int choose_action(cmdLine *pCmdLine, linked_list *head, var_list *var_head){
if(strcmp(pCmdLine->arguments[0], "quit") == 0){
return 1;
}
else if(strcmp(pCmdLine->arguments[0], "cd") == 0){
if((chdir(pCmdLine->arguments[1])) < 0){
perror("Error changing a dir: ");
}
return 0;
}
else if(strcmp(pCmdLine->arguments[0], "history") == 0){
if(head == 0){
perror("Error-no history");
return 0;
}
list_print(head);
return 0;
}
else if(strcmp(pCmdLine->arguments[0], "env") == 0){
print_var(var_head);
return 0;
}
else if(strcmp(pCmdLine->arguments[0], "rename") == 0){
rename_var(var_head, pCmdLine->arguments[1], pCmdLine->arguments[2]);
return 0;
}
else{
execute(pCmdLine);
return 0;
}
}
void ssa_cal()
{
int i=0;
for(i=0;i<num_fuc;i++)
{
for(int j=0;j<fuction[i].n_b;j++)
fuction[i].block[j].phi=-1;
dom_cal_fuc(i);
find_df(i);
find_phi(i);
rename_var(i);
}
}