public void VisitNode(JSPointerComparisonExpression pce)
{
VisitChildren(pce);
}
public void VisitNode (JSBinaryOperatorExpression boe) {
var leftType = boe.Left.GetActualType(TypeSystem);
var rightType = boe.Right.GetActualType(TypeSystem);
// We can end up with a pointer literal in an arithmetic expression.
// In this case we want to switch it back to a normal integer literal so that the math operations work.
var leftPointer = boe.Left as JSPointerLiteral;
var rightPointer = boe.Right as JSPointerLiteral;
if (!(boe.Operator is JSAssignmentOperator)) {
if (leftPointer != null)
boe.ReplaceChild(boe.Left, JSLiteral.New(leftPointer.Value));
if (rightPointer != null)
boe.ReplaceChild(boe.Right, JSLiteral.New(rightPointer.Value));
}
JSExpression replacement = null;
if (leftType.IsPointer && TypeUtil.IsIntegral(rightType)) {
if (
(boe.Operator == JSOperator.Add) ||
(boe.Operator == JSOperator.AddAssignment)
) {
replacement = new JSPointerAddExpression(
boe.Left, boe.Right,
boe.Operator == JSOperator.AddAssignment
);
} else if (
(boe.Operator == JSOperator.Subtract) ||
(boe.Operator == JSOperator.SubtractAssignment)
) {
// FIXME: Int32 is probably wrong
replacement = new JSPointerAddExpression(
boe.Left,
new JSUnaryOperatorExpression(JSOperator.Negation, boe.Right, TypeSystem.Int32),
boe.Operator == JSOperator.SubtractAssignment
);
}
} else if (leftType.IsPointer && rightType.IsPointer) {
if (boe.Operator == JSOperator.Subtract) {
// FIXME: Int32 is probably wrong
replacement = new JSPointerDeltaExpression(
boe.Left, boe.Right, TypeSystem.Int32
);
} else if (boe.Operator is JSComparisonOperator) {
replacement = new JSPointerComparisonExpression(boe.Operator, boe.Left, boe.Right, boe.ActualType);
}
}
if (replacement != null) {
ParentNode.ReplaceChild(boe, replacement);
VisitReplacement(replacement);
} else {
VisitChildren(boe);
}
}
public void VisitNode(JSBinaryOperatorExpression boe)
{
var leftType = boe.Left.GetActualType(TypeSystem);
var rightType = boe.Right.GetActualType(TypeSystem);
// We can end up with a pointer literal in an arithmetic expression.
// In this case we want to switch it back to a normal integer literal so that the math operations work.
var leftPointer = boe.Left as JSPointerLiteral;
var rightPointer = boe.Right as JSPointerLiteral;
if (!(boe.Operator is JSAssignmentOperator))
{
if (leftPointer != null)
{
boe.ReplaceChild(boe.Left, JSLiteral.New(leftPointer.Value));
}
if (rightPointer != null)
{
boe.ReplaceChild(boe.Right, JSLiteral.New(rightPointer.Value));
}
}
JSExpression replacement = null;
if (leftType.IsPointer && TypeUtil.IsIntegral(rightType))
{
if (
(boe.Operator == JSOperator.Add) ||
(boe.Operator == JSOperator.AddAssignment)
)
{
replacement = new JSPointerAddExpression(
boe.Left, boe.Right,
boe.Operator == JSOperator.AddAssignment
);
}
else if (
(boe.Operator == JSOperator.Subtract) ||
(boe.Operator == JSOperator.SubtractAssignment)
)
{
// FIXME: Int32 is probably wrong
replacement = new JSPointerAddExpression(
boe.Left,
new JSUnaryOperatorExpression(JSOperator.Negation, boe.Right, TypeSystem.Int32),
boe.Operator == JSOperator.SubtractAssignment
);
}
}
else if (leftType.IsPointer && rightType.IsPointer)
{
if (boe.Operator == JSOperator.Subtract)
{
// FIXME: Int32 is probably wrong
replacement = new JSPointerDeltaExpression(
boe.Left, boe.Right, TypeSystem.Int32
);
}
else if (boe.Operator is JSComparisonOperator)
{
replacement = new JSPointerComparisonExpression(boe.Operator, boe.Left, boe.Right, boe.ActualType);
}
}
if (replacement != null)
{
ParentNode.ReplaceChild(boe, replacement);
VisitReplacement(replacement);
}
else
{
VisitChildren(boe);
}
}
public void VisitNode (JSPointerComparisonExpression pce) {
VisitChildren(pce);
}