugg};
 

clippy_lints/src/reference.rs

@@ -1,5 +1,7 @@
 use syntax::ast::{Expr, ExprKind, UnOp};
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use crate::utils::{snippet, span_lint_and_sugg};
 
 /// **What it does:** Checks for usage of `*&` and `*&mut` in expressions.

clippy_lints/src/regex.rs

@@ -1,6 +1,8 @@
 use regex_syntax;
 use rustc::hir::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use std::collections::HashSet;
 use syntax::ast::{LitKind, NodeId, StrStyle};
 use syntax::codemap::{BytePos, Span};

clippy_lints/src/replace_consts.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use rustc::hir;
 use rustc::hir::def::Def;
 use crate::utils::{match_def_path, span_lint_and_sugg};

clippy_lints/src/returns.rs

@@ -1,4 +1,6 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
+use if_chain::if_chain;
 use syntax::ast;
 use syntax::codemap::Span;
 use syntax::visit::FnKind;

clippy_lints/src/serde_api.rs

@@ -1,4 +1,5 @@
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use crate::utils::{get_trait_def_id, paths, span_lint};
 

clippy_lints/src/shadow.rs

@@ -1,5 +1,6 @@
 use crate::reexport::*;
 use rustc::lint::*;
+use rustc::{declare_lint, lint_array};
 use rustc::hir::*;
 use rustc::hir::intravisit::FnKind;
 use rustc::ty;