Merge branch 'master' into stable

1 files changed, 69 insertions, 0 deletions

diff --git a/Source/Core/InputCommon/ControllerInterface/ExpressionParser.h b/Source/Core/InputCommon/ControllerInterface/ExpressionParser.h
new file mode 100644
index 0000000000..9575ff619d
--- /dev/null
+++ b/Source/Core/InputCommon/ControllerInterface/ExpressionParser.h
@@ -0,0 +1,69 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+#include "InputCommon/ControllerInterface/Device.h"
+
+namespace ciface
+{
+namespace ExpressionParser
+{
+
+class ControlQualifier
+{
+public:
+	bool has_device;
+	Core::DeviceQualifier device_qualifier;
+	std::string control_name;
+
+	ControlQualifier() : has_device(false) {}
+
+	operator std::string()
+	{
+		if (has_device)
+			return device_qualifier.ToString() + ":" + control_name;
+		else
+			return control_name;
+	}
+};
+
+class ControlFinder
+{
+public:
+	ControlFinder(const Core::DeviceContainer &container_, const Core::DeviceQualifier &default_, const bool is_input_) : container(container_), default_device(default_), is_input(is_input_) {}
+	Core::Device::Control *FindControl(ControlQualifier qualifier);
+
+private:
+	Core::Device *FindDevice(ControlQualifier qualifier);
+	const Core::DeviceContainer &container;
+	const Core::DeviceQualifier &default_device;
+	bool is_input;
+};
+
+class ExpressionNode;
+class Expression
+{
+public:
+	Expression() : node(nullptr) {}
+	Expression(ExpressionNode *node);
+	~Expression();
+	ControlState GetValue();
+	void SetValue (ControlState state);
+	int num_controls;
+	ExpressionNode *node;
+};
+
+enum ExpressionParseStatus
+{
+	EXPRESSION_PARSE_SUCCESS = 0,
+	EXPRESSION_PARSE_SYNTAX_ERROR,
+	EXPRESSION_PARSE_NO_DEVICE,
+};
+
+ExpressionParseStatus ParseExpression(const std::string& expr, ControlFinder &finder, Expression **expr_out);
+
+}
+}