Initial commit.

codemp/icarus/interpreter.h

@@ -0,0 +1,224 @@
+// Interpreter.h
+
+#ifndef __INTERPRETER__
+#define __INTERPRETER__
+
+#define ICARUS_VERSION	1.33
+
+#define MAX_STRING_SIZE	256
+#define	MAX_VAR_NAME	64
+
+typedef float	vector_t[3];
+
+//If you modify this, you MUST modify in g_ICARUScb.c as well.
+//Token defines
+enum 
+{
+	TK_BLOCK_START = TK_USERDEF,
+	TK_BLOCK_END,
+	TK_VECTOR_START,
+	TK_VECTOR_END,
+	TK_OPEN_PARENTHESIS,
+	TK_CLOSED_PARENTHESIS,
+	TK_VECTOR,
+	TK_GREATER_THAN,
+	TK_LESS_THAN,
+	TK_EQUALS,
+	TK_NOT,
+
+	NUM_USER_TOKENS
+};
+
+//ID defines
+enum
+{
+	ID_AFFECT = NUM_USER_TOKENS,
+	ID_SOUND,
+	ID_MOVE,
+	ID_ROTATE,
+	ID_WAIT,
+	ID_BLOCK_START,
+	ID_BLOCK_END,
+	ID_SET,
+	ID_LOOP,
+	ID_LOOPEND,
+	ID_PRINT,
+	ID_USE,
+	ID_FLUSH,
+	ID_RUN,
+	ID_KILL,
+	ID_REMOVE,
+	ID_CAMERA,
+	ID_GET,
+	ID_RANDOM,
+	ID_IF,
+	ID_ELSE,
+	ID_REM,
+	ID_TASK,
+	ID_DO,
+	ID_DECLARE,
+	ID_FREE,
+	ID_DOWAIT,
+	ID_SIGNAL,
+	ID_WAITSIGNAL,
+	ID_PLAY,
+
+	ID_TAG,
+	ID_EOF,
+	NUM_IDS
+};
+
+//Type defines
+enum
+{
+	//Wait types
+	TYPE_WAIT_COMPLETE	 = NUM_IDS,
+	TYPE_WAIT_TRIGGERED,
+
+	//Set types
+	TYPE_ANGLES,
+	TYPE_ORIGIN,
+
+	//Affect types
+	TYPE_INSERT,	
+	TYPE_FLUSH,	
+	
+	//Camera types
+	TYPE_PAN,
+	TYPE_ZOOM,
+	TYPE_MOVE,
+	TYPE_FADE,
+	TYPE_PATH,
+	TYPE_ENABLE,
+	TYPE_DISABLE,
+	TYPE_SHAKE,
+	TYPE_ROLL,
+	TYPE_TRACK,
+	TYPE_DISTANCE,
+	TYPE_FOLLOW,
+		
+	//Variable type
+	TYPE_VARIABLE,
+
+	TYPE_EOF,
+	NUM_TYPES
+};
+
+enum
+{
+	MSG_COMPLETED,
+	MSG_EOF,
+	NUM_MESSAGES,
+};
+
+#ifdef __cplusplus
+typedef struct variable_s
+{
+	char	name[MAX_VAR_NAME];
+	int		type;
+	void	*data;
+} variable_t;
+
+typedef map< string, variable_t * >	variable_m;
+typedef vector < variable_t * > variable_v;
+
+//CInterpreter
+
+class CInterpreter 
+{
+public:
+
+	CInterpreter();
+	~CInterpreter();
+
+	int Interpret( CTokenizer *, CBlockStream *, char *filename=NULL );	//Main interpretation function
+	
+	int Match( int );		//Looks ahead to the next token to try and match it to the passed token, consumes token on success
+	int LookAhead( int );	//Looks ahead without consuming on success
+
+	int FindSymbol( const char *,  keywordArray_t * );		//Searches the symbol table for the given name.  Returns the ID if found
+
+	int GetAffect( void );		//Handles the affect() function
+	int GetWait( void );		//Handles the wait() function
+	int GetSet( void );			//Handles the set() function
+	int GetBroadcast( void );	//Handles the broadcast() function
+	int GetLoop( void );		//Handles the loop() function
+	int GetPrint( void );		//Handles the print() function
+	int GetUse( void );			//Handles the use() function
+	int GetFlush( void );		//Handles the flush() function
+	int	GetRun( void );			//Handles the run() function
+	int	GetKill( void );		//Handles the kill() function
+	int	GetRemove( void );		//Handles the remove() function	
+	int GetCamera( void );		//Handles the camera() function
