Bug 120389 [quick fix] replace conditional with if-else removes + from +=
Using Build I20051102-1600. I create a class [snip] package bla; class Bla { void bla() { boolean cond = true; int i = 42; i += ( cond ) ? 1 : 2; } } [snap] Now I move the cursor over the second cond and trigger the Quickfix 'Replace conditional with if-else'. This results in [snip] int i = 42; if (cond) i = 1; else i = 2; [snap] i.e. replaces the '+=' with '='. (Credit to Jordi Boehme for finding this.)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/AdvancedQuickAssistProcessor.java
}
		
		InfixExpression topInfixExpression = infixExpression;
		while ((topInfixExpression.getParent() instanceof InfixExpression)
				&& ((InfixExpression) topInfixExpression.getParent()).getOperator() == andOperator) {
			topInfixExpression = (InfixExpression) topInfixExpression.getParent();
		}
		if (ifStatement.getExpression() != topInfixExpression) {
			return false;
		}
		
		if (resultingCollections == null) {
			return true;
		}
		AST ast = ifStatement.getAST();
		ASTRewrite rewrite = ASTRewrite.create(ast);
		
		
		Expression[] newOperands= { null, null };
		breakInfixOperationAtOperation(rewrite, topInfixExpression, andOperator, offset, true, newOperands);
		Expression leftCondition= newOperands[0];
		Expression rightCondition= newOperands[1];
		
		
		rewrite.set(ifStatement, IfStatement.EXPRESSION_PROPERTY, rightCondition, null);
		
		IfStatement outerIfStatement = ast.newIfStatement();
		outerIfStatement.setExpression(leftCondition);
		Block outerBlock = ast.newBlock();
		outerIfStatement.setThenStatement(outerBlock);