2 * sparse/smatch_hooks.c
4 * Copyright (C) 2006 Dan Carpenter.
6 * Licensed under the Open Software License version 1.1
18 struct hook_container
{
20 enum data_type data_type
;
23 ALLOCATOR(hook_container
, "hook functions");
24 DECLARE_PTR_LIST(hook_func_list
, struct hook_container
);
25 static struct hook_func_list
*hook_funcs
;
26 static struct hook_func_list
*merge_funcs
;
27 static struct hook_func_list
*unmatched_state_funcs
;
29 struct scope_container
{
33 ALLOCATOR(scope_container
, "scope hook functions");
34 DECLARE_PTR_LIST(scope_hook_list
, struct scope_container
);
35 DECLARE_PTR_LIST(scope_hook_stack
, struct scope_hook_list
);
36 static struct scope_hook_stack
*scope_hooks
;
38 void add_hook(void *func
, enum hook_type type
)
40 struct hook_container
*container
= __alloc_hook_container(0);
41 container
->hook_type
= type
;
45 container
->data_type
= EXPR_PTR
;
48 container
->data_type
= STMT_PTR
;
51 container
->data_type
= EXPR_PTR
;
53 case DECLARATION_HOOK
:
54 container
->data_type
= SYMBOL_PTR
;
57 container
->data_type
= EXPR_PTR
;
59 case CALL_ASSIGNMENT_HOOK
:
60 container
->data_type
= EXPR_PTR
;
63 container
->data_type
= EXPR_PTR
;
66 container
->data_type
= EXPR_PTR
;
68 case WHOLE_CONDITION_HOOK
:
69 container
->data_type
= EXPR_PTR
;
71 case FUNCTION_CALL_HOOK
:
72 container
->data_type
= EXPR_PTR
;
75 container
->data_type
= EXPR_PTR
;
81 container
->data_type
= SYMBOL_PTR
;
84 container
->data_type
= SYMBOL_PTR
;
87 container
->data_type
= SYMBOL_PTR
;
90 container
->data_type
= EXPR_PTR
;
93 /* nothing needed... */
96 add_ptr_list(&hook_funcs
, container
);
99 void add_merge_hook(int client_id
, merge_func_t
*func
)
101 struct hook_container
*container
= __alloc_hook_container(0);
102 container
->data_type
= client_id
;
103 container
->fn
= func
;
104 add_ptr_list(&merge_funcs
, container
);
107 void add_unmatched_state_hook(int client_id
, unmatched_func_t
*func
)
109 struct hook_container
*container
= __alloc_hook_container(0);
110 container
->data_type
= client_id
;
111 container
->fn
= func
;
112 add_ptr_list(&unmatched_state_funcs
, container
);
115 static void pass_to_client(void * fn
)
117 typedef void (expr_func
)();
118 ((expr_func
*) fn
)();
121 static void pass_expr_to_client(void * fn
, void * data
)
123 typedef void (expr_func
)(struct expression
*expr
);
124 ((expr_func
*) fn
)((struct expression
*) data
);
127 static void pass_stmt_to_client(void * fn
, void * data
)
129 typedef void (stmt_func
)(struct statement
*stmt
);
130 ((stmt_func
*) fn
)((struct statement
*) data
);
133 static void pass_sym_to_client(void * fn
, void * data
)
135 typedef void (sym_func
)(struct symbol
*sym
);
136 ((sym_func
*) fn
)((struct symbol
*) data
);
139 void __pass_to_client(void *data
, enum hook_type type
)
141 struct hook_container
*container
;
146 FOR_EACH_PTR(hook_funcs
, container
) {
147 if (container
->hook_type
== type
) {
148 switch(container
->data_type
) {
150 pass_expr_to_client(container
->fn
, data
);
153 pass_stmt_to_client(container
->fn
, data
);
156 pass_sym_to_client(container
->fn
, data
);
160 } END_FOR_EACH_PTR(container
);
163 void __pass_to_client_no_data(enum hook_type type
)
165 struct hook_container
*container
;
167 FOR_EACH_PTR(hook_funcs
, container
) {
168 if (container
->hook_type
== type
)
169 pass_to_client(container
->fn
);
170 } END_FOR_EACH_PTR(container
);
173 void __pass_case_to_client(struct expression
*switch_expr
,
174 struct expression
*case_expr
)
176 typedef void (case_func
)(struct expression
*switch_expr
,
177 struct expression
*case_expr
);
178 struct hook_container
*container
;
180 FOR_EACH_PTR(hook_funcs
, container
) {
181 if (container
->hook_type
== CASE_HOOK
) {
182 ((case_func
*) container
->fn
)(switch_expr
, case_expr
);
184 } END_FOR_EACH_PTR(container
);
187 int __has_merge_function(int client_id
)
189 struct hook_container
*tmp
;
191 FOR_EACH_PTR(merge_funcs
, tmp
) {
192 if (tmp
->data_type
== client_id
)
194 } END_FOR_EACH_PTR(tmp
);
198 struct smatch_state
*__client_merge_function(int owner
, const char *name
,
200 struct smatch_state
*s1
,
201 struct smatch_state
*s2
)
203 struct smatch_state
*tmp_state
;
204 struct hook_container
*tmp
;
206 /* Pass NULL states first and the rest alphabetically by name */
207 if (!s2
|| (s1
&& strcmp(s2
->name
, s1
->name
) < 0)) {
213 FOR_EACH_PTR(merge_funcs
, tmp
) {
214 if (tmp
->data_type
== owner
)
215 return ((merge_func_t
*) tmp
->fn
)(name
, sym
, s1
, s2
);
216 } END_FOR_EACH_PTR(tmp
);
220 struct smatch_state
*__client_unmatched_state_function(struct sm_state
*sm
)
222 struct hook_container
*tmp
;
224 FOR_EACH_PTR(unmatched_state_funcs
, tmp
) {
225 if (tmp
->data_type
== sm
->owner
)
226 return ((unmatched_func_t
*) tmp
->fn
)(sm
);
227 } END_FOR_EACH_PTR(tmp
);
231 static struct scope_hook_list
*pop_scope_hook_list(struct scope_hook_stack
**stack
)
233 struct scope_hook_list
*hook_list
;
235 hook_list
= last_ptr_list((struct ptr_list
*)*stack
);
236 delete_ptr_list_last((struct ptr_list
**)stack
);
240 static void push_scope_hook_list(struct scope_hook_stack
**stack
, struct scope_hook_list
*l
)
242 add_ptr_list(stack
, l
);
245 void add_scope_hook(scope_hook
*fn
, void *data
)
247 struct scope_hook_list
*hook_list
;
248 struct scope_container
*new;
252 hook_list
= pop_scope_hook_list(&scope_hooks
);
253 new = __alloc_scope_container(0);
256 add_ptr_list(&hook_list
, new);
257 push_scope_hook_list(&scope_hooks
, hook_list
);
260 void __push_scope_hooks(void)
262 push_scope_hook_list(&scope_hooks
, NULL
);
265 void __call_scope_hooks(void)
267 struct scope_hook_list
*hook_list
;
268 struct scope_container
*tmp
;
273 hook_list
= pop_scope_hook_list(&scope_hooks
);
274 FOR_EACH_PTR(hook_list
, tmp
) {
275 ((scope_hook
*) tmp
->fn
)(tmp
->data
);
276 __free_scope_container(tmp
);
277 } END_FOR_EACH_PTR(tmp
);