diff options
Diffstat (limited to 'src/libsyntax/parse')
| -rw-r--r-- | src/libsyntax/parse/eval.rs | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/src/libsyntax/parse/eval.rs b/src/libsyntax/parse/eval.rs deleted file mode 100644 index 5d44db084d6..00000000000 --- a/src/libsyntax/parse/eval.rs +++ /dev/null @@ -1,174 +0,0 @@ -// 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 parser::Parser; -use attr::parser_attr; -use codemap::{span, mk_sp}; - -type ctx = - @{sess: parse::parse_sess, - cfg: ast::crate_cfg}; - -fn eval_crate_directives(cx: ctx, - cdirs: ~[@ast::crate_directive], - prefix: &Path, - view_items: &mut~[@ast::view_item], - items: &mut~[@ast::item]) { - for cdirs.each |sub_cdir| { - eval_crate_directive(cx, *sub_cdir, prefix, view_items, items); - } -} - -pub fn eval_crate_directives_to_mod(cx: ctx, cdirs: ~[@ast::crate_directive], - prefix: &Path, suffix: &Option<Path>) - -> (ast::_mod, ~[ast::attribute]) { - let (cview_items, citems, cattrs) - = parse_companion_mod(cx, prefix, suffix); - let mut view_items: ~[@ast::view_item] = ~[]; - let mut items: ~[@ast::item] = ~[]; - eval_crate_directives(cx, cdirs, prefix, &mut view_items, &mut items); - return ({view_items: vec::append(view_items, cview_items), - items: vec::append(items, citems)}, - cattrs); -} - -/* -The 'companion mod'. So .rc crates and directory mod crate directives define -modules but not a .rs file to fill those mods with stuff. The companion mod is -a convention for location a .rs file to go with them. For .rc files the -companion mod is a .rs file with the same name; for directory mods the -companion mod is a .rs file with the same name as the directory. - -We build the path to the companion mod by combining the prefix and the -optional suffix then adding the .rs extension. -*/ -fn parse_companion_mod(cx: ctx, prefix: &Path, suffix: &Option<Path>) - -> (~[@ast::view_item], ~[@ast::item], ~[ast::attribute]) { - - fn companion_file(prefix: &Path, suffix: &Option<Path>) -> Path { - return match *suffix { - option::Some(s) => prefix.push_many(s.components), - option::None => copy *prefix - }.with_filetype("rs"); - } - - fn file_exists(path: &Path) -> bool { - // Crude, but there's no lib function for this and I'm not - // up to writing it just now - match io::file_reader(path) { - result::Ok(_) => true, - result::Err(_) => false - } - } - - let modpath = &companion_file(prefix, suffix); - if file_exists(modpath) { - debug!("found companion mod"); - // XXX: Using a dummy span, but this code will go away soon - let p0 = new_sub_parser_from_file(cx.sess, cx.cfg, - modpath, - codemap::dummy_sp()); - let (inner, next) = p0.parse_inner_attrs_and_next(); - let m0 = p0.parse_mod_items(token::EOF, next); - return (m0.view_items, m0.items, inner); - } else { - return (~[], ~[], ~[]); - } -} - -fn cdir_path_opt(default: ~str, attrs: ~[ast::attribute]) -> ~str { - match ::attr::first_attr_value_str_by_name(attrs, ~"path") { - Some(d) => d, - None => default - } -} - -pub fn eval_src_mod(cx: ctx, prefix: &Path, - outer_attrs: ~[ast::attribute], - id: ast::ident, sp: span) - -> (ast::item_, ~[ast::attribute]) { - let file_path = Path(cdir_path_opt( - cx.sess.interner.get(id) + ~".rs", outer_attrs)); - eval_src_mod_from_path(cx, prefix, &file_path, outer_attrs, sp) -} - -pub fn eval_src_mod_from_path(cx: ctx, prefix: &Path, path: &Path, - outer_attrs: ~[ast::attribute], - sp: span) - -> (ast::item_, ~[ast::attribute]) { - let full_path = if path.is_absolute { - copy *path - } else { - prefix.push_many(path.components) - }; - let p0 = - new_sub_parser_from_file(cx.sess, cx.cfg, - &full_path, sp); - let (inner, next) = p0.parse_inner_attrs_and_next(); - let mod_attrs = vec::append(outer_attrs, inner); - let first_item_outer_attrs = next; - let m0 = p0.parse_mod_items(token::EOF, first_item_outer_attrs); - return (ast::item_mod(m0), mod_attrs); -} - -// XXX: Duplicated from parser.rs -fn mk_item(ctx: ctx, lo: BytePos, hi: BytePos, +ident: ast::ident, - +node: ast::item_, vis: ast::visibility, - +attrs: ~[ast::attribute]) -> @ast::item { - return @{ident: ident, - attrs: attrs, - id: next_node_id(ctx.sess), - node: node, - vis: vis, - span: mk_sp(lo, hi)}; -} - -fn eval_crate_directive(cx: ctx, cdir: @ast::crate_directive, prefix: &Path, - view_items: &mut ~[@ast::view_item], - items: &mut ~[@ast::item]) { - match cdir.node { - ast::cdir_src_mod(vis, id, attrs) => { - let (m, mod_attrs) = eval_src_mod(cx, prefix, attrs, id, cdir.span); - let i = mk_item(cx, cdir.span.lo, cdir.span.hi, - /* FIXME (#2543) */ copy id, - m, vis, mod_attrs); - items.push(i); - } - ast::cdir_dir_mod(vis, id, cdirs, attrs) => { - let path = Path(cdir_path_opt(*cx.sess.interner.get(id), attrs)); - let full_path = if path.is_absolute { - copy path - } else { - prefix.push_many(path.components) - }; - let (m0, a0) = eval_crate_directives_to_mod( - cx, cdirs, &full_path, &None); - let i = - @{ident: /* FIXME (#2543) */ copy id, - attrs: vec::append(attrs, a0), - id: cx.sess.next_id, - node: ast::item_mod(m0), - vis: vis, - span: cdir.span}; - cx.sess.next_id += 1; - items.push(i); - } - ast::cdir_view_item(vi) => view_items.push(vi), - } -} -// -// Local Variables: -// mode: rust -// fill-column: 78; -// indent-tabs-mode: nil -// c-basic-offset: 4 -// buffer-file-coding-system: utf-8-unix -// End: -// |