/src/mupdf/thirdparty/harfbuzz/src/hb-cff1-interp-cs.hh

Source (jump to first uncovered line)
/*
 * Copyright © 2018 Adobe Inc.
 *
 *  This is part of HarfBuzz, a text shaping library.
 *
 * Permission is hereby granted, without written agreement and without
 * license or royalty fees, to use, copy, modify, and distribute this
 * software and its documentation for any purpose, provided that the
 * above copyright notice and the following two paragraphs appear in
 * all copies of this software.
 *
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 *
 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 *
 * Adobe Author(s): Michiharu Ariza
 */
#ifndef HB_CFF1_INTERP_CS_HH
#define HB_CFF1_INTERP_CS_HH

#include "hb.hh"
#include "hb-cff-interp-cs-common.hh"

namespace CFF {

using namespace OT;

typedef biased_subrs_t<CFF1Subrs>   cff1_biased_subrs_t;

struct cff1_cs_interp_env_t : cs_interp_env_t<number_t, CFF1Subrs>
{
  template <typename ACC>
  cff1_cs_interp_env_t (const hb_ubytes_t &str, ACC &acc, unsigned int fd)
    : SUPER (str, acc.globalSubrs, acc.privateDicts[fd].localSubrs)
  {
    processed_width = false;
    has_width = false;
    arg_start = 0;
    in_seac = false;
  }

  void set_width (bool has_width_)
  {
    if (likely (!processed_width && (SUPER::argStack.get_count () > 0)))
    {
      if (has_width_)
      {
  width = SUPER::argStack[0];
  has_width = true;
  arg_start = 1;
      }
    }
    processed_width = true;
  }

  void clear_args ()
  {
    arg_start = 0;
    SUPER::clear_args ();
  }

  void set_in_seac (bool _in_seac) { in_seac = _in_seac; }

  bool    processed_width;
  bool    has_width;
  unsigned int  arg_start;
  number_t  width;
  bool    in_seac;

  private:
  typedef cs_interp_env_t<number_t, CFF1Subrs> SUPER;
};

template <typename OPSET, typename PARAM, typename PATH=path_procs_null_t<cff1_cs_interp_env_t, PARAM>>
struct cff1_cs_opset_t : cs_opset_t<number_t, OPSET, cff1_cs_interp_env_t, PARAM, PATH>
{
  /* PostScript-originated legacy opcodes (OpCode_add etc) are unsupported */
  /* Type 1-originated deprecated opcodes, seac behavior of endchar and dotsection are supported */

  static void process_op (op_code_t op, cff1_cs_interp_env_t &env, PARAM& param)
  {
    switch (op) {
      case OpCode_dotsection:
  SUPER::flush_args_and_op (op, env, param);
  break;

      case OpCode_endchar:
  OPSET::check_width (op, env, param);
  if (env.argStack.get_count () >= 4)
  {
    OPSET::process_seac (env, param);
  }
  OPSET::flush_args_and_op (op, env, param);
  env.set_endchar (true);
  break;

      default:
  SUPER::process_op (op, env, param);
    }
  }

  static void check_width (op_code_t op, cff1_cs_interp_env_t &env, PARAM& param)
  {
    if (!env.processed_width)
    {
      bool  has_width = false;
      switch (op)
      {
  case OpCode_endchar:
  case OpCode_hstem:
  case OpCode_hstemhm:
  case OpCode_vstem:
  case OpCode_vstemhm:
  case OpCode_hintmask:
  case OpCode_cntrmask:
    has_width = ((env.argStack.get_count () & 1) != 0);
    break;
  case OpCode_hmoveto:
  case OpCode_vmoveto:
    has_width = (env.argStack.get_count () > 1);
    break;
  case OpCode_rmoveto:
    has_width = (env.argStack.get_count () > 2);
    break;
  default:
    return;
      }
      env.set_width (has_width);
    }
  }

  static void process_seac (cff1_cs_interp_env_t &env, PARAM& param)
  {
  }

  static void flush_args (cff1_cs_interp_env_t &env, PARAM& param)
  {
    SUPER::flush_args (env, param);
    env.clear_args ();  /* pop off width */
  }

  private:
  typedef cs_opset_t<number_t, OPSET, cff1_cs_interp_env_t, PARAM, PATH>  SUPER;
};

template <typename OPSET, typename PARAM>
using cff1_cs_interpreter_t = cs_interpreter_t<cff1_cs_interp_env_t, OPSET, PARAM>;

