/// <summary>
/// Helper method for processing the children of a When. Only parses Choose,
/// PropertyGroup, and ItemGroup. All other tags result in an error.
/// </summary>
/// <remarks>
/// </remarks>
/// <owner>DavidLe</owner>
/// <param name="parentNode"></param>
/// <param name="parentProjectForChildren"></param>
/// <param name="importedFromAnotherProject"></param>
/// <param name="options"></param>
/// <param name="nestingDepth">Number of parent <Choose> elements this is nested inside</param>
private void ProcessWhenChildren
(
XmlElement parentNode,
Project parentProjectForChildren, bool importedFromAnotherProject,
int nestingDepth
)
{
// Loop through the child nodes of the <When> element.
foreach (XmlNode whenChildNode in parentNode)
{
switch (whenChildNode.NodeType)
{
// Handle XML comments under the <When> node (just ignore them).
case XmlNodeType.Comment:
// fall through
case XmlNodeType.Whitespace:
// ignore whitespace
break;
case XmlNodeType.Element:
{
// Make sure this element doesn't have a custom namespace
ProjectXmlUtilities.VerifyThrowProjectValidNamespace((XmlElement)whenChildNode);
// The only three types of child nodes that a <When> element can contain
// are <PropertyGroup>, <ItemGroup> and <Choose>.
switch (whenChildNode.Name)
{
case XMakeElements.itemGroup:
BuildItemGroup newItemGroup = new BuildItemGroup((XmlElement)whenChildNode, importedFromAnotherProject, parentProjectForChildren);
this.propertyAndItemLists.InsertAtEnd(newItemGroup);
break;
// Process the <PropertyGroup> element.
case XMakeElements.propertyGroup:
BuildPropertyGroup newPropertyGroup = new BuildPropertyGroup(parentProjectForChildren, (XmlElement)whenChildNode, importedFromAnotherProject);
newPropertyGroup.EnsureNoReservedProperties();
this.propertyAndItemLists.InsertAtEnd(newPropertyGroup);
break;
// Process the <Choose> element.
case XMakeElements.choose:
Choose newChoose = new Choose(parentProjectForChildren, this.PropertyAndItemLists, (XmlElement)whenChildNode,
importedFromAnotherProject, nestingDepth);
this.propertyAndItemLists.InsertAtEnd(newChoose);
break;
default:
{
ProjectXmlUtilities.ThrowProjectInvalidChildElement(whenChildNode);
break;
}
}
}
break;
default:
{
ProjectXmlUtilities.ThrowProjectInvalidChildElement(whenChildNode);
break;
}
}
}
}
/// <summary>
/// Internal constructor
/// </summary>
/// <param name="importElement"></param>
/// <param name="isImported"></param>
/// <owner>LukaszG</owner>
internal Import(XmlElement importElement, Project parentProject, bool isImported)
{
this.importedFromAnotherProject = isImported;
// Make sure the <Import> node has been given to us.
ErrorUtilities.VerifyThrow(importElement != null,
"Need an XML node representing the <Import> element.");
this.importElement = importElement;
// Make sure we have a valid parent Project
ErrorUtilities.VerifyThrow(parentProject != null,
"Need a parent Project object to instantiate an Import.");
this.parentProject = parentProject;
// Make sure this really is the <Import> node.
ProjectXmlUtilities.VerifyThrowElementName(importElement, XMakeElements.import);
// Loop through the list of attributes on the <Import> element.
foreach (XmlAttribute importAttribute in importElement.Attributes)
{
switch (importAttribute.Name)
{
// The "project" attribute points us at the project file to import.
case XMakeAttributes.project:
// Just store the attribute value at this point. We want to make sure that we evaluate any
// Condition attribute before looking at the Project attribute - if the Condition is going to be false,
// it's legitimate for the value of the Project attribute to be completely invalid.
// For example, <Import Project="$(A)" Condition="$(A)!=''"/> should not cause an error
// that the Project attribute is empty.
this.projectPathAttribute = importAttribute;
break;
// If the "condition" attribute is present, then it must evaluate to "true".
case XMakeAttributes.condition:
this.conditionAttribute = importAttribute;
break;
// We've come across an attribute in the <Import> element that we
// don't recognize. Fail due to invalid project file.
default:
ProjectXmlUtilities.ThrowProjectInvalidAttribute(importAttribute);
break;
}
}
ProjectErrorUtilities.VerifyThrowInvalidProject((this.projectPathAttribute != null) && (this.projectPathAttribute.Value.Length != 0),
importElement, "MissingRequiredAttribute",
XMakeAttributes.project, XMakeElements.import);
// Make sure this node has no children. Our schema doesn't support having
// children beneath the <Import> element.
if (importElement.HasChildNodes)
{
// Don't put the "if" condition inside the first parameter to
// VerifyThrow..., because we'll get null reference exceptions,
// since the parameter importElement.FirstChild.Name is being
// passed in regardless of whether the condition holds true or not.
