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); }