Use different syntax for checks that matter to typestate

This giant commit changes the syntax of Rust to use "assert" for
"check" expressions that didn't mean anything to the typestate
system, and continue using "check" for checks that are used as
part of typestate checking.

Most of the changes are just replacing "check" with "assert" in test
cases and rustc.

1 files changed, 6 insertions, 5 deletions

diff --git a/src/lib/_vec.rs b/src/lib/_vec.rs
index 126bf363..4761a867 100644
--- a/src/lib/_vec.rs
+++ b/src/lib/_vec.rs
@@ -131,7 +131,7 @@ fn len_set[T](array[T] v, uint n) {
 }
 
 fn buf_off[T](array[T] v, uint offset) -> vbuf {
-    check (offset < len[T](v));
+     assert (offset < len[T](v));
     ret rustrt.vec_buf[T](v, offset);
 }
 
@@ -149,9 +149,10 @@ fn last[T](array[T] v) -> option.t[T] {
 }
 
 // Returns elements from [start..end) from v.
+
 fn slice[T](array[T] v, uint start, uint end) -> vec[T] {
-    check (start <= end);
-    check (end <= len[T](v));
+    assert (start <= end);
+    assert (end <= len[T](v));
     auto result = alloc[T](end - start);
     let uint i = start;
     while (i < end) {
@@ -163,7 +164,7 @@ fn slice[T](array[T] v, uint start, uint end) -> vec[T] {
 
 fn shift[T](&mutable array[T] v) -> T {
     auto ln = len[T](v);
-    check(ln > 0u);
+    assert (ln > 0u);
     auto e = v.(0);
     v = slice[T](v, 1u, ln);
     ret e;
@@ -171,7 +172,7 @@ fn shift[T](&mutable array[T] v) -> T {
 
 fn pop[T](&mutable array[T] v) -> T {
     auto ln = len[T](v);
-    check(ln > 0u);
+    assert (ln > 0u);
     ln -= 1u;
     auto e = v.(ln);
     v = slice[T](v, 0u, ln);