[MSCTF][SDK] Add stubs for CRange (#8096)

This PR is just a step, but a slightly
great one for OS development history.
JIRA issue: CORE-19361
- Add IAnchor interface into textstor.idl.
- Fix ITfRangeAnchor interface (that
  was wrong).
- Delete range.c.
- Add range.cpp.
- Add CRange class as stubs.

base/ctf/msctf/range.h

@@ -0,0 +1,141 @@
+#pragma once
+
+DEFINE_GUID(IID_PRIV_CRANGE, 0xB68832F0, 0x34B9, 0x11D3, 0xA7, 0x45, 0x00, 0x50, 0x04, 0x0A, 0xB4, 0x07);
+
+class CRange
+    : public ITfRangeACP
+    , public ITfRangeAnchor
+    , public ITfSource
+{
+protected:
+    DWORD m_dwLockType;
+    IAnchor *m_pAnchorStart;
+    IAnchor *m_pAnchorEnd;
+    CInputContext *m_pInputContext;
+    DWORD m_dwCookie;
+    TfGravity m_gravity;
+    LONG m_cRefs;
+
+public:
+    CRange(
+        _In_ CInputContext *pIC,
+        _In_ DWORD dwLockType,
+        _In_ IAnchor *pAnchorStart,
+        _In_ IAnchor *pAnchorEnd,
+        _In_ TfGravity gravity);
+
+    virtual ~CRange();
+
+    // ** IUnknown methods **
+    STDMETHODIMP QueryInterface(REFIID riid, void **ppvObj) override;
+    STDMETHODIMP_(ULONG) AddRef() override;
+    STDMETHODIMP_(ULONG) Release() override;
+
+    // ** ITfRange methods **
+    STDMETHODIMP GetText(
+        _In_ TfEditCookie ec,
+        _In_ DWORD dwFlags,
+        _Out_ WCHAR *pchText,
+        _In_ ULONG cchMax,
+        _Out_ ULONG *pcch) override;
+    STDMETHODIMP SetText(
+        _In_ TfEditCookie ec,
+        _In_ DWORD dwFlags,
+        _In_ const WCHAR *pchText,
+        _In_ LONG cch) override;
+    STDMETHODIMP GetFormattedText(
+        _In_ TfEditCookie ec,
+        _Out_ IDataObject **ppDataObject) override;
+    STDMETHODIMP GetEmbedded(
+        _In_ TfEditCookie ec,
+        _In_ REFGUID rguidService,
+        _In_ REFIID riid,
+        _Out_ IUnknown **ppunk) override;
+    STDMETHODIMP InsertEmbedded(
+        _In_ TfEditCookie ec,
+        _In_ DWORD dwFlags,
+        _In_ IDataObject *pDataObject) override;
+    STDMETHODIMP ShiftStart(
+        _In_ TfEditCookie ec,
+        _In_ LONG cchReq,
+        _Out_ LONG *pcch,
+        _In_ const TF_HALTCOND *pHalt) override;
+    STDMETHODIMP ShiftEnd(
+        _In_ TfEditCookie ec,
+        _In_ LONG cchReq,
+        _Out_ LONG *pcch,
+        _In_ const TF_HALTCOND *pHalt) override;
+    STDMETHODIMP ShiftStartToRange(
+        _In_ TfEditCookie ec,
+        _In_ ITfRange *pRange,
+        _In_ TfAnchor aPos) override;
+    STDMETHODIMP ShiftEndToRange(
+        _In_ TfEditCookie ec,
+        _In_ ITfRange *pRange,
+        _In_ TfAnchor aPos) override;
+    STDMETHODIMP ShiftStartRegion(
+        _In_ TfEditCookie ec,
+        _In_ TfShiftDir dir,
+        _Out_ BOOL *pfNoRegion) override;
+    STDMETHODIMP ShiftEndRegion(
+        _In_ TfEditCookie ec,
+        _In_ TfShiftDir dir,
+        _Out_ BOOL *pfNoRegion) override;
+    STDMETHODIMP IsEmpty(_In_ TfEditCookie ec, _Out_ BOOL *pfEmpty) override;
+    STDMETHODIMP Collapse(_In_ TfEditCookie ec, _In_ TfAnchor aPos) override;
+    STDMETHODIMP IsEqualStart(
+        _In_ TfEditCookie ec,
+        _In_ ITfRange *pWith,
+        _In_ TfAnchor aPos,
+        _Out_ BOOL *pfEqual) override;
+    STDMETHODIMP IsEqualEnd(
+        _In_ TfEditCookie ec,
+        _In_ ITfRange *pWith,
+        _In_ TfAnchor aPos,
+        _Out_ BOOL *pfEqual) override;
+    STDMETHODIMP CompareStart(
+        _In_ TfEditCookie ec,
+        _In_ ITfRange *pWith,
+        _In_ TfAnchor aPos,
+        _Out_ LONG *plResult) override;
+    STDMETHODIMP CompareEnd(
+        _In_ TfEditCookie ec,
+        _In_ ITfRange *pWith,
+        _In_ TfAnchor aPos,
+        _Out_ LONG *plResult) override;
+    STDMETHODIMP AdjustForInsert(
+        _In_ TfEditCookie ec,
+        _In_ ULONG cchInsert,
+        _Out_ BOOL *pfInsertOk) override;
+    STDMETHODIMP GetGravity(_Out_ TfGravity *pgStart, _Out_ TfGravity *pgEnd) override;
+    STDMETHODIMP SetGravity(
+        _In_ TfEditCookie ec,
+        _In_ TfGravity gStart,
+        _In_ TfGravity gEnd) override;
+    STDMETHODIMP Clone(_Out_ ITfRange **ppClone) override;
+    STDMETHODIMP GetContext(_Out_ ITfContext **ppContext) override;
+
+    // ** ITfRangeACP methods **
+    STDMETHODIMP GetExtent(_Out_ LONG *pacpAnchor, _Out_ LONG *pcch) override;
+    STDMETHODIMP SetExtent(_In_ LONG acpAnchor, _In_ LONG cch) override;
+
+    // ** ITfRangeAnchor methods **
+    STDMETHODIMP GetExtent(_Out_ IAnchor **ppStart, _Out_ IAnchor **ppEnd) override;
+    STDMETHODIMP SetExtent(_In_ IAnchor *pAnchorStart, _In_ IAnchor *pAnchorEnd) override;
+
+    // ** ITfSource methods **
+    STDMETHODIMP AdviseSink(_In_ REFIID riid, _In_ IUnknown *punk, _Out_ DWORD *pdwCookie) override;
+    STDMETHODIMP UnadviseSink(_In_ DWORD dwCookie) override;
+
+protected:
+    CRange *_Clone();
+
+    HRESULT _IsEqualX(TfEditCookie ec, BOOL bEnd, ITfRange *pWith, TfAnchor aPos, BOOL *pfEqual);
+
+    HRESULT _CompareX(
+        TfEditCookie ec,
+        BOOL bEnd,
+        ITfRange *pWidth,
+        TfAnchor aPos,
+        LONG *plResult);
+};