Robert Shearman : widl: Do constant folding for the sizeof operator on simple types.

[Alexandre Julliard]

Module: wine
Branch: refs/heads/master
Commit: 513996fde4a410df154e042166950a391d87c514
URL:    http://source.winehq.org/git/?p=wine.git;a=commit;h=513996fde4a410df154e042166950a391d87c514

Author: Robert Shearman <rob at codeweavers.com>
Date:   Tue Jan 31 18:06:25 2006 +0100

widl: Do constant folding for the sizeof operator on simple types.

---

 tools/widl/parser.y |   29 +++++++++++++++++++++++++++++
 1 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/tools/widl/parser.y b/tools/widl/parser.y
index 49532a0..15f1367 100644
--- a/tools/widl/parser.y
+++ b/tools/widl/parser.y
@@ -877,6 +877,35 @@ static expr_t *make_exprt(enum expr_type
   e->is_const = FALSE;
   INIT_LINK(e);
   /* check for cast of constant expression */
+  if (type == EXPR_SIZEOF) {
+    switch (tref->ref->type) {
+      case RPC_FC_BYTE:
+      case RPC_FC_CHAR:
+      case RPC_FC_SMALL:
+      case RPC_FC_USMALL:
+        e->is_const = TRUE;
+        e->cval = 1;
+        break;
+      case RPC_FC_WCHAR:
+      case RPC_FC_USHORT:
+      case RPC_FC_SHORT:
+        e->is_const = TRUE;
+        e->cval = 2;
+        break;
+      case RPC_FC_LONG:
+      case RPC_FC_ULONG:
+      case RPC_FC_FLOAT:
+      case RPC_FC_ERROR_STATUS_T:
+        e->is_const = TRUE;
+        e->cval = 4;
+        break;
+      case RPC_FC_HYPER:
+      case RPC_FC_DOUBLE:
+        e->is_const = TRUE;
+        e->cval = 8;
+        break;
+    }
+  }
   if (type == EXPR_CAST && expr->is_const) {
     e->is_const = TRUE;
     e->cval = expr->cval;