public override bool Equals(Expression other)
{
LetClause letClause = other as LetClause;
return(letClause != null &&
this.Identifier.Equals(letClause.Identifier) &&
this.Expression.Equals(letClause.Expression));
}
public override void VisitLetClause(LetClause node)
{
WriteKeyword(KeyWordWriter.LinqLet);
WriteSpace();
Visit(node.Identifier);
Write(" = ");
Visit(node.Expression);
}
public virtual void VisitLetClause(LetClause node)
{
Visit(node.Identifier);
Visit(node.Expression);
}
private LetClause GenerateLetClause(Dictionary<PropertyDefinition, Expression> propertyToValueMap, VariableReference oldIdentifier)
{
PropertyDefinition oldIdentifierProperty = null;
PropertyDefinition newIdentifierProperty = null;
foreach (KeyValuePair<PropertyDefinition, Expression> pair in propertyToValueMap)
{
if (pair.Key.Name == oldIdentifier.Name && pair.Value.CodeNodeType == CodeNodeType.VariableReferenceExpression &&
(pair.Value as VariableReferenceExpression).Variable == oldIdentifier)
{
oldIdentifierProperty = pair.Key;
}
else
{
newIdentifierProperty = pair.Key;
}
}
if (oldIdentifierProperty == null || newIdentifierProperty == null)
{
return null;
}
Expression newIdentifierValue = propertyToValueMap[newIdentifierProperty];
VariableDefinition newIdentifier = CreateNewIdentifier(newIdentifierProperty.Name, newIdentifierValue.ExpressionType);
LetClause result = new LetClause(new VariableReferenceExpression(newIdentifier, null), newIdentifierValue, null);
propertyToValueMap[newIdentifierProperty] = result.Identifier;
return result;
}
