/*
- * Copyright (C) 2007,2008,2009,2010 Red Hat, Inc.
+ * Copyright © 2007,2008,2009,2010 Red Hat, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* 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-private.hh"
#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>()
-/*
- * Trace
- */
-
-
-template <int max_depth>
-struct hb_trace_t {
- explicit hb_trace_t (unsigned int *pdepth) : pdepth(pdepth) { if (max_depth) ++*pdepth; }
- ~hb_trace_t (void) { if (max_depth) --*pdepth; }
-
- inline void log (const char *what, const char *function, const void *obj)
- {
- if (*pdepth < max_depth)
- fprintf (stderr, "%s(%p) %-*d-> %s\n", what, obj, *pdepth, *pdepth, function);
- }
-
- private:
- unsigned int *pdepth;
-};
-template <> /* Optimize when tracing is disabled */
-struct hb_trace_t<0> {
- explicit hb_trace_t (unsigned int *p) {}
- inline void log (const char *what, const char *function, const void *obj) {};
-};
-
-
/*
* Sanitize
*/
#ifndef HB_DEBUG_SANITIZE
-#define HB_DEBUG_SANITIZE HB_DEBUG+0
+#define HB_DEBUG_SANITIZE (HB_DEBUG+0)
#endif
#define TRACE_SANITIZE() \
- hb_trace_t<HB_DEBUG_SANITIZE> trace (&context->debug_depth); \
- trace.log ("SANITIZE", HB_FUNC, this);
+ hb_auto_trace_t<HB_DEBUG_SANITIZE> trace (&c->debug_depth, "SANITIZE", this, NULL, HB_FUNC);
struct hb_sanitize_context_t
{
- inline void init (hb_blob_t *blob)
+ inline void init (hb_blob_t *b)
+ {
+ this->blob = hb_blob_reference (b);
+ this->writable = false;
+ }
+
+ inline void setup (void)
{
- 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->start = hb_blob_get_data (this->blob, NULL);
+ this->end = this->start + hb_blob_get_length (this->blob);
this->edit_count = 0;
this->debug_depth = 0;
- if (HB_DEBUG_SANITIZE)
- fprintf (stderr, "sanitize %p init [%p..%p] (%u bytes)\n",
- this->blob, this->start, this->end, this->end - this->start);
+ DEBUG_MSG (SANITIZE, this->blob,
+ "init [%p..%p] (%lu bytes)",
+ this->start, this->end,
+ (unsigned long) (this->end - this->start));
}
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);
+ DEBUG_MSG (SANITIZE, this->blob,
+ "fini [%p..%p] %u edit requests",
+ this->start, this->end, this->edit_count);
- hb_blob_unlock (this->blob);
hb_blob_destroy (this->blob);
this->blob = NULL;
this->start = this->end = NULL;
}
- inline bool check (const char *base, unsigned int len) const
+ inline bool check_range (const void *base, unsigned int len) const
{
- bool ret = this->start <= base &&
- base <= this->end &&
- (unsigned int) (this->end - base) >= len;
-
- if (HB_DEBUG_SANITIZE && (int) this->debug_depth < (int) HB_DEBUG_SANITIZE) \
- fprintf (stderr, "SANITIZE(%p) %-*d-> check [%p..%p] (%d bytes) in [%p..%p] -> %s\n", \
- base,
- this->debug_depth, this->debug_depth,
- base, base+len, len,
- this->start, this->end,
- ret ? "pass" : "FAIL");
+ const char *p = (const char *) base;
+ bool ret = this->start <= p &&
+ p <= this->end &&
+ (unsigned int) (this->end - p) >= len;
+
+ DEBUG_MSG_LEVEL (SANITIZE, this->blob, this->debug_depth,
+ "%-*d-> range [%p..%p] (%d bytes) in [%p..%p] -> %s",
+ this->debug_depth, this->debug_depth,
+ p, p + len, len,
+ this->start, this->end,
+ ret ? "pass" : "FAIL");
return likely (ret);
}
- inline bool check_array (const char *base, unsigned int record_size, unsigned int len) const
+ inline bool check_array (const void *base, unsigned int record_size, unsigned int len) const
{
- bool overflows = len >= ((unsigned int) -1) / record_size;
+ const char *p = (const char *) base;
+ bool overflows = _hb_unsigned_int_mul_overflows (len, record_size);
+ DEBUG_MSG_LEVEL (SANITIZE, this->blob, this->debug_depth,
+ "%-*d-> array [%p..%p] (%d*%d=%ld bytes) in [%p..%p] -> %s",
+ 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");
- 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", \
- base,
- this->debug_depth, this->debug_depth,
- base, base + (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));
+ }
- return likely (!overflows && this->check (base, record_size * len));
+ template <typename Type>
+ inline bool check_struct (const Type *obj) const
+ {
+ return likely (this->check_range (obj, obj->min_size));
