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<!--NewPage--><html><head><!-- Generated by javadoc on Wed Oct 23 13:30:49 EST 1996 --><a name="_top_"></a><title> Class graph.ScanWord</title></head><body><pre><a href="packages.html">All Packages</a> <a href="tree.html">Class Hierarchy</a> <a href="Package-graph.html">This Package</a> <a href="graph.ScanString.html#_top_">Previous</a> <a href="graph.SpecialFunction.html#_top_">Next</a> <a href="AllNames.html">Index</a></pre><hr><h1> Class graph.ScanWord</h1><pre><a href="java.lang.Object.html#_top_">java.lang.Object</a> | +----<a href="java.io.StreamTokenizer.html#_top_">java.io.StreamTokenizer</a> | +----graph.ScanWord</pre><hr><dl> <dt> public class <b>ScanWord</b> <dt> extends <a href="java.io.StreamTokenizer.html#_top_">StreamTokenizer</a></dl>This class extends the StreamTokenizer class. It allows wordsto be defined and recognised and returned as a token. The TT_NUMBERtoken of the StreamTokenizer is also modified so that scientific notationis recognised.<dl> <dt> <b>Version:</b> <dd> 1.5, 1996/07/24 00:19:41 <dt> <b>Author:</b> <dd> Leigh Brookshaw</dl><hr><a name="index"></a><h2> <img src="images/variable-index.gif" width=207 height=38 alt="Variable Index"></h2><dl> <dt> <img src="images/blue-ball-small.gif" width=6 height=6 alt=" o "> <a href="#ERROR"><b>ERROR</b></a> <dd> Token returned when an error is encountered <dt> <img src="images/blue-ball-small.gif" width=6 height=6 alt=" o "> <a href="#STRING"><b>STRING</b></a> <dd> Token returned when a string has been found. <dt> <img src="images/blue-ball-small.gif" width=6 height=6 alt=" o "> <a href="#UNKNOWN"><b>UNKNOWN</b></a> <dd> Token returned when an unknown characters match nothing</dl><h2> <img src="images/constructor-index.gif" width=275 height=38 alt="Constructor Index"></h2><dl> <dt> <img src="images/yellow-ball-small.gif" width=6 height=6 alt=" o "> <a href="#ScanWord(java.io.InputStream)"><b>ScanWord</b></a>(InputStream) <dd> Instantiate the class with the parsed input stream.</dl><h2> <img src="images/method-index.gif" width=207 height=38 alt="Method Index"></h2><dl> <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o "> <a href="#addKeyWord(java.lang.String, int)"><b>addKeyWord</b></a>(String, int) <dd> Add a keyword/token pair. <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o "> <a href="#closeStream()"><b>closeStream</b></a>() <dd> Close the input stream <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o "> <a href="#getKeyValue(java.lang.String)"><b>getKeyValue</b></a>(String) <dd> return the matching token given the keyword <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o "> <a href="#getNumber(java.lang.String)"><b>getNumber</b></a>(String) <dd> Check to see if the returned word is a number The native StreamTokenizer number method does not work for scientific notation so we us the Double class doubleValue() method <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o "> <a href="#nextWord()"><b>nextWord</b></a>() <dd> Read the input stream and return the next token found. <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o "> <a href="#resetKeyWords()"><b>resetKeyWords</b></a>() <dd> Clear the internal table containing the keyword/token pairs <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o "> <a href="#resetWordSyntax()"><b>resetWordSyntax</b></a>() <dd> Reset the syntax of the parent class <dt> <img src="images/red-ball-small.gif" width=6 height=6 alt=" o "> <a href="#setStringChar(char)"><b>setStringChar</b></a>(char) <dd> Set the character that delimeters a string.