scanner.h

自己做的小编译程序,大家看看好不好用哦,是词法分析器

#ifndef SCANNER_H_INCLUDED
#define SCANNER_H_INCLUDED

#include "mylist.h"

#define MaxReserved 21

typedef enum 
{
	//簿记单词符号
	 ENDFILE,ERROR,
	
	//reservedWord
	PROGRAM,PROCEDURE,TYPE,VAR,
	IF,THEN,ELSE,FI,WHILE,DO,
	ENDWH,BEGIN,END,READ,WRITE,
	ARRAY,OF,RECORD,RETURN,
	
    //类型
    INTEGER, CHAR,

	ID, INTC, CHARC,
	
    //特殊符号
    ASSIGN,EQ,LT,PLUS,MINUS,TIMES,
	OVER,LPAREN,RPAREN,DOT,COLON,
	SEMI,COMMA,LMIDPAREN,RMIDPAREN,
	UNDERANGE
} LexType;


typedef enum 
{
	s0,s1,s2,s3,s4,s5,s6,send
}StateType; 


static struct
{
	char *str;
	LexType tok;
}ReservedWord[MaxReserved] = 
{
	{"program",PROGRAM},{"type",TYPE},{"var",VAR},
	{"procedure",PROCEDURE},{"begin",BEGIN},
	{"end",END},{"array",ARRAY},{"of",OF},
	{"record",RECORD},{"if",IF},{"then",THEN},
	{"else",ELSE},{"fi",FI},{"while",WHILE},
	{"do",DO},{"endwh",ENDWH},{"read",READ},
	{"write",WRITE},{"return",RETURN},
	{"integer",INTEGER},{"char",CHAR}
};

struct CToken
{
	int lineShow;
    LexType lex;
	string sem;
};

int getNextChar(FILE *f,char buffer[ ]);
void ungetNextChar(char buffer[]);
int reservedLookup(string & rs);
CToken getToken(FILE *f,char buffer[]);
CMyList<CToken>  getTokenList(FILE *f,char buffer[]);
CToken GetOneToken(FILE* f,char buffer[],int k);

#endif