Rollup merge of #65465 - Centril:split-syntax-1, r=petrochenkov

Move syntax::ext to a syntax_expand and refactor some attribute logic

Part of https://github.com/rust-lang/rust/pull/65324.

r? @petrochenkov

7 files changed, 18 insertions, 19 deletions

diff --git a/src/librustc_resolve/Cargo.toml b/src/librustc_resolve/Cargo.toml
index 936e72ef2c5..06bf3085989 100644
--- a/src/librustc_resolve/Cargo.toml
+++ b/src/librustc_resolve/Cargo.toml
@@ -14,6 +14,7 @@ doctest = false
 bitflags = "1.0"
 log = "0.4"
 syntax = { path = "../libsyntax" }
+syntax_expand = { path = "../libsyntax_expand" }
 rustc = { path = "../librustc" }
 arena = { path = "../libarena" }
 errors = { path = "../librustc_errors", package = "rustc_errors" }
diff --git a/src/librustc_resolve/build_reduced_graph.rs b/src/librustc_resolve/build_reduced_graph.rs
index 0d5361fe8d8..eadae52c250 100644
--- a/src/librustc_resolve/build_reduced_graph.rs
+++ b/src/librustc_resolve/build_reduced_graph.rs
@@ -32,9 +32,9 @@ use syntax::attr;
 
 use syntax::ast::{self, Block, ForeignItem, ForeignItemKind, Item, ItemKind, NodeId};
 use syntax::ast::{MetaItemKind, StmtKind, TraitItem, TraitItemKind};
-use syntax::ext::base::{MacroKind, SyntaxExtension};
-use syntax::ext::expand::AstFragment;
-use syntax::ext::hygiene::ExpnId;
+use syntax_expand::base::{MacroKind, SyntaxExtension};
+use syntax_expand::expand::AstFragment;
+use syntax_expand::hygiene::ExpnId;
 use syntax::feature_gate::is_builtin_attr;
 use syntax::parse::token::{self, Token};
 use syntax::print::pprust;
diff --git a/src/librustc_resolve/diagnostics.rs b/src/librustc_resolve/diagnostics.rs
index de875808670..5647d5b2794 100644
--- a/src/librustc_resolve/diagnostics.rs
+++ b/src/librustc_resolve/diagnostics.rs
@@ -10,7 +10,7 @@ use rustc::session::Session;
 use rustc::ty::{self, DefIdTree};
 use rustc::util::nodemap::FxHashSet;
 use syntax::ast::{self, Ident, Path};
-use syntax::ext::base::MacroKind;
+use syntax_expand::base::MacroKind;
 use syntax::feature_gate::BUILTIN_ATTRIBUTES;
 use syntax::source_map::SourceMap;
 use syntax::struct_span_err;
diff --git a/src/librustc_resolve/late/diagnostics.rs b/src/librustc_resolve/late/diagnostics.rs
index ace9903a835..412734eabe0 100644
--- a/src/librustc_resolve/late/diagnostics.rs
+++ b/src/librustc_resolve/late/diagnostics.rs
@@ -13,7 +13,7 @@ use rustc::hir::PrimTy;
 use rustc::session::config::nightly_options;
 use rustc::util::nodemap::FxHashSet;
 use syntax::ast::{self, Expr, ExprKind, Ident, NodeId, Path, Ty, TyKind};
-use syntax::ext::base::MacroKind;
+use syntax_expand::base::MacroKind;
 use syntax::symbol::kw;
 use syntax::util::lev_distance::find_best_match_for_name;
 use syntax_pos::Span;
diff --git a/src/librustc_resolve/lib.rs b/src/librustc_resolve/lib.rs
index e5b0ef89a41..17d8f0f211a 100644
--- a/src/librustc_resolve/lib.rs
+++ b/src/librustc_resolve/lib.rs
@@ -35,18 +35,16 @@ use rustc::span_bug;
 use rustc_metadata::creader::CrateLoader;
 use rustc_metadata::cstore::CStore;
 
-use syntax::ext::hygiene::{ExpnId, Transparency, SyntaxContext};
+use syntax_expand::hygiene::{ExpnId, Transparency, SyntaxContext};
+use syntax_expand::base::{SyntaxExtension, MacroKind, SpecialDerives};
+use syntax::{struct_span_err, unwrap_or};
+use syntax::attr;
 use syntax::ast::{self, Name, NodeId, Ident, FloatTy, IntTy, UintTy};
-use syntax::ext::base::{SyntaxExtension, MacroKind, SpecialDerives};
+use syntax::ast::{ItemKind, Path, CRATE_NODE_ID, Crate};
 use syntax::print::pprust;
 use syntax::symbol::{kw, sym};
-
-use syntax::visit::{self, Visitor};
-use syntax::attr;
-use syntax::ast::{CRATE_NODE_ID, Crate};
-use syntax::ast::{ItemKind, Path};
-use syntax::{struct_span_err, unwrap_or};
 use syntax::source_map::Spanned;
+use syntax::visit::{self, Visitor};
 
 use syntax_pos::{Span, DUMMY_SP};
 use errors::{Applicability, DiagnosticBuilder};
diff --git a/src/librustc_resolve/macros.rs b/src/librustc_resolve/macros.rs
index 49186088fa0..c91a0b2ed98 100644
--- a/src/librustc_resolve/macros.rs
+++ b/src/librustc_resolve/macros.rs
@@ -14,11 +14,11 @@ use rustc::{ty, lint, span_bug};
 use syntax::ast::{self, NodeId, Ident};
 use syntax::attr::StabilityLevel;
 use syntax::edition::Edition;
-use syntax::ext::base::{self, InvocationRes, Indeterminate, SpecialDerives};
-use syntax::ext::base::{MacroKind, SyntaxExtension};
-use syntax::ext::expand::{AstFragment, AstFragmentKind, Invocation, InvocationKind};
-use syntax::ext::hygiene::{self, ExpnId, ExpnData, ExpnKind};
-use syntax::ext::compile_declarative_macro;
+use syntax_expand::base::{self, InvocationRes, Indeterminate, SpecialDerives};
+use syntax_expand::base::{MacroKind, SyntaxExtension};
+use syntax_expand::expand::{AstFragment, AstFragmentKind, Invocation, InvocationKind};
+use syntax_expand::hygiene::{self, ExpnId, ExpnData, ExpnKind};
+use syntax_expand::compile_declarative_macro;
 use syntax::feature_gate::{emit_feature_err, is_builtin_attr_name};
 use syntax::feature_gate::GateIssue;
 use syntax::print::pprust;
diff --git a/src/librustc_resolve/resolve_imports.rs b/src/librustc_resolve/resolve_imports.rs
index 56fd2da2576..424bf31a785 100644
--- a/src/librustc_resolve/resolve_imports.rs
+++ b/src/librustc_resolve/resolve_imports.rs
@@ -28,7 +28,7 @@ use rustc::util::nodemap::FxHashSet;
 use rustc::{bug, span_bug};
 
 use syntax::ast::{Ident, Name, NodeId, CRATE_NODE_ID};
-use syntax::ext::hygiene::ExpnId;
+use syntax_expand::hygiene::ExpnId;
 use syntax::symbol::kw;
 use syntax::util::lev_distance::find_best_match_for_name;
 use syntax::{struct_span_err, unwrap_or};