ProjectXmlUtilities.ThrowProjectInvalidChildElement(importElement.FirstChild);
}
}
/// <summary>
/// Creates a new UsingTask object
/// </summary>
/// <param name="usingTaskNode"></param>
/// <param name="isImported"></param>
/// <owner>LukaszG</owner>
internal UsingTask(XmlElement usingTaskNode, bool isImported)
{
this.importedFromAnotherProject = isImported;
// make sure this really is a <UsingTask> tag
ErrorUtilities.VerifyThrow(usingTaskNode.Name == XMakeElements.usingTask,
"Expected <{0}> element; received <{1}> element.", XMakeElements.usingTask, usingTaskNode.Name);
bool illegalChildElementFound = false;
XmlElement illegalChildElement = null;
foreach (XmlElement childElement in usingTaskNode.ChildNodes)
{
switch (childElement.Name)
{
case XMakeElements.usingTaskBody:
// ignore
break;
case XMakeElements.usingTaskParameter:
// ignore
break;
case XMakeElements.usingTaskParameterGroup:
// ignore
break;
default:
illegalChildElementFound = true;
illegalChildElement = childElement;
break;
}
if (illegalChildElementFound)
{
break;
}
}
// UsingTask has no valid child elements in 3.5 syntax, but in 4.0 syntax it does.
// So ignore any valid 4.0 child elements and try to load the project as usual, but
// still error out if something we don't expect is found.
if (illegalChildElementFound)
{
ProjectXmlUtilities.ThrowProjectInvalidChildElement(illegalChildElement);
}
foreach (XmlAttribute usingTaskAttribute in usingTaskNode.Attributes)
{
switch (usingTaskAttribute.Name)
{
// get the task name
case XMakeAttributes.taskName:
taskNameAttribute = usingTaskAttribute;
break;
// get the assembly name or the assembly file/path, whichever is specified...
case XMakeAttributes.assemblyName:
assemblyNameAttribute = usingTaskAttribute;
break;
case XMakeAttributes.assemblyFile:
assemblyFileAttribute = usingTaskAttribute;
break;
// ignore any RequiredRuntime XML attribute
// (we'll make this actually do something when we run on a CLR other than v2.0)
case XMakeAttributes.requiredRuntime:
// Do nothing
break;
// get the condition, if any
case XMakeAttributes.condition:
conditionAttribute = usingTaskAttribute;
break;
// This is only recognized by the new OM:
// Just ignore it
case XMakeAttributes.requiredPlatform:
// Do nothing
break;
// This is only recognized by the new OM:
// Just ignore it
case XMakeAttributes.taskFactory:
// Do nothing
break;
// This is only recognized by the new OM:
// Just ignore it
case XMakeAttributes.runtime:
// Do nothing
break;
// This is only recognized by the new OM:
// Just ignore it
case XMakeAttributes.architecture:
// Do nothing
break;
default:
ProjectXmlUtilities.ThrowProjectInvalidAttribute(usingTaskAttribute);
break;
}
}
ProjectErrorUtilities.VerifyThrowInvalidProject(taskNameAttribute != null,
usingTaskNode, "MissingRequiredAttribute", XMakeAttributes.taskName, XMakeElements.usingTask);
ProjectErrorUtilities.VerifyThrowInvalidProject(taskNameAttribute.Value.Length > 0,
taskNameAttribute, "InvalidAttributeValue", taskNameAttribute.Value, XMakeAttributes.taskName, XMakeElements.usingTask);
ProjectErrorUtilities.VerifyThrowInvalidProject((assemblyNameAttribute != null) || (assemblyFileAttribute != null),
usingTaskNode, "UsingTaskAssemblySpecification", XMakeElements.usingTask, XMakeAttributes.assemblyName, XMakeAttributes.assemblyFile);
ProjectErrorUtilities.VerifyThrowInvalidProject((assemblyNameAttribute == null) || (assemblyFileAttribute == null),
usingTaskNode, "UsingTaskAssemblySpecification", XMakeElements.usingTask, XMakeAttributes.assemblyName, XMakeAttributes.assemblyFile);
ProjectErrorUtilities.VerifyThrowInvalidProject((assemblyNameAttribute == null) || (assemblyNameAttribute.Value.Length > 0),
