Mercurial > hg > CbC > CbC_gcc
annotate gcc/tree-iterator.h @ 144:8f4e72ab4e11
fix segmentation fault caused by nothing next cur_op to end
author | Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp> |
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date | Sun, 23 Dec 2018 21:23:56 +0900 |
parents | 84e7813d76e9 |
children | 1830386684a0 |
rev | line source |
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63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1 /* Iterator routines for manipulating GENERIC tree statement list. |
131 | 2 Copyright (C) 2003-2018 Free Software Foundation, Inc. |
0 | 3 Contributed by Andrew MacLeod <amacleod@redhat.com> |
4 | |
5 This file is part of GCC. | |
6 | |
7 GCC is free software; you can redistribute it and/or modify | |
8 it under the terms of the GNU General Public License as published by | |
9 the Free Software Foundation; either version 3, or (at your option) | |
10 any later version. | |
11 | |
12 GCC is distributed in the hope that it will be useful, | |
13 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 GNU General Public License for more details. | |
16 | |
17 You should have received a copy of the GNU General Public License | |
18 along with GCC; see the file COPYING3. If not see | |
19 <http://www.gnu.org/licenses/>. */ | |
20 | |
21 | |
22 /* This file is dependent upon the implementation of tree's. It provides an | |
23 abstract interface to the tree objects such that if all tree creation and | |
24 manipulations are done through this interface, we can easily change the | |
25 implementation of tree's, and not impact other code. */ | |
26 | |
27 #ifndef GCC_TREE_ITERATOR_H | |
28 #define GCC_TREE_ITERATOR_H 1 | |
29 | |
30 /* Iterator object for GENERIC or GIMPLE TREE statements. */ | |
31 | |
111 | 32 struct tree_stmt_iterator { |
0 | 33 struct tree_statement_list_node *ptr; |
34 tree container; | |
111 | 35 }; |
0 | 36 |
37 static inline tree_stmt_iterator | |
38 tsi_start (tree t) | |
39 { | |
40 tree_stmt_iterator i; | |
41 | |
42 i.ptr = STATEMENT_LIST_HEAD (t); | |
43 i.container = t; | |
44 | |
45 return i; | |
46 } | |
47 | |
48 static inline tree_stmt_iterator | |
49 tsi_last (tree t) | |
50 { | |
51 tree_stmt_iterator i; | |
52 | |
53 i.ptr = STATEMENT_LIST_TAIL (t); | |
54 i.container = t; | |
55 | |
56 return i; | |
57 } | |
58 | |
59 static inline bool | |
60 tsi_end_p (tree_stmt_iterator i) | |
61 { | |
62 return i.ptr == NULL; | |
63 } | |
64 | |
65 static inline bool | |
66 tsi_one_before_end_p (tree_stmt_iterator i) | |
67 { | |
68 return i.ptr != NULL && i.ptr->next == NULL; | |
69 } | |
70 | |
71 static inline void | |
72 tsi_next (tree_stmt_iterator *i) | |
73 { | |
74 i->ptr = i->ptr->next; | |
75 } | |
76 | |
77 static inline void | |
78 tsi_prev (tree_stmt_iterator *i) | |
79 { | |
80 i->ptr = i->ptr->prev; | |
81 } | |
82 | |
83 static inline tree * | |
84 tsi_stmt_ptr (tree_stmt_iterator i) | |
85 { | |
86 return &i.ptr->stmt; | |
87 } | |
88 | |
89 static inline tree | |
90 tsi_stmt (tree_stmt_iterator i) | |
91 { | |
92 return i.ptr->stmt; | |
93 } | |
94 | |
95 enum tsi_iterator_update | |
96 { | |
97 TSI_NEW_STMT, /* Only valid when single statement is added, move | |
98 iterator to it. */ | |
99 TSI_SAME_STMT, /* Leave the iterator at the same statement. */ | |
100 TSI_CHAIN_START, /* Only valid when chain of statements is added, move | |
101 iterator to the first statement in the chain. */ | |
102 TSI_CHAIN_END, /* Only valid when chain of statements is added, move | |
103 iterator to the last statement in the chain. */ | |
104 TSI_CONTINUE_LINKING /* Move iterator to whatever position is suitable for | |
105 linking other statements/chains of statements in | |
106 the same direction. */ | |
107 }; | |
108 | |
109 extern void tsi_link_before (tree_stmt_iterator *, tree, | |
110 enum tsi_iterator_update); | |
111 extern void tsi_link_after (tree_stmt_iterator *, tree, | |
112 enum tsi_iterator_update); | |
113 | |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
114 extern void tsi_delink (tree_stmt_iterator *); |
0 | 115 |
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
116 extern tree alloc_stmt_list (void); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
117 extern void free_stmt_list (tree); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
118 extern void append_to_statement_list (tree, tree *); |
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
119 extern void append_to_statement_list_force (tree, tree *); |
111 | 120 extern tree expr_first (tree); |
121 extern tree expr_last (tree); | |
0 | 122 |
123 #endif /* GCC_TREE_ITERATOR_H */ |