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rustc.rc
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rustc.rc
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// Copyright 2012-2013 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.
#[link(name = "rustc",
vers = "0.7-pre",
uuid = "0ce89b41-2f92-459e-bbc1-8f5fe32f16cf",
url = "https://github.com/mozilla/rust/tree/master/src/rustc")];
#[comment = "The Rust compiler"];
#[license = "MIT/ASL2"];
#[crate_type = "lib"];
#[allow(non_implicitly_copyable_typarams)];
#[allow(non_camel_case_types)];
#[deny(deprecated_pattern)];
extern mod std(vers = "0.7-pre");
extern mod syntax(vers = "0.7-pre");
use driver::driver::{host_triple, optgroups, early_error};
use driver::driver::{str_input, file_input, build_session_options};
use driver::driver::{build_session, build_configuration, parse_pretty};
use driver::driver::{pp_mode, pretty_print_input, list_metadata};
use driver::driver::{compile_input};
use driver::session;
use middle::lint;
use std::getopts::{groups, opt_present};
use std::getopts;
use syntax::codemap;
use syntax::diagnostic;
pub mod middle {
pub mod trans {
pub mod macros;
pub mod inline;
pub mod monomorphize;
pub mod controlflow;
pub mod glue;
pub mod datum;
pub mod write_guard;
pub mod callee;
pub mod expr;
pub mod common;
pub mod consts;
pub mod type_of;
pub mod build;
pub mod base;
pub mod _match;
pub mod uniq;
pub mod closure;
pub mod tvec;
pub mod meth;
pub mod cabi;
pub mod cabi_x86;
pub mod cabi_x86_64;
pub mod cabi_arm;
pub mod cabi_mips;
pub mod foreign;
pub mod reflect;
pub mod shape;
pub mod debuginfo;
pub mod type_use;
pub mod reachable;
pub mod machine;
pub mod adt;
pub mod asm;
}
pub mod ty;
pub mod subst;
#[cfg(stage0)] #[path = "resolve_stage0.rs"]
pub mod resolve;
#[cfg(not(stage0))]
pub mod resolve;
#[path = "typeck/mod.rs"]
pub mod typeck;
pub mod check_loop;
pub mod check_match;
pub mod check_const;
pub mod lint;
#[path = "borrowck/mod.rs"]
pub mod borrowck;
pub mod dataflow;
pub mod mem_categorization;
pub mod liveness;
pub mod kind;
pub mod freevars;
pub mod pat_util;
pub mod region;
pub mod const_eval;
pub mod astencode;
pub mod lang_items;
pub mod privacy;
pub mod moves;
}
pub mod front {
pub mod config;
pub mod test;
pub mod core_inject;
pub mod intrinsic_inject;
}
pub mod back {
pub mod link;
pub mod abi;
pub mod upcall;
pub mod arm;
pub mod mips;
pub mod x86;
pub mod x86_64;
pub mod rpath;
pub mod target_strs;
}
#[path = "metadata/mod.rs"]
pub mod metadata;
#[path = "driver/mod.rs"]
pub mod driver;
pub mod util {
pub mod common;
pub mod ppaux;
}
pub mod lib {
pub mod llvm;
}
pub fn version(argv0: &str) {
let mut vers = ~"unknown version";
let env_vers = env!("CFG_VERSION");
if env_vers.len() != 0 { vers = env_vers; }
io::println(fmt!("%s %s", argv0, vers));
io::println(fmt!("host: %s", host_triple()));
}
pub fn usage(argv0: &str) {
let message = fmt!("Usage: %s [OPTIONS] INPUT", argv0);
io::println(groups::usage(message, optgroups()) +
~"Additional help:
-W help Print 'lint' options and default settings
-Z help Print internal options for debugging rustc
");
}
pub fn describe_warnings() {
io::println(fmt!("
Available lint options:
-W <foo> Warn about <foo>
-A <foo> Allow <foo>
-D <foo> Deny <foo>
-F <foo> Forbid <foo> (deny, and deny all overrides)
"));
let lint_dict = lint::get_lint_dict();
let mut max_key = 0;
for lint_dict.each_key |k| { max_key = uint::max(k.len(), max_key); }
fn padded(max: uint, s: &str) -> ~str {
str::from_bytes(vec::from_elem(max - s.len(), ' ' as u8)) + s
}
io::println(fmt!("\nAvailable lint checks:\n"));
io::println(fmt!(" %s %7.7s %s",
padded(max_key, ~"name"), ~"default", ~"meaning"));
io::println(fmt!(" %s %7.7s %s\n",
padded(max_key, ~"----"), ~"-------", ~"-------"));
for lint_dict.each |k, v| {
let k = str::replace(*k, ~"_", ~"-");
io::println(fmt!(" %s %7.7s %s",
padded(max_key, k),
match v.default {
lint::allow => ~"allow",
lint::warn => ~"warn",
lint::deny => ~"deny",
lint::forbid => ~"forbid"
},
v.desc));
}
io::println(~"");
}
pub fn describe_debug_flags() {
io::println(fmt!("\nAvailable debug options:\n"));
for session::debugging_opts_map().each |pair| {
let (name, desc, _) = /*bad*/copy *pair;
io::println(fmt!(" -Z %-20s -- %s", name, desc));
}
}
pub fn run_compiler(args: &~[~str], demitter: diagnostic::Emitter) {
// Don't display log spew by default. Can override with RUST_LOG.
