Add missing libpopt dependency in README file
[babeltrace.git] / types / array.c
CommitLineData
d06d03db 1/*
ccd7e1c8 2 * array.c
d06d03db 3 *
ccd7e1c8 4 * BabelTrace - Array Type Converter
d06d03db 5 *
c054553d 6 * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
d06d03db 7 *
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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:
d06d03db 14 *
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15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
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17 */
18
19#include <babeltrace/compiler.h>
4c8bfb7e 20#include <babeltrace/format.h>
0f980a35 21#include <inttypes.h>
d06d03db 22
c054553d 23static
f6625916 24struct definition *_array_definition_new(struct declaration *declaration,
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25 struct definition_scope *parent_scope,
26 GQuark field_name, int index);
c054553d 27static
e1151715 28void _array_definition_free(struct definition *definition);
c054553d 29
c5e74408 30int array_rw(struct stream_pos *pos, struct definition *definition)
d06d03db 31{
d11e9c49 32 struct definition_array *array_definition =
e1151715 33 container_of(definition, struct definition_array, p);
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34 const struct declaration_array *array_declaration =
35 array_definition->declaration;
c054553d 36 uint64_t i;
c5e74408 37 int ret;
d06d03db 38
d11e9c49 39 /* No need to align, because the first field will align itself. */
f6625916 40 for (i = 0; i < array_declaration->len; i++) {
0f980a35 41 struct definition *elem =
d11e9c49 42 g_array_index(array_definition->elems, struct field, i).definition;
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43 ret = generic_rw(pos, elem);
44 if (ret)
45 return ret;
d06d03db 46 }
c5e74408 47 return 0;
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48}
49
c054553d 50static
f6625916 51void _array_declaration_free(struct declaration *declaration)
d06d03db 52{
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53 struct declaration_array *array_declaration =
54 container_of(declaration, struct declaration_array, p);
c054553d 55
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56 free_declaration_scope(array_declaration->scope);
57 declaration_unref(array_declaration->elem);
58 g_free(array_declaration);
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59}
60
f6625916 61struct declaration_array *
ab4cf058 62 array_declaration_new(size_t len,
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63 struct declaration *elem_declaration,
64 struct declaration_scope *parent_scope)
d06d03db 65{
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66 struct declaration_array *array_declaration;
67 struct declaration *declaration;
d06d03db 68
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69 array_declaration = g_new(struct declaration_array, 1);
70 declaration = &array_declaration->p;
71 array_declaration->len = len;
72 declaration_ref(elem_declaration);
73 array_declaration->elem = elem_declaration;
74 array_declaration->scope = new_declaration_scope(parent_scope);
75 declaration->id = CTF_TYPE_ARRAY;
d06d03db 76 /* No need to align the array, the first element will align itself */
f6625916 77 declaration->alignment = 1;
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78 declaration->declaration_free = _array_declaration_free;
79 declaration->definition_new = _array_definition_new;
80 declaration->definition_free = _array_definition_free;
81 declaration->ref = 1;
82 return array_declaration;
d06d03db 83}
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84
85static
e1151715 86struct definition *
f6625916 87 _array_definition_new(struct declaration *declaration,
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88 struct definition_scope *parent_scope,
89 GQuark field_name, int index)
c054553d 90{
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91 struct declaration_array *array_declaration =
92 container_of(declaration, struct declaration_array, p);
e1151715 93 struct definition_array *array;
0f980a35 94 uint64_t i;
c054553d 95
e1151715 96 array = g_new(struct definition_array, 1);
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97 declaration_ref(&array_declaration->p);
98 array->p.declaration = declaration;
99 array->declaration = array_declaration;
c054553d 100 array->p.ref = 1;
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101 array->p.index = index;
102 array->scope = new_definition_scope(parent_scope, field_name);
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103 array->elems = g_array_sized_new(FALSE, TRUE, sizeof(struct field),
104 array_declaration->len);
105 g_array_set_size(array->elems, array_declaration->len);
106 for (i = 0; i < array_declaration->len; i++) {
107 struct field *field;
108 GString *str;
109 GQuark name;
110
111 str = g_string_new("");
112 g_string_printf(str, "[%" PRIu64 "]", i);
113 name = g_quark_from_string(str->str);
114 (void) g_string_free(str, TRUE);
115
116 field = &g_array_index(array->elems, struct field, i);
117 field->name = name;
118 field->definition = array_declaration->elem->definition_new(array_declaration->elem,
119 array->scope,
120 name, i);
121 }
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122 return &array->p;
123}
124
125static
e1151715 126void _array_definition_free(struct definition *definition)
c054553d 127{
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128 struct definition_array *array =
129 container_of(definition, struct definition_array, p);
0f980a35 130 uint64_t i;
c054553d 131
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132 for (i = 0; i < array->elems->len; i++) {
133 struct field *field;
134
135 field = &g_array_index(array->elems, struct field, i);
136 field->definition->declaration->definition_free(field->definition);
137 }
138 (void) g_array_free(array->elems, TRUE);
e1151715 139 free_definition_scope(array->scope);
f6625916 140 declaration_unref(array->p.declaration);
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141 g_free(array);
142}
0f980a35 143
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144uint64_t array_len(struct definition_array *array)
145{
146 return array->elems->len;
147}
148
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149struct definition *array_index(struct definition_array *array, uint64_t i)
150{
151 if (i >= array->elems->len)
152 return NULL;
153 return g_array_index(array->elems, struct field, i).definition;
154}
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