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engines/mediastation/mediascript/scriptvalue.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MEDIASTATION_MEDIASCRIPT_SCRIPTVALUE_H
+#define MEDIASTATION_MEDIASCRIPT_SCRIPTVALUE_H
+
+#include "common/ptr.h"
+#include "common/str.h"
+
+#include "mediastation/datafile.h"
+#include "mediastation/mediascript/scriptconstants.h"
+#include "mediastation/mediascript/collection.h"
+
+namespace MediaStation {
+
+class Actor;
+
+class ScriptValue {
+public:
+	ScriptValue() : _type(kScriptValueTypeEmpty) {}
+	ScriptValue(ParameterReadStream *stream);
+
+	ScriptValueType getType() const { return _type; }
+
+	void setToFloat(uint i);
+	void setToFloat(int i);
+	void setToFloat(double d);
+	double asFloat() const;
+	int asIntFromFloat() const;
+
+	void setToBool(bool b);
+	bool asBool() const;
+
+	void setToTime(double d);
+	double asTime() const;
+
+	void setToParamToken(uint paramToken);
+	uint asParamToken() const;
+
+	void setToActorId(uint actorId);
+	uint asActorId() const;
+
+	void setToString(const Common::String &string);
+	Common::String asString() const;
+
+	void setToCollection(Common::SharedPtr<Collection> collection);
+	Common::SharedPtr<Collection> asCollection() const;
+
+	void setToFunctionId(uint functionId);
+	uint asFunctionId() const;
+
+	void setToMethodId(BuiltInMethod methodId);
+	BuiltInMethod asMethodId() const;
+
+	Common::String getDebugString();
+
+	bool operator==(const ScriptValue &other) const;
+	bool operator!=(const ScriptValue &other) const;
+	bool operator<(const ScriptValue &other) const;
+	bool operator>(const ScriptValue &other) const;
+	bool operator<=(const ScriptValue &other) const;
+	bool operator>=(const ScriptValue &other) const;
+
+	bool operator||(const ScriptValue &other) const;
+	bool operator^(const ScriptValue &other) const;
+	bool operator&&(const ScriptValue &other) const;
+
+	ScriptValue operator+(const ScriptValue &other) const;
+	ScriptValue operator-(const ScriptValue &other) const;
+	ScriptValue operator*(const ScriptValue &other) const;
+	ScriptValue operator/(const ScriptValue &other) const;
+	ScriptValue operator%(const ScriptValue &other) const;
+	ScriptValue operator-() const;
+
+private:
+	ScriptValueType _type = kScriptValueTypeEmpty;
+	union {
+		double d = 0;
+		bool b;
+		uint paramToken;
+		uint actorId;
+		uint functionId;
+		BuiltInMethod methodId;
+	} _u;
+	Common::String _string;
+	Common::SharedPtr<Collection> _collection;
+
+	static bool compare(Opcode op, const ScriptValue &left, const ScriptValue &right);
+	static bool compareEmptyValues(Opcode op);
+	static bool compareStrings(Opcode op, const Common::String &left, const Common::String &right);
+	static bool compare(Opcode op, uint left, uint right);
+	static bool compare(Opcode op, bool left, bool right);
+	static bool compare(Opcode op, double left, double right);
+	static bool compare(Opcode op, Common::SharedPtr<Collection> left, Common::SharedPtr<Collection> right);
+
+	static ScriptValue evalMathOperation(Opcode op, const ScriptValue &left, const ScriptValue &right);
+	static double binaryMathOperation(Opcode op, double left, double right);
+
+	void issueValueMismatchWarning(ScriptValueType actualType) const;
+};
+
+} // End of namespace MediaStation
+
+#endif