1 /* Build executable statement trees.
2 Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
3 Contributed by Andy Vaught
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* Executable statements are strung together into a singly linked list
23 of code structures. These structures are later translated into GCC
24 GENERIC tree structures and from there to executable code for a
34 /* Zeroes out the new_st structure. */
37 gfc_clear_new_st (void)
40 memset (&new_st
, '\0', sizeof (new_st
));
45 /* Get a gfc_code structure. */
52 c
= gfc_getmem (sizeof (gfc_code
));
53 c
->loc
= gfc_current_locus
;
58 /* Given some part of a gfc_code structure, append a set of code to
59 its tail, returning a pointer to the new tail. */
62 gfc_append_code (gfc_code
* tail
, gfc_code
* new)
67 while (tail
->next
!= NULL
)
73 while (new->next
!= NULL
)
80 /* Free a single code structure, but not the actual structure itself. */
83 gfc_free_statement (gfc_code
* p
)
87 gfc_free_expr (p
->expr
);
89 gfc_free_expr (p
->expr2
);
104 case EXEC_POINTER_ASSIGN
:
108 case EXEC_LABEL_ASSIGN
:
110 case EXEC_ARITHMETIC_IF
:
114 gfc_free_actual_arglist (p
->ext
.actual
);
118 if (p
->ext
.case_list
)
119 gfc_free_case_list (p
->ext
.case_list
);
123 gfc_free_iterator (p
->ext
.iterator
, 1);
127 case EXEC_DEALLOCATE
:
128 gfc_free_alloc_list (p
->ext
.alloc_list
);
132 gfc_free_open (p
->ext
.open
);
136 gfc_free_close (p
->ext
.close
);
142 gfc_free_filepos (p
->ext
.filepos
);
146 gfc_free_inquire (p
->ext
.inquire
);
151 gfc_free_dt (p
->ext
.dt
);
155 /* The ext.dt member is a duplicate pointer and doesn't need to
160 gfc_free_forall_iterator (p
->ext
.forall_iterator
);
164 gfc_internal_error ("gfc_free_statement(): Bad statement");
169 /* Free a code statement and all other code structures linked to it. */
172 gfc_free_statements (gfc_code
* p
)
181 gfc_free_statements (p
->block
);
182 gfc_free_statement (p
);