76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef MEDIASTATION_MEDIASCRIPT_CODECHUNK_H
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#define MEDIASTATION_MEDIASCRIPT_CODECHUNK_H
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#include "common/array.h"
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#include "mediastation/datafile.h"
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#include "mediastation/mediascript/scriptvalue.h"
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#include "mediastation/mediascript/scriptconstants.h"
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namespace MediaStation {
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class CodeChunk {
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public:
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CodeChunk(Chunk &chunk);
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~CodeChunk();
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ScriptValue executeNextBlock();
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ScriptValue execute(Common::Array<ScriptValue> *args = nullptr);
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private:
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void skipNextBlock();
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ScriptValue evaluateExpression();
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ScriptValue evaluateExpression(ExpressionType expressionType);
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ScriptValue evaluateOperation();
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ScriptValue evaluateValue();
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ScriptValue evaluateVariable();
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ScriptValue *readAndReturnVariable();
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void evaluateIf();
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void evaluateIfElse();
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ScriptValue evaluateAssign();
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ScriptValue evaluateBinaryOperation(Opcode op);
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ScriptValue evaluateUnaryOperation();
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ScriptValue evaluateFunctionCall(bool isIndirect = false);
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ScriptValue evaluateFunctionCall(uint functionId, uint paramCount);
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ScriptValue evaluateMethodCall(bool isIndirect = false);
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ScriptValue evaluateMethodCall(BuiltInMethod method, uint paramCount);
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void evaluateDeclareLocals();
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ScriptValue evaluateReturn();
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void evaluateReturnNoValue();
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void evaluateWhileLoop();
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static const uint MAX_LOOP_ITERATION_COUNT = 1000;
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bool _returnImmediately = false;
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Common::Array<ScriptValue> _locals;
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Common::Array<ScriptValue> *_args = nullptr;
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ParameterReadStream *_bytecode = nullptr;
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};
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} // End of namespace MediaStation
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#endif
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