globals.h.bak

完成一个简化的C语言编译程序

#ifndef _GLOBALS_H_
#define _GLOBALS_H_
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef MAXTOKENLEN
#define MAXTOKENLEN 100
#endif
#define MAXRESERVED 7

#define FLOAT    111
#define INT      112
#define CHAR     113
#define VOID     114

#define ENDFILE   0
#define ERROR     444

#define IF       911
#define ELSE     912
#define WHILE    913
#define RETURN   914
#define BREAK    915

#define ID        1000
#define NUM       1001
#define FLOATNUM  1002
#define LETTER    1003
#define STRING    1004
#define CONSTCHAR 1005

#define ASSIGN   2000
#define EQ       2001
#define LT       2002
#define LE       2003
#define GT       2004
#define GE       2005
#define NE       2006

#define AND      2007
#define OR       2008
#define NOT      2009

#define PLUS     3000
#define MINUS    3001
#define TIMES    3002
#define OVER     3003

#define LPAREN   4004 
#define RPAREN   4005
#define LBRACKET 4006
#define RBRACKET 4007
#define LBC      4008
#define RBC      4009
#define SEMI     4010 
#define COMMA    4011


typedef int TokenType;

extern FILE* source;
extern FILE* listing;

extern int lineno;

/********************************************************/
/********Syntax tree for pasing**************************/
/********************************************************/

typedef enum {StmtK,ExpK,DeclK} NodeKind;
typedef enum {IfK,WhileK,DoWhileK,ReturnK,AssignK,ExpStmtK,CompoundK,InputK,OutputK,} StmtKind;
typedef enum {OpK,ConstK,IdK,ArrayK,CallK} ExpKind;
typedef enum {SingleVarK,ArrayVarK,FuncVar} DeclKind;

typedef enum {Void,Integer,Boolean,Char,Float} ExpType;

#define MAXCHILDREN 3

typedef struct TreeNode
 {
 struct TreeNode* child[MAXCHILDREN];
 struct TreeNode* sibling;
 int lineno;
 NodeKind nodekind;
 union {StmtKind stmt; ExpKind exp; DeclKind decl;} kind;
 union {TokenType op;
        int vali;
		float valf;
		char valc;
	    char* name;
 }  attr;
 ExpType type;
 int     array_size; /*just use for declkind*/
 int     layerno;    /*use for symbol table*/
 }  TreeNode;



/*********************************************************/
/****************** flgas for tracing ********************/
/*********************************************************/
extern int TraceScan;
extern int EchoSource;
extern int Traceparse;
extern int TraceAnalyze;
extern int TraceCode;
extern int Error;

#endif