util.h

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/* util.h
 * Utility functions for TINY compiler
 *
 * Compiler Construction: Principles and Practice
 * Kenneth C. Louden
 * 编译原理及实践
 * (美) Kenneth C. Louden 著
 * 冯博琴 冯岚 等译
 * 机械工业出版社 IBSN 7-111-07703-2
 * 源代码：zwf编辑并修订
 * Code Modify: 
 */
#ifndef _UTIL_H_
#define _UTIL_H_

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

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

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

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

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

#endif							/* _UTIL_H_ */