rustc, rustc_passes: don't depend on syntax_expand.

This is done by moving some data definitions to syntax::expand.

Author: Centril

Cargo.lock

@@ -3135,7 +3135,6 @@ dependencies = [
  "serialize",
  "smallvec",
  "syntax",
- "syntax_expand",
  "syntax_pos",
 ]
 
@@ -3451,7 +3450,6 @@ dependencies = [
  "rustc_target",
  "serialize",
  "syntax",
- "syntax_expand",
  "syntax_pos",
  "tempfile",
 ]
@@ -3707,7 +3705,6 @@ dependencies = [
  "rustc_index",
  "rustc_target",
  "syntax",
- "syntax_expand",
  "syntax_pos",
 ]
 

src/librustc/Cargo.toml

@@ -29,7 +29,6 @@ rustc_index = { path = "../librustc_index" }
 errors = { path = "../librustc_errors", package = "rustc_errors" }
 rustc_serialize = { path = "../libserialize", package = "serialize" }
 syntax = { path = "../libsyntax" }
-syntax_expand = { path = "../libsyntax_expand" }
 syntax_pos = { path = "../libsyntax_pos" }
 backtrace = "0.3.3"
 parking_lot = "0.9"

src/librustc/hir/def.rs

@@ -6,8 +6,8 @@ use crate::ty;
 use crate::util::nodemap::DefIdMap;
 
 use syntax::ast;
-use syntax_expand::base::MacroKind;
 use syntax::ast::NodeId;
+use syntax_pos::hygiene::MacroKind;
 use syntax_pos::Span;
 use rustc_macros::HashStable;
 

src/librustc/hir/lowering.rs

@@ -64,7 +64,7 @@ use syntax::ast;
 use syntax::ptr::P as AstP;
 use syntax::ast::*;
 use syntax::errors;
-use syntax_expand::base::SpecialDerives;
+use syntax::expand::SpecialDerives;
 use syntax::print::pprust;
 use syntax::parse::token::{self, Nonterminal, Token};
 use syntax::tokenstream::{TokenStream, TokenTree};

src/librustc/hir/lowering/item.rs

@@ -18,7 +18,7 @@ use smallvec::SmallVec;
 use syntax::attr;
 use syntax::ast::*;
 use syntax::visit::{self, Visitor};
-use syntax_expand::base::SpecialDerives;
+use syntax::expand::SpecialDerives;
 use syntax::source_map::{respan, DesugaringKind, Spanned};
 use syntax::symbol::{kw, sym};
 use syntax_pos::Span;

src/librustc/hir/map/def_collector.rs

@@ -2,10 +2,10 @@ use crate::hir::map::definitions::*;
 use crate::hir::def_id::DefIndex;
 
 use syntax::ast::*;
-use syntax_expand::hygiene::ExpnId;
 use syntax::visit;
 use syntax::symbol::{kw, sym};
 use syntax::parse::token::{self, Token};
+use syntax_pos::hygiene::ExpnId;
 use syntax_pos::Span;
 
 /// Creates `DefId`s for nodes in the AST.

src/librustc/hir/map/definitions.rs

@@ -17,8 +17,8 @@ use std::borrow::Borrow;
 use std::fmt::Write;
 use std::hash::Hash;
 use syntax::ast;
-use syntax_expand::hygiene::ExpnId;
-use syntax::symbol::{Symbol, sym};
+use syntax_pos::symbol::{Symbol, sym};
+use syntax_pos::hygiene::ExpnId;
 use syntax_pos::{Span, DUMMY_SP};
 
 /// The `DefPathTable` maps `DefIndex`es to `DefKey`s and vice versa.

src/librustc/hir/map/mod.rs

@@ -20,7 +20,7 @@ use rustc_data_structures::svh::Svh;
 use rustc_index::vec::IndexVec;
 use syntax::ast::{self, Name, NodeId};
 use syntax::source_map::Spanned;
-use syntax_expand::base::MacroKind;
+use syntax_pos::hygiene::MacroKind;
 use syntax_pos::{Span, DUMMY_SP};
 
 pub mod blocks;

src/librustc/ich/hcx.rs

@@ -13,11 +13,10 @@ use std::cell::RefCell;
 
 use syntax::ast;
 use syntax::source_map::SourceMap;
-use syntax_expand::hygiene::SyntaxContext;
 use syntax::symbol::Symbol;
 use syntax::tokenstream::DelimSpan;
 use syntax_pos::{Span, DUMMY_SP};
-use syntax_pos::hygiene;
+use syntax_pos::hygiene::{self, SyntaxContext};
 
 use rustc_data_structures::stable_hasher::{
     HashStable, StableHasher, ToStableHashKey,

src/librustc/ich/impls_syntax.rs

@@ -60,7 +60,7 @@ impl_stable_hash_for!(enum ::syntax::ast::AsmDialect {
     Intel
 });
 
-impl_stable_hash_for!(enum ::syntax_expand::base::MacroKind {
+impl_stable_hash_for!(enum ::syntax_pos::hygiene::MacroKind {
     Bang,
     Attr,
     Derive,