206 lines
7.2 KiB
Rust
206 lines
7.2 KiB
Rust
#[no_core];
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use core(vers = "0.2");
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use std(vers = "0.2");
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use rustc(vers = "0.2");
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import core::*;
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// -*- rust -*-
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import result::{ok, err};
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import std::getopts;
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import io::writer_util;
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import getopts::{opt_present};
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import rustc::driver::driver::*;
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import rustc::syntax::codemap;
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import rustc::driver::diagnostic;
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fn version(argv0: str) {
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let mut vers = "unknown version";
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let env_vers = #env["CFG_VERSION"];
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if str::len(env_vers) != 0u { vers = env_vers; }
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io::stdout().write_str(#fmt["%s %s\n", argv0, vers]);
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io::stdout().write_str(#fmt["host: %s\n", host_triple()]);
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}
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fn usage(argv0: str) {
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io::stdout().write_str(#fmt["Usage: %s [options] <input>\n", argv0] +
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"
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Options:
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--bin Compile an executable crate (default)
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-c Compile and assemble, but do not link
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--cfg <cfgspec> Configure the compilation environment
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--emit-llvm Produce an LLVM bitcode file
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-g Produce debug info
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--gc Garbage collect shared data (experimental/temporary)
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-h --help Display this message
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-L <path> Add a directory to the library search path
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--lib Compile a library crate
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--ls List the symbols defined by a compiled library crate
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--no-asm-comments Do not add comments into the assembly source
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--no-trans Run all passes except translation; no output
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--no-verify Suppress LLVM verification step (slight speedup)
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(see http://llvm.org/docs/Passes.html for detail)
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-O Equivalent to --opt-level=2
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-o <filename> Write output to <filename>
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--opt-level <lvl> Optimize with possible levels 0-3
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--out-dir <dir> Write output to compiler-chosen filename in <dir>
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--parse-only Parse only; do not compile, assemble, or link
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--pretty [type] Pretty-print the input instead of compiling;
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valid types are: normal (un-annotated source),
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expanded (crates expanded), typed (crates expanded,
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with type annotations), or identified (fully
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parenthesized, AST nodes and blocks with IDs)
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-S Compile only; do not assemble or link
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--save-temps Write intermediate files (.bc, .opt.bc, .o)
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in addition to normal output
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--static Use or produce static libraries or binaries
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--stats Print compilation statistics
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--sysroot <path> Override the system root
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--test Build a test harness
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--target <triple> Target cpu-manufacturer-kernel[-os] to compile for
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(default: host triple)
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(see http://sources.redhat.com/autobook/autobook/
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autobook_17.html for detail)
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-W <foo> enable warning <foo>
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-W no-<foo> disable warning <foo>
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-W err-<foo> enable warning <foo> as an error
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--time-passes Time the individual phases of the compiler
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--time-llvm-passes Time the individual phases of the LLVM backend
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--count-llvm-insns Count and categorize generated LLVM instructions
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-v --version Print version info and exit
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");
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}
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fn run_compiler(args: [str], demitter: diagnostic::emitter) {
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// Don't display log spew by default. Can override with RUST_LOG.
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logging::console_off();
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let mut args = args;
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let binary = vec::shift(args);
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if vec::len(args) == 0u { usage(binary); ret; }
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let match =
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alt getopts::getopts(args, opts()) {
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ok(m) { m }
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err(f) {
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early_error(demitter, getopts::fail_str(f))
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}
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};
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if opt_present(match, "h") || opt_present(match, "help") {
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usage(binary);
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ret;
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}
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if opt_present(match, "v") || opt_present(match, "version") {
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version(binary);
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ret;
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}
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let ifile = alt vec::len(match.free) {
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0u { early_error(demitter, "no input filename given") }
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1u { match.free[0] }
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_ { early_error(demitter, "multiple input filenames provided") }
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};
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let sopts = build_session_options(match, demitter);
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let sess = build_session(sopts, demitter);
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let odir = getopts::opt_maybe_str(match, "out-dir");
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let ofile = getopts::opt_maybe_str(match, "o");
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let cfg = build_configuration(sess, binary, ifile);
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let pretty =
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option::map(getopts::opt_default(match, "pretty",
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"normal"),
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bind parse_pretty(sess, _));
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alt pretty {
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some::<pp_mode>(ppm) { pretty_print_input(sess, cfg, ifile, ppm); ret; }
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none::<pp_mode> {/* continue */ }
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}
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let ls = opt_present(match, "ls");
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if ls {
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list_metadata(sess, ifile, io::stdout());
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ret;
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}
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compile_input(sess, cfg, ifile, odir, ofile);
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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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fn monitor(f: fn~(diagnostic::emitter)) {
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enum monitor_msg {
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fatal,
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done,
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};
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let p = comm::port();
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let ch = comm::chan(p);
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alt task::try {||
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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 = fn@(cmsp: option<(codemap::codemap, codemap::span)>,
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msg: str, lvl: diagnostic::level) {
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if lvl == diagnostic::fatal {
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comm::send(ch, fatal);
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}
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diagnostic::emit(cmsp, msg, lvl);
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};
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resource finally(ch: comm::chan<monitor_msg>) {
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comm::send(ch, done);
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}
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let _finally = finally(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 comm::recv(p) == done {
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diagnostic::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 note = "The compiler hit an unexpected failure path. \
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This is a bug. Try running with \
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RUST_LOG=rustc=0,::rt::backtrace \
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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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diagnostic::emit(none, note, diagnostic::note);
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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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fn main(args: [str]) {
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monitor {|demitter|
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run_compiler(args, demitter);
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}
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}
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// Local Variables:
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// mode: rust
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// fill-column: 78;
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// indent-tabs-mode: nil
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// c-basic-offset: 4
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// buffer-file-coding-system: utf-8-unix
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// End:
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