}
- inline bool can_edit (const char *base HB_UNUSED, unsigned int len HB_UNUSED)
+ 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", \
- base,
- this->debug_depth, this->debug_depth,
- this->edit_count,
- base, base+len, len,
- this->start, this->end,
- this->writable ? "granted" : "REJECTED");
+ DEBUG_MSG_LEVEL (SANITIZE, this->blob, this->debug_depth,
+ "%-*d-> edit(%u) [%p..%p] (%d bytes) in [%p..%p] -> %s",
+ this->debug_depth, this->debug_depth,
+ this->edit_count,
+ p, p + len, len,
+ this->start, this->end,
+ this->writable ? "granted" : "REJECTED");
return this->writable;
}
+ unsigned int debug_depth;
const char *start, *end;
bool writable;
unsigned int edit_count;
hb_blob_t *blob;
- unsigned int debug_depth;
};
-#define SANITIZE(X) likely ((X).sanitize (context))
-
-#define SANITIZE_WITH_BASE(B,X) likely ((X).sanitize (context, CharP(B)))
-
-#define SANITIZE_SELF() SANITIZE_MEM(this, sizeof (*this))
-
-#define SANITIZE_MEM(B,L) likely (context->check (CharP(B), (L)))
-
-#define SANITIZE_ARRAY(A,S,L) likely (context->check_array (CharP(A), S, L))
-
/* Template to sanitize an object. */
template <typename Type>
struct Sanitizer
{
static hb_blob_t *sanitize (hb_blob_t *blob) {
- hb_sanitize_context_t context[1];
+ hb_sanitize_context_t c[1] = {{0}};
bool sane;
/* TODO is_sane() stuff */
+ c->init (blob);
+
retry:
- if (HB_DEBUG_SANITIZE)
- fprintf (stderr, "Sanitizer %p start %s\n", blob, HB_FUNC);
+ DEBUG_MSG_FUNC (SANITIZE, blob, "start");
+
+ c->setup ();
- context->init (blob);
+ if (unlikely (!c->start)) {
+ c->finish ();
+ return blob;
+ }
- Type *t = CastP<Type> (const_cast<char *> (context->start));
+ Type *t = CastP<Type> (const_cast<char *> (c->start));
- sane = t->sanitize (context);
+ sane = t->sanitize (c);
if (sane) {
- if (context->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);
+ if (c->edit_count) {
+ DEBUG_MSG_FUNC (SANITIZE, blob, "passed first round with %d edits; going for second round", c->edit_count);
/* sanitize again to ensure no toe-stepping */
- context->edit_count = 0;
- sane = t->sanitize (context);
- if (context->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);
+ c->edit_count = 0;
+ sane = t->sanitize (c);
+ if (c->edit_count) {
+ DEBUG_MSG_FUNC (SANITIZE, blob, "requested %d edits in second round; FAILLING", c->edit_count);
sane = false;
}
}
- context->finish ();
} else {
- unsigned int edit_count = context->edit_count;
- context->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)
- fprintf (stderr, "Sanitizer %p retry %s\n", blob, HB_FUNC);
- goto retry;
+ unsigned int edit_count = c->edit_count;
+ if (edit_count && !c->writable) {
+ c->start = hb_blob_get_data_writable (blob, NULL);
+ c->end = c->start + hb_blob_get_length (blob);
+
+ if (c->start) {
+ c->writable = true;
+ /* ok, we made it writable by relocating. try again */
+ DEBUG_MSG_FUNC (SANITIZE, blob, "retry");
+ goto retry;
+ }
}
}
- if (HB_DEBUG_SANITIZE)
- fprintf (stderr, "Sanitizer %p %s %s\n", blob, sane ? "passed" : "FAILED", HB_FUNC);
+ c->finish ();
+
+ DEBUG_MSG_FUNC (SANITIZE, blob, sane ? "PASSED" : "FAILED");
if (sane)
return blob;
else {
hb_blob_destroy (blob);
- return hb_blob_create_empty ();
+ return hb_blob_get_empty ();
}
}
+
+ static const Type* lock_instance (hb_blob_t *blob) {
+ hb_blob_make_immutable (blob);
+ const char *base = hb_blob_get_data (blob, NULL);
+ 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 bool operator == (const BEInt<Type, 2>& o) const { return hb_be_uint16_cmp (v, o.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_eq (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 bool operator == (const BEInt<Type, 4>& o) const { return hb_be_uint32_cmp (v, o.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_eq (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 (hb_sanitize_context_t *context) {
+ 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);
/*
struct FixedVersion
{
- inline operator uint32_t (void) const { return (major << 16) + minor; }
+ inline uint32_t to_int (void) const { return (major << 16) + minor; }
