1 # Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010
2 # Free Software Foundation, Inc.
3 # Contributed by Kelley Cook, June 2004.
4 # Original code from Neil Booth, May 2003.
6 # This program is free software; you can redistribute it and/or modify it
7 # under the terms of the GNU General Public License as published by the
8 # Free Software Foundation; either version 3, or (at your option) any
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; see the file COPYING3. If not see
18 # <http://www.gnu.org/licenses/>.
20 # Some common subroutines for use by opt[ch]-gen.awk.
22 # Return nonzero if FLAGS contains a flag matching REGEX.
23 function flag_set_p
(regex
, flags
)
25 return (" " flags
" ") ~
(" " regex
" ")
28 # Return STRING if FLAGS contains a flag matching regexp REGEX,
29 # otherwise return the empty string.
30 function test_flag
(regex
, flags
, string
)
32 if (flag_set_p
(regex
, flags
))
37 # If FLAGS contains a "NAME(...argument...)" flag, return the value
38 # of the argument. Return the empty string otherwise.
39 function opt_args
(name
, flags
)
42 if (flags !~
" " name
"\\(")
44 sub(".* " name
"\\(", "", flags
)
48 sub("}\\).*", "", flags
)
51 sub("\\).*", "", flags
)
56 # Return the Nth comma-separated element of S. Return the empty string
57 # if S does not contain N elements.
58 function nth_arg
(n
, s
)
63 sub("[^,]*, *", "", s
)
69 # Return a bitmask of CL_* values for option flags FLAGS.
70 function switch_flags
(flags
)
73 for (j =
0; j
< n_langs
; j
++) {
75 gsub ( "\\+", "\\+", regex
)
76 result = result test_flag
(regex
, flags
, " | " macros
[j
])
79 test_flag
("Common", flags
, " | CL_COMMON") \
80 test_flag
("Target", flags
, " | CL_TARGET") \
81 test_flag
("Save", flags
, " | CL_SAVE") \
82 test_flag
("Joined", flags
, " | CL_JOINED") \
83 test_flag
("JoinedOrMissing", flags
, " | CL_JOINED | CL_MISSING_OK") \
84 test_flag
("Separate", flags
, " | CL_SEPARATE") \
85 test_flag
("RejectNegative", flags
, " | CL_REJECT_NEGATIVE") \
86 test_flag
("UInteger", flags
, " | CL_UINTEGER") \
87 test_flag
("Undocumented", flags
, " | CL_UNDOCUMENTED") \
88 test_flag
("Warning", flags
, " | CL_WARNING") \
89 test_flag
("Optimization", flags
, " | CL_OPTIMIZATION") \
90 test_flag
("Report", flags
, " | CL_REPORT")
91 sub( "^0 \\| ", "", result
)
95 # If FLAGS includes a Var flag, return the name of the variable it specifies.
96 # Return the empty string otherwise.
97 function var_name
(flags
)
99 return nth_arg
(0, opt_args
("Var", flags
))
102 # Return true if the option described by FLAGS has a globally-visible state.
103 function global_state_p
(flags
)
105 return (var_name
(flags
) != "" \
106 || opt_args
("Mask", flags
) != "" \
107 || opt_args
("InverseMask", flags
) != "")
110 # Return true if the option described by FLAGS must have some state
111 # associated with it.
112 function needs_state_p
(flags
)
114 return flag_set_p
("Target", flags
)
117 # If FLAGS describes an option that needs a static state variable,
118 # return the name of that variable, otherwise return "". NAME is
119 # the name of the option.
120 function static_var
(name
, flags
)
122 if (global_state_p
(flags
) || !needs_state_p
(flags
))
124 gsub ("[^A-Za-z0-9]", "_", name
)
128 # Return the type of variable that should be associated with the given flags.
129 function var_type
(flags
)
131 if (!flag_set_p
("Joined.*", flags
))
133 else if (flag_set_p
("UInteger", flags
))
136 return "const char *"
139 # Return the type of variable that should be associated with the given flags
140 # for use within a structure. Simple variables are changed to signed char
141 # type instead of int to save space.
142 function var_type_struct
(flags
)
144 if (flag_set_p
("UInteger", flags
))
146 else if (!flag_set_p
("Joined.*", flags
)) {
147 if (flag_set_p
(".*Mask.*", flags
))
150 return "signed char "
153 return "const char *"
156 # Given that an option has flags FLAGS, return an initializer for the
157 # "var_cond" and "var_value" fields of its cl_options[] entry.
158 function var_set
(flags
)
160 s = nth_arg
(1, opt_args
("Var", flags
))
162 return "CLVC_EQUAL, " s
163 s = opt_args
("Mask", flags
);
165 vn = var_name
(flags
);
167 return "CLVC_BIT_SET, OPTION_MASK_" s
169 return "CLVC_BIT_SET, MASK_" s
171 s = nth_arg
(0, opt_args
("InverseMask", flags
));
173 vn = var_name
(flags
);
175 return "CLVC_BIT_CLEAR, OPTION_MASK_" s
177 return "CLVC_BIT_CLEAR, MASK_" s
179 if (var_type
(flags
) ==
"const char *")
180 return "CLVC_STRING, 0"
181 return "CLVC_BOOLEAN, 0"
184 # Given that an option called NAME has flags FLAGS, return an initializer
185 # for the "flag_var" field of its cl_options[] entry.
186 function var_ref
(name
, flags
)
188 name = var_name
(flags
) static_var
(name
, flags
)
191 if (opt_args
("Mask", flags
) != "")
192 return "&target_flags"
193 if (opt_args
("InverseMask", flags
) != "")
194 return "&target_flags"