package org.nodeclipse.ui.highlight;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.rules.EndOfLineRule;
import org.eclipse.jface.text.rules.ICharacterScanner;
import org.eclipse.jface.text.rules.IPredicateRule;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.rules.IWordDetector;
import org.eclipse.jface.text.rules.MultiLineRule;
import org.eclipse.jface.text.rules.RuleBasedPartitionScanner;
import org.eclipse.jface.text.rules.SingleLineRule;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.rules.WordRule;
public class NodePartitionScanner extends RuleBasedPartitionScanner {
public static final String PARTITIONING = "NodePartitioning";
public static final String MULTILINE_COMMENT = "__node_multiline_comment";
public static final String NODEDOC = "__nodedoc";
public static final String[] PARTITION_TYPES = { MULTILINE_COMMENT, NODEDOC };
public static final String[] CONTENT_TYPES = { IDocument.DEFAULT_CONTENT_TYPE, NODEDOC, MULTILINE_COMMENT };
private static class EmptyCommentDetector implements IWordDetector {
public boolean isWordStart(char c) {
return (c == '/');
}
public boolean isWordPart(char c) {
return (c == '*' || c == '/');
}
}
private static class EmptyCommentPredicateRule extends WordRule implements IPredicateRule {
private final IToken successToken;
public EmptyCommentPredicateRule(IToken successToken) {
super(new EmptyCommentDetector());
this.successToken = successToken;
addWord("/**/", successToken); //$NON-NLS-1$
}
public IToken evaluate(ICharacterScanner scanner, boolean resume) {
return super.evaluate(scanner);
}
public IToken getSuccessToken() {
return successToken;
}
}
public NodePartitionScanner() {
IToken jsDocToken = new Token(NODEDOC);
IToken multilineCommentToken = new Token(MULTILINE_COMMENT);
setPredicateRules(new IPredicateRule[] { new EndOfLineRule("//", Token.UNDEFINED), //$NON-NLS-1$
new SingleLineRule("\"", "\"", Token.UNDEFINED, '\\'), //$NON-NLS-2$ //$NON-NLS-1$
new SingleLineRule("'", "'", Token.UNDEFINED, '\\'), //$NON-NLS-2$ //$NON-NLS-1$
new EmptyCommentPredicateRule(multilineCommentToken), new MultiLineRule("/**", "*/", jsDocToken, (char) 0, true), //$NON-NLS-1$ //$NON-NLS-2$
new MultiLineRule("/*", "*/", multilineCommentToken, (char) 0, true) //$NON-NLS-1$ //$NON-NLS-2$
});
}
}