462 lines
13 KiB
Rust
462 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#0.10-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.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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#[feature(macro_rules, globs, struct_variant, managed_boxes)];
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extern mod extra;
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extern mod syntax;
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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::cast;
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use std::comm;
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use std::io;
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use std::io::Reader;
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use std::num;
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use std::os;
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use std::result;
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use std::str;
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use std::task;
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use std::vec;
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use extra::getopts::groups;
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use extra::getopts;
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use syntax::ast;
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use syntax::attr;
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use syntax::codemap;
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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 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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}
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pub mod back {
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pub mod archive;
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pub mod link;
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pub mod abi;
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pub mod arm;
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pub mod mips;
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pub mod x86;
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pub mod x86_64;
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pub mod rpath;
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pub mod target_strs;
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pub mod lto;
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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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}
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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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// A curious inner module that allows ::std::foo to be available in here for
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// macros.
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/*
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mod std {
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pub use std::clone;
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pub use std::cmp;
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pub use std::os;
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pub use std::str;
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pub use std::sys;
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pub use std::to_bytes;
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pub use std::unstable;
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pub use extra::serialize;
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}
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*/
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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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-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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groups::usage(message, d::optgroups()));
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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::<~[(lint::LintSpec, &'static str)]>();
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lint_dict.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 = num::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"); // FIXME: #9970
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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"); // FIXME: #9970
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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 run_compiler(args: &[~str], demitter: @diagnostic::Emitter) {
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let mut args = args.to_owned();
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let binary = args.shift();
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if args.is_empty() { usage(binary); return; }
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let matches =
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&match getopts::groups::getopts(args, d::optgroups()) {
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Ok(m) => m,
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Err(f) => {
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d::early_error(demitter, 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 = vec::append(matches.opt_strs("W"),
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matches.opt_strs("warn"));
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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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if matches.opt_str("passes") == Some(~"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 = match matches.free.len() {
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0u => d::early_error(demitter, "no input filename given"),
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1u => {
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let ifile = matches.free[0].as_slice();
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if "-" == ifile {
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let src = str::from_utf8_owned(io::stdin().read_to_end());
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d::StrInput(src.to_managed())
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} else {
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d::FileInput(Path::new(ifile))
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}
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}
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_ => d::early_error(demitter, "multiple input filenames provided")
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};
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let sopts = d::build_session_options(binary, matches, demitter);
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let sess = d::build_session(sopts, demitter);
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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);
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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),
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&mut stdout as &mut io::Writer);
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}
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d::StrInput(_) => {
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d::early_error(demitter, "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) = sopts.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, sess);
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if crate_id || crate_name {
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let crateid = match attr::find_crateid(attrs) {
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Some(crateid) => crateid,
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None => {
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sess.fatal("No crate_id and --crate-id or \
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--crate-name requested")
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}
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};
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if crate_id {
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println!("{}", crateid.to_str());
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}
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if crate_name {
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println!("{}", crateid.name);
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}
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}
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if crate_file_name {
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let lm = link::build_link_meta(sess, attrs, &t_outputs.obj_filename,
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&mut ::util::sha2::Sha256::new());
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let outputs = session::collect_outputs(&sess, attrs);
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for &style in outputs.iter() {
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let fname = link::filename_for_input(&sess, style, &lm,
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&t_outputs.out_filename);
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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,
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input: &d::Input) -> ~[ast::Attribute] {
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match *input {
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d::FileInput(ref ifile) => {
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parse::parse_crate_attrs_from_file(ifile, ~[], sess.parse_sess)
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}
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d::StrInput(src) => {
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parse::parse_crate_attrs_from_source_str(
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d::anon_src(), src, ~[], sess.parse_sess)
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}
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}
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}
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#[deriving(Eq)]
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pub enum monitor_msg {
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fatal,
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done,
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}
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struct RustcEmitter {
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ch_capture: comm::SharedChan<monitor_msg>
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}
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impl diagnostic::Emitter for RustcEmitter {
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fn emit(&self,
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cmsp: Option<(&codemap::CodeMap, codemap::Span)>,
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msg: &str,
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lvl: diagnostic::Level) {
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if lvl == diagnostic::Fatal {
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let this = unsafe { cast::transmute_mut(self) };
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this.ch_capture.send(fatal)
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}
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diagnostic::DefaultEmitter.emit(cmsp, msg, lvl)
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}
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}
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/*
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This is a sanity check that any failure of the compiler is performed
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through the diagnostic module and reported properly - we shouldn't be calling
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plain-old-fail on any execution path that might be taken. Since we have
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console logging off by default, hitting a plain fail statement would make the
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compiler silently exit, which would be terrible.
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This method wraps the compiler in a subtask and injects a function into the
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diagnostic emitter which records when we hit a fatal error. If the task
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fails without recording a fatal error then we've encountered a compiler
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bug and need to present an error.
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*/
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pub fn monitor(f: proc(@diagnostic::Emitter)) {
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use std::comm::*;
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// XXX: 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 (p, ch) = SharedChan::new();
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let ch_capture = ch.clone();
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let mut task_builder = task::task();
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task_builder.name("rustc");
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// XXX: 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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match task_builder.try(proc() {
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let ch = ch_capture.clone();
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// The 'diagnostics emitter'. Every error, warning, etc. should
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// go through this function.
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let demitter = @RustcEmitter {
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ch_capture: ch.clone(),
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} as @diagnostic::Emitter;
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struct finally {
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ch: SharedChan<monitor_msg>,
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}
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impl Drop for finally {
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fn drop(&mut self) { self.ch.send(done); }
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}
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let _finally = finally { ch: ch };
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f(demitter);
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}) {
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result::Ok(_) => { /* fallthrough */ }
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result::Err(_) => {
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// Task failed without emitting a fatal diagnostic
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if p.recv() == done {
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diagnostic::DefaultEmitter.emit(
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None,
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diagnostic::ice_msg("unexpected failure"),
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diagnostic::Error);
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let xs = [
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~"the compiler hit an unexpected failure path. \
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this is a bug",
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~"try running with RUST_LOG=rustc=1 \
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to get further details and report the results \
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to github.com/mozilla/rust/issues"
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];
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for note in xs.iter() {
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diagnostic::DefaultEmitter.emit(None,
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*note,
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diagnostic::Note)
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}
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}
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// Fail so the process returns a failure code
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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(demitter) run_compiler(owned_args, demitter));
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0
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}
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