Depsgraph: Comb code to a better state all over

Some summary of changes:

- Don't use DEG prefix for types and enumerator values:
  the code is already inside DEG namespace.

- Put code where it locally belongs to: avoid having one
  single header file with all sort of definitions in it.

- Take advantage of modern C++11 enabled by default.

1 files changed, 187 insertions, 0 deletions

diff --git a/source/blender/depsgraph/intern/node/deg_node.cc b/source/blender/depsgraph/intern/node/deg_node.cc
new file mode 100644
index 00000000000..cfded3d3c90
--- /dev/null
+++ b/source/blender/depsgraph/intern/node/deg_node.cc
@@ -0,0 +1,187 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2013 Blender Foundation.
+ * All rights reserved.
+ *
+ * Original Author: Joshua Leung
+ * Contributor(s): None Yet
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/depsgraph/intern/node/deg_node.cc
+ *  \ingroup depsgraph
+ */
+
+#include "intern/node/deg_node.h"
+
+#include <stdio.h>
+
+#include "BLI_utildefines.h"
+
+#include "intern/depsgraph.h"
+#include "intern/eval/deg_eval_copy_on_write.h"
+#include "intern/node/deg_node_component.h"
+#include "intern/node/deg_node_factory.h"
+#include "intern/node/deg_node_id.h"
+#include "intern/node/deg_node_operation.h"
+#include "intern/node/deg_node_time.h"
+
+namespace DEG {
+
+const char *nodeClassAsString(NodeClass node_class)
+{
+	switch (node_class) {
+		case NodeClass::GENERIC: return "GENERIC";
+		case NodeClass::COMPONENT: return "COMPONENT";
+		case NodeClass::OPERATION: return "OPERATION";
+	}
+	BLI_assert(!"Unhandled node class, should never happen.");
+	return "UNKNOWN";
+}
+
+const char *nodeTypeAsString(NodeType type)
+{
+	switch (type) {
+		case NodeType::UNDEFINED: return "UNDEFINED";
+		case NodeType::OPERATION: return "OPERATION";
+		/* **** Generic Types **** */
+		case NodeType::TIMESOURCE: return "TIMESOURCE";
+		case NodeType::ID_REF: return "ID_REF";
+		/* **** Outer Types **** */
+		case NodeType::PARAMETERS: return "PARAMETERS";
+		case NodeType::PROXY: return "PROXY";
+		case NodeType::ANIMATION: return "ANIMATION";
+		case NodeType::TRANSFORM: return "TRANSFORM";
+		case NodeType::GEOMETRY: return "GEOMETRY";
+		case NodeType::SEQUENCER: return "SEQUENCER";
+		case NodeType::LAYER_COLLECTIONS: return "LAYER_COLLECTIONS";
+		case NodeType::COPY_ON_WRITE: return "COPY_ON_WRITE";
+		case NodeType::OBJECT_FROM_LAYER: return "OBJECT_FROM_LAYER";
+		/* **** Evaluation-Related Outer Types (with Subdata) **** */
+		case NodeType::EVAL_POSE: return "EVAL_POSE";
+		case NodeType::BONE: return "BONE";
+		case NodeType::PARTICLE_SYSTEM: return "PARTICLE_SYSTEM";
+		case NodeType::PARTICLE_SETTINGS: return "PARTICLE_SETTINGS";
+		case NodeType::SHADING: return "SHADING";
+		case NodeType::SHADING_PARAMETERS: return "SHADING_PARAMETERS";
+		case NodeType::CACHE: return "CACHE";
+		case NodeType::POINT_CACHE: return "POINT_CACHE";
+		case NodeType::BATCH_CACHE: return "BATCH_CACHE";
+		/* Duplication. */
+		case NodeType::DUPLI: return "DUPLI";
+		/* Synchronization. */
+		case NodeType::SYNCHRONIZE: return "SYNCHRONIZE";
+		/* Generic datablock. */
+		case NodeType::GENERIC_DATABLOCK: return "GENERIC_DATABLOCK";
+
+		/* Total number of meaningful node types. */
+		case NodeType::NUM_TYPES: return "SpecialCase";
+	}
+	BLI_assert(!"Unhandled node type, should never happen.");
+	return "UNKNOWN";
+}
+
+/*******************************************************************************
+ * Type information.
+ */
+
+Node::TypeInfo::TypeInfo(NodeType type,
+                             const char *type_name,
+                             int id_recalc_tag)
+        : type(type),
+          type_name(type_name),
+          id_recalc_tag(id_recalc_tag)
+{
+}
+
+/*******************************************************************************
+ * Evaluation statistics.
+ */
+
+Node::Stats::Stats()
+{
+	reset();
+}
+
+void Node::Stats::reset()
+{
+	current_time = 0.0;
+}
+
+void Node::Stats::reset_current()
+{
+	current_time = 0.0;
+}
+
+/*******************************************************************************
+ * Node itself.
+ */
+
+Node::Node()
+{
+	name = "";
+}
+
+Node::~Node()
+{
+	/* Free links. */
+	/* NOTE: We only free incoming links. This is to avoid double-free of links
+	 * when we're trying to free same link from both it's sides. We don't have
+	 * dangling links so this is not a problem from memory leaks point of view. */
+	for (Relation *rel : inlinks) {
+		OBJECT_GUARDED_DELETE(rel, Relation);
+	}
+}
+
+
+/* Generic identifier for Depsgraph Nodes. */
+string Node::identifier() const
+{
+	return string(nodeTypeAsString(type)) + " : " + name;
+}
+
+NodeClass Node::get_class() const {
+	if (type == NodeType::OPERATION) {
+		return NodeClass::OPERATION;
+	}
+	else if (type < NodeType::PARAMETERS) {
+		return NodeClass::GENERIC;
+	}
+	else {
+		return NodeClass::COMPONENT;
+	}
+}
+
+/*******************************************************************************
+ * Generic nodes definition.
+ */
+
+DEG_DEPSNODE_DEFINE(TimeSourceNode, NodeType::TIMESOURCE, "Time Source");
+static DepsNodeFactoryImpl<TimeSourceNode> DNTI_TIMESOURCE;
+
+DEG_DEPSNODE_DEFINE(IDNode, NodeType::ID_REF, "ID Node");
+static DepsNodeFactoryImpl<IDNode> DNTI_ID_REF;
+
+void deg_register_base_depsnodes()
+{
+	register_node_typeinfo(&DNTI_TIMESOURCE);
+	register_node_typeinfo(&DNTI_ID_REF);
+}
+
+}  // namespace DEG