removed eval.rs: dead code
@brson confirms that eval.rs is now dead code
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John Clements
parent
48e7bda826
commit
27700472b9
1 changed files with 0 additions and 174 deletions
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@ -1,174 +0,0 @@
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// Copyright 2012 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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use parser::Parser;
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use attr::parser_attr;
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use codemap::{span, mk_sp};
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type ctx =
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@{sess: parse::parse_sess,
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cfg: ast::crate_cfg};
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fn eval_crate_directives(cx: ctx,
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cdirs: ~[@ast::crate_directive],
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prefix: &Path,
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view_items: &mut~[@ast::view_item],
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items: &mut~[@ast::item]) {
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for cdirs.each |sub_cdir| {
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eval_crate_directive(cx, *sub_cdir, prefix, view_items, items);
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}
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}
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pub fn eval_crate_directives_to_mod(cx: ctx, cdirs: ~[@ast::crate_directive],
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prefix: &Path, suffix: &Option<Path>)
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-> (ast::_mod, ~[ast::attribute]) {
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let (cview_items, citems, cattrs)
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= parse_companion_mod(cx, prefix, suffix);
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let mut view_items: ~[@ast::view_item] = ~[];
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let mut items: ~[@ast::item] = ~[];
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eval_crate_directives(cx, cdirs, prefix, &mut view_items, &mut items);
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return ({view_items: vec::append(view_items, cview_items),
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items: vec::append(items, citems)},
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cattrs);
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}
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/*
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The 'companion mod'. So .rc crates and directory mod crate directives define
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modules but not a .rs file to fill those mods with stuff. The companion mod is
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a convention for location a .rs file to go with them. For .rc files the
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companion mod is a .rs file with the same name; for directory mods the
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companion mod is a .rs file with the same name as the directory.
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We build the path to the companion mod by combining the prefix and the
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optional suffix then adding the .rs extension.
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*/
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fn parse_companion_mod(cx: ctx, prefix: &Path, suffix: &Option<Path>)
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-> (~[@ast::view_item], ~[@ast::item], ~[ast::attribute]) {
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fn companion_file(prefix: &Path, suffix: &Option<Path>) -> Path {
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return match *suffix {
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option::Some(s) => prefix.push_many(s.components),
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option::None => copy *prefix
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}.with_filetype("rs");
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}
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fn file_exists(path: &Path) -> bool {
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// Crude, but there's no lib function for this and I'm not
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// up to writing it just now
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match io::file_reader(path) {
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result::Ok(_) => true,
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result::Err(_) => false
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}
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}
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let modpath = &companion_file(prefix, suffix);
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if file_exists(modpath) {
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debug!("found companion mod");
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// XXX: Using a dummy span, but this code will go away soon
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let p0 = new_sub_parser_from_file(cx.sess, cx.cfg,
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modpath,
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codemap::dummy_sp());
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let (inner, next) = p0.parse_inner_attrs_and_next();
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let m0 = p0.parse_mod_items(token::EOF, next);
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return (m0.view_items, m0.items, inner);
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} else {
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return (~[], ~[], ~[]);
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}
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}
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fn cdir_path_opt(default: ~str, attrs: ~[ast::attribute]) -> ~str {
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match ::attr::first_attr_value_str_by_name(attrs, ~"path") {
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Some(d) => d,
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None => default
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}
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}
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pub fn eval_src_mod(cx: ctx, prefix: &Path,
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outer_attrs: ~[ast::attribute],
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id: ast::ident, sp: span)
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-> (ast::item_, ~[ast::attribute]) {
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let file_path = Path(cdir_path_opt(
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cx.sess.interner.get(id) + ~".rs", outer_attrs));
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eval_src_mod_from_path(cx, prefix, &file_path, outer_attrs, sp)
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}
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pub fn eval_src_mod_from_path(cx: ctx, prefix: &Path, path: &Path,
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outer_attrs: ~[ast::attribute],
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sp: span)
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-> (ast::item_, ~[ast::attribute]) {
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let full_path = if path.is_absolute {
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copy *path
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} else {
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prefix.push_many(path.components)
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};
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let p0 =
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new_sub_parser_from_file(cx.sess, cx.cfg,
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&full_path, sp);
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let (inner, next) = p0.parse_inner_attrs_and_next();
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let mod_attrs = vec::append(outer_attrs, inner);
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let first_item_outer_attrs = next;
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let m0 = p0.parse_mod_items(token::EOF, first_item_outer_attrs);
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return (ast::item_mod(m0), mod_attrs);
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}
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// XXX: Duplicated from parser.rs
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fn mk_item(ctx: ctx, lo: BytePos, hi: BytePos, +ident: ast::ident,
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+node: ast::item_, vis: ast::visibility,
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+attrs: ~[ast::attribute]) -> @ast::item {
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return @{ident: ident,
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attrs: attrs,
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id: next_node_id(ctx.sess),
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node: node,
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vis: vis,
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span: mk_sp(lo, hi)};
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}
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fn eval_crate_directive(cx: ctx, cdir: @ast::crate_directive, prefix: &Path,
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view_items: &mut ~[@ast::view_item],
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items: &mut ~[@ast::item]) {
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match cdir.node {
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ast::cdir_src_mod(vis, id, attrs) => {
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let (m, mod_attrs) = eval_src_mod(cx, prefix, attrs, id, cdir.span);
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let i = mk_item(cx, cdir.span.lo, cdir.span.hi,
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/* FIXME (#2543) */ copy id,
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m, vis, mod_attrs);
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items.push(i);
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}
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ast::cdir_dir_mod(vis, id, cdirs, attrs) => {
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let path = Path(cdir_path_opt(*cx.sess.interner.get(id), attrs));
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let full_path = if path.is_absolute {
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copy path
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} else {
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prefix.push_many(path.components)
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};
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let (m0, a0) = eval_crate_directives_to_mod(
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cx, cdirs, &full_path, &None);
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let i =
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@{ident: /* FIXME (#2543) */ copy id,
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attrs: vec::append(attrs, a0),
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id: cx.sess.next_id,
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node: ast::item_mod(m0),
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vis: vis,
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span: cdir.span};
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cx.sess.next_id += 1;
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items.push(i);
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}
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ast::cdir_view_item(vi) => view_items.push(vi),
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}
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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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//
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