* Red Hat Author(s): Behdad Esfahbod
*/
-#ifndef HB_OPEN_TYPES_PRIVATE_HH
-#define HB_OPEN_TYPES_PRIVATE_HH
+#ifndef HB_OPEN_TYPE_PRIVATE_HH
+#define HB_OPEN_TYPE_PRIVATE_HH
#include "hb-private.h"
#include "hb-blob.h"
-
-/* Table/script/language-system/feature/... not found */
-#define NO_INDEX ((unsigned int) 0xFFFF)
-
+HB_BEGIN_DECLS
+HB_END_DECLS
/*
* Casts
*/
-/* Cast to "const char *" and "char *" */
-template <typename Type>
-inline const char * CharP (const Type* X)
-{ return reinterpret_cast<const char *>(X); }
-template <typename Type>
-inline char * CharP (Type* X)
-{ return reinterpret_cast<char *>(X); }
-
/* Cast to struct T, reference to reference */
template<typename Type, typename TObject>
inline const Type& CastR(const TObject &X)
inline Type* CastP(TObject *X)
{ return reinterpret_cast<Type*> (X); }
-/* StructAtOffset<T>(X,Ofs) returns the struct T& that is placed at memory
- * location of X plus Ofs bytes. */
-template<typename Type, typename TObject>
-inline const Type& StructAtOffset(const TObject &X, unsigned int offset)
-{ return * reinterpret_cast<const Type*> (CharP(&X) + offset); }
-template<typename Type, typename TObject>
-inline Type& StructAtOffset(TObject &X, unsigned int offset)
-{ return * reinterpret_cast<Type*> (CharP(&X) + offset); }
+/* StructAtOffset<T>(P,Ofs) returns the struct T& that is placed at memory
+ * location pointed to by P plus Ofs bytes. */
+template<typename Type>
+inline const Type& StructAtOffset(const void *P, unsigned int offset)
+{ return * reinterpret_cast<const Type*> ((const char *) P + offset); }
+template<typename Type>
+inline Type& StructAtOffset(void *P, unsigned int offset)
+{ return * reinterpret_cast<Type*> ((char *) P + offset); }
/* StructAfter<T>(X) returns the struct T& that is placed after X.
* Works with X of variable size also. X must implement get_size() */
template<typename Type, typename TObject>
inline const Type& StructAfter(const TObject &X)
-{ return StructAtOffset<Type>(X, X.get_size()); }
+{ return StructAtOffset<Type>(&X, X.get_size()); }
template<typename Type, typename TObject>
inline Type& StructAfter(TObject &X)
-{ return StructAtOffset<Type>(X, X.get_size()); }
+{ return StructAtOffset<Type>(&X, X.get_size()); }
+
+
+
+/*
+ * Size checking
+ */
+
+/* Check _assertion in a method environment */
+#define _DEFINE_SIZE_ASSERTION(_assertion) \
+ inline void _size_assertion (void) const \
+ { ASSERT_STATIC (_assertion); }
+/* Check that _code compiles in a method environment */
+#define _DEFINE_COMPILES_ASSERTION(_code) \
+ inline void _compiles_assertion (void) const \
+ { _code; }
+
+
+#define DEFINE_SIZE_STATIC(size) \
+ _DEFINE_SIZE_ASSERTION (sizeof (*this) == (size)); \
+ static const unsigned int static_size = (size); \
+ static const unsigned int min_size = (size)
+
+/* Size signifying variable-sized array */
+#define VAR 1
+
+#define DEFINE_SIZE_UNION(size, _member) \
+ _DEFINE_SIZE_ASSERTION (this->u._member.static_size == (size)); \
+ static const unsigned int min_size = (size)
+
+#define DEFINE_SIZE_MIN(size) \
+ _DEFINE_SIZE_ASSERTION (sizeof (*this) >= (size)); \
+ static const unsigned int min_size = (size)
+
+#define DEFINE_SIZE_ARRAY(size, array) \
+ _DEFINE_SIZE_ASSERTION (sizeof (*this) == (size) + sizeof (array[0])); \
