move librustc/plugin to librustc_plugin

this is a [breaking-change] to all plugin authors - sorry

Author: arielb1

mk/crates.mk

@@ -56,7 +56,8 @@ TARGET_CRATES := libc std flate arena term \
 		 alloc_system
 RUSTC_CRATES := rustc rustc_typeck rustc_mir rustc_borrowck rustc_resolve rustc_driver \
                 rustc_trans rustc_back rustc_llvm rustc_privacy rustc_lint \
-                rustc_data_structures rustc_front rustc_platform_intrinsics
+                rustc_data_structures rustc_front rustc_platform_intrinsics \
+                rustc_plugin
 HOST_CRATES := syntax $(RUSTC_CRATES) rustdoc fmt_macros
 TOOLS := compiletest rustdoc rustc rustbook error-index-generator
 
@@ -94,14 +95,15 @@ DEPS_rustc_borrowck := rustc rustc_front log graphviz syntax
 DEPS_rustc_data_structures := std log serialize
 DEPS_rustc_driver := arena flate getopts graphviz libc rustc rustc_back rustc_borrowck \
                      rustc_typeck rustc_mir rustc_resolve log syntax serialize rustc_llvm \
-		             rustc_trans rustc_privacy rustc_lint rustc_front
+	             rustc_trans rustc_privacy rustc_lint rustc_front rustc_plugin
 
 DEPS_rustc_front := std syntax log serialize
 DEPS_rustc_lint := rustc log syntax
 DEPS_rustc_llvm := native:rustllvm libc std rustc_bitflags
 DEPS_rustc_mir := rustc rustc_front syntax
 DEPS_rustc_resolve := rustc rustc_front log syntax
 DEPS_rustc_platform_intrinsics := rustc rustc_llvm
+DEPS_rustc_plugin := rustc syntax
 DEPS_rustc_privacy := rustc rustc_front log syntax
 DEPS_rustc_trans := arena flate getopts graphviz libc rustc rustc_back rustc_mir \
                     log syntax serialize rustc_llvm rustc_front rustc_platform_intrinsics

src/doc/book/compiler-plugins.md

@@ -8,12 +8,12 @@ extend the compiler's behavior with new syntax extensions, lint checks, etc.
 A plugin is a dynamic library crate with a designated *registrar* function that
 registers extensions with `rustc`. Other crates can load these extensions using
 the crate attribute `#![plugin(...)]`.  See the
-[`rustc::plugin`](../rustc/plugin/index.html) documentation for more about the
+[`rustc_plugin`](../rustc_plugin/index.html) documentation for more about the
 mechanics of defining and loading a plugin.
 
 If present, arguments passed as `#![plugin(foo(... args ...))]` are not
 interpreted by rustc itself.  They are provided to the plugin through the
-`Registry`'s [`args` method](../rustc/plugin/registry/struct.Registry.html#method.args).
+`Registry`'s [`args` method](../rustc_plugin/registry/struct.Registry.html#method.args).
 
 In the vast majority of cases, a plugin should *only* be used through
 `#![plugin]` and not through an `extern crate` item.  Linking a plugin would
@@ -43,13 +43,14 @@ that implements Roman numeral integer literals.
 
 extern crate syntax;
 extern crate rustc;
+extern crate rustc_plugin;
 
 use syntax::codemap::Span;
 use syntax::parse::token;
 use syntax::ast::TokenTree;
 use syntax::ext::base::{ExtCtxt, MacResult, DummyResult, MacEager};
 use syntax::ext::build::AstBuilder;  // trait for expr_usize
-use rustc::plugin::Registry;
+use rustc_plugin::Registry;
 
 fn expand_rn(cx: &mut ExtCtxt, sp: Span, args: &[TokenTree])
         -> Box<MacResult + 'static> {
@@ -120,7 +121,7 @@ The advantages over a simple `fn(&str) -> u32` are:
 In addition to procedural macros, you can define new
 [`derive`](../reference.html#derive)-like attributes and other kinds of
 extensions.  See
-[`Registry::register_syntax_extension`](../rustc/plugin/registry/struct.Registry.html#method.register_syntax_extension)
+[`Registry::register_syntax_extension`](../rustc_plugin/registry/struct.Registry.html#method.register_syntax_extension)
 and the [`SyntaxExtension`
 enum](https://doc.rust-lang.org/syntax/ext/base/enum.SyntaxExtension.html).  For
 a more involved macro example, see
@@ -189,10 +190,11 @@ extern crate syntax;
 // Load rustc as a plugin to get macros
 #[macro_use]
 extern crate rustc;
+extern crate rustc_plugin;
 
