util.h

一个用c++编译的词法分析器

/****************************************************/
/* File: util.h 									*/
/* Utility functions for the TINY compiler  		*/
/* Compiler Construction: Principles and Practice   */
/* Kenneth C. Louden								*/
/****************************************************/

#ifndef _UTIL_H_
#define _UTIL_H_

/* Procedure printToken prints a token 
 * and its lexeme to the listing file
 */
void printToken(TokenType, const char*);

/* Function newStmtNode creates a new statement
 * node for syntax tree construction
 */
TreeNode* newStmtNode(StmtKind);

/* Function newExpNode creates a new expression 
 * node for syntax tree construction
 */
TreeNode* newExpNode(ExpKind);

/* Function copyString allocates and makes a new
 * copy of an existing string
 */
char* copyString(char*);

/* procedure printTree prints a syntax tree to the 
 * listing file using indentation to indicate subtrees
 */
void printTree(TreeNode*);

#endif