From b453c3c72825f70499819d97b879c805cac1e5b1 Mon Sep 17 00:00:00 2001
From: Graydon Hoare <graydon@mozilla.com>
Date: Tue, 3 May 2011 15:50:56 -0700
Subject: Start sketching --depend support in rustc.

---
 src/comp/front/eval.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/comp/front/eval.rs')

diff --git a/src/comp/front/eval.rs b/src/comp/front/eval.rs
index 06fa9cea..a1b3392c 100644
--- a/src/comp/front/eval.rs
+++ b/src/comp/front/eval.rs
@@ -24,8 +24,15 @@ tag val {
     val_str(str);
 }
 
+tag eval_mode {
+    mode_depend;
+    mode_parse;
+}
+
 type env = vec[tup(ident, val)];
 type ctx = @rec(parser p,
+                eval_mode mode,
+                mutable vec[str] deps,
                 session.session sess,
                 mutable uint chpos);
 
@@ -383,6 +390,11 @@ fn eval_crate_directive(ctx cx,
 
             auto full_path = prefix + std.fs.path_sep() + file_path;
 
+            if (cx.mode == mode_depend) {
+                cx.deps += vec(full_path);
+                ret;
+            }
+
             auto start_id = cx.p.next_def_id();
             auto p0 = new_parser(cx.sess, e, start_id, full_path, cx.chpos);
             auto m0 = parse_mod_items(p0, token.EOF);
-- 
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