ctf-text: sequence: fix uninitialized return value
[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 *
ccd7e1c8
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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.
d06d03db
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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,
05c749e5 25 struct definition_scope *parent_scope,
98df1c9f 26 GQuark field_name, int index, const char *root_name);
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++) {
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41 struct definition *field =
42 g_ptr_array_index(array_definition->elems, i);
43 ret = generic_rw(pos, field);
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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,
05c749e5 88 struct definition_scope *parent_scope,
98df1c9f 89 GQuark field_name, int index, const char *root_name)
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;
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94 int ret;
95 int i;
c054553d 96
e1151715 97 array = g_new(struct definition_array, 1);
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98 declaration_ref(&array_declaration->p);
99 array->p.declaration = declaration;
100 array->declaration = array_declaration;
c054553d 101 array->p.ref = 1;
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102 /*
103 * Use INT_MAX order to ensure that all fields of the parent
104 * scope are seen as being prior to this scope.
105 */
106 array->p.index = root_name ? INT_MAX : index;
b1a2f580 107 array->p.name = field_name;
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108 array->p.path = new_definition_path(parent_scope, field_name, root_name);
109 array->scope = new_definition_scope(parent_scope, field_name, root_name);
110 ret = register_field_definition(field_name, &array->p,
111 parent_scope);
112 assert(!ret);
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113 array->string = NULL;
114 array->elems = NULL;
115
116 if (array_declaration->elem->id == CTF_TYPE_INTEGER) {
117 struct declaration_integer *integer_declaration =
118 container_of(array_declaration->elem, struct declaration_integer, p);
119
120 if (integer_declaration->encoding == CTF_STRING_UTF8
121 || integer_declaration->encoding == CTF_STRING_ASCII) {
122
123 array->string = g_string_new("");
124
125 if (integer_declaration->len == CHAR_BIT
126 && integer_declaration->p.alignment == CHAR_BIT) {
127 return &array->p;
128 }
129 }
130 }
131
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132 array->elems = g_ptr_array_sized_new(array_declaration->len);
133 g_ptr_array_set_size(array->elems, array_declaration->len);
0f980a35 134 for (i = 0; i < array_declaration->len; i++) {
b1a2f580 135 struct definition **field;
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136 GString *str;
137 GQuark name;
138
139 str = g_string_new("");
98df1c9f 140 g_string_printf(str, "[%u]", (unsigned int) i);
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141 name = g_quark_from_string(str->str);
142 (void) g_string_free(str, TRUE);
143
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144 field = (struct definition **) &g_ptr_array_index(array->elems, i);
145 *field = array_declaration->elem->definition_new(array_declaration->elem,
0f980a35 146 array->scope,
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147 name, i, NULL);
148 if (!*field)
149 goto error;
0f980a35 150 }
81dee1bb 151
c054553d 152 return &array->p;
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153
154error:
155 for (i--; i >= 0; i--) {
156 struct definition *field;
157
158 field = g_ptr_array_index(array->elems, i);
159 field->declaration->definition_free(field);
160 }
161 (void) g_ptr_array_free(array->elems, TRUE);
162 free_definition_scope(array->scope);
163 declaration_unref(array->p.declaration);
164 g_free(array);
165 return NULL;
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166}
167
168static
e1151715 169void _array_definition_free(struct definition *definition)
c054553d 170{
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171 struct definition_array *array =
172 container_of(definition, struct definition_array, p);
0f980a35 173 uint64_t i;
c054553d 174
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175 if (array->string)
176 (void) g_string_free(array->string, TRUE);
177 if (array->elems) {
178 for (i = 0; i < array->elems->len; i++) {
179 struct definition *field;
0f980a35 180
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181 field = g_ptr_array_index(array->elems, i);
182 field->declaration->definition_free(field);
183 }
184 (void) g_ptr_array_free(array->elems, TRUE);
0f980a35 185 }
e1151715 186 free_definition_scope(array->scope);
f6625916 187 declaration_unref(array->p.declaration);
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188 g_free(array);
189}
0f980a35 190
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191uint64_t array_len(struct definition_array *array)
192{
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193 if (!array->elems)
194 return array->string->len;
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195 return array->elems->len;
196}
197
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198struct definition *array_index(struct definition_array *array, uint64_t i)
199{
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200 if (!array->elems)
201 return NULL;
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202 if (i >= array->elems->len)
203 return NULL;
b1a2f580 204 return g_ptr_array_index(array->elems, i);
0f980a35 205}
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