123 lines
4.0 KiB
Rust
123 lines
4.0 KiB
Rust
// Copyright 2012 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.
|
|
|
|
use codemap;
|
|
use codemap::{FileMap, Loc, Pos, span};
|
|
use ext::base::*;
|
|
use ext::base;
|
|
use ext::build::{mk_base_vec_e, mk_uint, mk_u8, mk_base_str};
|
|
use print::pprust;
|
|
|
|
use core::io;
|
|
use core::prelude::*;
|
|
use core::result;
|
|
use core::str;
|
|
use core::vec;
|
|
|
|
/* line!(): expands to the current line number */
|
|
pub fn expand_line(cx: ext_ctxt, sp: span, tts: ~[ast::token_tree])
|
|
-> base::MacResult {
|
|
base::check_zero_tts(cx, sp, tts, "line!");
|
|
let loc = cx.codemap().lookup_char_pos(sp.lo);
|
|
base::MRExpr(mk_uint(cx, sp, loc.line))
|
|
}
|
|
|
|
/* col!(): expands to the current column number */
|
|
pub fn expand_col(cx: ext_ctxt, sp: span, tts: ~[ast::token_tree])
|
|
-> base::MacResult {
|
|
base::check_zero_tts(cx, sp, tts, "col!");
|
|
let loc = cx.codemap().lookup_char_pos(sp.lo);
|
|
base::MRExpr(mk_uint(cx, sp, loc.col.to_uint()))
|
|
}
|
|
|
|
/* file!(): expands to the current filename */
|
|
/* The filemap (`loc.file`) contains a bunch more information we could spit
|
|
* out if we wanted. */
|
|
pub fn expand_file(cx: ext_ctxt, sp: span, tts: ~[ast::token_tree])
|
|
-> base::MacResult {
|
|
base::check_zero_tts(cx, sp, tts, "file!");
|
|
let Loc { file: @FileMap { name: filename, _ }, _ } =
|
|
cx.codemap().lookup_char_pos(sp.lo);
|
|
base::MRExpr(mk_base_str(cx, sp, filename))
|
|
}
|
|
|
|
pub fn expand_stringify(cx: ext_ctxt, sp: span, tts: ~[ast::token_tree])
|
|
-> base::MacResult {
|
|
let s = pprust::tts_to_str(tts, cx.parse_sess().interner);
|
|
base::MRExpr(mk_base_str(cx, sp, s))
|
|
}
|
|
|
|
pub fn expand_mod(cx: ext_ctxt, sp: span, tts: ~[ast::token_tree])
|
|
-> base::MacResult {
|
|
base::check_zero_tts(cx, sp, tts, "module_path!");
|
|
base::MRExpr(mk_base_str(cx, sp,
|
|
str::connect(cx.mod_path().map(
|
|
|x| cx.str_of(*x)), ~"::")))
|
|
}
|
|
|
|
pub fn expand_include(cx: ext_ctxt, sp: span, tts: ~[ast::token_tree])
|
|
-> base::MacResult {
|
|
let file = get_single_str_from_tts(cx, sp, tts, "include!");
|
|
let p = parse::new_sub_parser_from_file(
|
|
cx.parse_sess(), cx.cfg(),
|
|
&res_rel_file(cx, sp, &Path(file)), sp);
|
|
base::MRExpr(p.parse_expr())
|
|
}
|
|
|
|
pub fn expand_include_str(cx: ext_ctxt, sp: span, tts: ~[ast::token_tree])
|
|
-> base::MacResult {
|
|
let file = get_single_str_from_tts(cx, sp, tts, "include_str!");
|
|
let res = io::read_whole_file_str(&res_rel_file(cx, sp, &Path(file)));
|
|
match res {
|
|
result::Ok(_) => { /* Continue. */ }
|
|
result::Err(ref e) => {
|
|
cx.parse_sess().span_diagnostic.handler().fatal((*e));
|
|
}
|
|
}
|
|
|
|
base::MRExpr(mk_base_str(cx, sp, result::unwrap(res)))
|
|
}
|
|
|
|
pub fn expand_include_bin(cx: ext_ctxt, sp: span, tts: ~[ast::token_tree])
|
|
-> base::MacResult {
|
|
let file = get_single_str_from_tts(cx, sp, tts, "include_bin!");
|
|
match io::read_whole_file(&res_rel_file(cx, sp, &Path(file))) {
|
|
result::Ok(src) => {
|
|
let u8_exprs = vec::map(src, |char| {
|
|
mk_u8(cx, sp, *char)
|
|
});
|
|
base::MRExpr(mk_base_vec_e(cx, sp, u8_exprs))
|
|
}
|
|
result::Err(ref e) => {
|
|
cx.parse_sess().span_diagnostic.handler().fatal((*e))
|
|
}
|
|
}
|
|
}
|
|
|
|
fn res_rel_file(cx: ext_ctxt, sp: codemap::span, arg: &Path) -> Path {
|
|
// NB: relative paths are resolved relative to the compilation unit
|
|
if !arg.is_absolute {
|
|
let cu = Path(cx.codemap().span_to_filename(sp));
|
|
cu.dir_path().push_many(arg.components)
|
|
} else {
|
|
copy *arg
|
|
}
|
|
}
|
|
|
|
//
|
|
// Local Variables:
|
|
// mode: rust
|
|
// fill-column: 78;
|
|
// indent-tabs-mode: nil
|
|
// c-basic-offset: 4
|
|
// buffer-file-coding-system: utf-8-unix
|
|
// End:
|
|
//
|