2 * smatch/smatch_dinfo.c
4 * Copyright (C) 2010 Dan Carpenter.
6 * Licensed under the Open Software License version 1.1
11 * smatch_dinfo.c has helper functions for handling data_info structs
22 #include "smatch_slist.h"
23 #include "smatch_extra.h"
25 struct data_info
*get_dinfo(struct smatch_state
*state
)
29 return (struct data_info
*)state
->data
;
33 struct range_list
*estate_ranges(struct smatch_state
*state
)
37 return get_dinfo(state
)->value_ranges
;
40 struct related_list
*estate_related(struct smatch_state
*state
)
44 return get_dinfo(state
)->related
;
47 long long estate_min(struct smatch_state
*state
)
49 return rl_min(estate_ranges(state
));
52 long long estate_max(struct smatch_state
*state
)
54 return rl_max(estate_ranges(state
));
57 static struct data_info
*alloc_dinfo(void)
59 struct data_info
*ret
;
61 ret
= __alloc_data_info(0);
63 ret
->type
= DATA_RANGE
;
64 ret
->value_ranges
= NULL
;
68 static struct data_info
*alloc_dinfo_range(long long min
, long long max
)
70 struct data_info
*ret
;
73 add_range(&ret
->value_ranges
, min
, max
);
77 static struct data_info
*alloc_dinfo_range_list(struct range_list
*rl
)
79 struct data_info
*ret
;
82 ret
->value_ranges
= rl
;
86 static struct data_info
*clone_dinfo(struct data_info
*dinfo
)
88 struct data_info
*ret
;
91 ret
->related
= clone_related_list(dinfo
->related
);
92 ret
->value_ranges
= clone_range_list(dinfo
->value_ranges
);
96 struct smatch_state
*clone_estate(struct smatch_state
*state
)
98 struct smatch_state
*ret
;
100 ret
= __alloc_smatch_state(0);
101 ret
->name
= state
->name
;
102 ret
->data
= clone_dinfo(get_dinfo(state
));
106 struct smatch_state
*alloc_estate_empty(void)
108 struct smatch_state
*state
;
109 struct data_info
*dinfo
;
111 dinfo
= alloc_dinfo();
112 state
= __alloc_smatch_state(0);
118 static struct smatch_state
*alloc_estate_no_name(int val
)
120 struct smatch_state
*state
;
122 state
= __alloc_smatch_state(0);
123 state
->data
= (void *)alloc_dinfo_range(val
, val
);
127 /* We do this because ->value_ranges is a list */
128 struct smatch_state
*extra_undefined(void)
130 struct smatch_state
*ret
;
132 ret
= __alloc_smatch_state(0);
133 ret
->data
= alloc_dinfo_range(whole_range
.min
, whole_range
.max
);
134 ret
->name
= "unknown";
138 struct smatch_state
*extra_empty(void)
140 struct smatch_state
*ret
;
142 ret
= __alloc_smatch_state(0);
144 ret
->data
= alloc_dinfo();
148 struct smatch_state
*alloc_estate(long long val
)
150 struct smatch_state
*state
;
152 state
= alloc_estate_no_name(val
);
153 state
->name
= show_ranges(get_dinfo(state
)->value_ranges
);
157 struct smatch_state
*alloc_estate_range(long long min
, long long max
)
159 struct smatch_state
*state
;
161 if (min
== whole_range
.min
&& max
== whole_range
.max
)
162 return extra_undefined();
163 state
= __alloc_smatch_state(0);
164 state
->data
= (void *)alloc_dinfo_range(min
, max
);
165 state
->name
= show_ranges(get_dinfo(state
)->value_ranges
);
169 struct smatch_state
*alloc_estate_range_list(struct range_list
*rl
)
171 struct smatch_state
*state
;
174 return extra_empty();
176 if (is_whole_range_rl(rl
))
177 return extra_undefined();
179 state
= __alloc_smatch_state(0);
180 state
->data
= (void *)alloc_dinfo_range_list(rl
);
181 state
->name
= show_ranges(get_dinfo(state
)->value_ranges
);