public void testOuterVarAccess() {
resolveSource("Test", "class Test { int i; class Inner { void test() { i++; } } }");
TypeDeclaration innerNode = (TypeDeclaration) nodesByType.get(ASTNode.TYPE_DECLARATION).get(1);
assertTrue(OuterReferenceResolver.needsOuterReference(innerNode.resolveBinding()));
PostfixExpression increment =
(PostfixExpression) nodesByType.get(ASTNode.POSTFIX_EXPRESSION).get(0);
List<IVariableBinding> path = OuterReferenceResolver.getPath(increment.getOperand());
assertNotNull(path);
assertEquals(2, path.size());
assertEquals("Test", path.get(0).getType().getName());
}
/*
* Must be one of:
* <ul>
* <li>[indexBinding]++</li>
* <li>++[indexBinding]</li>
* <li>[indexBinding]+= 1</li>
* <li>[indexBinding]= [indexBinding] + 1</li>
* <li>[indexBinding]= 1 + [indexBinding]</li>
* <ul>
*/
private boolean validateUpdaters(ForStatement statement) {
List<Expression> updaters = statement.updaters();
if (updaters.size() != 1) return false;
Expression updater = updaters.get(0);
if (updater instanceof PostfixExpression) {
PostfixExpression postfix = (PostfixExpression) updater;
if (!PostfixExpression.Operator.INCREMENT.equals(postfix.getOperator())) return false;
IBinding binding = getBinding(postfix.getOperand());
if (!fIndexBinding.equals(binding)) return false;
return true;
} else if (updater instanceof PrefixExpression) {
PrefixExpression prefix = (PrefixExpression) updater;
if (!PrefixExpression.Operator.INCREMENT.equals(prefix.getOperator())) return false;
IBinding binding = getBinding(prefix.getOperand());
if (!fIndexBinding.equals(binding)) return false;
return true;
} else if (updater instanceof Assignment) {
Assignment assignment = (Assignment) updater;
Expression left = assignment.getLeftHandSide();
IBinding binding = getBinding(left);
if (!fIndexBinding.equals(binding)) return false;
if (Assignment.Operator.PLUS_ASSIGN.equals(assignment.getOperator())) {
return isOneLiteral(assignment.getRightHandSide());
} else if (Assignment.Operator.ASSIGN.equals(assignment.getOperator())) {
Expression right = assignment.getRightHandSide();
if (!(right instanceof InfixExpression)) return false;
InfixExpression infixExpression = (InfixExpression) right;
Expression leftOperand = infixExpression.getLeftOperand();
IBinding leftBinding = getBinding(leftOperand);
Expression rightOperand = infixExpression.getRightOperand();
IBinding rightBinding = getBinding(rightOperand);
if (fIndexBinding.equals(leftBinding)) {
return isOneLiteral(rightOperand);
} else if (fIndexBinding.equals(rightBinding)) {
return isOneLiteral(leftOperand);
}
}
}
return false;
}
public void endVisit(PostfixExpression node) {
VMExpression expression = (VMExpression) expressions.pop();
PostfixExpression.Operator rawOperator = node.getOperator();
VMPostfixExpression.Operator operator =
VMPostfixExpression.Operator.toOperator(rawOperator.toString());
expressions.push(new VMPostfixExpression(node, operator, expression));
};
/**
* Converts an assignment, postfix expression or prefix expression into an assignable equivalent
* expression using the getter.
*
* @param node the assignment/prefix/postfix node
* @param astRewrite the astRewrite to use
* @param getterExpression the expression to insert for read accesses or <code>null</code> if such
* an expression does not exist
* @param variableType the type of the variable that the result will be assigned to
* @param is50OrHigher <code>true</code> if a 5.0 or higher environment can be used
* @return an expression that can be assigned to the type variableType with node being replaced by
* a equivalent expression using the getter
*/
public static Expression getAssignedValue(
ASTNode node,
ASTRewrite astRewrite,
Expression getterExpression,
ITypeBinding variableType,
boolean is50OrHigher) {
InfixExpression.Operator op = null;
AST ast = astRewrite.getAST();
if (isNotInBlock(node)) return null;
if (node.getNodeType() == ASTNode.ASSIGNMENT) {
Assignment assignment = ((Assignment) node);
Expression rightHandSide = assignment.getRightHandSide();
Expression copiedRightOp = (Expression) astRewrite.createCopyTarget(rightHandSide);
if (assignment.getOperator() == Operator.ASSIGN) {
ITypeBinding rightHandSideType = rightHandSide.resolveTypeBinding();
copiedRightOp =
createNarrowCastIfNessecary(
copiedRightOp, rightHandSideType, ast, variableType, is50OrHigher);
return copiedRightOp;
}
if (getterExpression != null) {
InfixExpression infix = ast.newInfixExpression();
infix.setLeftOperand(getterExpression);
infix.setOperator(ASTNodes.convertToInfixOperator(assignment.getOperator()));
infix.setRightOperand(copiedRightOp);
ITypeBinding infixType = infix.resolveTypeBinding();
return createNarrowCastIfNessecary(infix, infixType, ast, variableType, is50OrHigher);
}
} else if (node.getNodeType() == ASTNode.POSTFIX_EXPRESSION) {
PostfixExpression po = (PostfixExpression) node;
if (po.getOperator() == PostfixExpression.Operator.INCREMENT)
op = InfixExpression.Operator.PLUS;
if (po.getOperator() == PostfixExpression.Operator.DECREMENT)
op = InfixExpression.Operator.MINUS;
} else if (node.getNodeType() == ASTNode.PREFIX_EXPRESSION) {
PrefixExpression pe = (PrefixExpression) node;
if (pe.getOperator() == PrefixExpression.Operator.INCREMENT)
op = InfixExpression.Operator.PLUS;
if (pe.getOperator() == PrefixExpression.Operator.DECREMENT)
op = InfixExpression.Operator.MINUS;
}
if (op != null && getterExpression != null) {
return createInfixInvocationFromPostPrefixExpression(
op, getterExpression, ast, variableType, is50OrHigher);
}
return null;
}
/*
* @see ASTVisitor#visit(PostfixExpression)
*/
public boolean visit(PostfixExpression node) {
node.getOperand().accept(this);
this.fBuffer.append(node.getOperator().toString());
return false;
}