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// -*- rust -*-
import front.parser;
import front.token;
import middle.trans;
import middle.resolve;
import middle.typeck;
import util.common;
import std.option;
import std.option.some;
import std.option.none;
import std._str;
import std._vec;
impure fn parse_input(session.session sess,
parser.parser p,
str input) -> @front.ast.crate {
if (_str.ends_with(input, ".rc")) {
ret parser.parse_crate_from_crate_file(p);
} else if (_str.ends_with(input, ".rs")) {
ret parser.parse_crate_from_source_file(p);
}
sess.err("unknown unput file type: " + input);
fail;
}
impure fn compile_input(session.session sess, str input, str output,
bool shared) {
auto p = parser.new_parser(sess, 0, input);
auto crate = parse_input(sess, p, input);
crate = resolve.resolve_crate(sess, crate);
crate = typeck.check_crate(sess, crate);
trans.trans_crate(sess, crate, output, shared);
}
fn warn_wrong_compiler() {
log "This is the rust 'self-hosted' compiler.";
log "The one written in rust.";
log "It does nothing yet, it's a placeholder.";
log "You want rustboot, the compiler next door.";
}
fn usage(session.session sess, str argv0) {
log #fmt("usage: %s [options] <input>", argv0);
log "options:";
log "";
log " -o <filename> write output to <filename>";
log " -nowarn suppress wrong-compiler warning";
log " -shared compile a shared-library crate";
log " -h display this message";
log "";
log "";
}
fn get_os() -> session.os {
auto s = std.os.target_os();
if (_str.eq(s, "win32")) { ret session.os_win32; }
if (_str.eq(s, "macos")) { ret session.os_macos; }
if (_str.eq(s, "linux")) { ret session.os_linux; }
}
impure fn main(vec[str] args) {
// FIXME: don't hard-wire this.
auto target_cfg = rec(os = get_os(),
arch = session.arch_x86,
int_type = common.ty_i32,
uint_type = common.ty_u32,
float_type = common.ty_f64 );
auto sess = session.session(target_cfg);
let option.t[str] input_file = none[str];
let option.t[str] output_file = none[str];
let bool do_warn = true;
let bool shared = false;
auto i = 1u;
auto len = _vec.len[str](args);
// FIXME: a getopt module would be nice.
while (i < len) {
auto arg = args.(i);
if (_str.byte_len(arg) > 0u && arg.(0) == '-' as u8) {
if (_str.eq(arg, "-nowarn")) {
do_warn = false;
} else if (_str.eq(arg, "-shared")) {
shared = true;
} else {
// FIXME: rust could use an elif construct.
if (_str.eq(arg, "-o")) {
if (i+1u < len) {
output_file = some(args.(i+1u));
i += 1u;
} else {
usage(sess, args.(0));
sess.err("-o requires an argument");
}
} else {
if (_str.eq(arg, "-h")) {
usage(sess, args.(0));
} else {
usage(sess, args.(0));
sess.err("unrecognized option: " + arg);
}
}
}
} else {
alt (input_file) {
case (some[str](_)) {
usage(sess, args.(0));
sess.err("multiple inputs provided");
}
case (none[str]) {
input_file = some[str](arg);
}
}
// FIXME: dummy node to work around typestate mis-wiring bug.
i = i;
}
i += 1u;
}
if (do_warn) {
warn_wrong_compiler();
}
alt (input_file) {
case (none[str]) {
usage(sess, args.(0));
sess.err("no input filename");
}
case (some[str](?ifile)) {
alt (output_file) {
case (none[str]) {
let vec[str] parts = _str.split(ifile, '.' as u8);
parts = _vec.pop[str](parts);
parts += ".bc";
auto ofile = _str.concat(parts);
compile_input(sess, ifile, ofile, shared);
}
case (some[str](?ofile)) {
compile_input(sess, ifile, ofile, shared);
}
}
}
}
}
// Local Variables:
// mode: rust
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// compile-command: "make -k -C ../.. 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
// End:
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