Changed how we deal w/ StringLiterals across multiple lines

src/main/cup/chocopy/pa1/ChocoPy.cup

@@ -145,8 +145,8 @@ action code {:
 terminal NEWLINE;
 terminal String PLUS; 
 terminal String MINUS;
-terminal String MULTIPLY;
-terminal String DIVIDE;
+terminal String MUL;
+terminal String DIV;
 terminal String NAMES;
 
 terminal Integer NUMBER; 

src/main/jflex/chocopy/pa1/ChocoPy.jflex

@@ -8,7 +8,7 @@ import java.util.ArrayList;
 %unicode
 %line
 %column
-%states AFTER
+%states AFTER, STR
 %class ChocoPyLexer
 %public
 
@@ -33,6 +33,7 @@ import java.util.ArrayList;
     /** Producer of token-related values for the parser. */
     final ComplexSymbolFactory symbolFactory = new ComplexSymbolFactory();
     private int currIndent = 0;
+    private int currString = "";
     private ArrayList<Integer> stack = new ArrayList<Integer>(20);
     /** Return a terminal symbol of syntactic category TYPE and no
      *  semantic value at the current source location. */
@@ -67,7 +68,7 @@ WhiteSpace = [ \t]
 LineBreak  = \r|\n|\r\n
 
 IntegerLiteral = 0|[1-9][0-9]*
-StringLiteral = \"([^\"\\]|(\\\")|(\\t)|(\\r)|(\\n)|(\\\\))*\"
+StringLiteral = ([^\"\\]|(\\\")|(\\t)|(\\r)|(\\n)|(\\\\))*
 Names = (_|[a-z]|[A-Z])(_|[a-z]|[A-Z])*
 Comments = #[^\r\n]*
 %%
@@ -112,7 +113,8 @@ Comments = #[^\r\n]*
   /* Literals. */
   {IntegerLiteral}            { return symbol(ChocoPyTokens.NUMBER,
                                                  Integer.parseInt(yytext())); }
-  {StringLiteral}             { return symbol(ChocoPyTokens.STRING, yytext());}
+//  {StringLiteral}             { return symbol(ChocoPyTokens.STRING, yytext());}
+  "\""                           {yystart(STR); currString = "";} 
   "False"                        { return symbol(ChocoPyTokens.BOOL, false); }
   "True"                         { return symbol(ChocoPyTokens.BOOL, true); }
   "None"                         { return symbol(ChocoPyTokens.NONE); }
@@ -180,7 +182,10 @@ Comments = #[^\r\n]*
   /* Comment. */
   {Comments}                  { /* ignore */ }
 }
-
+<STR>{
+    {StringLiteral}           {currString+=yytext();}
+    "\""                      {yybegin(AFTER); return symbol(ChocoPyTokens.STRING, currString);}
+}
 <<EOF>>                       { return symbol(ChocoPyTokens.EOF); }
 
 /* Error fallback. */