With the attached patch rustc can parse:
------------
use std;
use std();
use std(name = "foo");
use std(name = "foo", bar = "zed");
fn main() {
}
------------
I am setting up a github account and repo, but for now the patch is attached
Questions:
*) Are use and imports allowed anywhere in the file?
*) How do I add a test that uses rustc?
*) Is there a syntax only mode? I had to add the main function to
prevent a crash.
Cheers,
Rafael
diff --git a/src/comp/front/parser.rs b/src/comp/front/parser.rs
index a3b0462..0020138 100644
--- a/src/comp/front/parser.rs
+++ b/src/comp/front/parser.rs
@@ -1445,9 +1445,62 @@ impure fn parse_item(parser p) -> @ast.item {
fail;
}
+impure fn parse_meta_item(parser p) {
+ auto ident = parse_ident(p);
+ expect(p, token.EQ);
+ alt (p.peek()) {
+ case (token.LIT_STR(?s)) {
+ p.bump();
+ }
+ case (_) {
+ p.err("foobar");
+ }
+ }
+}
+
+impure fn parse_meta(parser p) {
+ expect(p, token.LPAREN);
+ while (p.peek() != token.RPAREN) {
+ parse_meta_item(p);
+ while (p.peek() == token.COMMA) {
+ p.bump();
+ parse_meta_item(p);
+ }
+ }
+ expect(p, token.RPAREN);
+}
+
+impure fn parse_optional_meta(parser p) {
+ alt (p.peek()) {
+ case (token.LPAREN) {
+ ret parse_meta(p);
+ }
+ case (_) {
+ ret;
+ }
+ }
+}
+
+impure fn parse_use_and_imports(parser p) {
+ while (true) {
+ alt (p.peek()) {
+ case (token.USE) {
+ p.bump();
+ auto ident = parse_ident(p);
+ parse_optional_meta(p);
+ expect(p, token.SEMI);
+ }
+ case (_) {
+ ret;
+ }
+ }
+ }
+}
+
impure fn parse_crate(parser p) -> @ast.crate {
auto lo = p.get_span();
auto hi = lo;
+ parse_use_and_imports(p);
auto m = parse_mod_items(p, token.EOF);
ret @spanned(lo, hi, rec(module=m));
}
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