442 lines
13 KiB
Rust
442 lines
13 KiB
Rust
// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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/*!
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The Rust compiler.
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# Note
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This API is completely unstable and subject to change.
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*/
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#![crate_id = "rustc#0.11-pre"]
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#![comment = "The Rust compiler"]
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#![license = "MIT/ASL2"]
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#![crate_type = "dylib"]
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#![crate_type = "rlib"]
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#![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
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html_favicon_url = "http://www.rust-lang.org/favicon.ico",
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html_root_url = "http://static.rust-lang.org/doc/master")]
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#![allow(deprecated)]
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#![feature(macro_rules, globs, struct_variant, managed_boxes, quote,
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default_type_params, phase)]
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extern crate flate;
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extern crate arena;
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extern crate syntax;
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extern crate serialize;
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extern crate sync;
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extern crate getopts;
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extern crate collections;
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extern crate time;
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extern crate libc;
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#[phase(syntax, link)]
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extern crate log;
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use back::link;
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use driver::session;
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use middle::lint;
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use d = driver::driver;
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use std::any::AnyRefExt;
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use std::cmp;
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use std::io;
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use std::os;
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use std::str;
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use std::task;
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use syntax::ast;
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use syntax::diagnostic::Emitter;
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use syntax::diagnostic;
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use syntax::parse;
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pub mod middle {
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pub mod trans;
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pub mod ty;
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pub mod ty_fold;
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pub mod subst;
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pub mod resolve;
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pub mod resolve_lifetime;
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pub mod typeck;
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pub mod check_loop;
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pub mod check_match;
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pub mod check_const;
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pub mod check_static;
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pub mod lint;
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pub mod borrowck;
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pub mod dataflow;
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pub mod mem_categorization;
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pub mod liveness;
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pub mod kind;
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pub mod freevars;
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pub mod pat_util;
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pub mod region;
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pub mod const_eval;
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pub mod astencode;
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pub mod lang_items;
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pub mod privacy;
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pub mod moves;
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pub mod entry;
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pub mod effect;
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pub mod reachable;
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pub mod graph;
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pub mod cfg;
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pub mod dead;
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}
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pub mod front {
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pub mod config;
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pub mod test;
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pub mod std_inject;
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pub mod assign_node_ids_and_map;
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pub mod feature_gate;
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pub mod show_span;
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}
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pub mod back {
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pub mod abi;
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pub mod archive;
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pub mod arm;
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pub mod link;
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pub mod lto;
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pub mod mips;
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pub mod rpath;
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pub mod svh;
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pub mod target_strs;
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pub mod x86;
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pub mod x86_64;
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}
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pub mod metadata;
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pub mod driver;
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pub mod util {
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pub mod common;
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pub mod ppaux;
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pub mod sha2;
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pub mod nodemap;
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}
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pub mod lib {
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pub mod llvm;
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pub mod llvmdeps;
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}
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static BUG_REPORT_URL: &'static str =
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"http://static.rust-lang.org/doc/master/complement-bugreport.html";
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pub fn version(argv0: &str) {
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let vers = match option_env!("CFG_VERSION") {
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Some(vers) => vers,
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None => "unknown version"
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};
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println!("{} {}", argv0, vers);
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println!("host: {}", d::host_triple());
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}
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pub fn usage(argv0: &str) {
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let message = format!("Usage: {} [OPTIONS] INPUT", argv0);
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println!("{}\n\
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Additional help:
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-C help Print codegen options
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-W help Print 'lint' options and default settings
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-Z help Print internal options for debugging rustc\n",
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getopts::usage(message, d::optgroups().as_slice()));
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}
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pub fn describe_warnings() {
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println!("
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Available lint options:
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-W <foo> Warn about <foo>
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-A <foo> Allow <foo>
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-D <foo> Deny <foo>
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-F <foo> Forbid <foo> (deny, and deny all overrides)
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");
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let lint_dict = lint::get_lint_dict();
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let mut lint_dict = lint_dict.move_iter()
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.map(|(k, v)| (v, k))
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.collect::<Vec<(lint::LintSpec, &'static str)> >();
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lint_dict.as_mut_slice().sort();
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let mut max_key = 0;
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for &(_, name) in lint_dict.iter() {
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max_key = cmp::max(name.len(), max_key);
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}
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fn padded(max: uint, s: &str) -> ~str {
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" ".repeat(max - s.len()) + s
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}
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println!("\nAvailable lint checks:\n");
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println!(" {} {:7.7s} {}",
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padded(max_key, "name"), "default", "meaning");
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println!(" {} {:7.7s} {}\n",
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padded(max_key, "----"), "-------", "-------");
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for (spec, name) in lint_dict.move_iter() {
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let name = name.replace("_", "-");
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println!(" {} {:7.7s} {}",
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padded(max_key, name),
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lint::level_to_str(spec.default),
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spec.desc);
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}
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println!("");
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}
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pub fn describe_debug_flags() {
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println!("\nAvailable debug options:\n");
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let r = session::debugging_opts_map();
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for tuple in r.iter() {
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match *tuple {
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(ref name, ref desc, _) => {
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println!(" -Z {:>20s} -- {}", *name, *desc);
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}
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}
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}
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}
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pub fn describe_codegen_flags() {
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println!("\nAvailable codegen options:\n");
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let mut cg = session::basic_codegen_options();
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for &(name, parser, desc) in session::CG_OPTIONS.iter() {
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// we invoke the parser function on `None` to see if this option needs
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// an argument or not.
