[PATCH] vbscript: Implement IsDate().

[Robert Wilhelm]

Signed-off-by: Robert Wilhelm 
---
 dlls/vbscript/global.c      | 31 +++++++++++++++++++++++++++++--
 dlls/vbscript/tests/api.vbs | 13 +++++++++++++
 2 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/dlls/vbscript/global.c b/dlls/vbscript/global.c
index 90cfd557038..222e0534665 100644
--- a/dlls/vbscript/global.c
+++ b/dlls/vbscript/global.c
@@ -425,6 +425,25 @@ HRESULT to_int(VARIANT *v, int *ret)
     return S_OK;
 }

+static HRESULT to_date(VARIANT *v, DATE *ret)
+{
+    VARIANT r;
+    HRESULT hres;
+
+    V_VT(&r) = VT_EMPTY;
+    hres = VariantChangeType(&r, v, 0, VT_DATE);
+    if(FAILED(hres)) {
+        hres = VariantChangeType(&r, v, 0, VT_R8);
+        if(FAILED(hres))
+            return hres;
+        hres = VariantChangeType(&r, &r, 0, VT_DATE);
+        if(FAILED(hres))
+            return hres;
+    }
+    *ret = V_DATE(&r);
+    return S_OK;
+}
+
 static HRESULT to_double(VARIANT *v, double *ret)
 {
     VARIANT dst;
@@ -935,8 +954,16 @@ static HRESULT Global_VarType(BuiltinDisp *This, VARIANT *arg, unsigned args_cnt

static HRESULT Global_IsDate(BuiltinDisp *This, VARIANT *arg, unsigned args_cnt, VARIANT *res)
 {
-    FIXME("\n");
-    return E_NOTIMPL;
+    HRESULT hres;
+    DATE d;
+
+    TRACE("%s\n", debugstr_variant(arg));
+
+    assert(args_cnt == 1);
+
+    hres = to_date(arg, &d);
+
+    return return_bool(res, SUCCEEDED(hres));
 }

static HRESULT Global_IsEmpty(BuiltinDisp *This, VARIANT *arg, unsigned args_cnt, VARIANT *res)
diff --git a/dlls/vbscript/tests/api.vbs b/dlls/vbscript/tests/api.vbs
index be1d4a806c0..d70f95ce69b 100644
--- a/dlls/vbscript/tests/api.vbs
+++ b/dlls/vbscript/tests/api.vbs
@@ -181,6 +181,19 @@ Call ok(not isObject(4), "isObject(4) is true?")
 Call ok(not isObject("x"), "isObject(""x"") is true?")
 Call ok(not isObject(Null), "isObject(Null) is true?")

+Call ok(not isDate(new EmptyClass), "isDate(new EmptyClass) is true?")
+Set x = new EmptyClass
+Call ok(not isDate(x), "isDate(x) is true?")
+x = CDate(1)
+Call ok(isDate(x), "isDate(x) is not true?")
+Call ok(isDate(empty), "isDate(empty) is not true?")
+Call ok(not isDate(Nothing), "isDate(Nothing) is true?")
+Call ok(isDate(true), "isDate(true) is not true?")
+Call ok(isDate(4), "isDate(4) is not true?")
+Call ok(isDate("4"), "isDate(""4"") is not true?")
+Call ok(not isDate("x"), "isDate(""x"") is true?")
+Call ok(not isDate(Null), "isDate(Null) is true?")
+
 Call ok(not isEmpty(new EmptyClass), "isEmpty(new EmptyClass) is true?")
 Set x = new EmptyClass
 Call ok(not isEmpty(x), "isEmpty(x) is true?")
--
2.36.1