types/array.c

   1 /*
   2  * array.c
   3  *
   4  * BabelTrace - Array 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/format.h>
  21
  22 static
  23 struct declaration *_array_declaration_new(struct type *type,
  24                         struct declaration_scope *parent_scope);
  25 static
  26 void _array_declaration_free(struct declaration *declaration);
  27
  28 void array_copy(struct stream_pos *dest, const struct format *fdest,
  29                 struct stream_pos *src, const struct format *fsrc,
  30                 struct declaration *declaration)
  31 {
  32         struct declaration_array *array =
  33                 container_of(declaration, struct declaration_array, p);
  34         struct type_array *array_type = array->type;
  35         uint64_t i;
  36
  37         fsrc->array_begin(src, array_type);
  38         fdest->array_begin(dest, array_type);
  39
  40         for (i = 0; i < array_type->len; i++) {
  41                 struct declaration *elem = array->current_element.declaration;
  42                 elem->type->copy(dest, fdest, src, fsrc, elem);
  43         }
  44         fsrc->array_end(src, array_type);
  45         fdest->array_end(dest, array_type);
  46 }
  47
  48 static
  49 void _array_type_free(struct type *type)
  50 {
  51         struct type_array *array_type =
  52                 container_of(type, struct type_array, p);
  53
  54         free_type_scope(array_type->scope);
  55         type_unref(array_type->elem);
  56         g_free(array_type);
  57 }
  58
  59 struct type_array *
  60         array_type_new(const char *name, size_t len, struct type *elem_type,
  61                        struct type_scope *parent_scope)
  62 {
  63         struct type_array *array_type;
  64         struct type *type;
  65
  66         array_type = g_new(struct type_array, 1);
  67         type = &array_type->p;
  68         array_type->len = len;
  69         type_ref(elem_type);
  70         array_type->elem = elem_type;
  71         array_type->scope = new_type_scope(parent_scope);
  72         type->id = CTF_TYPE_ARRAY;
  73         type->name = g_quark_from_string(name);
  74         /* No need to align the array, the first element will align itself */
  75         type->alignment = 1;
  76         type->copy = array_copy;
  77         type->type_free = _array_type_free;
  78         type->declaration_new = _array_declaration_new;
  79         type->declaration_free = _array_declaration_free;
  80         type->ref = 1;
  81         return array_type;
  82 }
  83
  84 static
  85 struct declaration *
  86         _array_declaration_new(struct type *type,
  87                                struct declaration_scope *parent_scope)
  88 {
  89         struct type_array *array_type =
  90                 container_of(type, struct type_array, p);
  91         struct declaration_array *array;
  92
  93         array = g_new(struct declaration_array, 1);
  94         type_ref(&array_type->p);
  95         array->p.type = type;
  96         array->type = array_type;
  97         array->p.ref = 1;
  98         array->scope = new_declaration_scope(parent_scope);
  99         array->current_element.declaration =
 100                 array_type->elem->declaration_new(array_type->elem,
 101                                                   parent_scope);
 102         return &array->p;
 103 }
 104
 105 static
 106 void _array_declaration_free(struct declaration *declaration)
 107 {
 108         struct declaration_array *array =
 109                 container_of(declaration, struct declaration_array, p);
 110         struct declaration *elem_declaration =
 111                 array->current_element.declaration;
 112
 113         elem_declaration->type->declaration_free(elem_declaration);
 114         free_declaration_scope(array->scope);
 115         type_unref(array->p.type);
 116         g_free(array);
 117 }