+	int GetIf( void );			//Handles the if() conditional statement
+	int GetSound( void );		//Handles the sound() function
+	int GetMove( void );		//Handles the move() function
+	int GetRotate( void );		//Handles the rotate() function
+	int GetRem( void );			//Handles the rem() function
+	int	GetTask( void );
+	int GetDo( void );
+	int GetElse( void );
+	int GetDeclare( void );
+	int GetFree( void );
+	int GetDoWait( void );
+	int GetSignal( void );
+	int GetWaitSignal( void );
+	int GetPlay( void );
+	
+	int GetRandom( CBlock *block );
+	int GetGet( CBlock *block );		//Heh
+	int	GetTag( CBlock *block );		//Handles the tag() identifier
+	int GetVector( CBlock *block );
+
+	int GetNextType( void );
+
+	int GetType( char *get );
+
+	int GetAny( CBlock *block );
+	int GetEvaluator( CBlock *block );
+	int GetString( CBlock *);			//Attempts to match and retrieve the value of a string token
+	int	GetIdentifier( CBlock *get );	//Attempts to match and retrieve the value of an identifier token
+	int	GetInteger( CBlock * );		//Attempts to match and retrieve the value of a int token
+	int GetFloat( CBlock * );		//Attempts to match and retrieve the value of a float token
+	int GetVariable( int type );
+
+	int GetID ( char * );	//Attempts to match and interpret an identifier
+	
+	keywordArray_t *GetSymbols( void )	{	return (keywordArray_t *) &m_symbolKeywords;	}	//Returns the interpreter's symbol table
+	keywordArray_t *GetIDs( void )		{	return (keywordArray_t *) &m_IDKeywords;		}	//Returns the interpreter's ID table
+	keywordArray_t *GetTypes( void )	{	return (keywordArray_t *) &m_typeKeywords;	}		//Returns the interpreter's type table
+
+protected:
+
+	void InitVars( void );
+	void FreeVars( void );
+	
+	variable_t *AddVar( const char *name, int type );
+	variable_t *FindVar( const char *name );
+
+	const char *GetTokenName( int );	//Returns the name of a token
+	int Error( char *, ... );			//Prints an error message
+	
+	int MatchTag( void );				//Attempts to match to a tag identifier
+	int MatchGet( void );				//Attempts to match to a get identifier
+	int	MatchRandom( void );			//Attempts to match to a random identifier
+
+	CTokenizer	*m_tokenizer;			//Pointer to the tokenizer
+	CBlockStream *m_blockStream;		//Pointer to the block stream
+
+	variable_v	m_vars;
+	variable_m	m_varMap;
+
+	string	m_sCurrentLine;				// used in IBIze error reporting for more clarity
+	string	m_sCurrentFile;				// full-pathed name of .TXT file (needed because of above, which affects parsestreams)
+	int		m_iCurrentLine;				// also needed now because of 'm_sCurrentLine'
+	int		m_iBadCBlockNumber;			// used for final app return code (NZ = err)
+
+	static keywordArray_t	m_symbolKeywords[];		//Symbols
+	static keywordArray_t	m_IDKeywords[];			//Identifiers
+	static keywordArray_t	m_typeKeywords[];			//Types
+	static keywordArray_t	m_conditionalKeywords[];	//Conditional
+};
+
+#endif __cplusplus
+#endif	//__INTERPRETER__