| | 1 | /* |
| | 2 | * sequence.c |
| | 3 | * |
| | 4 | * BabelTrace - Sequence 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 | #ifndef max |
| | 23 | #define max(a, b) ((a) < (b) ? (b) : (a)) |
| | 24 | #endif |
| | 25 | |
| | 26 | static |
| | 27 | struct declaration *_sequence_declaration_new(struct type *type, |
| | 28 | struct declaration_scope *parent_scope); |
| | 29 | static |
| | 30 | void _sequence_declaration_free(struct declaration *declaration); |
| | 31 | |
| | 32 | void sequence_copy(struct stream_pos *dest, const struct format *fdest, |
| | 33 | struct stream_pos *src, const struct format *fsrc, |
| | 34 | struct declaration *declaration) |
| | 35 | { |
| | 36 | struct declaration_sequence *sequence = |
| | 37 | container_of(declaration, struct declaration_sequence, p); |
| | 38 | struct type_sequence *sequence_type = sequence->type; |
| | 39 | uint64_t i; |
| | 40 | |
| | 41 | fsrc->sequence_begin(src, sequence_type); |
| | 42 | fdest->sequence_begin(dest, sequence_type); |
| | 43 | |
| | 44 | sequence->len->p.type->copy(dest, fdest, src, fsrc, |
| | 45 | &sequence->len->p); |
| | 46 | |
| | 47 | for (i = 0; i < sequence->len->value._unsigned; i++) { |
| | 48 | struct declaration *elem_type = |
| | 49 | sequence->current_element.declaration; |
| | 50 | elem_type->p.type->copy(dest, fdest, src, fsrc, elem_type); |
| | 51 | } |
| | 52 | fsrc->sequence_end(src, sequence_type); |
| | 53 | fdest->sequence_end(dest, sequence_type); |
| | 54 | } |
| | 55 | |
| | 56 | static |
| | 57 | void _sequence_type_free(struct type *type) |
| | 58 | { |
| | 59 | struct type_sequence *sequence_type = |
| | 60 | container_of(type, struct type_sequence, p); |
| | 61 | |
| | 62 | type_unref(&sequence_type->len_type->p); |
| | 63 | type_unref(sequence_type->elem); |
| | 64 | g_free(sequence_type); |
| | 65 | } |
| | 66 | |
| | 67 | struct type_sequence * |
| | 68 | sequence_type_new(const char *name, struct type_integer *len_type, |
| | 69 | struct type *elem_type) |
| | 70 | { |
| | 71 | struct type_sequence *sequence_type; |
| | 72 | struct type *type; |
| | 73 | int ret; |
| | 74 | |
| | 75 | sequence_type = g_new(struct type_sequence, 1); |
| | 76 | type = &sequence_type->p; |
| | 77 | assert(!len_type->signedness); |
| | 78 | type_ref(&len_type->p); |
| | 79 | sequence_type->len_type = len_type; |
| | 80 | type_ref(elem_type); |
| | 81 | sequence_type->elem = elem_type; |
| | 82 | type->name = g_quark_from_string(name); |
| | 83 | type->alignment = max(len_type->p.alignment, elem_type->alignment); |
| | 84 | type->copy = sequence_copy; |
| | 85 | type->type_free = _sequence_type_free; |
| | 86 | type->declaration_new = _sequence_declaration_new; |
| | 87 | type->declaration_free = _sequence_declaration_free; |
| | 88 | type->ref = 1; |
| | 89 | |
| | 90 | if (type->name) { |
| | 91 | ret = register_type(type); |
| | 92 | if (ret) |
| | 93 | goto error_register; |
| | 94 | } |
| | 95 | return sequence_type; |
| | 96 | |
| | 97 | error_register: |
| | 98 | type_unref(&len_type->p); |
| | 99 | type_unref(elem_type); |
| | 100 | g_free(sequence_type); |
| | 101 | return NULL; |
| | 102 | } |
| | 103 | |
| | 104 | static |
| | 105 | struct declaration *_sequence_declaration_new(struct type *type, |
| | 106 | struct declaration_scope *parent_scope) |
| | 107 | { |
| | 108 | struct type_sequence *sequence_type = |
| | 109 | container_of(type, struct type_sequence, p); |
| | 110 | struct declaration_sequence *sequence; |
| | 111 | struct declaration *len_parent; |
| | 112 | |
| | 113 | sequence = g_new(struct declaration_sequence, 1); |
| | 114 | type_ref(&sequence_type->p); |
| | 115 | sequence->p.type = sequence_type; |
| | 116 | sequence->p.ref = 1; |
| | 117 | sequence->scope = new_declaration_scope(parent_scope); |
| | 118 | len_parent = |
| | 119 | sequence_type->len_type.p->type_new(&sequence_type->len_type.p, |
| | 120 | parent_scope); |
| | 121 | sequence->len = |
| | 122 | container_of(len_parent, struct declaration_integer, p); |
| | 123 | sequence->current_element.declaration = |
| | 124 | sequence_type->elem.p->type_new(&sequence_type->elem.p, |
| | 125 | parent_scope); |
| | 126 | return &sequence->p; |
| | 127 | } |
| | 128 | |
| | 129 | static |
| | 130 | void _sequence_declaration_free(struct declaration *declaration) |
| | 131 | { |
| | 132 | struct type_sequence *sequence = |
| | 133 | container_of(declaration, struct type_sequence, p); |
| | 134 | struct declaration *len_declaration = sequence->len; |
| | 135 | struct declaration *elem_declaration = |
| | 136 | sequence->current_element.declaration; |
| | 137 | |
| | 138 | len_declaration->p.type->declaration_free(len_declaration); |
| | 139 | elem_declaration->p.type->declaration_free(elem_declaration); |
| | 140 | free_declaration_scope(sequence->scope); |
| | 141 | type_unref(sequence->p.type); |
| | 142 | g_free(sequence); |
| | 143 | } |
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