+ _DEFINE_COMPILES_ASSERTION ((void) array[0].static_size) \
+ static const unsigned int min_size = (size)
+
+#define DEFINE_SIZE_ARRAY2(size, array1, array2) \
+ _DEFINE_SIZE_ASSERTION (sizeof (*this) == (size) + sizeof (this->array1[0]) + sizeof (this->array2[0])); \
+ _DEFINE_COMPILES_ASSERTION ((void) array1[0].static_size; (void) array2[0].static_size) \
+ static const unsigned int min_size = (size)
*/
/* Global nul-content Null pool. Enlarge as necessary. */
-static const void *_NullPool[32 / sizeof (void *)];
+static const void *_NullPool[64 / sizeof (void *)];
-/* Generic template for nul-content sizeof-sized Null objects. */
+/* Generic nul-content Null objects. */
template <typename Type>
-static inline const Type& Null () {
- ASSERT_STATIC (sizeof (Type) <= sizeof (_NullPool));
+static inline const Type& Null (void) {
+ ASSERT_STATIC (Type::min_size <= sizeof (_NullPool));
return *CastP<Type> (_NullPool);
}
/* Specializaiton for arbitrary-content arbitrary-sized Null objects. */
-#define DEFINE_NULL_DATA(Type, size, data) \
-static const char _Null##Type[size + 1] = data; /* +1 is for nul-termination in data */ \
+#define DEFINE_NULL_DATA(Type, data) \
+static const char _Null##Type[Type::min_size + 1] = data; /* +1 is for nul-termination in data */ \
template <> \
-inline const Type& Null<Type> () { \
+inline const Type& Null<Type> (void) { \
return *CastP<Type> (_Null##Type); \
} /* The following line really exists such that we end in a place needing semicolon */ \
-ASSERT_STATIC (sizeof (Type) + 1 <= sizeof (_Null##Type))
+ASSERT_STATIC (Type::min_size + 1 <= sizeof (_Null##Type))
/* Accessor macro. */
#define Null(Type) Null<Type>()
-
/*
- * Sanitize
+ * Trace
*/
-#ifndef HB_DEBUG_SANITIZE
-#define HB_DEBUG_SANITIZE HB_DEBUG+0
-#endif
-#define TRACE_SANITIZE() \
- HB_STMT_START { \
- if (HB_DEBUG_SANITIZE) \
- _hb_trace ("SANITIZE", HB_FUNC, this, sanitize_depth, HB_DEBUG_SANITIZE); \
- } HB_STMT_END
+template <int max_depth>
+struct hb_trace_t {
+ explicit hb_trace_t (unsigned int *pdepth, const char *what, const char *function, const void *obj) : pdepth(pdepth) {
+ if (*pdepth < max_depth)
+ fprintf (stderr, "%s(%p) %-*d-> %s\n", what, obj, *pdepth, *pdepth, function);
+ if (max_depth) ++*pdepth;
+ }
+ ~hb_trace_t (void) { if (max_depth) --*pdepth; }
+ private:
+ unsigned int *pdepth;
+};
+template <> /* Optimize when tracing is disabled */
+struct hb_trace_t<0> {
+ explicit hb_trace_t (unsigned int *pdepth HB_UNUSED, const char *what HB_UNUSED, const char *function HB_UNUSED, const void *obj HB_UNUSED) {}
+};
-#define SANITIZE_ARG_DEF \
- hb_sanitize_context_t *context, \
- unsigned int sanitize_depth HB_UNUSED
-#define SANITIZE_ARG \
- context, \
- (HB_DEBUG_SANITIZE ? sanitize_depth + 1 : 0)
-struct hb_sanitize_context_t
-{
- const char *start, *end;
- hb_bool_t writable;
- unsigned int edit_count;
-};
+/*
+ * Sanitize
+ */
-static inline void
-_hb_sanitize_init (hb_sanitize_context_t *context,
- hb_blob_t *blob)
-{
- context->start = hb_blob_lock (blob);
- context->end = context->start + hb_blob_get_length (blob);
- context->writable = hb_blob_is_writable (blob);
- context->edit_count = 0;
-
- if (HB_DEBUG_SANITIZE)
- fprintf (stderr, "sanitize %p init [%p..%p] (%u bytes)\n",
- blob, context->start, context->end, context->end - context->start);