 use rustc::lint::{EarlyContext, LintContext, LintPass, EarlyLintPass,
                   EarlyLintPassObject, LintArray};
-use rustc::plugin::Registry;
+use rustc_plugin::Registry;
 use syntax::ast;
 
 declare_lint!(TEST_LINT, Warn, "Warn about items named 'lintme'");

src/librustc/diagnostics.rs

@@ -2181,6 +2181,5 @@ register_diagnostics! {
     E0491, // in type `..`, reference has a longer lifetime than the data it...
     E0492, // cannot borrow a constant which contains interior mutability
     E0495, // cannot infer an appropriate lifetime due to conflicting requirements
-    E0498, // malformed plugin attribute
     E0514, // metadata version mismatch
 }

src/librustc/lib.rs

@@ -33,7 +33,6 @@
 #![feature(const_fn)]
 #![feature(core)]
 #![feature(duration_span)]
-#![feature(dynamic_lib)]
 #![feature(enumset)]
 #![feature(hashmap_hasher)]
 #![feature(into_cow)]
@@ -100,8 +99,8 @@ pub mod front {
 }
 
 pub mod middle {
-    pub mod expr_use_visitor; // STAGE0: increase glitch immunity
     pub mod astconv_util;
+    pub mod expr_use_visitor; // STAGE0: increase glitch immunity
     pub mod astencode;
     pub mod cfg;
     pub mod check_const;
@@ -142,8 +141,6 @@ pub mod metadata;
 
 pub mod session;
 
-pub mod plugin;
-
 pub mod lint;
 
 pub mod util {

src/librustc_driver/driver.rs

@@ -22,8 +22,6 @@ use rustc::metadata::cstore::CStore;
 use rustc::middle::{stability, ty, reachable};
 use rustc::middle::dependency_format;
 use rustc::middle;
-use rustc::plugin::registry::Registry;
-use rustc::plugin;
 use rustc::util::nodemap::NodeMap;
 use rustc::util::common::time;
 use rustc_borrowck as borrowck;
@@ -33,6 +31,8 @@ use rustc_trans::back::write;
 use rustc_trans::trans;
 use rustc_typeck as typeck;
 use rustc_privacy;
+use rustc_plugin::registry::Registry;
+use rustc_plugin as plugin;
 use rustc_front::hir;
 use rustc_front::lowering::{lower_crate, LoweringContext};
 use super::Compilation;

src/librustc_driver/lib.rs

@@ -45,6 +45,7 @@ extern crate rustc_back;
 extern crate rustc_borrowck;
 extern crate rustc_front;
 extern crate rustc_lint;
+extern crate rustc_plugin;
 extern crate rustc_privacy;
 extern crate rustc_mir;
 extern crate rustc_resolve;

src/librustc_lint/lib.rs

@@ -13,7 +13,7 @@
 //! This currently only contains the definitions and implementations
 //! of most of the lints that `rustc` supports directly, it does not
 //! contain the infrastructure for defining/registering lints. That is
-//! available in `rustc::lint` and `rustc::plugin` respectively.
+//! available in `rustc::lint` and `rustc_plugin` respectively.
 //!
 //! # Note
 //!

src/librustc/plugin/build.rs renamed to src/librustc_plugin/build.rs

@@ -0,0 +1,19 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![allow(non_snake_case)]
+
+register_long_diagnostics! {
+
+}
+
+register_diagnostics! {
+    E0498  // malformed plugin attribute
+}

src/librustc_plugin/diagnostics.rs

@@ -50,8 +50,31 @@
 //! See the [Plugins Chapter](../../book/compiler-plugins.html) of the book
 //! for more examples.
 
+#![cfg_attr(stage0, feature(custom_attribute))]
+#![crate_name = "rustc_plugin"]
+#![unstable(feature = "rustc_private", issue = "27812")]
+#![cfg_attr(stage0, staged_api)]
+#![crate_type = "dylib"]
+#![crate_type = "rlib"]
+#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
+      html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
+      html_root_url = "https://doc.rust-lang.org/nightly/")]
+
+#![feature(dynamic_lib)]
+#![feature(staged_api)]
+#![feature(rustc_diagnostic_macros)]
+#![feature(rustc_private)]
+
+#[macro_use] extern crate log;
+#[macro_use] extern crate syntax;
+#[macro_use] #[no_link] extern crate rustc_bitflags;
+
+extern crate rustc;
+extern crate rustc_front;
+
 pub use self::registry::Registry;
 
+pub mod diagnostics;
 pub mod registry;
 pub mod load;
 pub mod build;