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/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkDOM_DEFINED
#define SkDOM_DEFINED
#include "SkArenaAlloc.h"
#include "SkNoncopyable.h"
#include "SkScalar.h"
#include "SkTemplates.h"
#include "SkTypes.h"
struct SkDOMNode;
struct SkDOMAttr;
class SkDOMParser;
class SkStream;
class SkXMLParser;
class SkDOM : public SkNoncopyable {
public:
SkDOM();
~SkDOM();
typedef SkDOMNode Node;
typedef SkDOMAttr Attr;
/** Returns null on failure
*/
const Node* build(SkStream&);
const Node* copy(const SkDOM& dom, const Node* node);
const Node* getRootNode() const;
SkXMLParser* beginParsing();
const Node* finishParsing();
enum Type {
kElement_Type,
kText_Type
};
Type getType(const Node*) const;
const char* getName(const Node*) const;
const Node* getFirstChild(const Node*, const char elem[] = nullptr) const;
const Node* getNextSibling(const Node*, const char elem[] = nullptr) const;
const char* findAttr(const Node*, const char attrName[]) const;
const Attr* getFirstAttr(const Node*) const;
const Attr* getNextAttr(const Node*, const Attr*) const;
const char* getAttrName(const Node*, const Attr*) const;
const char* getAttrValue(const Node*, const Attr*) const;
// helpers for walking children
int countChildren(const Node* node, const char elem[] = nullptr) const;
// helpers for calling SkParse
bool findS32(const Node*, const char name[], int32_t* value) const;
bool findScalars(const Node*, const char name[], SkScalar value[], int count) const;
bool findHex(const Node*, const char name[], uint32_t* value) const;
bool findBool(const Node*, const char name[], bool*) const;
int findList(const Node*, const char name[], const char list[]) const;
bool findScalar(const Node* node, const char name[], SkScalar value[]) const {
return this->findScalars(node, name, value, 1);
}
bool hasAttr(const Node*, const char name[], const char value[]) const;
bool hasS32(const Node*, const char name[], int32_t value) const;
bool hasScalar(const Node*, const char name[], SkScalar value) const;
bool hasHex(const Node*, const char name[], uint32_t value) const;
bool hasBool(const Node*, const char name[], bool value) const;
class AttrIter {
public:
AttrIter(const SkDOM&, const Node*);
const char* next(const char** value);
private:
const Attr* fAttr;
const Attr* fStop;
};
private:
SkArenaAlloc fAlloc;
Node* fRoot;
std::unique_ptr<SkDOMParser> fParser;
typedef SkNoncopyable INHERITED;
};
#endif
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