along with CFF2 charstring interpreter factored out common code between CFF1 & CFF2 to CSInterpreter moved fetch_op from Interpreter to InterpEnv misc code clean up & bug fixespull/1113/head
Michiharu Ariza
6 years ago
parent
f57d6bcbca
commit
cef75ea41a
10 changed files with 278 additions and 118 deletions
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/*
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* Copyright © 2018 Adobe Systems Incorporated. |
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* |
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* This is part of HarfBuzz, a text shaping library. |
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* |
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* Permission is hereby granted, without written agreement and without |
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* license or royalty fees, to use, copy, modify, and distribute this |
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* software and its documentation for any purpose, provided that the |
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* above copyright notice and the following two paragraphs appear in |
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* all copies of this software. |
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* |
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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* DAMAGE. |
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* |
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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* |
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* Adobe Author(s): Michiharu Ariza |
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*/ |
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#ifndef HB_CFF2_INTERP_CS_HH |
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#define HB_CFF2_INTERP_CS_HH |
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#include "hb-private.hh" |
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#include "hb-cff-interp-cs-common-private.hh" |
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namespace CFF { |
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using namespace OT; |
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struct CFF2CSInterpEnv : CSInterpEnv<CFF2Subrs> |
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{ |
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inline void init (const ByteStr &str, const CFF2Subrs &globalSubrs_, const CFF2Subrs &localSubrs_) |
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{ |
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CSInterpEnv<CFF2Subrs>::init (str, globalSubrs_, localSubrs_); |
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ivs = 0; |
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} |
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inline bool fetch_op (OpCode &op) |
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{ |
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if (unlikely (substr.avail ())) |
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return CSInterpEnv<CFF2Subrs>::fetch_op (op); |
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/* make up return or endchar op */ |
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if (callStack.check_underflow ()) |
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op = OpCode_return; |
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else |
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op = OpCode_endchar; |
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return true; |
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} |
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inline unsigned int get_ivs (void) const { return ivs; } |
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inline void set_ivs (unsigned int ivs_) { ivs = ivs_; } |
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protected: |
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unsigned int ivs; |
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}; |
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template <typename PARAM> |
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struct CFF2CSOpSet : CSOpSet<CFF2Subrs, PARAM> |
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{ |
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static inline bool process_op (OpCode op, CFF2CSInterpEnv &env, PARAM& param) |
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{ |
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switch (op) { |
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case OpCode_blendcs: |
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env.clear_stack (); // XXX: TODO
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break; |
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case OpCode_vsindexcs: |
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{ |
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unsigned int ivs; |
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if (unlikely (!env.argStack.check_pop_uint (ivs))) return false; |
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env.set_ivs (ivs); |
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env.clear_stack (); |
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} |
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break; |
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default: |
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typedef CSOpSet<CFF2Subrs, PARAM> SUPER; |
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if (unlikely (!SUPER::process_op (op, env, param))) |
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return false; |
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break; |
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} |
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return true; |
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} |
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}; |
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template <typename OPSET, typename PARAM> |
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struct CFF2CSInterpreter : CSInterpreter<CFF2CSInterpEnv, OPSET, PARAM> {}; |
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} /* namespace CFF */ |
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#endif /* HB_CFF2_INTERP_CS_HH */ |
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