-}
+#ifndef HB_DEBUG_SANITIZE
+#define HB_DEBUG_SANITIZE HB_DEBUG+0
+#endif
-static inline void
-_hb_sanitize_fini (hb_sanitize_context_t *context HB_UNUSED,
- hb_blob_t *blob)
-{
- if (HB_DEBUG_SANITIZE)
- fprintf (stderr, "sanitize %p fini [%p..%p] %u edit requests\n",
- blob, context->start, context->end, context->edit_count);
- hb_blob_unlock (blob);
-}
+#define TRACE_SANITIZE() \
+ hb_trace_t<HB_DEBUG_SANITIZE> trace (&c->debug_depth, "SANITIZE", HB_FUNC, this); \
-static inline bool
-_hb_sanitize_check (SANITIZE_ARG_DEF,
- const char *base,
- unsigned int len)
-{
- bool ret = context->start <= base &&
- base <= context->end &&
- (unsigned int) (context->end - base) >= len;
-
- if (HB_DEBUG_SANITIZE && (int) sanitize_depth < (int) HB_DEBUG_SANITIZE) \
- fprintf (stderr, "SANITIZE(%p) %-*d-> check [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \
- base,
- sanitize_depth, sanitize_depth,
- base, base+len, len,
- context->start, context->end,
- ret ? "pass" : "FAIL");
-
- return ret;
-}
-static inline bool
-_hb_sanitize_array (SANITIZE_ARG_DEF,
- const char *base,
- unsigned int record_size,
- unsigned int len)
+struct hb_sanitize_context_t
{
- bool overflows = len >= ((unsigned int) -1) / record_size;
-
+ inline void init (hb_blob_t *blob)
+ {
+ this->blob = hb_blob_reference (blob);
+ this->start = hb_blob_lock (blob);
+ this->end = this->start + hb_blob_get_length (blob);
+ this->writable = hb_blob_is_writable (blob);
+ this->edit_count = 0;
+ this->debug_depth = 0;
- if (HB_DEBUG_SANITIZE && (int) sanitize_depth < (int) HB_DEBUG_SANITIZE)
- fprintf (stderr, "SANITIZE(%p) %-*d-> array [%p..%p] (%d*%d=%ld bytes) in [%p..%p] -> %s\n", \
- base,
- sanitize_depth, sanitize_depth,
- base, base + (record_size * len), record_size, len, (unsigned long) record_size * len,
- context->start, context->end,
- !overflows ? "does not overflow" : "OVERFLOWS FAIL");
+ if (HB_DEBUG_SANITIZE)
+ fprintf (stderr, "sanitize %p init [%p..%p] (%lu bytes)\n",
+ this->blob, this->start, this->end,
+ (unsigned long) (this->end - this->start));
+ }
- return likely (!overflows) && _hb_sanitize_check (SANITIZE_ARG, base, record_size * len);
-}
+ inline void finish (void)
+ {
+ if (HB_DEBUG_SANITIZE)
+ fprintf (stderr, "sanitize %p fini [%p..%p] %u edit requests\n",
+ this->blob, this->start, this->end, this->edit_count);
-static inline bool
-_hb_sanitize_edit (SANITIZE_ARG_DEF,
- const char *base HB_UNUSED,
- unsigned int len HB_UNUSED)
-{
- context->edit_count++;
-
- if (HB_DEBUG_SANITIZE && (int) sanitize_depth < (int) HB_DEBUG_SANITIZE)
- fprintf (stderr, "SANITIZE(%p) %-*d-> edit(%u) [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \
- base,
- sanitize_depth, sanitize_depth,
- context->edit_count,
- base, base+len, len,
- context->start, context->end,
- context->writable ? "granted" : "REJECTED");
-
- return context->writable;
-}
+ hb_blob_unlock (this->blob);
+ hb_blob_destroy (this->blob);
+ this->blob = NULL;
+ this->start = this->end = NULL;
+ }
-#define SANITIZE(X) likely ((X).sanitize (SANITIZE_ARG))
+ inline bool check_range (const void *base, unsigned int len) const
+ {
+ const char *p = (const char *) base;
+ bool ret = this->start <= p &&
+ p <= this->end &&
+ (unsigned int) (this->end - p) >= len;
+
