Mercurial > cpython-lru_cache-weakref

annotate Parser/node.c @ 13255:916fb024ce94 legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Change copyright notice.
author Guido van Rossum <guido@python.org>
date Fri, 30 Jun 2000 23:50:40 +0000
parents 63436719d12e
children 87ee82e5c56d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
1 /***********************************************************
2060
146890653a57 Added 1995 to copyright message.
Guido van Rossum <guido@python.org>
parents: 1848
diff changeset
2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
146890653a57 Added 1995 to copyright message.
Guido van Rossum <guido@python.org>
parents: 1848
diff changeset
3 The Netherlands.
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
4
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
5 All Rights Reserved
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
6
13255
916fb024ce94 Change copyright notice.
Guido van Rossum <guido@python.org>
parents: 12970
diff changeset
7 Copyright (c) 2000, BeOpen.com.
916fb024ce94 Change copyright notice.
Guido van Rossum <guido@python.org>
parents: 12970
diff changeset
8 Copyright (c) 1995-2000, Corporation for National Research Initiatives.
916fb024ce94 Change copyright notice.
Guido van Rossum <guido@python.org>
parents: 12970
diff changeset
9 Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
916fb024ce94 Change copyright notice.
Guido van Rossum <guido@python.org>
parents: 12970
diff changeset
10 All rights reserved.
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
11
13255
916fb024ce94 Change copyright notice.
Guido van Rossum <guido@python.org>
parents: 12970
diff changeset
12 See the file "Misc/COPYRIGHT" for information on usage and
916fb024ce94 Change copyright notice.
Guido van Rossum <guido@python.org>
parents: 12970
diff changeset
13 redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
145
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
14
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
15 ******************************************************************/
853b736a6a9e Added copyright notice.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
16
12970
63436719d12e Add new parser error code, E_OVERFLOW. This error is returned when
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 5379
diff changeset
17 #include <limits.h>
63436719d12e Add new parser error code, E_OVERFLOW. This error is returned when
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 5379
diff changeset
18
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
19 /* Parse tree node implementation */
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
20
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
21 #include "pgenheaders.h"
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
22 #include "node.h"
12970
63436719d12e Add new parser error code, E_OVERFLOW. This error is returned when
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 5379
diff changeset
23 #include "errcode.h"
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
24
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
25 node *
5379
1c9a84e0981d Another directory quickly renamed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
26 PyNode_New(type)
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
27 int type;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
28 {
5379
1c9a84e0981d Another directory quickly renamed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
29 node *n = PyMem_NEW(node, 1);
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
30 if (n == NULL)
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
31 return NULL;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
32 n->n_type = type;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
33 n->n_str = NULL;
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
34 n->n_lineno = 0;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
35 n->n_nchildren = 0;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
36 n->n_child = NULL;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
37 return n;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
38 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
39
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
40 #define XXX 3 /* Node alignment factor to speed up realloc */
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
41 #define XXXROUNDUP(n) ((n) == 1 ? 1 : ((n) + XXX - 1) / XXX * XXX)
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
42
12970
63436719d12e Add new parser error code, E_OVERFLOW. This error is returned when
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 5379
diff changeset
43 int
5379
1c9a84e0981d Another directory quickly renamed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
44 PyNode_AddChild(n1, type, str, lineno)
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
45 register node *n1;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
46 int type;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
47 char *str;
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
48 int lineno;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
49 {
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
50 register int nch = n1->n_nchildren;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
51 register int nch1 = nch+1;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
52 register node *n;
12970
63436719d12e Add new parser error code, E_OVERFLOW. This error is returned when
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 5379
diff changeset
53 if (nch == SHRT_MAX || nch < 0)
63436719d12e Add new parser error code, E_OVERFLOW. This error is returned when
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 5379
diff changeset
54 return E_OVERFLOW;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
55 if (XXXROUNDUP(nch) < nch1) {
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
56 n = n1->n_child;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
57 nch1 = XXXROUNDUP(nch1);
5379
1c9a84e0981d Another directory quickly renamed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
58 PyMem_RESIZE(n, node, nch1);
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
59 if (n == NULL)
12970
63436719d12e Add new parser error code, E_OVERFLOW. This error is returned when
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 5379
diff changeset
60 return E_NOMEM;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
61 n1->n_child = n;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
62 }
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
63 n = &n1->n_child[n1->n_nchildren++];
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
64 n->n_type = type;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
65 n->n_str = str;
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
66 n->n_lineno = lineno;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
67 n->n_nchildren = 0;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
68 n->n_child = NULL;
12970
63436719d12e Add new parser error code, E_OVERFLOW. This error is returned when
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 5379
diff changeset
69 return 0;
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
70 }
76
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
71
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
72 /* Forward */
5379
1c9a84e0981d Another directory quickly renamed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
73 static void freechildren Py_PROTO((node *));
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
74
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
75
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
76 void
5379
1c9a84e0981d Another directory quickly renamed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
77 PyNode_Free(n)
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
78 node *n;
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
79 {
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
80 if (n != NULL) {
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
81 freechildren(n);
5379
1c9a84e0981d Another directory quickly renamed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
82 PyMem_DEL(n);
86
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
83 }
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
84 }
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
parents: 76
diff changeset
85
76
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
86 static void
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
87 freechildren(n)
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
88 node *n;
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
89 {
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
90 int i;
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
91 for (i = NCH(n); --i >= 0; )
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
92 freechildren(CHILD(n, i));
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
93 if (n->n_child != NULL)
5379
1c9a84e0981d Another directory quickly renamed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
94 PyMem_DEL(n->n_child);
76
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
95 if (STR(n) != NULL)
5379
1c9a84e0981d Another directory quickly renamed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
96 PyMem_DEL(STR(n));
76
ede86799705b Add function to free an entire parse tree.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
97 }