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let (width, extra) = if parser(&mut cg, None) {
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(25, "")
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} else {
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(21, "=val")
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};
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println!(" -C {:>width$s}{} -- {}", name.replace("_", "-"),
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extra, desc, width=width);
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}
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}
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pub fn run_compiler(args: &[~str]) {
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let mut args = args.to_owned();
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let binary = args.shift().unwrap();
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if args.is_empty() { usage(binary); return; }
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let matches =
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&match getopts::getopts(args, d::optgroups().as_slice()) {
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Ok(m) => m,
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Err(f) => {
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d::early_error(f.to_err_msg());
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}
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};
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if matches.opt_present("h") || matches.opt_present("help") {
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usage(binary);
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return;
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}
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let lint_flags = matches.opt_strs("W").move_iter().collect::<Vec<_>>().append(
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matches.opt_strs("warn").as_slice());
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if lint_flags.iter().any(|x| x == &~"help") {
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describe_warnings();
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return;
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}
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let r = matches.opt_strs("Z");
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if r.iter().any(|x| x == &~"help") {
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describe_debug_flags();
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return;
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}
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let cg_flags = matches.opt_strs("C");
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if cg_flags.iter().any(|x| x == &~"help") {
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describe_codegen_flags();
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return;
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}
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if cg_flags.contains(&~"passes=list") {
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unsafe { lib::llvm::llvm::LLVMRustPrintPasses(); }
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return;
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}
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if matches.opt_present("v") || matches.opt_present("version") {
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version(binary);
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return;
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}
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let (input, input_file_path) = match matches.free.len() {
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0u => d::early_error("no input filename given"),
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1u => {
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let ifile = matches.free.get(0).as_slice();
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if ifile == "-" {
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let contents = io::stdin().read_to_end().unwrap();
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let src = str::from_utf8(contents.as_slice()).unwrap().to_owned();
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(d::StrInput(src), None)
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} else {
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(d::FileInput(Path::new(ifile)), Some(Path::new(ifile)))
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}
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}
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_ => d::early_error("multiple input filenames provided")
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};
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let sopts = d::build_session_options(matches);
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let sess = d::build_session(sopts, input_file_path);
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let odir = matches.opt_str("out-dir").map(|o| Path::new(o));
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let ofile = matches.opt_str("o").map(|o| Path::new(o));
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let cfg = d::build_configuration(&sess);
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let pretty = matches.opt_default("pretty", "normal").map(|a| {
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d::parse_pretty(&sess, a)
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});
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match pretty {
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Some::<d::PpMode>(ppm) => {
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d::pretty_print_input(sess, cfg, &input, ppm, ofile);
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return;
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}
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None::<d::PpMode> => {/* continue */ }
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}
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let ls = matches.opt_present("ls");
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if ls {
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match input {
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d::FileInput(ref ifile) => {
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let mut stdout = io::stdout();
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d::list_metadata(&sess, &(*ifile), &mut stdout).unwrap();
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}
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d::StrInput(_) => {
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d::early_error("can not list metadata for stdin");
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}
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}
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return;
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}
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let (crate_id, crate_name, crate_file_name) = sess.opts.print_metas;
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// these nasty nested conditions are to avoid doing extra work
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if crate_id || crate_name || crate_file_name {
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let attrs = parse_crate_attrs(&sess, &input);
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let t_outputs = d::build_output_filenames(&input, &odir, &ofile,
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attrs.as_slice(), &sess);
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let id = link::find_crate_id(attrs.as_slice(), t_outputs.out_filestem);
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if crate_id {
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println!("{}", id.to_str());
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}
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if crate_name {
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println!("{}", id.name);
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}
