Slight adjustments to shape, rename to type_glue.rs.

1 files changed, 0 insertions, 98 deletions

diff --git a/src/comp/middle/shape.rs b/src/comp/middle/shape.rs
deleted file mode 100644
index c11431e7..00000000
--- a/src/comp/middle/shape.rs
+++ /dev/null
@@ -1,98 +0,0 @@
-// The "shape" of a type is best defined as "how a value of a type looks from
-// the standpoint of a certain built-in operation".
-//
-// This is used to collapse glues that would otherwise be separate. For
-// instance, a boxed tuple of 3 ints and a boxed tuple of 3 uints look the
-// same as far as reference count manipulation is concerned, so they get the
-// same shape so that their reference count glues can be collapsed together.
-// To give another example, an int and float have the same (nonexistent!) glue
-// as far as reference counting is concerned, since they aren't reference
-// counted.
-
-import front::ast;
-import middle::trans::variant_info;
-import middle::ty;
-
-type variant_getter = fn(&ast::def_id) -> vec[variant_info];
-
-
-// Reference counting shapes.
-
-mod rc {
-    // TODO: Re-export, so that users can just say shape::rc.
-    // FIXME: The bottom two should be just "vec[rc]", but that causes an
-    // infinite loop in trans.
-    tag rc {
-        rs_none;                        // No reference count.
-        rs_ref;                         // Reference counted box.
-        rs_tag(vec[@rc]);               // Discriminated union.
-        rs_tup(vec[@rc]);               // Tuple.
-    }
-
-    fn shape_of(&ty::ctxt tcx, variant_getter getter, ty::t t) -> rc {
-        alt (ty::struct(tcx, t)) {
-            // TODO: Or-patterns
-            case (ty::ty_nil) { ret rs_none; }
-            case (ty::ty_bool) { ret rs_none; }
-            case (ty::ty_int) { ret rs_none; }
-            case (ty::ty_uint) { ret rs_none; }
-            case (ty::ty_machine(_)) { ret rs_none; }
-            case (ty::ty_char) { ret rs_none; }
-            case (ty::ty_str) { ret rs_none; }
-            case (ty::ty_tag(?did, ?params)) {
-                let vec[@rc] result = vec();
-
-                auto vinfos = getter(did);
-                for (variant_info vinfo in vinfos) {
-                    let vec[@rc] variant_rcs = vec();
-                    for (ty::t typ in vinfo.args) {
-                        auto ty_1 = ty::bind_params_in_type(tcx, typ);
-                        ty_1 = ty::substitute_type_params(tcx, params, ty_1);
-                        variant_rcs += vec(@shape_of(tcx, getter, ty_1));
-                    }
-                    result += vec(@rs_tup(variant_rcs));
-                }
-
-                ret rs_tag(result);
-            }
-            case (ty::ty_box(_)) { ret rs_ref; }
-            case (ty::ty_vec(_)) { ret rs_ref; }
-            case (ty::ty_port(_)) { ret rs_ref; }
-            case (ty::ty_chan(_)) { ret rs_ref; }
-            case (ty::ty_task) { ret rs_ref; }
-            case (ty::ty_tup(?mts)) {
-                let vec[@rc] result = vec();
-                for (ty::mt tm in mts) {
-                    result += vec(@shape_of(tcx, getter, tm.ty));
-                }
-                ret rs_tup(result);
-            }
-            case (ty::ty_rec(?fields)) {
-                let vec[@rc] result = vec();
-                for (ty::field fld in fields) {
-                    result += vec(@shape_of(tcx, getter, fld.mt.ty));
-                }
-                ret rs_tup(result);
-            }
-            case (ty::ty_fn(_, _, _)) { ret rs_ref; }
-            case (ty::ty_native_fn(_, _, _)) { ret rs_ref; }
-            case (ty::ty_obj(_)) { ret rs_ref; }
-            case (ty::ty_var(_)) { log_err "var in rc::shape_of()"; fail; }
-            case (ty::ty_local(_)) {
-                log_err "local in rc::shape_of()";
-                fail;
-            }
-            case (ty::ty_param(_)) {
-                log_err "param in rc::shape_of()";
-                fail;
-            }
-            case (ty::ty_bound_param(_)) {
-                log_err "bound param in rc::shape_of()";
-                fail;
-            }
-            case (ty::ty_type) { ret rs_ref; }
-            case (ty::ty_native) { ret rs_none; }
-        }
-    }
-}
-