[PATCH 04/10] jscript: Implement ScriptTypeInfo_GetFuncDesc.

[Gabriel Ivăncescu]

Signed-off-by: Gabriel Ivăncescu <gabrielopcode at gmail.com>
---
 dlls/jscript/dispex.c   | 32 +++++++++++++++++++++++++++++---
 dlls/jscript/function.c |  8 ++++++++
 dlls/jscript/jscript.h  |  1 +
 3 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/dlls/jscript/dispex.c b/dlls/jscript/dispex.c
index 1f28538..5db7da6 100644
--- a/dlls/jscript/dispex.c
+++ b/dlls/jscript/dispex.c
@@ -719,10 +719,34 @@ static HRESULT WINAPI ScriptTypeInfo_GetTypeComp(ITypeInfo *iface, ITypeComp **p
 static HRESULT WINAPI ScriptTypeInfo_GetFuncDesc(ITypeInfo *iface, UINT index, FUNCDESC **ppFuncDesc)
 {
     ScriptTypeInfo *This = ScriptTypeInfo_from_ITypeInfo(iface);
+    struct typeinfo_func *func;
+    unsigned num_args, i;
+    FUNCDESC *desc;
 
-    FIXME("(%p)->(%u %p)\n", This, index, ppFuncDesc);
+    TRACE("(%p)->(%u %p)\n", This, index, ppFuncDesc);
 
-    return E_NOTIMPL;
+    if (!ppFuncDesc) return E_INVALIDARG;
+    if (index >= This->num_funcs) return TYPE_E_ELEMENTNOTFOUND;
+    func = &This->funcs[index];
+    get_source_function_params(func->disp, &num_args);
+
+    /* Store the parameter array after the FUNCDESC structure */
+    desc = heap_alloc_zero(sizeof(*desc) + sizeof(ELEMDESC) * num_args);
+    if (!desc) return E_OUTOFMEMORY;
+
+    desc->memid = prop_to_id(This->jsdisp, func->prop);
+    desc->funckind = FUNC_DISPATCH;
+    desc->invkind = INVOKE_FUNC;
+    desc->callconv = CC_STDCALL;
+    desc->cParams = num_args;
+    desc->elemdescFunc.tdesc.vt = VT_VARIANT;
+
+    if (num_args) desc->lprgelemdescParam = (ELEMDESC*)(desc + 1);
+    for (i = 0; i < num_args; i++)
+        desc->lprgelemdescParam[i].tdesc.vt = VT_VARIANT;
+
+    *ppFuncDesc = desc;
+    return S_OK;
 }
 
 static HRESULT WINAPI ScriptTypeInfo_GetVarDesc(ITypeInfo *iface, UINT index, VARDESC **ppVarDesc)
@@ -861,7 +885,9 @@ static void WINAPI ScriptTypeInfo_ReleaseFuncDesc(ITypeInfo *iface, FUNCDESC *pF
 {
     ScriptTypeInfo *This = ScriptTypeInfo_from_ITypeInfo(iface);
 
-    FIXME("(%p)->(%p)\n", This, pFuncDesc);
+    TRACE("(%p)->(%p)\n", This, pFuncDesc);
+
+    heap_free(pFuncDesc);
 }
 
 static void WINAPI ScriptTypeInfo_ReleaseVarDesc(ITypeInfo *iface, VARDESC *pVarDesc)
diff --git a/dlls/jscript/function.c b/dlls/jscript/function.c
index 98d1259..c2d058b 100644
--- a/dlls/jscript/function.c
+++ b/dlls/jscript/function.c
@@ -808,6 +808,14 @@ BOOL is_source_function(jsdisp_t *jsdisp)
     return function_from_jsdisp(jsdisp)->vtbl == &InterpretedFunctionVtbl;
 }
 
+BSTR *get_source_function_params(jsdisp_t *jsdisp, unsigned *param_cnt)
+{
+    InterpretedFunction *func = (InterpretedFunction*)function_from_jsdisp(jsdisp);
+
+    *param_cnt = func->func_code->param_cnt;
+    return func->func_code->params;
+}
+
 static HRESULT BindFunction_call(script_ctx_t *ctx, FunctionInstance *func, IDispatch *this_obj, unsigned flags,
          unsigned argc, jsval_t *argv, jsval_t *r)
 {
diff --git a/dlls/jscript/jscript.h b/dlls/jscript/jscript.h
index 91923f8..09ecfb4 100644
--- a/dlls/jscript/jscript.h
+++ b/dlls/jscript/jscript.h
@@ -304,6 +304,7 @@ HRESULT create_builtin_function(script_ctx_t*,builtin_invoke_t,const WCHAR*,cons
 HRESULT create_builtin_constructor(script_ctx_t*,builtin_invoke_t,const WCHAR*,const builtin_info_t*,DWORD,
         jsdisp_t*,jsdisp_t**) DECLSPEC_HIDDEN;
 BOOL is_source_function(jsdisp_t*) DECLSPEC_HIDDEN;
+BSTR *get_source_function_params(jsdisp_t*,unsigned*) DECLSPEC_HIDDEN;
 HRESULT Function_invoke(jsdisp_t*,IDispatch*,WORD,unsigned,jsval_t*,jsval_t*) DECLSPEC_HIDDEN;
 
 HRESULT Function_value(script_ctx_t*,vdisp_t*,WORD,unsigned,jsval_t*,jsval_t*) DECLSPEC_HIDDEN;
-- 
2.21.0