+ if (HB_DEBUG_SANITIZE && (int) this->debug_depth < (int) HB_DEBUG_SANITIZE) \
+ fprintf (stderr, "SANITIZE(%p) %-*d-> range [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \
+ p,
+ this->debug_depth, this->debug_depth,
+ p, p + len, len,
+ this->start, this->end,
+ ret ? "pass" : "FAIL");
+
+ return likely (ret);
+ }
-#define SANITIZE_THIS(X) likely ((X).sanitize (SANITIZE_ARG, CharP(this)))
-#define SANITIZE_THIS2(X,Y) (SANITIZE_THIS (X) && SANITIZE_THIS (Y))
-#define SANITIZE_THIS3(X,Y,Z) (SANITIZE_THIS (X) && SANITIZE_THIS (Y) && SANITIZE_THIS(Z))
+ inline bool check_array (const void *base, unsigned int record_size, unsigned int len) const
+ {
+ const char *p = (const char *) base;
+ bool overflows = record_size > 0 && len >= ((unsigned int) -1) / record_size;
+
+ if (HB_DEBUG_SANITIZE && (int) this->debug_depth < (int) HB_DEBUG_SANITIZE)
+ fprintf (stderr, "SANITIZE(%p) %-*d-> array [%p..%p] (%d*%d=%ld bytes) in [%p..%p] -> %s\n", \
+ p,
+ this->debug_depth, this->debug_depth,
+ p, p + (record_size * len), record_size, len, (unsigned long) record_size * len,
+ this->start, this->end,
+ !overflows ? "does not overflow" : "OVERFLOWS FAIL");
+
+ return likely (!overflows && this->check_range (base, record_size * len));
+ }
-#define SANITIZE_BASE(X,B) likely ((X).sanitize (SANITIZE_ARG, B))
+ template <typename Type>
+ inline bool check_struct (const Type *obj) const
+ {
+ return likely (this->check_range (obj, obj->min_size));
+ }
-#define SANITIZE_SELF() SANITIZE_OBJ (*this)
-#define SANITIZE_OBJ(X) SANITIZE_MEM(&(X), sizeof (X))
+ inline bool can_edit (const void *base HB_UNUSED, unsigned int len HB_UNUSED)
+ {
+ const char *p = (const char *) base;
+ this->edit_count++;
+
+ if (HB_DEBUG_SANITIZE && (int) this->debug_depth < (int) HB_DEBUG_SANITIZE)
+ fprintf (stderr, "SANITIZE(%p) %-*d-> edit(%u) [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \
+ p,
+ this->debug_depth, this->debug_depth,
+ this->edit_count,
+ p, p + len, len,
+ this->start, this->end,
+ this->writable ? "granted" : "REJECTED");
+
+ return this->writable;
+ }
-#define SANITIZE_MEM(B,L) likely (_hb_sanitize_check (SANITIZE_ARG, CharP(B), (L)))
+ unsigned int debug_depth;
+ const char *start, *end;
+ bool writable;
+ unsigned int edit_count;
+ hb_blob_t *blob;
+};
-#define SANITIZE_ARRAY(A,S,L) likely (_hb_sanitize_array (SANITIZE_ARG, CharP(A), S, L))
/* Template to sanitize an object. */
struct Sanitizer
{
static hb_blob_t *sanitize (hb_blob_t *blob) {
- hb_sanitize_context_t context[1];
- unsigned int sanitize_depth = 0;
+ hb_sanitize_context_t c[1] = {{0}};
bool sane;
/* TODO is_sane() stuff */
+ if (!blob)
+ return hb_blob_create_empty ();
+
retry:
if (HB_DEBUG_SANITIZE)
fprintf (stderr, "Sanitizer %p start %s\n", blob, HB_FUNC);
- _hb_sanitize_init (context, blob);
+ c->init (blob);
- Type *t = CastP<Type> (const_cast<char *> (context->start));
+ if (unlikely (!c->start)) {
+ c->finish ();
+ return blob;
+ }
+
+ Type *t = CastP<Type> (const_cast<char *> (c->start));
- sane = t->sanitize (SANITIZE_ARG);
+ sane = t->sanitize (c);
if (sane) {
- if (context->edit_count) {
+ if (c->edit_count) {
if (HB_DEBUG_SANITIZE)
fprintf (stderr, "Sanitizer %p passed first round with %d edits; doing a second round %s\n",
- blob, context->edit_count, HB_FUNC);
