1*1f5207b7SJohn Levon /* 2*1f5207b7SJohn Levon * Copyright (C) 2012 Oracle. 3*1f5207b7SJohn Levon * 4*1f5207b7SJohn Levon * This program is free software; you can redistribute it and/or 5*1f5207b7SJohn Levon * modify it under the terms of the GNU General Public License 6*1f5207b7SJohn Levon * as published by the Free Software Foundation; either version 2 7*1f5207b7SJohn Levon * of the License, or (at your option) any later version. 8*1f5207b7SJohn Levon * 9*1f5207b7SJohn Levon * This program is distributed in the hope that it will be useful, 10*1f5207b7SJohn Levon * but WITHOUT ANY WARRANTY; without even the implied warranty of 11*1f5207b7SJohn Levon * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12*1f5207b7SJohn Levon * GNU General Public License for more details. 13*1f5207b7SJohn Levon * 14*1f5207b7SJohn Levon * You should have received a copy of the GNU General Public License 15*1f5207b7SJohn Levon * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt 16*1f5207b7SJohn Levon */ 17*1f5207b7SJohn Levon 18*1f5207b7SJohn Levon /* 19*1f5207b7SJohn Levon * Store the states at the start of the function because this is something that 20*1f5207b7SJohn Levon * is used in a couple places. 21*1f5207b7SJohn Levon * 22*1f5207b7SJohn Levon */ 23*1f5207b7SJohn Levon 24*1f5207b7SJohn Levon #include "smatch.h" 25*1f5207b7SJohn Levon #include "smatch_slist.h" 26*1f5207b7SJohn Levon 27*1f5207b7SJohn Levon static int my_id; 28*1f5207b7SJohn Levon 29*1f5207b7SJohn Levon static struct stree *start_states; 30*1f5207b7SJohn Levon static struct stree_stack *saved_stack; save_start_states(struct statement * stmt)31*1f5207b7SJohn Levonstatic void save_start_states(struct statement *stmt) 32*1f5207b7SJohn Levon { 33*1f5207b7SJohn Levon start_states = clone_stree(__get_cur_stree()); 34*1f5207b7SJohn Levon } 35*1f5207b7SJohn Levon match_save_states(struct expression * expr)36*1f5207b7SJohn Levonstatic void match_save_states(struct expression *expr) 37*1f5207b7SJohn Levon { 38*1f5207b7SJohn Levon push_stree(&saved_stack, start_states); 39*1f5207b7SJohn Levon start_states = NULL; 40*1f5207b7SJohn Levon } 41*1f5207b7SJohn Levon match_restore_states(struct expression * expr)42*1f5207b7SJohn Levonstatic void match_restore_states(struct expression *expr) 43*1f5207b7SJohn Levon { 44*1f5207b7SJohn Levon free_stree(&start_states); 45*1f5207b7SJohn Levon start_states = pop_stree(&saved_stack); 46*1f5207b7SJohn Levon } 47*1f5207b7SJohn Levon match_end_func(void)48*1f5207b7SJohn Levonstatic void match_end_func(void) 49*1f5207b7SJohn Levon { 50*1f5207b7SJohn Levon free_stree(&start_states); 51*1f5207b7SJohn Levon } 52*1f5207b7SJohn Levon get_start_states(void)53*1f5207b7SJohn Levonstruct stree *get_start_states(void) 54*1f5207b7SJohn Levon { 55*1f5207b7SJohn Levon return start_states; 56*1f5207b7SJohn Levon } 57*1f5207b7SJohn Levon register_start_states(int id)58*1f5207b7SJohn Levonvoid register_start_states(int id) 59*1f5207b7SJohn Levon { 60*1f5207b7SJohn Levon my_id = id; 61*1f5207b7SJohn Levon 62*1f5207b7SJohn Levon add_hook(&save_start_states, AFTER_DEF_HOOK); 63*1f5207b7SJohn Levon add_hook(&match_save_states, INLINE_FN_START); 64*1f5207b7SJohn Levon add_hook(&match_restore_states, INLINE_FN_END); 65*1f5207b7SJohn Levon add_hook(&match_end_func, AFTER_FUNC_HOOK); 66*1f5207b7SJohn Levon } 67*1f5207b7SJohn Levon 68