[PATCH 6/8] jscript: Implement WeakMap.has().

[Gabriel Ivăncescu]

From: Gabriel Ivăncescu

Signed-off-by: Gabriel Ivăncescu 
---
 dlls/jscript/set.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/dlls/jscript/set.c b/dlls/jscript/set.c
index 4066e0f24d1..2c7b2278b02 100644
--- a/dlls/jscript/set.c
+++ b/dlls/jscript/set.c
@@ -777,8 +777,20 @@ static HRESULT WeakMap_set(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigne
 static HRESULT WeakMap_has(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
         jsval_t *r)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    jsdisp_t *key = (argc >= 1 && is_object_instance(argv[0])) ? to_jsdisp(get_object(argv[0])) : NULL;
+    struct weakmap_entry *entry;
+    WeakMapInstance *weakmap;
+    HRESULT hres;
+
+    hres = get_weakmap_this(ctx, vthis, &weakmap);
+    if(FAILED(hres))
+        return hres;
+
+    TRACE("%p (%p)\n", weakmap, key);
+
+    entry = get_weakmap_entry(weakmap, key);
+    if(r) *r = jsval_bool(!!entry);
+    return S_OK;
 }

static HRESULT WeakMap_value(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,