Rename mtwt to hygiene

Author: jseyfried

src/librustc/session/config.rs

@@ -735,8 +735,8 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
           "for every macro invocation, print its name and arguments"),
     enable_nonzeroing_move_hints: bool = (false, parse_bool,
           "force nonzeroing move optimization on"),
-    keep_mtwt_tables: bool = (false, parse_bool,
-          "don't clear the resolution tables after analysis"),
+    keep_hygiene_data: bool = (false, parse_bool,
+          "don't clear the hygiene data after analysis"),
     keep_ast: bool = (false, parse_bool,
           "keep the AST after lowering it to HIR"),
     show_span: Option<String> = (None, parse_opt_string,

src/librustc_driver/driver.rs

@@ -236,8 +236,8 @@ pub fn compile_input(sess: &Session,
     Ok(())
 }
 
-fn keep_mtwt_tables(sess: &Session) -> bool {
-    sess.opts.debugging_opts.keep_mtwt_tables
+fn keep_hygiene_data(sess: &Session) -> bool {
+    sess.opts.debugging_opts.keep_hygiene_data
 }
 
 fn keep_ast(sess: &Session) -> bool {
@@ -479,7 +479,7 @@ pub fn phase_1_parse_input<'a>(sess: &'a Session,
                                input: &Input)
                                -> PResult<'a, ast::Crate> {
     // These may be left in an incoherent state after a previous compile.
-    syntax::ext::mtwt::reset_hygiene_data();
+    syntax::ext::hygiene::reset_hygiene_data();
     // `clear_ident_interner` can be used to free memory, but it does not restore the initial state.
     token::reset_ident_interner();
     let continue_after_error = sess.opts.continue_parse_after_error;
@@ -760,9 +760,9 @@ pub fn phase_2_configure_and_expand<'a, F>(sess: &Session,
         hir_map::Forest::new(lower_crate(sess, &krate, &mut resolver), &sess.dep_graph)
     });
 
-    // Discard MTWT tables that aren't required past lowering to HIR.
-    if !keep_mtwt_tables(sess) {
-        syntax::ext::mtwt::reset_hygiene_data();
+    // Discard hygiene data, which isn't required past lowering to HIR.
+    if !keep_hygiene_data(sess) {
+        syntax::ext::hygiene::reset_hygiene_data();
     }
 
     Ok(ExpansionResult {

src/librustc_resolve/assign_ids.rs

@@ -11,7 +11,7 @@
 use Resolver;
 use rustc::session::Session;
 use syntax::ast;
-use syntax::ext::mtwt::Mark;
+use syntax::ext::hygiene::Mark;
 use syntax::fold::{self, Folder};
 use syntax::ptr::P;
 use syntax::util::move_map::MoveMap;

src/librustc_resolve/lib.rs

@@ -53,7 +53,7 @@ use rustc::ty::subst::{ParamSpace, FnSpace, TypeSpace};
 use rustc::hir::{Freevar, FreevarMap, TraitCandidate, TraitMap, GlobMap};
 use rustc::util::nodemap::{NodeMap, NodeSet, FnvHashMap, FnvHashSet};
 
-use syntax::ext::mtwt::Mark;
+use syntax::ext::hygiene::Mark;
 use syntax::ast::{self, FloatTy};
 use syntax::ast::{CRATE_NODE_ID, Name, NodeId, CrateNum, IntTy, UintTy};
 use syntax::parse::token::{self, keywords};

src/libsyntax/ast.rs

@@ -19,7 +19,7 @@ pub use util::ThinVec;
 use syntax_pos::{mk_sp, Span, DUMMY_SP, ExpnId};
 use codemap::{respan, Spanned};
 use abi::Abi;
-use ext::mtwt::SyntaxContext;
+use ext::hygiene::SyntaxContext;
 use parse::token::{self, keywords, InternedString};
 use print::pprust;
 use ptr::P;

src/libsyntax/ext/expand.rs

@@ -11,7 +11,7 @@
 use ast::{Block, Crate, Ident, Mac_, Name, PatKind};
 use ast::{MacStmtStyle, Stmt, StmtKind, ItemKind};
 use ast;
-use ext::mtwt::Mark;
+use ext::hygiene::Mark;
 use attr::{self, HasAttrs};
 use attr::AttrMetaMethods;
 use codemap::{dummy_spanned, ExpnInfo, NameAndSpan, MacroBang, MacroAttribute};

src/libsyntax/ext/mtwt.rs renamed to src/libsyntax/ext/hygiene.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Machinery for hygienic macros, as described in the MTWT[1] paper.
+//! Machinery for hygienic macros, inspired by the MTWT[1] paper.
 //!
 //! [1] Matthew Flatt, Ryan Culpepper, David Darais, and Robert Bruce Findler.
 //! 2012. *Macros that work together: Compile-time bindings, partial expansion,

src/libsyntax/lib.rs

@@ -127,7 +127,7 @@ pub mod ext {
     pub mod base;
     pub mod build;
     pub mod expand;
-    pub mod mtwt;
+    pub mod hygiene;
     pub mod quote;
     pub mod source_util;