public virtual IAnalysisSet BinaryOperation(BinaryOperator node, AnalysisUnit unit, IAnalysisSet value) {
return SelfSet.Union(value);
}
public override bool Walk(BinaryOperator node)
{
if (node.OperatorToken == JSToken.Assign) {
if (node.Operand1 is Lookup) {
var declScope = _curUnit.Environment;
var prevScope = declScope.HasChildren ? declScope.Children.Last() : null;
StatementEnvironmentRecord prevStmtScope;
if ((prevStmtScope = prevScope as StatementEnvironmentRecord) != null) {
prevStmtScope.EndIndex = node.GetStartIndex(_tree.LocationResolver);
}
var nameExpr = node.Operand1 as Lookup;
PushDefiniteAssignmentEnvironmentRecord(node, nameExpr.Name);
_scope.AddVariable(nameExpr.Name, CreateVariableInDeclaredScope(nameExpr));
} else {
UpdateChildRanges(node);
}
} else if (node.OperatorToken > JSToken.Assign && node.OperatorToken <= JSToken.LastAssign) {
UpdateChildRanges(node);
}
return true;
}
public override bool Walk(BinaryOperator node) { AddNode(node); return true; }
public virtual void AugmentAssign(BinaryOperator node, AnalysisUnit unit, IAnalysisSet value) {
}
public override bool Walk(BinaryOperator node)
{
if (node != null)
{
if (node.Operand1 != null)
{
node.Operand1.Walk(this);
}
if (node.Operand2 != null)
{
node.Operand2.Walk(this);
}
}
return false;
}
/// <summary>
/// Performs the specified operation on the value.
/// </summary>
public static IAnalysisSet BinaryOperation(this IAnalysisSet self, BinaryOperator node, AnalysisUnit unit, IAnalysisSet value) {
var res = AnalysisSet.Empty;
foreach (var ns in self) {
res = res.Union(ns.Value.BinaryOperation(node, unit, value));
}
return res;
}
/// <summary>
/// Performs an augmented assignment propagating the value into the
/// object.
/// </summary>
public static void AugmentAssign(this IAnalysisSet self, BinaryOperator node, AnalysisUnit unit, IAnalysisSet value) {
foreach (var ns in self) {
ns.Value.AugmentAssign(node, unit, value);
}
}
public override IAnalysisSet BinaryOperation(BinaryOperator node, AnalysisUnit unit, IAnalysisSet value) {
if (node.OperatorToken == JSToken.Plus) {
return _analyzer._emptyStringValue.SelfSet;
}
return base.BinaryOperation(node, unit, value);
}
public override bool Walk(BinaryOperator node) {
node.Operand1.Walk(this);
ReplaceFollowingWhiteSpace(
node.Operand1.GetEndIndex(_tree.LocationResolver),
_options.SpaceBeforeAndAfterBinaryOperator ? " " : null
);
ReplacePreceedingWhiteSpace(
node.Operand2.GetStartIndex(_tree.LocationResolver),
_options.SpaceBeforeAndAfterBinaryOperator ? " " : null,
null,
_newlines
);
node.Operand2.Walk(this);
return false;
}