Fix API : functions to access fields properties
[babeltrace.git] / types / integer.c
index 7b2a3a97437f4053a3c70aad8a95d5601b89f060..808a4893680d3dc302a62d93f9b400299da9cffd 100644 (file)
 /*
+ * integer.c
+ *
  * BabelTrace - Integer Type Converter
  *
- * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
  *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  */
 
 #include <babeltrace/compiler.h>
 #include <babeltrace/align.h>
+#include <babeltrace/format.h>
 #include <babeltrace/types.h>
 #include <stdint.h>
 
-size_t integer_copy(unsigned char *dest, const struct format *fdest, 
-                   const unsigned char *src, const struct format *fsrc,
-                   const struct type_class *type_class)
+static
+struct definition *_integer_definition_new(struct declaration *declaration,
+                              struct definition_scope *parent_scope,
+                              GQuark field_name, int index,
+                              const char *root_name);
+static
+void _integer_definition_free(struct definition *definition);
+
+static
+void _integer_declaration_free(struct declaration *declaration)
 {
-       struct type_class_integer *int_class =
-               container_of(type_class, struct type_class_integer, p);
+       struct declaration_integer *integer_declaration =
+               container_of(declaration, struct declaration_integer, p);
+       g_free(integer_declaration);
+}
 
-       if (!int_class->signedness) {
-               uint64_t v;
+struct declaration_integer *
+       integer_declaration_new(size_t len, int byte_order,
+                        int signedness, size_t alignment, int base,
+                        enum ctf_string_encoding encoding,
+                        struct ctf_clock *clock)
+{
+       struct declaration_integer *integer_declaration;
 
-               v = fsrc->uint_read(src, int_class);
-               return fdest->uint_write(dest, int_class, v);
-       } else {
-               int64_t v;
+       integer_declaration = g_new(struct declaration_integer, 1);
+       integer_declaration->p.id = CTF_TYPE_INTEGER;
+       integer_declaration->p.alignment = alignment;
+       integer_declaration->p.declaration_free = _integer_declaration_free;
+       integer_declaration->p.definition_free = _integer_definition_free;
+       integer_declaration->p.definition_new = _integer_definition_new;
+       integer_declaration->p.ref = 1;
+       integer_declaration->len = len;
+       integer_declaration->byte_order = byte_order;
+       integer_declaration->signedness = signedness;
+       integer_declaration->base = base;
+       integer_declaration->encoding = encoding;
+       integer_declaration->clock = clock;
+       return integer_declaration;
+}
 
-               v = fsrc->int_read(src, int_class);
-               return fdest->int_write(dest, int_class, v);
-       }
+static
+struct definition *
+       _integer_definition_new(struct declaration *declaration,
+                               struct definition_scope *parent_scope,
+                               GQuark field_name, int index,
+                               const char *root_name)
+{
+       struct declaration_integer *integer_declaration =
+               container_of(declaration, struct declaration_integer, p);
+       struct definition_integer *integer;
+       int ret;
+
+       integer = g_new(struct definition_integer, 1);
+       declaration_ref(&integer_declaration->p);
+       integer->p.declaration = declaration;
+       integer->declaration = integer_declaration;
+       integer->p.ref = 1;
+       /*
+        * Use INT_MAX order to ensure that all fields of the parent
+        * scope are seen as being prior to this scope.
+        */
+       integer->p.index = root_name ? INT_MAX : index;
+       integer->p.name = field_name;
+       integer->p.path = new_definition_path(parent_scope, field_name,
+                                       root_name);
+       integer->p.scope = NULL;
+       integer->value._unsigned = 0;
+       ret = register_field_definition(field_name, &integer->p,
+                                       parent_scope);
+       assert(!ret);
+       return &integer->p;
 }
 
-void integer_type_free(struct type_class_integer *int_class)
+static
+void _integer_definition_free(struct definition *definition)
 {
-       g_free(int_class);
+       struct definition_integer *integer =
+               container_of(definition, struct definition_integer, p);
+
+       declaration_unref(integer->p.declaration);
+       g_free(integer);
 }
 
-static void _integer_type_free(struct type_class *type_class)
+enum ctf_string_encoding get_int_encoding(const struct definition *field)
 {
-       struct type_class_integer *int_class =
-               container_of(type_class, struct type_class_integer, p);
-       integer_type_free(int_class);
+       struct definition_integer *integer_definition;
+       const struct declaration_integer *integer_declaration;
+
+       integer_definition = container_of(field, struct definition_integer, p);
+       integer_declaration = integer_definition->declaration;
+
+       return integer_declaration->encoding;
 }
 
-struct type_class_integer *integer_type_new(const char *name,
-                                           size_t len, int byte_order,
-                                           int signedness,
-                                           size_t alignment)
+int get_int_base(const struct definition *field)
 {
-       struct type_class_integer *int_class;
-       int ret;
+       struct definition_integer *integer_definition;
+       const struct declaration_integer *integer_declaration;
+
+       integer_definition = container_of(field, struct definition_integer, p);
+       integer_declaration = integer_definition->declaration;
+
+       return integer_declaration->base;
+}
+
+int get_int_byte_order(const struct definition *field)
+{
+       struct definition_integer *integer_definition;
+       const struct declaration_integer *integer_declaration;
+
+       integer_definition = container_of(field, struct definition_integer, p);
+       integer_declaration = integer_definition->declaration;
+
+       return integer_declaration->byte_order;
+}
+
+int get_int_signedness(const struct definition *field)
+{
+       struct definition_integer *integer_definition;
+       const struct declaration_integer *integer_declaration;
+
+       integer_definition = container_of(field, struct definition_integer, p);
+       integer_declaration = integer_definition->declaration;
+
+       return integer_declaration->signedness;
+}
+
+uint64_t get_unsigned_int(const struct definition *field)
+{
+       struct definition_integer *integer_definition;
+       const struct declaration_integer *integer_declaration;
+
+       integer_definition = container_of(field, struct definition_integer, p);
+       integer_declaration = integer_definition->declaration;
+
+       if (!integer_declaration->signedness) {
+               return integer_definition->value._unsigned;
+       }
+       fprintf(stderr, "[warning] Extracting unsigned value in a signed int\n");
+       return (uint64_t)integer_definition->value._signed;
+}
+
+int64_t get_signed_int(const struct definition *field)
+{
+       struct definition_integer *integer_definition;
+       const struct declaration_integer *integer_declaration;
+
+       integer_definition = container_of(field, struct definition_integer, p);
+       integer_declaration = integer_definition->declaration;
 
-       int_class = g_new(struct type_class_integer, 1);
-       int_class->p.name = g_quark_from_string(name);
-       int_class->p.alignment = alignment;
-       int_class->p.copy = integer_copy;
-       int_class->p.free = _integer_type_free;
-       int_class->len = len;
-       int_class->byte_order = byte_order;
-       int_class->signedness = signedness;
-       if (int_class->p.name) {
-               ret = ctf_register_type(&int_class->p);
-               if (ret) {
-                       g_free(int_class);
-                       return NULL;
-               }
+       if (integer_declaration->signedness) {
+               return integer_definition->value._signed;
        }
-       return int_class;
+       fprintf(stderr, "[warning] Extracting signed value in an unsigned int\n");
+       return (int64_t)integer_definition->value._unsigned;
 }
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