} /* namespace CFF */

#endif /* HB_CFF1_INTERP_CS_HH */

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright © 2018 Adobe Inc.
3		*
4		* This is part of HarfBuzz, a text shaping library.
5		*
6		* Permission is hereby granted, without written agreement and without
7		* license or royalty fees, to use, copy, modify, and distribute this
8		* software and its documentation for any purpose, provided that the
9		* above copyright notice and the following two paragraphs appear in
10		* all copies of this software.
11		*
12		* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13		* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14		* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15		* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16		* DAMAGE.
17		*
18		* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19		* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20		* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21		* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22		* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23		*
24		* Adobe Author(s): Michiharu Ariza
25		*/
26		#ifndef HB_CFF1_INTERP_CS_HH
27		#define HB_CFF1_INTERP_CS_HH
28
29		#include "hb.hh"
30		#include "hb-cff-interp-cs-common.hh"
31
32		namespace CFF {
33
34		using namespace OT;
35
36		typedef biased_subrs_t<CFF1Subrs> cff1_biased_subrs_t;
37
38		struct cff1_cs_interp_env_t : cs_interp_env_t<number_t, CFF1Subrs>
39		{
40		template <typename ACC>
41		cff1_cs_interp_env_t (const hb_ubytes_t &str, ACC &acc, unsigned int fd)
42		: SUPER (str, acc.globalSubrs, acc.privateDicts[fd].localSubrs)
43	0	{
44	0	processed_width = false;
45	0	has_width = false;
46	0	arg_start = 0;
47	0	in_seac = false;
48	0	}
49
50		void set_width (bool has_width_)
51	0	{
52	0	if (likely (!processed_width && (SUPER::argStack.get_count () > 0)))
53	0	{
54	0	if (has_width_)
55	0	{
56	0	width = SUPER::argStack[0];
57	0	has_width = true;
58	0	arg_start = 1;
59	0	}
60	0	}
61	0	processed_width = true;
62	0	}
63
64		void clear_args ()
65	0	{
66	0	arg_start = 0;
67	0	SUPER::clear_args ();
68	0	}
69
70	0	void set_in_seac (bool _in_seac) { in_seac = _in_seac; }
71
72		bool processed_width;
73		bool has_width;
74		unsigned int arg_start;
75		number_t width;
76		bool in_seac;
77
78		private:
79		typedef cs_interp_env_t<number_t, CFF1Subrs> SUPER;
80		};
81
82		template <typename OPSET, typename PARAM, typename PATH=path_procs_null_t<cff1_cs_interp_env_t, PARAM>>
83		struct cff1_cs_opset_t : cs_opset_t<number_t, OPSET, cff1_cs_interp_env_t, PARAM, PATH>
84		{
85		/* PostScript-originated legacy opcodes (OpCode_add etc) are unsupported */
86		/* Type 1-originated deprecated opcodes, seac behavior of endchar and dotsection are supported */
87
88		static void process_op (op_code_t op, cff1_cs_interp_env_t &env, PARAM& param)
89	0	{
90	0	switch (op) {
91	0	case OpCode_dotsection:
92	0	SUPER::flush_args_and_op (op, env, param);
93	0	break;
94
95	0	case OpCode_endchar:
96	0	OPSET::check_width (op, env, param);
97	0	if (env.argStack.get_count () >= 4)
98	0	{
99	0	OPSET::process_seac (env, param);
100	0	}
101	0	OPSET::flush_args_and_op (op, env, param);
102	0	env.set_endchar (true);
103	0	break;
104
105	0	default:
106	0	SUPER::process_op (op, env, param);
