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Tokenizer
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SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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mars.assembler</FONT>
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Class Tokenizer</H2>
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<PRE>
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<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
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<IMG SRC="../../resources/inherit.gif" ALT="extended by "><B>mars.assembler.Tokenizer</B>
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</PRE>
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<DL>
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<DT><PRE>public class <B>Tokenizer</B><DT>extends <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
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</PRE>
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<P>
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A tokenizer is capable of tokenizing a complete MIPS program, or a given line from
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a MIPS program. Since MIPS is line-oriented, each line defines a complete statement.
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Tokenizing is the process of analyzing the input MIPS program for the purpose of
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recognizing each MIPS language element. The types of language elements are known as "tokens".
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MIPS tokens are defined in the TokenTypes class.<br><br>
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Example: <br>
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The MIPS statement <tt>here: lw $t3, 8($t4) #load third member of array</tt><br>
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generates the following token list<br>
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IDENTIFIER, COLON, OPERATOR, REGISTER_NAME, COMMA, INTEGER_5, LEFT_PAREN,
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REGISTER_NAME, RIGHT_PAREN, COMMENT<br>
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<P>
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<P>
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<DL>
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<DT><B>Author:</B></DT>
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<DD>Pete Sanderson</DD>
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</DL>
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<HR>
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<P>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<A NAME="constructor_summary"><!-- --></A>
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<B>Constructor Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../mars/assembler/Tokenizer.html#Tokenizer()">Tokenizer</A></B>()</CODE>
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<BR>
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Simple constructor.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../mars/assembler/Tokenizer.html#Tokenizer(mars.MIPSprogram)">Tokenizer</A></B>(<A HREF="../../mars/MIPSprogram.html" title="class in mars">MIPSprogram</A> program)</CODE>
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<BR>
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Constructor for use with existing MIPSprogram.</TD>
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</TR>
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</TABLE>
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<!-- ========== METHOD SUMMARY =========== -->
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<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
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<B>Method Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../mars/ErrorList.html" title="class in mars">ErrorList</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../mars/assembler/Tokenizer.html#getErrors()">getErrors</A></B>()</CODE>
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<BR>
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Fetch this Tokenizer's error list.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../mars/assembler/Tokenizer.html#tokenize(mars.MIPSprogram)">tokenize</A></B>(<A HREF="../../mars/MIPSprogram.html" title="class in mars">MIPSprogram</A> p)</CODE>
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<BR>
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Will tokenize a complete MIPS program.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../mars/assembler/Tokenizer.html#tokenizeExampleInstruction(java.lang.String)">tokenizeExampleInstruction</A></B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> example)</CODE>
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<BR>
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Used only to create a token list for the example provided with each instruction
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specification.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../mars/assembler/Tokenizer.html#tokenizeLine(int, java.lang.String)">tokenizeLine</A></B>(int lineNum,
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<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> theLine)</CODE>
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<BR>
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Will tokenize one line of source code.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../mars/assembler/Tokenizer.html#tokenizeLine(int, java.lang.String, mars.ErrorList)">tokenizeLine</A></B>(int lineNum,
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<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> theLine,
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<A HREF="../../mars/ErrorList.html" title="class in mars">ErrorList</A> callerErrorList)</CODE>
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<BR>
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Will tokenize one line of source code.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../mars/assembler/Tokenizer.html#tokenizeLine(int, java.lang.String, mars.ErrorList, boolean)">tokenizeLine</A></B>(int lineNum,
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<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> theLine,
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<A HREF="../../mars/ErrorList.html" title="class in mars">ErrorList</A> callerErrorList,
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boolean doEqvSubstitutes)</CODE>
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<BR>
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Will tokenize one line of source code.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../mars/assembler/Tokenizer.html#tokenizeLine(mars.MIPSprogram, int, java.lang.String, boolean)">tokenizeLine</A></B>(<A HREF="../../mars/MIPSprogram.html" title="class in mars">MIPSprogram</A> program,
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int lineNum,
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<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> theLine,
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boolean doEqvSubstitutes)</CODE>
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<BR>
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Will tokenize one line of source code.</TD>
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</TR>
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</TABLE>
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<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
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<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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</TR>
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</TABLE>
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<P>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="constructor_detail"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Constructor Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="Tokenizer()"><!-- --></A><H3>
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Tokenizer</H3>
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<PRE>
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public <B>Tokenizer</B>()</PRE>
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<DL>
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<DD>Simple constructor. Initializes empty error list.
