/*
?*?To?change?this?template?choose?Tools?|?Templates
?*?and?open?the?template?in?the?editor.
?*/

/**
?*?
?*?@author?Administrator
?*/
public?class?Lexicon?{

	private?char[]?code;//?存儲字符串
	private?String[]?keywords?=?{“if“?“else“?“for“?“while“?“do“?“return“?“int“?“double“?“float“?“char“?“string“?“true“?“false“};//關鍵字
	private?char[]?operator1?=?{‘=‘?‘+‘?‘-‘?‘*‘?‘/‘?‘<‘?‘>‘?‘=‘?‘‘?‘{‘?‘}‘?‘（‘?‘）‘};
	private?String[]?operator2?=?{“!=“?“>=“?“<=“?“==“};
	private?char[]?escaped?=?{‘\‘‘?‘\“‘?‘\\‘?‘b‘?‘t‘?‘n‘?‘f‘?‘r‘?‘0‘};//轉義字符
	SymbolTable?table?=?new?SymbolTable（）;//?符號表
	private?String?errorInfo?=?““;//錯誤信息

	public?Lexicon（char[]?code）?{
		this.code?=?code;
		analysis（）;
	}

	//?分析字符串
	public?boolean?analysis（）?{
		int?i?=?0;
		while?（i?			if?（code[i]?==?‘?‘?||?code[i]?==?‘\n‘）?{
				i++;
				continue;
			}
			if（（i+1				while（code[i]?!=?‘\n‘）?{
					i++;
				}
				System.out.println（“注釋被忽略“）;
				continue;
			}
			if（code[i]?==?‘;‘）?{
				table.addSymbol（“tail“?“;“）;
			}
			if?（isDigit（code[i]））?{//?判斷數字
				String?num?=?““;
				boolean?isDecimal?=?false;
				boolean?error?=?false;
				while?（isDigit（code[i]））?{
					num?+=?code[i];
					i++;
					while（isLetter（code[i]））?{//如果是以數字開頭的標識符，則出錯
						error?=?true;
						num?+=?code[i];
						i++;
					}
					if（code[i]?==?‘.‘）?{
						num?+=?‘.‘;
						i++;
						if（!isDigit（code[i]））?{
							errorInfo?+=?num?+?“附近出現錯誤，小數點后應該有數字\n“;
							return?false;
						}
						isDecimal?=?true;
					}
				}
				if（error）?{
					errorInfo?+=?num?+?“附近出現錯誤，標識符不能以數字開頭\n“;
					return?false;
				}
				else?if（isDecimal）?{
					table.addSymbol（“decimal“?num）;
				}
				else?{
					table.addSymbol（“integer“?num）;
				}
				continue;
			}
			if（isLetter（code[i]））?{//判斷標識符
				String?identifier?=?““?+?code[i];
				i++;
				while（isLetter（code[i]）?||?isDigit（code[i]））?{
					identifier?+=?code[i];
					i++;
				}
				if（!isKeyword（identifier））?{
					table.addSymbol（“identifier“?identifier）;
				}
				else?{
					table.addSymbol（“keyword“?identifier）;
				}
				continue;
			}
			if（i+1				int?checkOperator?=?checkOperator（code[i]?code[i+1]）;
				if（checkOperator?==?2）?{
					table.addSymbol（“operator“?““+code[i]+code[i+1]）;
					i?+=?2;
					continue;
				}
				if（checkOperator?==?1）?{
					table.addSymbol（“operator“?““+code[i]）;
					i++;				
					continue;
				}
			}
			if（code[i]?==?‘\‘‘）?{//判斷字符常數
				if（i+2?					if（code[i+1]?==?‘\\‘）?{
						if（i+3?							if（isEscaped（code[i+2]）?&&?code[i+3]?==?‘\‘‘）?{
								table.addSymbol（“character“?““+code[i+1]+code[i+2]）;
								i?+=?4;
								continue;
							}
							else?{
								errorInfo?+=?““?+?code[i]?+?code[i+1]?+?code[i+2]?+?“附近有錯誤，字符未閉合或使用了不正確的轉義字符\n“;
								return?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2012-12-15?17:23??lab3\
?????文件?????????232??2012-11-25?14:43??lab3\.classpath
?????文件?????????379??2012-11-27?19:47??lab3\.project
?????目錄???????????0??2012-12-18?10:31??lab3\bin\
?????文件?????????801??2012-12-18?10:31??lab3\bin\ActionDetail.class
?????文件????????5184??2012-12-18?10:31??lab3\bin\Lexicon.class
?????文件????????5610??2012-11-25?14:43??lab3\bin\Lexiconframe.form
?????文件????????5390??2012-12-18?10:31??lab3\bin\Parsing.class
?????文件?????????711??2012-12-18?10:31??lab3\bin\Parsingframe$1.class
?????文件?????????711??2012-12-18?10:31??lab3\bin\Parsingframe$2.class
?????文件?????????522??2012-12-18?10:31??lab3\bin\Parsingframe$3.class
?????文件????????8125??2012-12-18?10:31??lab3\bin\Parsingframe.class
?????文件????????2800??2012-12-18?10:31??lab3\bin\ParsingSem.class
?????文件????????1451??2012-12-18?10:31??lab3\bin\ParsingSeq.class
?????文件?????????342??2012-12-18?10:31??lab3\bin\Quadruple.class
?????文件????????1782??2012-12-18?10:31??lab3\bin\SymbolTable.class
?????文件????????3710??2012-11-25?14:32??lab3\build.xml
?????文件??????????85??2012-11-25?14:32??lab3\manifest.mf
?????目錄???????????0??2012-12-15?17:23??lab3\nbproject\
?????文件???????78019??2012-11-25?14:32??lab3\nbproject\build-impl.xml
?????文件?????????475??2012-11-25?14:32??lab3\nbproject\genfiles.properties
?????目錄???????????0??2012-12-15?17:23??lab3\nbproject\private\
?????文件?????????139??2012-11-25?14:32??lab3\nbproject\private\private.properties
?????文件?????????230??2012-11-25?14:43??lab3\nbproject\private\private.xml
?????文件????????2315??2012-11-25?14:32??lab3\nbproject\project.properties
?????文件?????????513??2012-11-25?14:32??lab3\nbproject\project.xml
?????目錄???????????0??2012-12-15?18:35??lab3\src\
?????文件????????5524??2012-12-02?14:26??lab3\src\Lexicon.java
?????文件????????5610??2012-11-25?14:43??lab3\src\Lexiconframe.form
?????文件????????6607??2012-12-15?19:26??lab3\src\Parsing.java
?????文件????????8940??2012-12-16?15:32??lab3\src\Parsingframe.java
............此處省略3個文件信息