</dl><a name="variables"></a><h2> <img src="images/variables.gif" width=153 height=38 alt="Variables"></h2><a name="UNKNOWN"><img src="images/blue-ball.gif" width=12 height=12 alt=" o "></a><b>UNKNOWN</b><pre> public final static int UNKNOWN</pre><dl> <dd> Token returned when an unknown characters match nothing</dl><a name="ERROR"><img src="images/blue-ball.gif" width=12 height=12 alt=" o "></a><b>ERROR</b><pre> public final static int ERROR</pre><dl> <dd> Token returned when an error is encountered</dl><a name="STRING"><img src="images/blue-ball.gif" width=12 height=12 alt=" o "></a><b>STRING</b><pre> public final static int STRING</pre><dl> <dd> Token returned when a string has been found. A string is defined to betext between matching quotes " ".</dl><a name="constructors"></a><h2> <img src="images/constructors.gif" width=231 height=38 alt="Constructors"></h2><a name="ScanWord"></a><a name="ScanWord(java.io.InputStream)"><img src="images/yellow-ball.gif" width=12 height=12 alt=" o "></a><b>ScanWord</b><pre> public ScanWord(<a href="java.io.InputStream.html#_top_">InputStream</a> in)</pre><dl> <dd> Instantiate the class with the parsed input stream. <dl> <dt> <b>Parameters:</b> <dd> in - Input stream to read from </dl></dl><a name="methods"></a><h2> <img src="images/methods.gif" width=151 height=38 alt="Methods"></h2><a name="addKeyWord(java.lang.String, int)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a><a name="addKeyWord"><b>addKeyWord</b></a><pre> public void addKeyWord(<a href="java.lang.String.html#_top_">String</a> s, int i)</pre><dl> <dd> Add a keyword/token pair. <dl> <dt> <b>Parameters:</b> <dd> s - String contining the keyword <dd> i - Token to return when the keyword is encountered. </dl></dl><a name="getKeyValue(java.lang.String)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a><a name="getKeyValue"><b>getKeyValue</b></a><pre> public int getKeyValue(<a href="java.lang.String.html#_top_">String</a> s)</pre><dl> <dd> return the matching token given the keyword <dl> <dt> <b>Parameters:</b> <dd> s - Keyword. </dl></dl><a name="resetKeyWords()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a><a name="resetKeyWords"><b>resetKeyWords</b></a><pre> public void resetKeyWords()</pre><dl> <dd> Clear the internal table containing the keyword/token pairs</dl><a name="nextWord()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a><a name="nextWord"><b>nextWord</b></a><pre> public int nextWord()</pre><dl> <dd> Read the input stream and return the next token found.</dl><a name="setStringChar(char)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a><a name="setStringChar"><b>setStringChar</b></a><pre> public void setStringChar(char c)</pre><dl> <dd> Set the character that delimeters a string. <dl> <dt> <b>Parameters:</b> <dd> c - character to delimeter strings. Default is ". </dl></dl><a name="getNumber(java.lang.String)"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a><a name="getNumber"><b>getNumber</b></a><pre> protected int getNumber(<a href="java.lang.String.html#_top_">String</a> s)</pre><dl> <dd> Check to see if the returned word is a number The native StreamTokenizer number method does not work for scientific notation so we us the Double class doubleValue() method <dl> <dt> <b>Parameters:</b> <dd> s - String to find number. </dl></dl><a name="resetWordSyntax()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a><a name="resetWordSyntax"><b>resetWordSyntax</b></a><pre> protected void resetWordSyntax()</pre><dl> <dd> Reset the syntax of the parent class</dl><a name="closeStream()"><img src="images/red-ball.gif" width=12 height=12 alt=" o "></a><a name="closeStream"><b>closeStream</b></a><pre> protected void closeStream()</pre><dl> <dd> Close the input stream</dl><hr><pre><a href="packages.html">All Packages</a> <a href="tree.html">Class Hierarchy</a> <a href="Package-graph.html">This Package</a> <a href="graph.ScanString.html#_top_">Previous</a> <a href="graph.SpecialFunction.html#_top_">Next</a> <a href="AllNames.html">Index</a></pre></body></html>⌨️ 快捷键说明
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