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package edu.rice.cs.drjava.model.definitions.reducedmodel;
import static edu.rice.cs.drjava.model.definitions.reducedmodel.ReducedModelStates.*;
/** Shadowing state that indicates normal, unshadowed text.
* @version $Id: Free.java 5175 2010-01-20 08:46:32Z mgricken $
*/
public class Free extends ReducedModelState {
public static final Free ONLY = new Free();
private Free() { }
/** Walk function for when we're not inside a string or comment. Mutually recursive with other walk functions.
* <ol>
* <li> atEnd: return
* <li> If we find / *, * /, or / /, combine them into a single Brace, and keep the cursor on that Brace.
* <li> If current brace = //, go to next then call updateLineComment.<BR>
* If current brace = /*, go to next then call updateBlockComment.<BR>
* If current brace = ", go to next then call updateInsideDoubleQuote.<BR>
* Else, mark current brace as FREE, go to the next brace, and recur.
* </ol>
*/
ReducedModelState update(TokenList.Iterator copyCursor) {
if (copyCursor.atEnd()) return STUTTER;
_combineCurrentAndNextIfFind("/", "*", copyCursor);
_combineCurrentAndNextIfFind("/", "/", copyCursor);
_combineCurrentAndNextIfFind("","", copyCursor);
//if a / preceeds a /* or a // combine them.
_combineCurrentAndNextIfFind("/","/*",copyCursor);
_combineCurrentAndNextIfFind("/","//",copyCursor);
_combineCurrentAndNextIfEscape(copyCursor);
String type = copyCursor.current().getType();
if (type.equals("*/")) {
copyCursor._splitCurrentIfCommentBlock(true,false);
copyCursor.prev();
return STUTTER;
}
else if (type.equals("//")) {
// open comment blocks are not set commented, they're set free
copyCursor.current().setState(FREE);
copyCursor.next();
return INSIDE_LINE_COMMENT;
}
else if (type.equals("/*")) {
// open comment blocks are not set commented, they're set free
copyCursor.current().setState(FREE);
copyCursor.next();
return INSIDE_BLOCK_COMMENT;
}
else if (type.equals("\'")) {
// make sure this is a OPEN single quote
if (copyCursor.current().isClosed()) {
copyCursor.current().flip();
}
copyCursor.current().setState(FREE);
copyCursor.next();
return INSIDE_SINGLE_QUOTE;
}
else if (type.equals("\"")) {
// make sure this is a OPEN quote
if (copyCursor.current().isClosed()) {
copyCursor.current().flip();
}
copyCursor.current().setState(FREE);
copyCursor.next();
return INSIDE_DOUBLE_QUOTE;
}
else {
copyCursor.current().setState(FREE);
copyCursor.next();
return FREE;
}
}
}
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