::core::logging::console_off();
let mut args = /*bad*/copy *args;
let binary = @args.shift();
if args.is_empty() { usage(*binary); return; }
let matches =
&match getopts::groups::getopts(args, optgroups()) {
Ok(m) => m,
Err(f) => {
early_error(demitter, getopts::fail_str(f));
}
};
if opt_present(matches, ~"h") || opt_present(matches, ~"help") {
usage(*binary);
return;
}
let lint_flags = vec::append(getopts::opt_strs(matches, ~"W"),
getopts::opt_strs(matches, ~"warn"));
if lint_flags.contains(&~"help") {
describe_warnings();
return;
}
if getopts::opt_strs(matches, ~"Z").contains(&~"help") {
describe_debug_flags();
return;
}
if opt_present(matches, ~"v") || opt_present(matches, ~"version") {
version(*binary);
return;
}
let input = match vec::len(matches.free) {
0u => early_error(demitter, ~"no input filename given"),
1u => {
let ifile = /*bad*/copy matches.free[0];
if ifile == ~"-" {
let src = str::from_bytes(io::stdin().read_whole_stream());
str_input(src)
} else {
file_input(Path(ifile))
}
}
_ => early_error(demitter, ~"multiple input filenames provided")
};
let sopts = build_session_options(binary, matches, demitter);
let sess = build_session(sopts, demitter);
let odir = getopts::opt_maybe_str(matches, ~"out-dir");
let odir = odir.map(|o| Path(*o));
let ofile = getopts::opt_maybe_str(matches, ~"o");
let ofile = ofile.map(|o| Path(*o));
let cfg = build_configuration(sess, binary, &input);
let pretty = getopts::opt_default(matches, ~"pretty", "normal").map(
|a| parse_pretty(sess, *a));
match pretty {
Some::<pp_mode>(ppm) => {
pretty_print_input(sess, cfg, &input, ppm);
return;
}
None::<pp_mode> => {/* continue */ }
}
let ls = opt_present(matches, ~"ls");
if ls {
match input {
file_input(ref ifile) => {
list_metadata(sess, &(*ifile), io::stdout());
}
str_input(_) => {
early_error(demitter, ~"can not list metadata for stdin");
}
}
return;
}
compile_input(sess, cfg, &input, &odir, &ofile);
}
#[deriving(Eq)]
pub enum monitor_msg {
fatal,
done,
}
/*
This is a sanity check that any failure of the compiler is performed
through the diagnostic module and reported properly - we shouldn't be calling
plain-old-fail on any execution path that might be taken. Since we have
console logging off by default, hitting a plain fail statement would make the
compiler silently exit, which would be terrible.
This method wraps the compiler in a subtask and injects a function into the
diagnostic emitter which records when we hit a fatal error. If the task
fails without recording a fatal error then we've encountered a compiler
bug and need to present an error.
*/
pub fn monitor(f: ~fn(diagnostic::Emitter)) {
use core::comm::*;
let (p, ch) = stream();
let ch = SharedChan::new(ch);
let ch_capture = ch.clone();
match do task::try || {
let ch = ch_capture.clone();
let ch_capture = ch.clone();
// The 'diagnostics emitter'. Every error, warning, etc. should
// go through this function.
let demitter: @fn(Option<(@codemap::CodeMap, codemap::span)>,
&str,
diagnostic::level) =
|cmsp, msg, lvl| {
if lvl == diagnostic::fatal {
ch_capture.send(fatal);
}
diagnostic::emit(cmsp, msg, lvl);
};
struct finally {
ch: SharedChan<monitor_msg>,
}
impl Drop for finally {
fn finalize(&self) { self.ch.send(done); }
}
let _finally = finally { ch: ch };
f(demitter)
} {
result::Ok(_) => { /* fallthrough */ }
result::Err(_) => {
// Task failed without emitting a fatal diagnostic
if p.recv() == done {
diagnostic::emit(
None,
diagnostic::ice_msg(~"unexpected failure"),
diagnostic::error);
for [
~"the compiler hit an unexpected failure path. \
this is a bug",
~"try running with RUST_LOG=rustc=1,::rt::backtrace \
to get further details and report the results \
to github.com/mozilla/rust/issues"
].each |note| {
diagnostic::emit(None, *note, diagnostic::note)
}
}
// Fail so the process returns a failure code
fail!();
}
}
}
pub fn main() {
let args = os::args();
do monitor |demitter| {
run_compiler(&args, demitter);
}
}