assemblyNameAttribute, "InvalidAttributeValue", String.Empty, XMakeAttributes.assemblyName, XMakeElements.usingTask);
ProjectErrorUtilities.VerifyThrowInvalidProject((assemblyFileAttribute == null) || (assemblyFileAttribute.Value.Length > 0),
assemblyFileAttribute, "InvalidAttributeValue", String.Empty, XMakeAttributes.assemblyFile, XMakeElements.usingTask);
}
/// <summary>
/// Constructor for the Choose object. Parses the contents of the Choose
/// and sets up list of When blocks
/// </summary>
/// <remarks>
/// </remarks>
/// <owner>DavidLe</owner>
/// <param name="parentProject"></param>
/// <param name="parentGroupingCollection"></param>
/// <param name="chooseElement"></param>
/// <param name="importedFromAnotherProject"></param>
/// <param name="nestingDepth">stack overflow guard</param>
internal Choose
(
Project parentProject,
GroupingCollection parentGroupingCollection,
XmlElement chooseElement,
bool importedFromAnotherProject,
int nestingDepth
)
{
whenClauseList = new ArrayList();
error.VerifyThrow(chooseElement != null, "Need valid <Choose> element.");
// Make sure this really is the <Choose> node.
ProjectXmlUtilities.VerifyThrowElementName(chooseElement, XMakeElements.choose);
// Stack overflow guard. The only way in the MSBuild file format that MSBuild elements can be
// legitimately nested without limit is the <Choose> construct. So, enforce a nesting limit
// to avoid blowing our stack.
nestingDepth++;
ProjectErrorUtilities.VerifyThrowInvalidProject(nestingDepth <= maximumChooseNesting, chooseElement, "ChooseOverflow", maximumChooseNesting);
this.importedFromAnotherProject = importedFromAnotherProject;
// This <Choose> is coming from an existing XML element, so
// walk through all the attributes and child elements, creating the
// necessary When objects.
// No attributes on the <Choose> element, so don't allow any.
ProjectXmlUtilities.VerifyThrowProjectNoAttributes(chooseElement);
bool foundOtherwise = false;
// Loop through the child nodes of the <Choose> element.
foreach (XmlNode chooseChildNode in chooseElement)
{
switch (chooseChildNode.NodeType)
{
// Handle XML comments under the <PropertyGroup> node (just ignore them).
case XmlNodeType.Comment:
// fall through
case XmlNodeType.Whitespace:
// ignore whitespace
break;
case XmlNodeType.Element:
// The only two types of child nodes that a <Choose> element can contain
// is are <When> elements and zero or one <Otherwise> elements.
ProjectXmlUtilities.VerifyThrowProjectValidNamespace((XmlElement)chooseChildNode);
if (chooseChildNode.Name == XMakeElements.when)
{
// don't allow <When> to follow <Otherwise>
ProjectErrorUtilities.VerifyThrowInvalidProject(!foundOtherwise,
chooseChildNode, "WhenNotAllowedAfterOtherwise");
When newWhen = new When(parentProject,
parentGroupingCollection,
(XmlElement)chooseChildNode,
importedFromAnotherProject,
When.Options.ProcessWhen,
nestingDepth);
this.whenClauseList.Add(newWhen);
}
else if (chooseChildNode.Name == XMakeElements.otherwise)
{
ProjectErrorUtilities.VerifyThrowInvalidProject(!foundOtherwise,
chooseChildNode, "MultipleOtherwise");
When newWhen = new When(parentProject,
parentGroupingCollection,
(XmlElement)chooseChildNode,
importedFromAnotherProject,
When.Options.ProcessOtherwise,
nestingDepth);
otherwiseClause = newWhen;
foundOtherwise = true;
}
else
{
ProjectXmlUtilities.ThrowProjectInvalidChildElement(chooseChildNode);
}
break;
default:
// Unrecognized child element.
ProjectXmlUtilities.ThrowProjectInvalidChildElement(chooseChildNode);
break;
}
}
ProjectErrorUtilities.VerifyThrowInvalidProject(this.whenClauseList.Count != 0,
chooseElement, "ChooseMustContainWhen");
}