Jacek Caban : jscript: Added void expression implementation.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 536573934afb2722fc5867c39233a283f378c227
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=536573934afb2722fc5867c39233a283f378c227

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Fri Sep 19 00:42:33 2008 +0200

jscript: Added void expression implementation.

---

 dlls/jscript/engine.c      |   27 ++++++++++++++++++++++++---
 dlls/jscript/tests/lang.js |    2 ++
 2 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/dlls/jscript/engine.c b/dlls/jscript/engine.c
index 80bc9d9..a526431 100644
--- a/dlls/jscript/engine.c
+++ b/dlls/jscript/engine.c
@@ -1939,12 +1939,33 @@ HRESULT delete_expression_eval(exec_ctx_t *ctx, expression_t *expr, DWORD flags,
     return E_NOTIMPL;
 }
 
-HRESULT void_expression_eval(exec_ctx_t *ctx, expression_t *expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
+/* ECMA-262 3rd Edition    11.4.2 */
+HRESULT void_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    unary_expression_t *expr = (unary_expression_t*)_expr;
+    exprval_t exprval;
+    VARIANT tmp;
+    HRESULT hres;
+
+    TRACE("\n");
+
+    hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
+    if(FAILED(hres))
+        return hres;
+
+    hres = exprval_to_value(ctx->parser->script, &exprval, ei, &tmp);
+    exprval_release(&exprval);
+    if(FAILED(hres))
+        return hres;
+
+    VariantClear(&tmp);
+
+    ret->type = EXPRVAL_VARIANT;
+    V_VT(&ret->u.var) = VT_EMPTY;
+    return S_OK;
 }
 
+/* ECMA-262 3rd Edition    11.4.3 */
 HRESULT typeof_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
 {
     unary_expression_t *expr = (unary_expression_t*)_expr;
diff --git a/dlls/jscript/tests/lang.js b/dlls/jscript/tests/lang.js
index 3b0d130..0ea4ef5 100644
--- a/dlls/jscript/tests/lang.js
+++ b/dlls/jscript/tests/lang.js
@@ -615,4 +615,6 @@ for(var fi=0; fi < 4; fi++)
     ok(fi < 4, "fi = " + fi);
 ok(fi === 4, "fi !== 4");
 
+ok((void 1) === undefined, "(void 1) !== undefined");
+
 reportSuccess();