gfx/graphite2/src/inc/Pass.h@b8a032363ba2 (annotated)
gfx/graphite2/src/inc/Pass.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* GRAPHITE2 LICENSING |
| michael@0 | 2 | |
| michael@0 | 3 | Copyright 2010, SIL International |
| michael@0 | 4 | All rights reserved. |
| michael@0 | 5 | |
| michael@0 | 6 | This library is free software; you can redistribute it and/or modify |
| michael@0 | 7 | it under the terms of the GNU Lesser General Public License as published |
| michael@0 | 8 | by the Free Software Foundation; either version 2.1 of License, or |
| michael@0 | 9 | (at your option) any later version. |
| michael@0 | 10 | |
| michael@0 | 11 | This program is distributed in the hope that it will be useful, |
| michael@0 | 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| michael@0 | 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| michael@0 | 14 | Lesser General Public License for more details. |
| michael@0 | 15 | |
| michael@0 | 16 | You should also have received a copy of the GNU Lesser General Public |
| michael@0 | 17 | License along with this library in the file named "LICENSE". |
| michael@0 | 18 | If not, write to the Free Software Foundation, 51 Franklin Street, |
| michael@0 | 19 | Suite 500, Boston, MA 02110-1335, USA or visit their web page on the |
| michael@0 | 20 | internet at http://www.fsf.org/licenses/lgpl.html. |
| michael@0 | 21 | |
| michael@0 | 22 | Alternatively, the contents of this file may be used under the terms of the |
| michael@0 | 23 | Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public |
| michael@0 | 24 | License, as published by the Free Software Foundation, either version 2 |
| michael@0 | 25 | of the License or (at your option) any later version. |
| michael@0 | 26 | */ |
| michael@0 | 27 | #pragma once |
| michael@0 | 28 | |
| michael@0 | 29 | #include <cstdlib> |
| michael@0 | 30 | #include "inc/Code.h" |
| michael@0 | 31 | |
| michael@0 | 32 | namespace graphite2 { |
| michael@0 | 33 | |
| michael@0 | 34 | class Segment; |
| michael@0 | 35 | class Face; |
| michael@0 | 36 | class Silf; |
| michael@0 | 37 | struct Rule; |
| michael@0 | 38 | struct RuleEntry; |
| michael@0 | 39 | struct State; |
| michael@0 | 40 | class FiniteStateMachine; |
| michael@0 | 41 | class Error; |
| michael@0 | 42 | |
| michael@0 | 43 | class Pass |
| michael@0 | 44 | { |
| michael@0 | 45 | public: |
| michael@0 | 46 | Pass(); |
| michael@0 | 47 | ~Pass(); |
| michael@0 | 48 | |
| michael@0 | 49 | bool readPass(const byte * pPass, size_t pass_length, size_t subtable_base, Face & face, Error &e); |
| michael@0 | 50 | void runGraphite(vm::Machine & m, FiniteStateMachine & fsm) const; |
| michael@0 | 51 | void init(Silf *silf) { m_silf = silf; } |
| michael@0 | 52 | byte spaceContextuals() const { return (m_flags & 0x0E) >> 1; } |
| michael@0 | 53 | |
| michael@0 | 54 | CLASS_NEW_DELETE |
| michael@0 | 55 | private: |
| michael@0 | 56 | void findNDoRule(Slot* & iSlot, vm::Machine &, FiniteStateMachine& fsm) const; |
| michael@0 | 57 | int doAction(const vm::Machine::Code* codeptr, Slot * & slot_out, vm::Machine &) const; |
| michael@0 | 58 | bool testPassConstraint(vm::Machine & m) const; |
| michael@0 | 59 | bool testConstraint(const Rule & r, vm::Machine &) const; |
| michael@0 | 60 | bool readRules(const byte * rule_map, const size_t num_entries, |
| michael@0 | 61 | const byte *precontext, const uint16 * sort_key, |
| michael@0 | 62 | const uint16 * o_constraint, const byte *constraint_data, |
| michael@0 | 63 | const uint16 * o_action, const byte * action_data, |
| michael@0 | 64 | Face &, Error &e); |
| michael@0 | 65 | bool readStates(const byte * starts, const byte * states, const byte * o_rule_map, Face &, Error &e); |
| michael@0 | 66 | bool readRanges(const byte * ranges, size_t num_ranges, Error &e); |
| michael@0 | 67 | uint16 glyphToCol(const uint16 gid) const; |
| michael@0 | 68 | bool runFSM(FiniteStateMachine & fsm, Slot * slot) const; |
| michael@0 | 69 | void dumpRuleEventConsidered(const FiniteStateMachine & fsm, const RuleEntry & re) const; |
| michael@0 | 70 | void dumpRuleEventOutput(const FiniteStateMachine & fsm, const Rule & r, Slot * os) const; |
| michael@0 | 71 | void adjustSlot(int delta, Slot * & slot_out, SlotMap &) const; |
| michael@0 | 72 | const Silf* m_silf; |
| michael@0 | 73 | uint16 * m_cols; |
| michael@0 | 74 | Rule * m_rules; // rules |
| michael@0 | 75 | RuleEntry * m_ruleMap; |
| michael@0 | 76 | uint16 * m_startStates; // prectxt length |
| michael@0 | 77 | uint16 * m_transitions; |
| michael@0 | 78 | State * m_states; |
| michael@0 | 79 | |
| michael@0 | 80 | byte m_flags; |
| michael@0 | 81 | byte m_iMaxLoop; |
| michael@0 | 82 | uint16 m_numGlyphs; |
| michael@0 | 83 | uint16 m_numRules; |
| michael@0 | 84 | uint16 m_numStates; |
| michael@0 | 85 | uint16 m_numTransition; |
| michael@0 | 86 | uint16 m_numSuccess; |
| michael@0 | 87 | uint16 m_successStart; |
| michael@0 | 88 | uint16 m_numColumns; |
| michael@0 | 89 | byte m_minPreCtxt; |
| michael@0 | 90 | byte m_maxPreCtxt; |
| michael@0 | 91 | vm::Machine::Code m_cPConstraint; |
| michael@0 | 92 | |
| michael@0 | 93 | private: //defensive |
| michael@0 | 94 | Pass(const Pass&); |
| michael@0 | 95 | Pass& operator=(const Pass&); |
| michael@0 | 96 | }; |
| michael@0 | 97 | |
| michael@0 | 98 | } // namespace graphite2 |
