a93a14a998
This was created by looking at warnings produced by clang's -Wzero-as-null-pointer-constant. This updates most issues in Skia code. However, there are places where GL and Vulkan want pointer values which are explicitly 0, external headers which use NULL directly, and possibly more uses in un-compiled sources (for other platforms). Change-Id: Id22fbac04d5c53497a53d734f0896b4f06fe8345 Reviewed-on: https://skia-review.googlesource.com/39521 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Ben Wagner <bungeman@google.com>
120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkDataTable_DEFINED
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#define SkDataTable_DEFINED
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#include "../private/SkTDArray.h"
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#include "SkData.h"
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#include "SkString.h"
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/**
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* Like SkData, SkDataTable holds an immutable data buffer. The data buffer is
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* organized into a table of entries, each with a length, so the entries are
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* not required to all be the same size.
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*/
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class SK_API SkDataTable : public SkRefCnt {
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public:
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/**
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* Returns true if the table is empty (i.e. has no entries).
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*/
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bool isEmpty() const { return 0 == fCount; }
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/**
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* Return the number of entries in the table. 0 for an empty table
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*/
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int count() const { return fCount; }
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/**
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* Return the size of the index'th entry in the table. The caller must
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* ensure that index is valid for this table.
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*/
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size_t atSize(int index) const;
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/**
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* Return a pointer to the data of the index'th entry in the table.
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* The caller must ensure that index is valid for this table.
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*
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* @param size If non-null, this returns the byte size of this entry. This
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* will be the same value that atSize(index) would return.
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*/
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const void* at(int index, size_t* size = nullptr) const;
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template <typename T>
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const T* atT(int index, size_t* size = nullptr) const {
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return reinterpret_cast<const T*>(this->at(index, size));
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}
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/**
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* Returns the index'th entry as a c-string, and assumes that the trailing
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* null byte had been copied into the table as well.
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*/
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const char* atStr(int index) const {
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size_t size;
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const char* str = this->atT<const char>(index, &size);
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SkASSERT(strlen(str) + 1 == size);
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return str;
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}
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typedef void (*FreeProc)(void* context);
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static sk_sp<SkDataTable> MakeEmpty();
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/**
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* Return a new DataTable that contains a copy of the data stored in each
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* "array".
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*
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* @param ptrs array of points to each element to be copied into the table.
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* @param sizes array of byte-lengths for each entry in the corresponding
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* ptrs[] array.
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* @param count the number of array elements in ptrs[] and sizes[] to copy.
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*/
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static sk_sp<SkDataTable> MakeCopyArrays(const void * const * ptrs,
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const size_t sizes[], int count);
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/**
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* Return a new table that contains a copy of the data in array.
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*
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* @param array contiguous array of data for all elements to be copied.
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* @param elemSize byte-length for a given element.
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* @param count the number of entries to be copied out of array. The number
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* of bytes that will be copied is count * elemSize.
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*/
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static sk_sp<SkDataTable> MakeCopyArray(const void* array, size_t elemSize, int count);
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static sk_sp<SkDataTable> MakeArrayProc(const void* array, size_t elemSize, int count,
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FreeProc proc, void* context);
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private:
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struct Dir {
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const void* fPtr;
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uintptr_t fSize;
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};
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int fCount;
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size_t fElemSize;
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union {
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const Dir* fDir;
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const char* fElems;
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} fU;
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FreeProc fFreeProc;
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void* fFreeProcContext;
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SkDataTable();
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SkDataTable(const void* array, size_t elemSize, int count,
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FreeProc, void* context);
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SkDataTable(const Dir*, int count, FreeProc, void* context);
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virtual ~SkDataTable();
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friend class SkDataTableBuilder; // access to Dir
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typedef SkRefCnt INHERITED;
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};
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#endif
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