- inline bool sanitize (hb_sanitize_context_t *context) {
+ 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 (hb_sanitize_context_t *context, void *base) {
+ 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;
- Type &obj = StructAtOffset<Type> (*CharP(base), offset);
- return likely (obj.sanitize (context)) || neuter (context);
+ Type &obj = StructAtOffset<Type> (base, offset);
+ return likely (obj.sanitize (c)) || neuter (c);
}
template <typename T>
- inline bool sanitize (hb_sanitize_context_t *context, void *base, T user_data) {
+ 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;
- Type &obj = StructAtOffset<Type> (*CharP(base), offset);
- return likely (obj.sanitize (context, user_data)) || neuter (context);
+ Type &obj = StructAtOffset<Type> (base, offset);
+ return likely (obj.sanitize (c, user_data)) || neuter (c);
}
private:
/* Set the offset to Null */
- inline bool neuter (hb_sanitize_context_t *context) {
- if (context->can_edit (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 (hb_sanitize_context_t *context) {
+ inline bool sanitize (hb_sanitize_context_t *c) {
TRACE_SANITIZE ();
- if (!likely (sanitize_shallow (context))) 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.
+ * a bound check on the aggregate array size. We just include
+ * a small unreachable expression to make sure the structs
+ * pointed to do have a simple sanitize(), ie. they do not
+ * reference other structs via offsets.
*/
- return true;
- /* We do keep this code though to make sure the structs pointed
- * to do have a simple sanitize(), ie. they do not reference
- * other structs. */
- unsigned int count = len;
- for (unsigned int i = 0; i < count; i++)
- if (!SANITIZE (array()[i]))
- return false;
+ (void) (false && array[0].sanitize (c));
+
return true;
}
- inline bool sanitize (hb_sanitize_context_t *context, void *base) {
+ inline bool sanitize (hb_sanitize_context_t *c, void *base) {
TRACE_SANITIZE ();
- if (!likely (sanitize_shallow (context))) 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 (context, base))
+ if (unlikely (!array[i].sanitize (c, base)))
return false;
return true;
}
template <typename T>
- inline bool sanitize (hb_sanitize_context_t *context, void *base, T user_data) {
+ inline bool sanitize (hb_sanitize_context_t *c, void *base, T user_data) {
TRACE_SANITIZE ();
- if (!likely (sanitize_shallow (context))) 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 (context, base, user_data))
+ if (unlikely (!array[i].sanitize (c, base, user_data)))
return false;
return true;
}
private:
- inline bool sanitize_shallow (hb_sanitize_context_t *context) {
+ 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 (hb_sanitize_context_t *context) {
+ inline bool sanitize (hb_sanitize_context_t *c) {
TRACE_SANITIZE ();
- return OffsetArrayOf<Type>::sanitize (context, CharP(this));
+ return OffsetArrayOf<Type>::sanitize (c, this);
}
template <typename T>
- inline bool sanitize (hb_sanitize_context_t *context, T user_data) {
+ inline bool sanitize (hb_sanitize_context_t *c, T user_data) {
TRACE_SANITIZE ();
- return OffsetArrayOf<Type>::sanitize (context, 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 (hb_sanitize_context_t *context) {
- 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 (hb_sanitize_context_t *context) {
+ inline bool sanitize (hb_sanitize_context_t *c) {
TRACE_SANITIZE ();
- if (!likely (sanitize_shallow (context))) 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.
+ * a bound check on the aggregate array size. We just include
+ * a small unreachable expression to make sure the structs
+ * pointed to do have a simple sanitize(), ie. they do not
+ * reference other structs via offsets.
*/
- return true;
- /* We do keep this code though to make sure the structs pointed
- * to do have a simple sanitize(), ie. they do not reference
- * other structs. */
- unsigned int count = len ? len - 1 : 0;
- Type *a = array();
- for (unsigned int i = 0; i < count; i++)
- if (!SANITIZE (a[i]))
- return false;
+ (void) (false && array[0].sanitize (c));
+
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