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import std::str;
import std::istr;
import std::option;
import std::option::some;
import std::option::none;
import syntax::ast;
import syntax::parse::token;
import syntax::parse::parser::parser;
import syntax::parse::parser::new_parser_from_file;
import syntax::parse::parser::parse_inner_attrs_and_next;
import syntax::parse::parser::parse_mod_items;
import syntax::parse::parser::SOURCE_FILE;
export eval_crate_directives_to_mod;
export mode_parse;
tag eval_mode { mode_depend; mode_parse; }
type ctx =
@{p: parser,
mode: eval_mode,
mutable deps: [istr],
sess: parser::parse_sess,
mutable chpos: uint,
mutable byte_pos: uint,
cfg: ast::crate_cfg};
fn eval_crate_directives(cx: ctx, cdirs: &[@ast::crate_directive],
prefix: &istr,
view_items: &mutable [@ast::view_item],
items: &mutable [@ast::item]) {
for sub_cdir: @ast::crate_directive in cdirs {
eval_crate_directive(cx, sub_cdir, prefix, view_items, items);
}
}
fn eval_crate_directives_to_mod(cx: ctx, cdirs: &[@ast::crate_directive],
prefix: &istr) -> ast::_mod {
let view_items: [@ast::view_item] = [];
let items: [@ast::item] = [];
eval_crate_directives(cx, cdirs, prefix, view_items, items);
ret {view_items: view_items, items: items};
}
fn eval_crate_directive(cx: ctx, cdir: @ast::crate_directive, prefix: &istr,
view_items: &mutable [@ast::view_item],
items: &mutable [@ast::item]) {
alt cdir.node {
ast::cdir_src_mod(id, file_opt, attrs) {
let file_path = id + ~".rs";
alt file_opt {
some(f) {
file_path = f;
}
none. { }
}
let full_path = if std::fs::path_is_absolute(file_path) {
file_path
} else {
prefix + std::fs::path_sep() + file_path
};
if cx.mode == mode_depend { cx.deps += [full_path]; ret; }
let p0 =
new_parser_from_file(cx.sess, cx.cfg,
full_path, cx.chpos,
cx.byte_pos, SOURCE_FILE);
let inner_attrs = parse_inner_attrs_and_next(p0);
let mod_attrs = attrs + inner_attrs.inner;
let first_item_outer_attrs = inner_attrs.next;
let m0 = parse_mod_items(p0, token::EOF, first_item_outer_attrs);
let i =
syntax::parse::parser::mk_item(p0, cdir.span.lo, cdir.span.hi, id,
ast::item_mod(m0), mod_attrs);
// Thread defids, chpos and byte_pos through the parsers
cx.chpos = p0.get_chpos();
cx.byte_pos = p0.get_byte_pos();
items += [i];
}
ast::cdir_dir_mod(id, dir_opt, cdirs, attrs) {
let path = id;
alt dir_opt {
some(d) {
path = d;
}
none. { }
}
let full_path =
if std::fs::path_is_absolute(path) {
path
} else {
prefix + std::fs::path_sep() + path
};
let m0 = eval_crate_directives_to_mod(cx, cdirs, full_path);
let i =
@{ident: id,
attrs: attrs,
id: cx.sess.next_id,
node: ast::item_mod(m0),
span: cdir.span};
cx.sess.next_id += 1;
items += [i];
}
ast::cdir_view_item(vi) { view_items += [vi]; }
ast::cdir_syntax(pth) { }
ast::cdir_auth(pth, eff) { }
}
}
//
// 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 $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
// End:
//
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