+ blob, c->edit_count, HB_FUNC);
/* sanitize again to ensure no toe-stepping */
- context->edit_count = 0;
- sane = t->sanitize (SANITIZE_ARG);
- if (context->edit_count) {
+ c->edit_count = 0;
+ sane = t->sanitize (c);
+ if (c->edit_count) {
if (HB_DEBUG_SANITIZE)
fprintf (stderr, "Sanitizer %p requested %d edits in second round; FAILLING %s\n",
- blob, context->edit_count, HB_FUNC);
+ blob, c->edit_count, HB_FUNC);
sane = false;
}
}
- _hb_sanitize_fini (context, blob);
+ c->finish ();
} else {
- unsigned int edit_count = context->edit_count;
- _hb_sanitize_fini (context, blob);
+ unsigned int edit_count = c->edit_count;
+ c->finish ();
if (edit_count && !hb_blob_is_writable (blob) && hb_blob_try_writable (blob)) {
/* ok, we made it writable by relocating. try again */
if (HB_DEBUG_SANITIZE)
return hb_blob_create_empty ();
}
}
+
+ static const Type* lock_instance (hb_blob_t *blob) {
+ const char *base = hb_blob_lock (blob);
+ return unlikely (!base) ? &Null(Type) : CastP<Type> (base);
+ }
};
class BEInt<Type, 2>
{
public:
- inline class BEInt<Type,2>& operator = (Type i) { hb_be_uint16_put (v,i); return *this; }
- inline operator Type () const { return hb_be_uint16_get (v); }
+ inline void set (Type i) { hb_be_uint16_put (v,i); }
+ inline operator Type (void) const { return hb_be_uint16_get (v); }
inline bool operator == (const BEInt<Type, 2>& o) const { return hb_be_uint16_cmp (v, o.v); }
inline bool operator != (const BEInt<Type, 2>& o) const { return !(*this == o); }
private: uint8_t v[2];
class BEInt<Type, 4>
{
public:
- inline class BEInt<Type,4>& operator = (Type i) { hb_be_uint32_put (v,i); return *this; }
- inline operator Type () const { return hb_be_uint32_get (v); }
+ inline void set (Type i) { hb_be_uint32_put (v,i); }
+ inline operator Type (void) const { return hb_be_uint32_get (v); }
inline bool operator == (const BEInt<Type, 4>& o) const { return hb_be_uint32_cmp (v, o.v); }
inline bool operator != (const BEInt<Type, 4>& o) const { return !(*this == o); }
private: uint8_t v[4];
template <typename Type>
struct IntType
{
- static inline unsigned int get_size () { return sizeof (Type); }
- inline void set (Type i) { v = i; }
+ inline void set (Type i) { v.set (i); }
inline operator Type(void) const { return v; }
inline bool operator == (const IntType<Type> &o) const { return v == o.v; }
inline bool operator != (const IntType<Type> &o) const { return v != o.v; }
- inline bool sanitize (SANITIZE_ARG_DEF) {
+ inline int cmp (Type a) const { Type b = v; return a < b ? -1 : a == b ? 0 : +1; }
+ inline bool sanitize (hb_sanitize_context_t *c) {
TRACE_SANITIZE ();
- return SANITIZE_SELF ();
+ return likely (c->check_struct (this));
}
- private: BEInt<Type, sizeof (Type)> v;
+ protected:
+ BEInt<Type, sizeof (Type)> v;
+ public:
+ DEFINE_SIZE_STATIC (sizeof (Type));
};
typedef IntType<uint16_t> USHORT; /* 16-bit unsigned integer. */
typedef IntType<uint32_t> ULONG; /* 32-bit unsigned integer. */
typedef IntType<int32_t> LONG; /* 32-bit signed integer. */
-ASSERT_SIZE (USHORT, 2);
-ASSERT_SIZE (SHORT, 2);
-ASSERT_SIZE (ULONG, 4);
-ASSERT_SIZE (LONG, 4);
+/* Date represented in number of seconds since 12:00 midnight, January 1,
+ * 1904. The value is represented as a signed 64-bit integer. */
+struct LONGDATETIME
+{
