From e5dc347ccfe92d9d1dd23f0b4a257a1cb3532462 Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Fri, 31 Jan 2014 16:10:06 -0800
Subject: [PATCH] libsyntax: Remove the `interner_get` function and all uses

---
 src/libsyntax/ast.rs          |  7 ++++---
 src/libsyntax/ast_util.rs     |  5 ++++-
 src/libsyntax/parse/parser.rs |  3 ++-
 src/libsyntax/parse/token.rs  | 27 ---------------------------
 src/libsyntax/print/pprust.rs |  5 +++--
 5 files changed, 13 insertions(+), 34 deletions(-)

diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index a8bbdbd60d3..fd8e9dbfa67 100644
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -14,8 +14,8 @@ use codemap::{Span, Spanned, DUMMY_SP};
 use abi::AbiSet;
 use ast_util;
 use opt_vec::OptVec;
-use parse::token::{InternedString, interner_get, special_idents};
-use parse::token::{str_to_ident};
+use parse::token::{InternedString, special_idents, str_to_ident};
+use parse::token;
 
 use std::cell::RefCell;
 use std::hashmap::HashMap;
@@ -126,7 +126,8 @@ pub type Mrk = u32;
 
 impl<S:Encoder> Encodable<S> for Ident {
     fn encode(&self, s: &mut S) {
-        s.emit_str(interner_get(self.name));
+        let string = token::get_ident(self.name);
+        s.emit_str(string.get());
     }
 }
 
diff --git a/src/libsyntax/ast_util.rs b/src/libsyntax/ast_util.rs
index 405de5c5542..afedb62105b 100644
--- a/src/libsyntax/ast_util.rs
+++ b/src/libsyntax/ast_util.rs
@@ -25,7 +25,10 @@ use std::num;
 
 pub fn path_name_i(idents: &[Ident]) -> ~str {
     // FIXME: Bad copies (#2543 -- same for everything else that says "bad")
-    idents.map(|i| token::interner_get(i.name)).connect("::")
+    idents.map(|i| {
+        let string = token::get_ident(i.name);
+        string.get().to_str()
+    }).connect("::")
 }
 
 // totally scary function: ignores all but the last element, should have
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index 34080ffb624..86913711801 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -4178,7 +4178,8 @@ impl Parser {
                 outer_attrs, "path") {
             Some(d) => dir_path.join(d),
             None => {
-                let mod_name = token::interner_get(id.name).to_owned();
+                let mod_string = token::get_ident(id.name);
+                let mod_name = mod_string.get().to_owned();
                 let default_path_str = mod_name + ".rs";
                 let secondary_path_str = mod_name + "/mod.rs";
                 let default_path = dir_path.join(default_path_str.as_slice());
diff --git a/src/libsyntax/parse/token.rs b/src/libsyntax/parse/token.rs
index 2c57a4effd5..806c84c5553 100644
--- a/src/libsyntax/parse/token.rs
+++ b/src/libsyntax/parse/token.rs
@@ -651,11 +651,6 @@ pub fn gensym(str : &str) -> Name {
     interner.gensym(str)
 }
 
-// map an interned representation back to a string
-pub fn interner_get(name : Name) -> @str {
-    get_ident_interner().get(name)
-}
-
 // maps a string to an identifier with an empty syntax context
 pub fn str_to_ident(str : &str) -> ast::Ident {
     ast::Ident::new(intern(str))
@@ -679,28 +674,6 @@ pub fn fresh_name(src : &ast::Ident) -> Name {
     gensym(format!("{}_{}",ident_to_str(src),num))*/
 }
 
-// it looks like there oughta be a str_ptr_eq fn, but no one bothered to implement it?
-
-// determine whether two @str values are pointer-equal
-pub fn str_ptr_eq(a : @str, b : @str) -> bool {
-    unsafe {
-        let p : uint = cast::transmute(a);
-        let q : uint = cast::transmute(b);
-        let result = p == q;
-        // got to transmute them back, to make sure the ref count is correct:
-        let _junk1 : @str = cast::transmute(p);
-        let _junk2 : @str = cast::transmute(q);
-        result
-    }
-}
-
-// return true when two identifiers refer (through the intern table) to the same ptr_eq
-// string. This is used to compare identifiers in places where hygienic comparison is
-// not wanted (i.e. not lexical vars).
-pub fn ident_spelling_eq(a : &ast::Ident, b : &ast::Ident) -> bool {
-    str_ptr_eq(interner_get(a.name),interner_get(b.name))
-}
-
 // create a fresh mark.
 pub fn fresh_mark() -> Mrk {
     gensym("mark")
diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs
index 93d912e7522..2e20560b9ca 100644
--- a/src/libsyntax/print/pprust.rs
+++ b/src/libsyntax/print/pprust.rs
@@ -19,7 +19,7 @@ use codemap::{CodeMap, BytePos};
 use codemap;
 use diagnostic;
 use parse::classify::expr_is_simple_block;
-use parse::token::{IdentInterner, interner_get};
+use parse::token::IdentInterner;
 use parse::{comments, token};
 use parse;
 use print::pp::{break_offset, word, space, zerobreak, hardbreak};
@@ -1544,7 +1544,8 @@ pub fn print_ident(s: &mut State, ident: ast::Ident) {
 }
 
 pub fn print_name(s: &mut State, name: ast::Name) {
-    word(&mut s.s, interner_get(name));
+    let string = token::get_ident(name);
+    word(&mut s.s, string.get());
 }
 
 pub fn print_for_decl(s: &mut State, loc: &ast::Local, coll: &ast::Expr) {