107	0	}
108	0	} Unexecuted instantiation: CFF::cff1_cs_opset_t<cff1_cs_opset_extents_t, cff1_extents_param_t, cff1_path_procs_extents_t>::process_op(unsigned int, CFF::cff1_cs_interp_env_t&, cff1_extents_param_t&) Unexecuted instantiation: CFF::cff1_cs_opset_t<cff1_cs_opset_path_t, cff1_path_param_t, cff1_path_procs_path_t>::process_op(unsigned int, CFF::cff1_cs_interp_env_t&, cff1_path_param_t&) Unexecuted instantiation: CFF::cff1_cs_opset_t<cff1_cs_opset_seac_t, get_seac_param_t, CFF::path_procs_null_t<CFF::cff1_cs_interp_env_t, get_seac_param_t> >::process_op(unsigned int, CFF::cff1_cs_interp_env_t&, get_seac_param_t&)
109
110		static void check_width (op_code_t op, cff1_cs_interp_env_t &env, PARAM& param)
111	0	{
112	0	if (!env.processed_width)
113	0	{
114	0	bool has_width = false;
115	0	switch (op)
116	0	{
117	0	case OpCode_endchar:
118	0	case OpCode_hstem:
119	0	case OpCode_hstemhm:
120	0	case OpCode_vstem:
121	0	case OpCode_vstemhm:
122	0	case OpCode_hintmask:
123	0	case OpCode_cntrmask:
124	0	has_width = ((env.argStack.get_count () & 1) != 0);
125	0	break;
126	0	case OpCode_hmoveto:
127	0	case OpCode_vmoveto:
128	0	has_width = (env.argStack.get_count () > 1);
129	0	break;
130	0	case OpCode_rmoveto:
131	0	has_width = (env.argStack.get_count () > 2);
132	0	break;
133	0	default:
134	0	return;
135	0	}
136	0	env.set_width (has_width);
137	0	}
138	0	} Unexecuted instantiation: CFF::cff1_cs_opset_t<cff1_cs_opset_extents_t, cff1_extents_param_t, cff1_path_procs_extents_t>::check_width(unsigned int, CFF::cff1_cs_interp_env_t&, cff1_extents_param_t&) Unexecuted instantiation: CFF::cff1_cs_opset_t<cff1_cs_opset_path_t, cff1_path_param_t, cff1_path_procs_path_t>::check_width(unsigned int, CFF::cff1_cs_interp_env_t&, cff1_path_param_t&) Unexecuted instantiation: CFF::cff1_cs_opset_t<cff1_cs_opset_seac_t, get_seac_param_t, CFF::path_procs_null_t<CFF::cff1_cs_interp_env_t, get_seac_param_t> >::check_width(unsigned int, CFF::cff1_cs_interp_env_t&, get_seac_param_t&)
139
140		static void process_seac (cff1_cs_interp_env_t &env, PARAM& param)
141		{
142		}
143
144		static void flush_args (cff1_cs_interp_env_t &env, PARAM& param)
145	0	{
146	0	SUPER::flush_args (env, param);
147	0	env.clear_args (); /* pop off width */
148	0	} Unexecuted instantiation: CFF::cff1_cs_opset_t<cff1_cs_opset_extents_t, cff1_extents_param_t, cff1_path_procs_extents_t>::flush_args(CFF::cff1_cs_interp_env_t&, cff1_extents_param_t&) Unexecuted instantiation: CFF::cff1_cs_opset_t<cff1_cs_opset_path_t, cff1_path_param_t, cff1_path_procs_path_t>::flush_args(CFF::cff1_cs_interp_env_t&, cff1_path_param_t&) Unexecuted instantiation: CFF::cff1_cs_opset_t<cff1_cs_opset_seac_t, get_seac_param_t, CFF::path_procs_null_t<CFF::cff1_cs_interp_env_t, get_seac_param_t> >::flush_args(CFF::cff1_cs_interp_env_t&, get_seac_param_t&)
149
150		private:
151		typedef cs_opset_t<number_t, OPSET, cff1_cs_interp_env_t, PARAM, PATH> SUPER;
152		};
153
154		template <typename OPSET, typename PARAM>
155		using cff1_cs_interpreter_t = cs_interpreter_t<cff1_cs_interp_env_t, OPSET, PARAM>;
156
157		} /* namespace CFF */
158
159		#endif /* HB_CFF1_INTERP_CS_HH */

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Created: 2024-07-05 06:13