+ inline bool sanitize (hb_sanitize_context_t *c) {
+ TRACE_SANITIZE ();
+ return likely (c->check_struct (this));
+ }
+ private:
+ LONG major;
+ ULONG minor;
+ public:
+ DEFINE_SIZE_STATIC (8);
+};
/* Array of four uint8s (length = 32 bits) used to identify a script, language
* system, feature, or baseline */
struct Tag : ULONG
{
/* What the char* converters return is NOT nul-terminated. Print using "%.4s" */
- inline operator const char* (void) const { return CharP(this); }
- inline operator char* (void) { return CharP(this); }
+ inline operator const char* (void) const { return reinterpret_cast<const char *> (&this->v); }
+ inline operator char* (void) { return reinterpret_cast<char *> (&this->v); }
+ public:
+ DEFINE_SIZE_STATIC (4);
};
-ASSERT_SIZE (Tag, 4);
-DEFINE_NULL_DATA (Tag, 4, " ");
+DEFINE_NULL_DATA (Tag, " ");
/* Glyph index number, same as uint16 (length = 16 bits) */
typedef USHORT GlyphID;
+/* Script/language-system/feature index */
+struct Index : USHORT {
+ static const unsigned int NOT_FOUND_INDEX = 0xFFFF;
+};
+DEFINE_NULL_DATA (Index, "\xff\xff");
+
/* Offset to a table, same as uint16 (length = 16 bits), Null offset = 0x0000 */
typedef USHORT Offset;
static uint32_t CalcTableChecksum (ULONG *Table, uint32_t Length)
{
uint32_t Sum = 0L;
- ULONG *EndPtr = Table+((Length+3) & ~3) / ULONG::get_size ();
+ ULONG *EndPtr = Table+((Length+3) & ~3) / ULONG::static_size;
while (Table < EndPtr)
Sum += *Table++;
return Sum;
}
+ public:
+ DEFINE_SIZE_STATIC (4);
};
-ASSERT_SIZE (CheckSum, 4);
/*
{
inline operator uint32_t (void) const { return (major << 16) + minor; }
- inline bool sanitize (SANITIZE_ARG_DEF) {
+ inline bool sanitize (hb_sanitize_context_t *c) {
TRACE_SANITIZE ();
- return SANITIZE_SELF ();
+ return c->check_struct (this);
}
USHORT major;
USHORT minor;
+ public:
+ DEFINE_SIZE_STATIC (4);
};
-ASSERT_SIZE (FixedVersion, 4);
{
unsigned int offset = *this;
if (unlikely (!offset)) return Null(Type);
- return StructAtOffset<Type> (*CharP(base), offset);
+ return StructAtOffset<Type> (base, offset);
}
- inline bool sanitize (SANITIZE_ARG_DEF, void *base) {
- TRACE_SANITIZE ();
- if (!SANITIZE_SELF ()) return false;
- unsigned int offset = *this;
- if (unlikely (!offset)) return true;
- return SANITIZE (StructAtOffset<Type> (*CharP(base), offset)) || neuter (SANITIZE_ARG);
- }
- inline bool sanitize (SANITIZE_ARG_DEF, void *base, void *base2) {
+ inline bool sanitize (hb_sanitize_context_t *c, void *base) {
TRACE_SANITIZE ();
- if (!SANITIZE_SELF ()) return false;
+ if (unlikely (!c->check_struct (this))) return false;
unsigned int offset = *this;
if (unlikely (!offset)) return true;
- return SANITIZE_BASE (StructAtOffset<Type> (*CharP(base), offset), base2) || neuter (SANITIZE_ARG);
+ Type &obj = StructAtOffset<Type> (base, offset);
+ return likely (obj.sanitize (c)) || neuter (c);
}
- inline bool sanitize (SANITIZE_ARG_DEF, void *base, unsigned int user_data) {
+ template <typename T>
+ inline bool sanitize (hb_sanitize_context_t *c, void *base, T user_data) {
TRACE_SANITIZE ();
- if (!SANITIZE_SELF ()) return false;
+ if (unlikely (!c->check_struct (this))) return false;
unsigned int offset = *this;
if (unlikely (!offset)) return true;
- return SANITIZE_BASE (StructAtOffset<Type> (*CharP(base), offset), user_data) || neuter (SANITIZE_ARG);
