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[babeltrace.git] / types / integer.c
1 /*
2 * integer.c
3 *
4 * BabelTrace - Integer Type Converter
5 *
6 * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 */
18
19 #include <babeltrace/compiler.h>
20 #include <babeltrace/align.h>
21 #include <babeltrace/format.h>
22 #include <stdint.h>
23
24 static
25 struct declaration *_integer_declaration_new(struct type *type,
26 struct declaration_scope *parent_scope);
27 static
28 void _integer_declaration_free(struct declaration *declaration);
29
30 void integer_copy(struct stream_pos *dest, const struct format *fdest,
31 struct stream_pos *src, const struct format *fsrc,
32 struct declaration *declaration)
33 {
34 struct declaration_integer *integer =
35 container_of(declaration, struct declaration_integer, p);
36 struct type_integer *integer_type = integer->type;
37
38 if (!integer_type->signedness) {
39 uint64_t v;
40
41 v = fsrc->uint_read(src, integer_type);
42 fdest->uint_write(dest, integer_type, v);
43 } else {
44 int64_t v;
45
46 v = fsrc->int_read(src, integer_type);
47 fdest->int_write(dest, integer_type, v);
48 }
49 }
50
51 static
52 void _integer_type_free(struct type *type)
53 {
54 struct type_integer *integer_type =
55 container_of(type, struct type_integer, p);
56 g_free(integer_type);
57 }
58
59 struct type_integer *
60 integer_type_new(const char *name, size_t len, int byte_order,
61 int signedness, size_t alignment)
62 {
63 struct type_integer *integer_type;
64
65 integer_type = g_new(struct type_integer, 1);
66 integer_type->p.name = g_quark_from_string(name);
67 integer_type->p.alignment = alignment;
68 integer_type->p.copy = integer_copy;
69 integer_type->p.type_free = _integer_type_free;
70 integer_type->p.declaration_free = _integer_declaration_free;
71 integer_type->p.declaration_new = _integer_declaration_new;
72 integer_type->p.ref = 1;
73 integer_type->len = len;
74 integer_type->byte_order = byte_order;
75 integer_type->signedness = signedness;
76 return integer_type;
77 }
78
79 static
80 struct declaration *
81 _integer_declaration_new(struct type *type,
82 struct declaration_scope *parent_scope)
83 {
84 struct type_integer *integer_type =
85 container_of(type, struct type_integer, p);
86 struct declaration_integer *integer;
87
88 integer = g_new(struct declaration_integer, 1);
89 type_ref(&integer_type->p);
90 integer->p.type = type;
91 integer->type = integer_type;
92 integer->p.ref = 1;
93 integer->value._unsigned = 0;
94 return &integer->p;
95 }
96
97 static
98 void _integer_declaration_free(struct declaration *declaration)
99 {
100 struct declaration_integer *integer =
101 container_of(declaration, struct declaration_integer, p);
102
103 type_unref(integer->p.type);
104 g_free(integer);
105 }
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