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[layout] Add may_dispatch()

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No functional change right now.
This commit is contained in:
Behdad Esfahbod 2015-02-17 18:14:17 +03:00
parent de2118ed7a
commit 50b8dc79da
3 changed files with 25 additions and 0 deletions
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7
src/hb-ot-layout-gpos-table.hh
View File

@ -548,6 +548,7 @@ struct SinglePos
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
case 2: return TRACE_RETURN (c->dispatch (u.format2));
@ -853,6 +854,7 @@ struct PairPos
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
case 2: return TRACE_RETURN (c->dispatch (u.format2));
@ -1022,6 +1024,7 @@ struct CursivePos
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
default:return TRACE_RETURN (c->default_return_value ());
@ -1124,6 +1127,7 @@ struct MarkBasePos
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
default:return TRACE_RETURN (c->default_return_value ());
@ -1248,6 +1252,7 @@ struct MarkLigPos
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
default:return TRACE_RETURN (c->default_return_value ());
@ -1370,6 +1375,7 @@ struct MarkMarkPos
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
default:return TRACE_RETURN (c->default_return_value ());
@ -1430,6 +1436,7 @@ struct PosLookupSubTable
inline typename context_t::return_t dispatch (context_t *c, unsigned int lookup_type) const
{
TRACE_DISPATCH (this, lookup_type);
if (unlikely (!c->may_dispatch (this, &u.sub_format))) TRACE_RETURN (c->default_return_value ());
switch (lookup_type) {
case Single: return TRACE_RETURN (u.single.dispatch (c));
case Pair: return TRACE_RETURN (u.pair.dispatch (c));

6
src/hb-ot-layout-gsub-table.hh
View File

@ -225,6 +225,7 @@ struct SingleSubst
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
case 2: return TRACE_RETURN (c->dispatch (u.format2));
@ -428,6 +429,7 @@ struct MultipleSubst
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
default:return TRACE_RETURN (c->default_return_value ());
@ -581,6 +583,7 @@ struct AlternateSubst
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
default:return TRACE_RETURN (c->default_return_value ());
@ -901,6 +904,7 @@ struct LigatureSubst
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
default:return TRACE_RETURN (c->default_return_value ());
@ -1067,6 +1071,7 @@ struct ReverseChainSingleSubst
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
default:return TRACE_RETURN (c->default_return_value ());
@ -1115,6 +1120,7 @@ struct SubstLookupSubTable
inline typename context_t::return_t dispatch (context_t *c, unsigned int lookup_type) const
{
TRACE_DISPATCH (this, lookup_type);
if (unlikely (!c->may_dispatch (this, &u.sub_format))) TRACE_RETURN (c->default_return_value ());
switch (lookup_type) {
case Single: return TRACE_RETURN (u.single.dispatch (c));
case Multiple: return TRACE_RETURN (u.multiple.dispatch (c));

12
src/hb-ot-layout-gsubgpos-private.hh
View File

@ -58,6 +58,8 @@ struct hb_closure_context_t
static const unsigned int max_debug_depth = HB_DEBUG_CLOSURE;
typedef hb_void_t return_t;
typedef return_t (*recurse_func_t) (hb_closure_context_t *c, unsigned int lookup_index);
template <typename T, typename F>
inline bool may_dispatch (const T *obj, const F *format) { return true; }
template <typename T>
inline return_t dispatch (const T &obj) { obj.closure (this); return HB_VOID; }
static return_t default_return_value (void) { return HB_VOID; }
@ -107,6 +109,8 @@ struct hb_would_apply_context_t
inline const char *get_name (void) { return "WOULD_APPLY"; }
static const unsigned int max_debug_depth = HB_DEBUG_WOULD_APPLY;
typedef bool return_t;
template <typename T, typename F>
inline bool may_dispatch (const T *obj, const F *format) { return true; }
template <typename T>
inline return_t dispatch (const T &obj) { return obj.would_apply (this); }
static return_t default_return_value (void) { return false; }
@ -146,6 +150,8 @@ struct hb_collect_glyphs_context_t
static const unsigned int max_debug_depth = HB_DEBUG_COLLECT_GLYPHS;
typedef hb_void_t return_t;
typedef return_t (*recurse_func_t) (hb_collect_glyphs_context_t *c, unsigned int lookup_index);
template <typename T, typename F>
inline bool may_dispatch (const T *obj, const F *format) { return true; }
template <typename T>
inline return_t dispatch (const T &obj) { obj.collect_glyphs (this); return HB_VOID; }
static return_t default_return_value (void) { return HB_VOID; }
@ -237,6 +243,8 @@ struct hb_get_coverage_context_t
inline const char *get_name (void) { return "GET_COVERAGE"; }
static const unsigned int max_debug_depth = HB_DEBUG_GET_COVERAGE;
typedef const Coverage &return_t;
template <typename T, typename F>
inline bool may_dispatch (const T *obj, const F *format) { return true; }
template <typename T>
inline return_t dispatch (const T &obj) { return obj.get_coverage (); }
static return_t default_return_value (void) { return Null(Coverage); }
@ -442,6 +450,8 @@ struct hb_apply_context_t
static const unsigned int max_debug_depth = HB_DEBUG_APPLY;
typedef bool return_t;
typedef return_t (*recurse_func_t) (hb_apply_context_t *c, unsigned int lookup_index);
template <typename T, typename F>
inline bool may_dispatch (const T *obj, const F *format) { return true; }
template <typename T>
inline return_t dispatch (const T &obj) { return obj.apply (this); }
static return_t default_return_value (void) { return false; }
@ -1503,6 +1513,7 @@ struct Context
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
case 2: return TRACE_RETURN (c->dispatch (u.format2));
@ -2127,6 +2138,7 @@ struct ChainContext
inline typename context_t::return_t dispatch (context_t *c) const
{
TRACE_DISPATCH (this, u.format);
if (unlikely (!c->may_dispatch (this, &u.format))) TRACE_RETURN (c->default_return_value ());
switch (u.format) {
case 1: return TRACE_RETURN (c->dispatch (u.format1));
case 2: return TRACE_RETURN (c->dispatch (u.format2));