Clifford Wolf:

	Restructured AST evaluation for control statements



git-svn-id: http://svn.clifford.at/openscad/trunk@37 b57f626f-c46c-0410-a088-ec61d464b74c

1 files changed, 75 insertions, 0 deletions

diff --git a/control.cc b/control.cc
new file mode 100644
index 0000000..82fa6bf
--- /dev/null
+++ b/control.cc
@@ -0,0 +1,75 @@
+/*
+ *  OpenSCAD (www.openscad.at)
+ *  Copyright (C) 2009  Clifford Wolf <clifford@clifford.at>
+ *
+ *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#define INCLUDE_ABSTRACT_NODE_DETAILS
+
+#include "openscad.h"
+
+enum control_type_e {
+	ASSIGN,
+	FOR,
+	IF
+};
+
+class ControlModule : public AbstractModule
+{
+public:
+	control_type_e type;
+	ControlModule(control_type_e type) : type(type) { }
+	virtual AbstractNode *evaluate(const Context *ctx, const QVector<QString> &call_argnames, const QVector<Value> &call_argvalues, const QVector<ModuleInstanciation*> arg_children, const Context *arg_context) const;
+};
+
+AbstractNode *ControlModule::evaluate(const Context*, const QVector<QString> &call_argnames, const QVector<Value> &call_argvalues, const QVector<ModuleInstanciation*> arg_children, const Context *arg_context) const
+{
+	AbstractNode *node = new AbstractNode();
+
+	if (type == ASSIGN)
+	{
+		/* FIXME */
+		Context c(arg_context);
+		for (int i = 0; i < call_argnames.size(); i++) {
+			if (!call_argnames[i].isEmpty())
+				c.set_variable(call_argnames[i], call_argvalues[i]);
+		}
+		foreach (ModuleInstanciation *v, arg_children) {
+			AbstractNode *n = v->evaluate(&c);
+			if (n != NULL)
+				node->children.append(n);
+		}
+	}
+
+	if (type == FOR)
+	{
+	}
+
+	if (type == IF)
+	{
+	}
+
+	return node;
+}
+
+void register_builtin_control()
+{
+	// builtin_modules["assign"] = new ControlModule(ASSIGN);
+	// builtin_modules["for"] = new ControlModule(FOR);
+	// builtin_modules["if"] = new ControlModule(IF);
+}
+