121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
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//-----------------------------------------------------------------------------
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//
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// $Logfile:: /Code/DLLs/game/lexer.h $
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// $Revision:: 4 $
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// $Date:: 10/13/03 8:54a $
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//
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// Copyright (C) 1999 by Ritual Entertainment, Inc.
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// All rights reserved.
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//
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// This source is may not be distributed and/or modified without
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// expressly written permission by Ritual Entertainment, Inc.
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//
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//
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//
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// DESCRIPTION:
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//
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#ifndef __LEXER_H__
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#define __LEXER_H__
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#include "program.h"
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#define MAX_FRAMES 256
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extern int type_size[ 6 ];
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extern type_t type_void;
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extern type_t type_string;
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extern type_t type_float;
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extern type_t type_vector;
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extern type_t type_entity;
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extern type_t type_function;
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extern def_t def_void;
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extern def_t def_string;
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extern def_t def_float;
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extern def_t def_vector;
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extern def_t def_entity;
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extern def_t def_function;
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extern def_t def_ret;
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extern def_t junkdef;
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typedef enum
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{
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tt_eof, // end of file reached
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tt_name, // an alphanumeric name token
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tt_punct, // code punctuation
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tt_immediate, // string, float, vector
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tt_preprocessor // #-prefixed command
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} token_type_t;
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class Lexer
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{
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private:
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int source_line;
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const char *pr_file_p;
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const char *pr_line_start; // start of current source line
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int pr_bracelevel;
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char pr_token[ 2048 ];
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public:
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token_type_t pr_token_type;
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type_t *pr_immediate_type;
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eval_t pr_immediate;
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char pr_immediate_string[ 2048 ];
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Program &program;
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Lexer( Program &prg );
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void NewLine( void );
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void LexString( void );
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float LexNumber( void );
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void LexVector( void );
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void LexEntity( void );
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void LexName( void );
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void LexPunctuation( void );
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void LexWhitespace( void );
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void LexPreprocessor( void );
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void Lex( void );
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void ParseError( const char *error, ... );
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void Expect( char *string );
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bool Check( const char *string );
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char *ParseName( void );
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void SkipOutOfFunction( void );
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void SkipToSemicolon( void );
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type_t *CheckType( void );
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type_t *ParseType( void );
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int SourceLine( void );
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void SetSource( const char *text );
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};
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inline int Lexer::SourceLine
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(
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void
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)
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{
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return source_line;
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}
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inline void Lexer::SetSource
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(
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const char *text
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)
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{
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pr_file_p = text;
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source_line = 0;
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NewLine();
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}
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#endif
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