mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
/* -*- Mode: C++; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil -*- */
|
|
/* vim: set ts=4 sw=4 et tw=99: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef jspropertytree_h___
|
|
#define jspropertytree_h___
|
|
|
|
#include "js/HashTable.h"
|
|
|
|
namespace js {
|
|
|
|
ForwardDeclare(Shape);
|
|
struct StackShape;
|
|
|
|
struct ShapeHasher {
|
|
typedef RawShape Key;
|
|
typedef StackShape Lookup;
|
|
|
|
static inline HashNumber hash(const Lookup &l);
|
|
static inline bool match(Key k, const Lookup &l);
|
|
};
|
|
|
|
typedef HashSet<RawShape, ShapeHasher, SystemAllocPolicy> KidsHash;
|
|
|
|
class KidsPointer {
|
|
private:
|
|
enum {
|
|
SHAPE = 0,
|
|
HASH = 1,
|
|
TAG = 1
|
|
};
|
|
|
|
uintptr_t w;
|
|
|
|
public:
|
|
bool isNull() const { return !w; }
|
|
void setNull() { w = 0; }
|
|
|
|
bool isShape() const { return (w & TAG) == SHAPE && !isNull(); }
|
|
RawShape toShape() const {
|
|
JS_ASSERT(isShape());
|
|
return reinterpret_cast<RawShape>(w & ~uintptr_t(TAG));
|
|
}
|
|
void setShape(RawShape shape) {
|
|
JS_ASSERT(shape);
|
|
JS_ASSERT((reinterpret_cast<uintptr_t>(static_cast<RawShape>(shape)) & TAG) == 0);
|
|
w = reinterpret_cast<uintptr_t>(static_cast<RawShape>(shape)) | SHAPE;
|
|
}
|
|
|
|
bool isHash() const { return (w & TAG) == HASH; }
|
|
KidsHash *toHash() const {
|
|
JS_ASSERT(isHash());
|
|
return reinterpret_cast<KidsHash *>(w & ~uintptr_t(TAG));
|
|
}
|
|
void setHash(KidsHash *hash) {
|
|
JS_ASSERT(hash);
|
|
JS_ASSERT((reinterpret_cast<uintptr_t>(hash) & TAG) == 0);
|
|
w = reinterpret_cast<uintptr_t>(hash) | HASH;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void checkConsistency(RawShape aKid) const;
|
|
#endif
|
|
};
|
|
|
|
class PropertyTree
|
|
{
|
|
friend class ::JSFunction;
|
|
|
|
JSCompartment *compartment;
|
|
|
|
bool insertChild(JSContext *cx, RawShape parent, RawShape child);
|
|
|
|
PropertyTree();
|
|
|
|
public:
|
|
enum { MAX_HEIGHT = 128 };
|
|
|
|
PropertyTree(JSCompartment *comp)
|
|
: compartment(comp)
|
|
{
|
|
}
|
|
|
|
RawShape newShape(JSContext *cx);
|
|
RawShape getChild(JSContext *cx, Shape *parent, uint32_t nfixed, const StackShape &child);
|
|
|
|
#ifdef DEBUG
|
|
static void dumpShapes(JSRuntime *rt);
|
|
#endif
|
|
};
|
|
|
|
} /* namespace js */
|
|
|
|
#endif /* jspropertytree_h___ */
|