2 * Copyright © 2018 Adobe Inc.
4 * This is part of HarfBuzz, a text shaping library.
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.
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
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.
24 * Adobe Author(s): Michiharu Ariza
26 #ifndef HB_CFF1_INTERP_CS_HH
27 #define HB_CFF1_INTERP_CS_HH
30 #include "hb-cff-interp-cs-common.hh"
36 typedef biased_subrs_t
<CFF1Subrs
> cff1_biased_subrs_t
;
38 struct cff1_cs_interp_env_t
: cs_interp_env_t
<number_t
, CFF1Subrs
>
40 template <typename ACC
>
41 void init (const byte_str_t
&str
, ACC
&acc
, unsigned int fd
)
43 SUPER::init (str
, acc
.globalSubrs
, acc
.privateDicts
[fd
].localSubrs
);
44 processed_width
= false;
50 void fini () { SUPER::fini (); }
52 void set_width (bool has_width_
)
54 if (likely (!processed_width
&& (SUPER::argStack
.get_count () > 0)))
58 width
= SUPER::argStack
[0];
63 processed_width
= true;
72 void set_in_seac (bool _in_seac
) { in_seac
= _in_seac
; }
76 unsigned int arg_start
;
81 typedef cs_interp_env_t
<number_t
, CFF1Subrs
> SUPER
;
84 template <typename OPSET
, typename PARAM
, typename PATH
=path_procs_null_t
<cff1_cs_interp_env_t
, PARAM
>>
85 struct cff1_cs_opset_t
: cs_opset_t
<number_t
, OPSET
, cff1_cs_interp_env_t
, PARAM
, PATH
>
87 /* PostScript-originated legacy opcodes (OpCode_add etc) are unsupported */
88 /* Type 1-originated deprecated opcodes, seac behavior of endchar and dotsection are supported */
90 static void process_op (op_code_t op
, cff1_cs_interp_env_t
&env
, PARAM
& param
)
93 case OpCode_dotsection
:
94 SUPER::flush_args_and_op (op
, env
, param
);
98 OPSET::check_width (op
, env
, param
);
99 if (env
.argStack
.get_count () >= 4)
101 OPSET::process_seac (env
, param
);
103 OPSET::flush_args_and_op (op
, env
, param
);
104 env
.set_endchar (true);
108 SUPER::process_op (op
, env
, param
);
112 static void check_width (op_code_t op
, cff1_cs_interp_env_t
&env
, PARAM
& param
)
114 if (!env
.processed_width
)
116 bool has_width
= false;
124 case OpCode_hintmask
:
125 case OpCode_cntrmask
:
126 has_width
= ((env
.argStack
.get_count () & 1) != 0);
130 has_width
= (env
.argStack
.get_count () > 1);
133 has_width
= (env
.argStack
.get_count () > 2);
138 env
.set_width (has_width
);
142 static void process_seac (cff1_cs_interp_env_t
&env
, PARAM
& param
)
146 static void flush_args (cff1_cs_interp_env_t
&env
, PARAM
& param
)
148 SUPER::flush_args (env
, param
);
149 env
.clear_args (); /* pop off width */
153 typedef cs_opset_t
<number_t
, OPSET
, cff1_cs_interp_env_t
, PARAM
, PATH
> SUPER
;
156 template <typename OPSET
, typename PARAM
>
157 struct cff1_cs_interpreter_t
: cs_interpreter_t
<cff1_cs_interp_env_t
, OPSET
, PARAM
> {};
159 } /* namespace CFF */
161 #endif /* HB_CFF1_INTERP_CS_HH */