+ Type &obj = StructAtOffset<Type> (base, offset);
+ return likely (obj.sanitize (c, user_data)) || neuter (c);
}
private:
/* Set the offset to Null */
- inline bool neuter (SANITIZE_ARG_DEF) {
- if (_hb_sanitize_edit (SANITIZE_ARG, CharP(this), this->get_size ())) {
+ inline bool neuter (hb_sanitize_context_t *c) {
+ if (c->can_edit (this, this->static_size)) {
this->set (0); /* 0 is Null offset */
return true;
}
template <typename LenType, typename Type>
struct GenericArrayOf
{
- const Type *array(void) const { return &StructAfter<Type> (len); }
- Type *array(void) { return &StructAfter<Type> (len); }
-
const Type *sub_array (unsigned int start_offset, unsigned int *pcount /* IN/OUT */) const
{
unsigned int count = len;
count -= start_offset;
count = MIN (count, *pcount);
*pcount = count;
- return array() + start_offset;
+ return array + start_offset;
}
inline const Type& operator [] (unsigned int i) const
{
if (unlikely (i >= len)) return Null(Type);
- return array()[i];
+ return array[i];
}
- inline unsigned int get_size () const
- { return len.get_size () + len * Type::get_size (); }
+ inline unsigned int get_size (void) const
+ { return len.static_size + len * Type::static_size; }
- inline bool sanitize (SANITIZE_ARG_DEF) {
+ inline bool sanitize (hb_sanitize_context_t *c) {
TRACE_SANITIZE ();
- if (!likely (sanitize_shallow (SANITIZE_ARG))) return false;
+ if (unlikely (!sanitize_shallow (c))) return false;
/* Note: for structs that do not reference other structs,
* we do not need to call their sanitize() as we already did
* a bound check on the aggregate array size, hence the return.
* other structs. */
unsigned int count = len;
for (unsigned int i = 0; i < count; i++)
- if (!SANITIZE (array()[i]))
+ if (array[i].sanitize (c))
return false;
return true;
}
- inline bool sanitize (SANITIZE_ARG_DEF, void *base) {
+ inline bool sanitize (hb_sanitize_context_t *c, void *base) {
TRACE_SANITIZE ();
- if (!likely (sanitize_shallow (SANITIZE_ARG))) return false;
+ if (unlikely (!sanitize_shallow (c))) return false;
unsigned int count = len;
for (unsigned int i = 0; i < count; i++)
- if (!array()[i].sanitize (SANITIZE_ARG, base))
+ if (unlikely (!array[i].sanitize (c, base)))
return false;
return true;
}
- inline bool sanitize (SANITIZE_ARG_DEF, void *base, void *base2) {
+ template <typename T>
+ inline bool sanitize (hb_sanitize_context_t *c, void *base, T user_data) {
TRACE_SANITIZE ();
- if (!likely (sanitize_shallow (SANITIZE_ARG))) return false;
+ if (unlikely (!sanitize_shallow (c))) return false;
unsigned int count = len;
for (unsigned int i = 0; i < count; i++)
- if (!array()[i].sanitize (SANITIZE_ARG, base, base2))
- return false;
- return true;
- }
- inline bool sanitize (SANITIZE_ARG_DEF, void *base, unsigned int user_data) {
- TRACE_SANITIZE ();
- if (!likely (sanitize_shallow (SANITIZE_ARG))) return false;
- unsigned int count = len;
- for (unsigned int i = 0; i < count; i++)
- if (!array()[i].sanitize (SANITIZE_ARG, base, user_data))
+ if (unlikely (!array[i].sanitize (c, base, user_data)))
return false;
return true;
}
private:
- inline bool sanitize_shallow (SANITIZE_ARG_DEF) {
+ inline bool sanitize_shallow (hb_sanitize_context_t *c) {
TRACE_SANITIZE ();
- return SANITIZE_SELF() && SANITIZE_ARRAY (this, Type::get_size (), len);
