Jacek Caban : jscript: Support host objects in disp_cmp.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: dd5ac4c6afd68ad965cdaa285ab51ca7b5bd36d3
URL:    https://gitlab.winehq.org/wine/wine/-/commit/dd5ac4c6afd68ad965cdaa285ab51ca...

Author: Jacek Caban 
Date:   Sun Jun 30 23:24:21 2024 +0200

jscript: Support host objects in disp_cmp.

Based on patch by Gabriel Ivăncescu.

---

dlls/jscript/dispex.c  | 15 +++++++++++++++
 dlls/jscript/engine.c  | 20 +++++++++++++-------
 dlls/jscript/jscript.h |  1 +
 3 files changed, 29 insertions(+), 7 deletions(-)

diff --git a/dlls/jscript/dispex.c b/dlls/jscript/dispex.c
index 8c499fbd37b..26d89ab2b5e 100644
--- a/dlls/jscript/dispex.c
+++ b/dlls/jscript/dispex.c
@@ -3393,3 +3393,18 @@ HRESULT init_host_object(script_ctx_t *ctx, IWineJSDispatchHost *host_iface, IWi
     *ret = &host_obj->jsdisp.IWineJSDispatch_iface;
     return S_OK;
 }
+
+IWineJSDispatchHost *get_host_dispatch(IDispatch *disp)
+{
+    HostObject *host_obj;
+    jsdisp_t *jsdisp;
+
+    if(!(jsdisp = to_jsdisp(disp)))
+        return NULL;
+    if(jsdisp->builtin_info != &HostObject_info)
+        return NULL;
+
+    host_obj = HostObject_from_jsdisp(jsdisp);
+    IWineJSDispatchHost_AddRef(host_obj->host_iface);
+    return host_obj->host_iface;
+}
diff --git a/dlls/jscript/engine.c b/dlls/jscript/engine.c
index 2be22a9b526..12e53435f16 100644
--- a/dlls/jscript/engine.c
+++ b/dlls/jscript/engine.c
@@ -637,14 +637,20 @@ static HRESULT disp_cmp(IDispatch *disp1, IDispatch *disp2, BOOL *ret)
         return S_OK;
     }

-    hres = IDispatch_QueryInterface(disp1, &IID_IUnknown, (void**)&unk1);
-    if(FAILED(hres))
-        return hres;
+    unk1 = (IUnknown *)get_host_dispatch(disp1);
+    if(!unk1) {
+        hres = IDispatch_QueryInterface(disp1, &IID_IUnknown, (void**)&unk1);
+        if(FAILED(hres))
+            return hres;
+    }

-    hres = IDispatch_QueryInterface(disp2, &IID_IUnknown, (void**)&unk2);
-    if(FAILED(hres)) {
-        IUnknown_Release(unk1);
-        return hres;
+    unk2 = (IUnknown *)get_host_dispatch(disp2);
+    if(!unk2) {
+        hres = IDispatch_QueryInterface(disp2, &IID_IUnknown, (void**)&unk2);
+        if(FAILED(hres)) {
+            IUnknown_Release(unk1);
+            return hres;
+        }
     }

if(unk1 == unk2) {
diff --git a/dlls/jscript/jscript.h b/dlls/jscript/jscript.h
index a36291204b6..fdcead4a064 100644
--- a/dlls/jscript/jscript.h
+++ b/dlls/jscript/jscript.h
@@ -225,6 +225,7 @@ static inline IDispatchEx *to_dispex(jsdisp_t *jsdisp)

jsdisp_t *as_jsdisp(IDispatch*);
 jsdisp_t *to_jsdisp(IDispatch*);
+IWineJSDispatchHost *get_host_dispatch(IDispatch*);

jsdisp_t *jsdisp_addref(jsdisp_t*);
 ULONG jsdisp_release(jsdisp_t*);