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<P>
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</DL>
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<HR>
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<A NAME="Tokenizer(mars.MIPSprogram)"><!-- --></A><H3>
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Tokenizer</H3>
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<PRE>
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public <B>Tokenizer</B>(<A HREF="../../mars/MIPSprogram.html" title="class in mars">MIPSprogram</A> program)</PRE>
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<DL>
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<DD>Constructor for use with existing MIPSprogram. Designed to be used with Macro feature.
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<P>
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<DL>
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<DT><B>Parameters:</B><DD><CODE>program</CODE> - A previously-existing MIPSprogram object or null if none.</DL>
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</DL>
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<!-- ============ METHOD DETAIL ========== -->
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<A NAME="method_detail"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Method Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="tokenize(mars.MIPSprogram)"><!-- --></A><H3>
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tokenize</H3>
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<PRE>
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public <A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</A> <B>tokenize</B>(<A HREF="../../mars/MIPSprogram.html" title="class in mars">MIPSprogram</A> p)
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throws <A HREF="../../mars/ProcessingException.html" title="class in mars">ProcessingException</A></PRE>
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<DL>
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<DD>Will tokenize a complete MIPS program. MIPS is line oriented (not free format),
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so we will be line-oriented too.
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<P>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>p</CODE> - The MIPSprogram to be tokenized.
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<DT><B>Returns:</B><DD>An ArrayList representing the tokenized program. Each list member is a TokenList
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that represents a tokenized source statement from the MIPS program.
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<DT><B>Throws:</B>
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<DD><CODE><A HREF="../../mars/ProcessingException.html" title="class in mars">ProcessingException</A></CODE></DL>
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</DD>
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</DL>
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<HR>
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<A NAME="tokenizeExampleInstruction(java.lang.String)"><!-- --></A><H3>
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tokenizeExampleInstruction</H3>
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<PRE>
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public <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A> <B>tokenizeExampleInstruction</B>(<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> example)
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throws <A HREF="../../mars/ProcessingException.html" title="class in mars">ProcessingException</A></PRE>
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<DL>
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<DD>Used only to create a token list for the example provided with each instruction
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specification.
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<P>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>example</CODE> - The example MIPS instruction to be tokenized.
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<DT><B>Returns:</B><DD>An TokenList representing the tokenized instruction. Each list member is a Token
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that represents one language element.
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<DT><B>Throws:</B>
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<DD><CODE><A HREF="../../mars/ProcessingException.html" title="class in mars">ProcessingException</A></CODE> - This occurs only if the instruction specification itself
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contains one or more lexical (i.e. token) errors.</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="tokenizeLine(int, java.lang.String)"><!-- --></A><H3>
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tokenizeLine</H3>
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<PRE>
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public <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A> <B>tokenizeLine</B>(int lineNum,
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<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> theLine)</PRE>
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<DL>
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<DD>Will tokenize one line of source code. If lexical errors are discovered,
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they are noted in an ErrorMessage object which is added to the ErrorList.
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Will NOT throw an exception yet because we want to persevere beyond first error.