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if crate_file_name {
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let crate_types = session::collect_crate_types(&sess,
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attrs.as_slice());
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for &style in crate_types.iter() {
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let fname = link::filename_for_input(&sess, style, &id,
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&t_outputs.with_extension(""));
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println!("{}", fname.filename_display());
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}
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}
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return;
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}
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d::compile_input(sess, cfg, &input, &odir, &ofile);
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}
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fn parse_crate_attrs(sess: &session::Session, input: &d::Input) ->
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Vec<ast::Attribute> {
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let result = match *input {
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d::FileInput(ref ifile) => {
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parse::parse_crate_attrs_from_file(ifile,
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Vec::new(),
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&sess.parse_sess)
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}
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d::StrInput(ref src) => {
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parse::parse_crate_attrs_from_source_str(d::anon_src(),
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(*src).clone(),
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Vec::new(),
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&sess.parse_sess)
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}
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};
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result.move_iter().collect()
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}
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/// Run a procedure which will detect failures in the compiler and print nicer
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/// error messages rather than just failing the test.
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///
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/// The diagnostic emitter yielded to the procedure should be used for reporting
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/// errors of the compiler.
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pub fn monitor(f: proc():Send) {
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// FIXME: This is a hack for newsched since it doesn't support split stacks.
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// rustc needs a lot of stack! When optimizations are disabled, it needs
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// even *more* stack than usual as well.
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#[cfg(rtopt)]
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static STACK_SIZE: uint = 6000000; // 6MB
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#[cfg(not(rtopt))]
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static STACK_SIZE: uint = 20000000; // 20MB
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let mut task_builder = task::task().named("rustc");
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// FIXME: Hacks on hacks. If the env is trying to override the stack size
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// then *don't* set it explicitly.
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if os::getenv("RUST_MIN_STACK").is_none() {
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task_builder.opts.stack_size = Some(STACK_SIZE);
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}
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let (tx, rx) = channel();
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let w = io::ChanWriter::new(tx);
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let mut r = io::ChanReader::new(rx);
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match task_builder.try(proc() {
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io::stdio::set_stderr(~w);
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f()
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}) {
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Ok(()) => { /* fallthrough */ }
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Err(value) => {
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// Task failed without emitting a fatal diagnostic
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if !value.is::<diagnostic::FatalError>() {
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let mut emitter = diagnostic::EmitterWriter::stderr();
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// a .span_bug or .bug call has already printed what
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// it wants to print.
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if !value.is::<diagnostic::ExplicitBug>() {
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emitter.emit(
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None,
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"unexpected failure",
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diagnostic::Bug);
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}
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let xs = [
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~"the compiler hit an unexpected failure path. this is a bug.",
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"we would appreciate a bug report: " + BUG_REPORT_URL,
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~"run with `RUST_BACKTRACE=1` for a backtrace",
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];
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for note in xs.iter() {
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emitter.emit(None, *note, diagnostic::Note)
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}
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match r.read_to_str() {
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Ok(s) => println!("{}", s),
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Err(e) => emitter.emit(None,
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format!("failed to read internal stderr: {}", e),
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diagnostic::Error),
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}
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}
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// Fail so the process returns a failure code, but don't pollute the
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// output with some unnecessary failure messages, we've already
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// printed everything that we needed to.
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io::stdio::set_stderr(~io::util::NullWriter);
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fail!();
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}
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}
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}
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pub fn main() {
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std::os::set_exit_status(main_args(std::os::args()));
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}
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pub fn main_args(args: &[~str]) -> int {
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let owned_args = args.to_owned();
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monitor(proc() run_compiler(owned_args));
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0
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}
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