public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj instanceof Token) {
Token t2 = (Token) obj;
return type == t2.getType()
&& lexeme.equals(t2.getLexeme())
&& line == t2.getLine()
&& column == t2.getColumn()
&& invalid == t2.isInvalid();
}
return false;
}
private boolean step() throws LexicalError, SyntaticError, SemanticError {
if (currentToken == null) {
int pos = 0;
if (previousToken != null)
pos = previousToken.getPosition() + previousToken.getLexeme().length();
currentToken = new Token(DOLLAR, "$", pos);
}
int x = ((Integer) stack.pop()).intValue();
int a = currentToken.getId();
if (x == EPSILON) {
return false;
} else if (isTerminal(x)) {
if (x == a) {
if (stack.empty()) return true;
else {
previousToken = currentToken;
currentToken = scanner.nextToken();
return false;
}
} else {
throw new SyntaticError(PARSER_ERROR[x], currentToken.getPosition());
}
} else if (isNonTerminal(x)) {
if (pushProduction(x, a)) return false;
else throw new SyntaticError(PARSER_ERROR[x], currentToken.getPosition());
} else // isSemanticAction(x)
{
if (executaAcoesSemanticas) {
semanticAnalyser.executeAction(x - FIRST_SEMANTIC_ACTION, previousToken);
}
return false;
}
}
/** {@inheritDoc} */
public void markOccurrences(
RSyntaxDocument doc,
Token t,
RSyntaxTextAreaHighlighter h,
MarkOccurrencesHighlightPainter p) {
char[] lexeme = t.getLexeme().toCharArray();
int tokenOffs = t.getOffset();
Element root = doc.getDefaultRootElement();
int lineCount = root.getElementCount();
int curLine = root.getElementIndex(t.getOffset());
// For now, we only check for tags on the current line, for
// simplicity. Tags spanning multiple lines aren't common anyway.
boolean found = false;
boolean forward = true;
t = doc.getTokenListForLine(curLine);
while (t != null && t.isPaintable()) {
if (t.getType() == Token.MARKUP_TAG_DELIMITER) {
if (t.isSingleChar('<') && t.getOffset() + 1 == tokenOffs) {
found = true;
break;
} else if (t.is(CLOSE_TAG_START) && t.getOffset() + 2 == tokenOffs) {
found = true;
forward = false;
break;
}
}
t = t.getNextToken();
}
if (!found) {
return;
}
if (forward) {
int depth = 0;
t = t.getNextToken().getNextToken();
do {
while (t != null && t.isPaintable()) {
if (t.getType() == Token.MARKUP_TAG_DELIMITER) {
if (t.isSingleChar('<')) {
depth++;
} else if (t.is(TAG_SELF_CLOSE)) {
if (depth > 0) {
depth--;
} else {
return; // No match for this tag
}
} else if (t.is(CLOSE_TAG_START)) {
if (depth > 0) {
depth--;
} else {
Token match = t.getNextToken();
if (match != null && match.is(lexeme)) {
try {
int end = match.getOffset() + match.length();
h.addMarkedOccurrenceHighlight(match.getOffset(), end, p);
end = tokenOffs + match.length();
h.addMarkedOccurrenceHighlight(tokenOffs, end, p);
} catch (BadLocationException ble) {
ble.printStackTrace(); // Never happens
}
}
return; // We're done!
}
}
}
t = t.getNextToken();
}
if (++curLine < lineCount) {
t = doc.getTokenListForLine(curLine);
}
} while (curLine < lineCount);
} else { // !forward
Stack<Token> matches = new Stack<Token>();
boolean inPossibleMatch = false;
t = doc.getTokenListForLine(curLine);
final int endBefore = tokenOffs - 2; // Stop before "</".
do {
while (t != null && t.getOffset() < endBefore && t.isPaintable()) {
if (t.getType() == Token.MARKUP_TAG_DELIMITER) {
if (t.isSingleChar('<')) {
Token next = t.getNextToken();
if (next != null) {
if (next.is(lexeme)) {
matches.push(next);
inPossibleMatch = true;
} else {
inPossibleMatch = false;
}
t = next;
}
} else if (t.isSingleChar('>')) {
inPossibleMatch = false;
} else if (inPossibleMatch && t.is(TAG_SELF_CLOSE)) {
matches.pop();
} else if (t.is(CLOSE_TAG_START)) {
Token next = t.getNextToken();
if (next != null) {
// Invalid XML might not have a match
if (next.is(lexeme) && !matches.isEmpty()) {
matches.pop();
}
t = next;
}
}
}
t = t.getNextToken();
}
if (!matches.isEmpty()) {
try {
Token match = matches.pop();
int end = match.getOffset() + match.length();
h.addMarkedOccurrenceHighlight(match.getOffset(), end, p);
end = tokenOffs + match.length();
h.addMarkedOccurrenceHighlight(tokenOffs, end, p);
} catch (BadLocationException ble) {
ble.printStackTrace(); // Never happens
}
return;
}
if (--curLine >= 0) {
t = doc.getTokenListForLine(curLine);
}
} while (curLine >= 0);
}
}