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<P>
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<DD><DL>
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<DT><B>Parameters:</B><DD><CODE>lineNum</CODE> - line number from source code (used in error message)<DD><CODE>theLine</CODE> - String containing source code
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<DT><B>Returns:</B><DD>the generated token list for that line</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="tokenizeLine(int, java.lang.String, mars.ErrorList)"><!-- --></A><H3>
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tokenizeLine</H3>
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<PRE>
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public <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A> <B>tokenizeLine</B>(int lineNum,
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<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> theLine,
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<A HREF="../../mars/ErrorList.html" title="class in mars">ErrorList</A> callerErrorList)</PRE>
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<DL>
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<DD>Will tokenize one line of source code. If lexical errors are discovered,
|
|
they are noted in an ErrorMessage object which is added to the provided ErrorList
|
|
instead of the Tokenizer's error list. Will NOT throw an exception.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>lineNum</CODE> - line number from source code (used in error message)<DD><CODE>theLine</CODE> - String containing source code<DD><CODE>callerErrorList</CODE> - errors will go into this list instead of tokenizer's list.
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<DT><B>Returns:</B><DD>the generated token list for that line</DL>
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</DD>
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</DL>
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<HR>
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|
|
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<A NAME="tokenizeLine(int, java.lang.String, mars.ErrorList, boolean)"><!-- --></A><H3>
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|
tokenizeLine</H3>
|
|
<PRE>
|
|
public <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A> <B>tokenizeLine</B>(int lineNum,
|
|
<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> theLine,
|
|
<A HREF="../../mars/ErrorList.html" title="class in mars">ErrorList</A> callerErrorList,
|
|
boolean doEqvSubstitutes)</PRE>
|
|
<DL>
|
|
<DD>Will tokenize one line of source code. If lexical errors are discovered,
|
|
they are noted in an ErrorMessage object which is added to the provided ErrorList
|
|
instead of the Tokenizer's error list. Will NOT throw an exception.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>lineNum</CODE> - line number from source code (used in error message)<DD><CODE>theLine</CODE> - String containing source code<DD><CODE>callerErrorList</CODE> - errors will go into this list instead of tokenizer's list.<DD><CODE>doEqvSubstitutse</CODE> - boolean param set true to perform .eqv substitutions, else false
|
|
<DT><B>Returns:</B><DD>the generated token list for that line</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="tokenizeLine(mars.MIPSprogram, int, java.lang.String, boolean)"><!-- --></A><H3>
|
|
tokenizeLine</H3>
|
|
<PRE>
|
|
public <A HREF="../../mars/assembler/TokenList.html" title="class in mars.assembler">TokenList</A> <B>tokenizeLine</B>(<A HREF="../../mars/MIPSprogram.html" title="class in mars">MIPSprogram</A> program,
|
|
int lineNum,
|
|
<A HREF="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> theLine,
|
|
boolean doEqvSubstitutes)</PRE>
|
|
<DL>
|
|
<DD>Will tokenize one line of source code. If lexical errors are discovered,
|
|
they are noted in an ErrorMessage object which is added to the provided ErrorList
|
|
instead of the Tokenizer's error list. Will NOT throw an exception.
|
|
<P>
|
|
<DD><DL>
|
|
<DT><B>Parameters:</B><DD><CODE>program</CODE> - MIPSprogram containing this line of source<DD><CODE>lineNum</CODE> - line number from source code (used in error message)<DD><CODE>theLine</CODE> - String containing source code<DD><CODE>doEqvSubstitutes</CODE> - boolean param set true to perform .eqv substitutions, else false
|
|
<DT><B>Returns:</B><DD>the generated token list for that line</DL>
|
|
</DD>
|
|
</DL>
|
|
<HR>
|
|
|
|
<A NAME="getErrors()"><!-- --></A><H3>
|
|
getErrors</H3>
|
|
<PRE>
|
|
public <A HREF="../../mars/ErrorList.html" title="class in mars">ErrorList</A> <B>getErrors</B>()</PRE>
|
|
<DL>
|
|
<DD>Fetch this Tokenizer's error list.
|
|
<P>
|
|
<DD><DL>
|
|
|
|
<DT><B>Returns:</B><DD>the error list</DL>
|
|
</DD>
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</DL>
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