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			74 lines
		
	
	
	
		
			2.1 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			74 lines
		
	
	
	
		
			2.1 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| #ifndef COMPILER_CONTROLPARSER_H_INCLUDED
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| #define COMPILER_CONTROLPARSER_H_INCLUDED
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| 
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| #include <vector>
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| 
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| #include <components/interpreter/types.hpp>
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| 
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| #include "parser.hpp"
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| #include "exprparser.hpp"
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| #include "lineparser.hpp"
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| 
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| namespace Compiler
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| {
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|     class Locals;
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|     class Literals;
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| 
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|     // Control structure parser
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| 
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|     class ControlParser : public Parser
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|     {
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|             enum State
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|             {
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|                 StartState,
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|                 IfEndState, IfBodyState,
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|                 IfElseifEndState, IfElseifBodyState,
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|                 IfElseEndState, IfElseBodyState,
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|                 IfEndifState,
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|                 WhileEndState, WhileBodyState,
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|                 WhileEndwhileState
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|             };
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| 
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|             typedef std::vector<Interpreter::Type_Code> Codes;
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|             typedef std::vector<std::pair<Codes, Codes> > IfCodes;
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| 
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|             Locals& mLocals;
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|             Literals& mLiterals;
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|             Codes mCode;
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|             Codes mCodeBlock;
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|             IfCodes mIfCode; // condition, body
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|             LineParser mLineParser;
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|             ExprParser mExprParser;
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|             State mState;
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| 
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|             bool parseIfBody (int keyword, const TokenLoc& loc, Scanner& scanner);
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| 
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|             bool parseWhileBody (int keyword, const TokenLoc& loc, Scanner& scanner);
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| 
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|         public:
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| 
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|             ControlParser (ErrorHandler& errorHandler, Context& context, Locals& locals,
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|                 Literals& literals);
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| 
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|             void appendCode (std::vector<Interpreter::Type_Code>& code) const;
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|             ///< store generated code in \æ code.
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| 
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|             virtual bool parseName (const std::string& name, const TokenLoc& loc,
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|                 Scanner& scanner);
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|             ///< Handle a name token.
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|             /// \return fetch another token?
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| 
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|             virtual bool parseKeyword (int keyword, const TokenLoc& loc, Scanner& scanner);
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|             ///< Handle a keyword token.
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|             /// \return fetch another token?
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| 
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|             virtual bool parseSpecial (int code, const TokenLoc& loc, Scanner& scanner);
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|             ///< Handle a special character token.
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|             /// \return fetch another token?
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| 
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|             void reset();
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|             ///< Reset parser to clean state.
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|     };
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| }
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| 
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| #endif
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