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Parse 'import' directives in rustc.

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This commit is contained in:
Rafael Ávila de Espíndola 2010-12-24 23:25:02 -05:00 committed by Graydon Hoare
parent 8d2fdac93b
commit f900792fa3
2 changed files with 51 additions and 0 deletions
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44
src/comp/front/parser.rs
View File

@ -1562,6 +1562,45 @@ impure fn parse_optional_meta(parser p) {
}
}
impure fn parse_rest_import_name(parser p, ast.ident id) {
while (p.peek() != token.SEMI) {
expect(p, token.DOT);
parse_ident(p);
}
}
impure fn parse_full_import_name(parser p) {
alt (p.peek()) {
case (token.IDENT(?ident)) {
p.bump();
parse_rest_import_name(p, ident);
}
case (_) {
p.err("expecting an identifier");
}
}
}
impure fn parse_import(parser p) {
alt (p.peek()) {
case (token.IDENT(?ident)) {
p.bump();
alt (p.peek()) {
case (token.EQ) {
p.bump();
parse_full_import_name(p);
}
case (_) {
parse_rest_import_name(p, ident);
}
}
}
case (_) {
p.err("expecting an identifier");
}
}
}
impure fn parse_use_and_imports(parser p) {
while (true) {
alt (p.peek()) {
@ -1571,6 +1610,11 @@ impure fn parse_use_and_imports(parser p) {
parse_optional_meta(p);
expect(p, token.SEMI);
}
case (token.IMPORT) {
p.bump();
parse_import(p);
expect(p, token.SEMI);
}
case (_) {
ret;
}

7
src/test/run-pass/use.rs
View File

@ -3,11 +3,18 @@ use libc();
use zed(name = "std");
use bar(name = "std", ver = "0.0.1");
import std._str;
import x = std._str;
mod baz {
use std;
use libc();
use zed(name = "std");
use bar(name = "std", ver = "0.0.1");
import std._str;
import x = std._str;
}
fn main() {