reorganized file structure layout. more to follow...

git-svn-id: http://svn.clifford.at/openscad/trunk@364 b57f626f-c46c-0410-a088-ec61d464b74c

1 files changed, 103 insertions, 0 deletions

diff --git a/src/context.cc b/src/context.cc
new file mode 100644
index 0000000..15a2ea6
--- /dev/null
+++ b/src/context.cc
@@ -0,0 +1,103 @@
+/*
+ *  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
+ *
+ */
+
+#include "openscad.h"
+#include "printutils.h"
+
+Context::Context(const Context *parent)
+{
+	this->parent = parent;
+	functions_p = NULL;
+	modules_p = NULL;
+	inst_p = NULL;
+	ctx_stack.append(this);
+}
+
+Context::~Context()
+{
+	ctx_stack.pop_back();
+}
+
+void Context::args(const QVector<QString> &argnames, const QVector<Expression*> &argexpr,
+		const QVector<QString> &call_argnames, const QVector<Value> &call_argvalues)
+{
+	for (int i=0; i<argnames.size(); i++) {
+		set_variable(argnames[i], i < argexpr.size() && argexpr[i] ? argexpr[i]->evaluate(this->parent) : Value());
+	}
+
+	int posarg = 0;
+	for (int i=0; i<call_argnames.size(); i++) {
+		if (call_argnames[i].isEmpty()) {
+			if (posarg < argnames.size())
+				set_variable(argnames[posarg++], call_argvalues[i]);
+		} else {
+			set_variable(call_argnames[i], call_argvalues[i]);
+		}
+	}
+}
+
+QVector<const Context*> Context::ctx_stack;
+
+void Context::set_variable(QString name, Value value)
+{
+	if (name.startsWith("$"))
+		config_variables[name] = value;
+	else
+		variables[name] = value;
+}
+
+Value Context::lookup_variable(QString name, bool silent) const
+{
+	if (name.startsWith("$")) {
+		for (int i = ctx_stack.size()-1; i >= 0; i--) {
+			if (ctx_stack[i]->config_variables.contains(name))
+				return ctx_stack[i]->config_variables[name];
+		}
+		return Value();
+	}
+	if (variables.contains(name))
+		return variables[name];
+	if (parent)
+		return parent->lookup_variable(name, silent);
+	if (!silent)
+		PRINTA("WARNING: Ignoring unkown variable '%1'.", name);
+	return Value();
+}
+
+Value Context::evaluate_function(QString name, const QVector<QString> &argnames, const QVector<Value> &argvalues) const
+{
+	if (functions_p && functions_p->contains(name))
+		return functions_p->value(name)->evaluate(this, argnames, argvalues);
+	if (parent)
+		return parent->evaluate_function(name, argnames, argvalues);
+	PRINTA("WARNING: Ignoring unkown function '%1'.", name);
+	return Value();
+}
+
+AbstractNode *Context::evaluate_module(const ModuleInstantiation *inst) const
+{
+	if (modules_p && modules_p->contains(inst->modname))
+		return modules_p->value(inst->modname)->evaluate(this, inst);
+	if (parent)
+		return parent->evaluate_module(inst);
+	PRINTA("WARNING: Ignoring unkown module '%1'.", inst->modname);
+	return NULL;
+}
+