+ return c->check_struct (this)
+ && c->check_array (this, Type::static_size, len);
}
public:
LenType len;
-/*Type array[VAR];*/
+ Type array[VAR];
+ public:
+ DEFINE_SIZE_ARRAY (sizeof (LenType), array);
};
/* An array with a USHORT number of elements. */
inline const Type& operator [] (unsigned int i) const
{
if (unlikely (i >= this->len)) return Null(Type);
- return this+this->array()[i];
+ return this+this->array[i];
}
- inline bool sanitize (SANITIZE_ARG_DEF) {
+ inline bool sanitize (hb_sanitize_context_t *c) {
TRACE_SANITIZE ();
- return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CharP(this));
+ return OffsetArrayOf<Type>::sanitize (c, this);
}
- inline bool sanitize (SANITIZE_ARG_DEF, unsigned int user_data) {
+ template <typename T>
+ inline bool sanitize (hb_sanitize_context_t *c, T user_data) {
TRACE_SANITIZE ();
- return OffsetArrayOf<Type>::sanitize (SANITIZE_ARG, CharP(this), user_data);
+ return OffsetArrayOf<Type>::sanitize (c, this, user_data);
}
};
template <typename Type>
struct HeadlessArrayOf
{
- const Type *array(void) const { return &StructAfter<Type> (len); }
- Type *array(void) { return &StructAfter<Type> (len); }
-
inline const Type& operator [] (unsigned int i) const
{
if (unlikely (i >= len || !i)) return Null(Type);
- return array()[i-1];
+ return array[i-1];
}
- inline unsigned int get_size () const
- { return len.get_size () + (len ? len - 1 : 0) * Type::get_size (); }
+ inline unsigned int get_size (void) const
+ { return len.static_size + (len ? len - 1 : 0) * Type::static_size; }
- inline bool sanitize_shallow (SANITIZE_ARG_DEF) {
- TRACE_SANITIZE ();
- return SANITIZE_SELF() && SANITIZE_ARRAY (this, Type::get_size (), len);
+ inline bool sanitize_shallow (hb_sanitize_context_t *c) {
+ return c->check_struct (this)
+ && c->check_array (this, Type::static_size, len);
}
- inline bool sanitize (SANITIZE_ARG_DEF) {
+ inline bool sanitize (hb_sanitize_context_t *c) {
TRACE_SANITIZE ();
- if (!likely (sanitize_shallow (SANITIZE_ARG))) return false;
+ if (unlikely (!sanitize_shallow (c))) return false;
/* Note: for structs that do not reference other structs,
* we do not need to call their sanitize() as we already did
* a bound check on the aggregate array size, hence the return.
* to do have a simple sanitize(), ie. they do not reference
* other structs. */
unsigned int count = len ? len - 1 : 0;
- Type *a = array();
+ Type *a = array;
for (unsigned int i = 0; i < count; i++)
- if (!SANITIZE (a[i]))
+ if (unlikely (!a[i].sanitize (c)))
return false;
return true;
}
USHORT len;
-/*Type array[VAR];*/
+ Type array[VAR];
+ public:
+ DEFINE_SIZE_ARRAY (sizeof (USHORT), array);
};
+/* An array with sorted elements. Supports binary searching. */
+template <typename Type>
+struct SortedArrayOf : ArrayOf<Type> {
+
+ template <typename SearchType>
+ inline int search (const SearchType &x) const {
+ class Cmp {
+ public: static int cmp (const SearchType *a, const Type *b) { return b->cmp (*a); }
+ };
+ const Type *p = (const Type *) bsearch (&x, this->array, this->len, sizeof (this->array[0]), (hb_compare_func_t) Cmp::cmp);
+ return p ? p - this->array : -1;
+ }
+};
+
+
+HB_BEGIN_DECLS
+HB_END_DECLS
+
#endif /* HB_OPEN_TYPE_PRIVATE_HH */
projects / framework / uifw / harfbuzz.git / blobdiff