Move CFX_StringDataTemplate to StringDataTemplate

This CL renames CFX_StringDataTemplate to StringDataTemplate and moves
into the fxcrt namespace.

Bug: pdfium:898
Change-Id: I1c1e5ae674c3cca34fd595272e9eebc9346ed6ac
Reviewed-on: https://pdfium-review.googlesource.com/14618
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 0 insertions, 118 deletions

diff --git a/core/fxcrt/cfx_string_data_template.h b/core/fxcrt/cfx_string_data_template.h
deleted file mode 100644
index eabb608818..0000000000
--- a/core/fxcrt/cfx_string_data_template.h
+++ /dev/null
@@ -1,118 +0,0 @@
-// Copyright 2016 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#ifndef CORE_FXCRT_CFX_STRING_DATA_TEMPLATE_H_
-#define CORE_FXCRT_CFX_STRING_DATA_TEMPLATE_H_
-
-#include "core/fxcrt/fx_memory.h"
-#include "core/fxcrt/fx_system.h"
-#include "third_party/base/numerics/safe_math.h"
-
-template <typename CharType>
-class CFX_StringDataTemplate {
- public:
-  static CFX_StringDataTemplate* Create(FX_STRSIZE nLen) {
-    ASSERT(nLen > 0);
-
-    // Calculate space needed for the fixed portion of the struct plus the
-    // NUL char that is not included in |m_nAllocLength|.
-    int overhead =
-        offsetof(CFX_StringDataTemplate, m_String) + sizeof(CharType);
-    pdfium::base::CheckedNumeric<FX_STRSIZE> nSize = nLen;
-    nSize *= sizeof(CharType);
-    nSize += overhead;
-
-    // Now round to an 8-byte boundary. We'd expect that this is the minimum
-    // granularity of any of the underlying allocators, so there may be cases
-    // where we can save a re-alloc when adding a few characters to a string
-    // by using this otherwise wasted space.
-    nSize += 7;
-    nSize &= ~7;
-    FX_STRSIZE totalSize = nSize.ValueOrDie();
-    FX_STRSIZE usableLen = (totalSize - overhead) / sizeof(CharType);
-    ASSERT(usableLen >= nLen);
-
-    void* pData = pdfium::base::PartitionAllocGeneric(
-        gStringPartitionAllocator.root(), totalSize, "CFX_StringDataTemplate");
-    return new (pData) CFX_StringDataTemplate(nLen, usableLen);
-  }
-
-  static CFX_StringDataTemplate* Create(const CFX_StringDataTemplate& other) {
-    CFX_StringDataTemplate* result = Create(other.m_nDataLength);
-    result->CopyContents(other);
-    return result;
-  }
-
-  static CFX_StringDataTemplate* Create(const CharType* pStr, FX_STRSIZE nLen) {
-    CFX_StringDataTemplate* result = Create(nLen);
-    result->CopyContents(pStr, nLen);
-    return result;
-  }
-
-  void Retain() { ++m_nRefs; }
-  void Release() {
-    if (--m_nRefs <= 0)
-      pdfium::base::PartitionFreeGeneric(gStringPartitionAllocator.root(),
-                                         this);
-  }
-
-  bool CanOperateInPlace(FX_STRSIZE nTotalLen) const {
-    return m_nRefs <= 1 && nTotalLen <= m_nAllocLength;
-  }
-
-  void CopyContents(const CFX_StringDataTemplate& other) {
-    ASSERT(other.m_nDataLength <= m_nAllocLength);
-    memcpy(m_String, other.m_String,
-           (other.m_nDataLength + 1) * sizeof(CharType));
-  }
-
-  void CopyContents(const CharType* pStr, FX_STRSIZE nLen) {
-    ASSERT(nLen >= 0 && nLen <= m_nAllocLength);
-    memcpy(m_String, pStr, nLen * sizeof(CharType));
-    m_String[nLen] = 0;
-  }
-
-  void CopyContentsAt(FX_STRSIZE offset,
-                      const CharType* pStr,
-                      FX_STRSIZE nLen) {
-    ASSERT(offset >= 0 && nLen >= 0 && offset + nLen <= m_nAllocLength);
-    memcpy(m_String + offset, pStr, nLen * sizeof(CharType));
-    m_String[offset + nLen] = 0;
-  }
-
-  // To ensure ref counts do not overflow, consider the worst possible case:
-  // the entire address space contains nothing but pointers to this object.
-  // Since the count increments with each new pointer, the largest value is
-  // the number of pointers that can fit into the address space. The size of
-  // the address space itself is a good upper bound on it.
-  intptr_t m_nRefs;
-
-  // |FX_STRSIZE| is currently typedef'd as |int|.
-  // TODO(palmer): It should be a |size_t|, or at least unsigned.
-  // These lengths are in terms of number of characters, not bytes, and do not
-  // include the terminating NUL character, but the underlying buffer is sized
-  // to be capable of holding it.
-  FX_STRSIZE m_nDataLength;
-  FX_STRSIZE m_nAllocLength;
-
-  // Not really 1, variable size.
-  CharType m_String[1];
-
- private:
-  CFX_StringDataTemplate(FX_STRSIZE dataLen, FX_STRSIZE allocLen)
-      : m_nRefs(0), m_nDataLength(dataLen), m_nAllocLength(allocLen) {
-    ASSERT(dataLen >= 0);
-    ASSERT(dataLen <= allocLen);
-    m_String[dataLen] = 0;
-  }
-
-  ~CFX_StringDataTemplate() = delete;
-};
-
-extern template class CFX_StringDataTemplate<char>;
-extern template class CFX_StringDataTemplate<wchar_t>;
-
-#endif  // CORE_FXCRT_CFX_STRING_DATA_TEMPLATE_H_