public EditList getEditList() {
try {
BaseDocument doc = context.doc;
Node bodyNode = ifNode.getThenBody();
boolean isIf = bodyNode != null;
if (bodyNode == null) {
bodyNode = ifNode.getElseBody();
}
ParserResult info = context.parserResult;
OffsetRange bodyRange = AstUtilities.getRange(bodyNode);
bodyRange = LexUtilities.getLexerOffsets(info, bodyRange);
if (bodyRange == OffsetRange.NONE) {
return null;
}
String body = doc.getText(bodyRange.getStart(), bodyRange.getLength()).trim();
if (body.endsWith(";")) {
body = body.substring(0, body.length() - 1);
}
StringBuilder sb = new StringBuilder();
sb.append(body);
sb.append(" ");
sb.append(isIf ? "if" : "unless"); // NOI18N
sb.append(" ");
OffsetRange range = AstUtilities.getRange(ifNode.getCondition());
range = LexUtilities.getLexerOffsets(info, range);
if (range == OffsetRange.NONE) {
return null;
}
sb.append(doc.getText(range.getStart(), range.getLength()));
OffsetRange ifRange = AstUtilities.getRange(ifNode);
ifRange = LexUtilities.getLexerOffsets(info, ifRange);
if (ifRange == OffsetRange.NONE) {
return null;
}
return new EditList(doc)
.replace(ifRange.getStart(), ifRange.getLength(), sb.toString(), false, 0);
} catch (Exception ex) {
Exceptions.printStackTrace(ex);
return null;
}
}
public void run(RubyRuleContext context, List<Hint> result) {
Node node = context.node;
ParserResult info = context.parserResult;
IfNode ifNode = (IfNode) node;
if (ifNode.getCondition() == null) {
// Can happen for this code:
// if ()
// end
// (typically while editing)
return;
}
Node body = ifNode.getThenBody();
Node elseNode = ifNode.getElseBody();
if (body != null && elseNode != null) {
// Can't convert if-then-else conditionals
return;
}
if (body == null && elseNode == null) {
// Can't convert empty conditions
return;
}
// Can't convert if !x/elseif blocks
if (ifNode.getElseBody() != null && ifNode.getElseBody().getNodeType() == NodeType.IFNODE) {
return;
}
int start = ifNode.getPosition().getStartOffset();
if (!RubyHints.isNullOrInvisible(body)
&& (
// Can't convert blocks with multiple statements
body.getNodeType() == NodeType.BLOCKNODE
||
// Already a statement modifier?
body.getPosition().getStartOffset() <= start)) {
return;
} else if (!RubyHints.isNullOrInvisible(elseNode)
&& (elseNode.getNodeType() == NodeType.BLOCKNODE
|| elseNode.getPosition().getStartOffset() <= start)) {
return;
}
BaseDocument doc = context.doc;
try {
int keywordOffset = ConvertIfToUnless.findKeywordOffset(context, ifNode);
if (keywordOffset == -1 || keywordOffset > doc.getLength() - 1) {
return;
}
char k = doc.getText(keywordOffset, 1).charAt(0);
if (!(k == 'i' || k == 'u')) {
return; // Probably ternary operator, ?:
}
} catch (BadLocationException ble) {
Exceptions.printStackTrace(ble);
}
// If statement that is not already a statement modifier
OffsetRange range = AstUtilities.getRange(node);
if (RubyUtils.isRhtmlDocument(doc) || RubyUtils.isYamlDocument(doc)) {
// Make sure that we're in a single contiguous Ruby section; if not, this won't work
range = LexUtilities.getLexerOffsets(info, range);
if (range == OffsetRange.NONE) {
return;
}
try {
doc.readLock();
TokenHierarchy th = TokenHierarchy.get(doc);
TokenSequence ts = th.tokenSequence();
ts.move(range.getStart());
if (!ts.moveNext() && !ts.movePrevious()) {
return;
}
if (ts.offset() + ts.token().length() < range.getEnd()) {
return;
}
} finally {
doc.readUnlock();
}
}
ConvertToModifier fix = new ConvertToModifier(context, ifNode);
if (fix.getEditList() == null) {
return;
}
List<HintFix> fixes = Collections.<HintFix>singletonList(fix);
String displayName = NbBundle.getMessage(ConvertConditionals.class, "ConvertConditionals");
Hint desc = new Hint(this, displayName, RubyUtils.getFileObject(info), range, fixes, 500);
result.add(desc);
}