c词法分析程序（java实现）原代码5

最新推荐文章于 2023-06-19 20:26:31 发布

最新推荐文章于 2023-06-19 20:26:31 发布 · 197 阅读

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#C #C++ #C# #Java

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本文介绍了一个简单的符号识别类，用于识别编程语言中的运算符、单字符符号及界限限定符。通过几个公共方法实现对输入字符串的检查，判断其是否属于预定义的符号类别。

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package wordanalyse;

public class Symbol {
private static final String[] Symbol={"!","++","--","&","~",
  "*","/","%","+","-","<<",">>","<","<=",">",">=","==","!=","&&","||",
        "=","+=","-=","*=","/=","#","->","."};/*所有组合的运算符*/
private static final String[] singleSymble={"!","&","~","*","/","%","+","-","<",">","=","#"};/*运算符所包含的字符*/
private static final String[] limitedSymble={"(",")","[","]",",",";","{","}","'","\""};/*界限限定符*/
public static boolean isCalSymbol(String checkdSymbol)
{
  for(int i=0;i    if(Symbol[i].equals(checkdSymbol))
    return true;
  return false;
}
public static boolean isSingleSymble(String checkdSymbol)
{
  for(int i=0;i    if(singleSymble[i].equals(checkdSymbol))
    return true;
  return false;
}
public static boolean isLimitedSymble(String checkdSymbol)
{
  for(int i=0;i    if(limitedSymble[i].equals(checkdSymbol))
    return true;
  return false;
}
}