public virtual ParamBlockAst VisitParamBlock(ParamBlockAst paramBlockAst)
{
return(new ParamBlockAst(
paramBlockAst.Extent,
paramBlockAst.Attributes.RewriteAll(this, SyntaxKind.Attribute),
paramBlockAst.Parameters.RewriteAll(this)));
}
private bool TryGetParameterAst(
FunctionDefinitionAst functionDefinitionAst,
string parameter,
out int parameterIndex,
out ParameterAst[] parameters,
out ParamBlockAst paramBlockAst)
{
if (functionDefinitionAst.Parameters != null)
{
if (TryGetParameterAst(functionDefinitionAst.Parameters, parameter, out parameterIndex))
{
parameters = new List <ParameterAst>(functionDefinitionAst.Parameters).ToArray();
paramBlockAst = null;
functionDefinitionAst.Parameters.CopyTo(parameters, 0);
return(true);
}
}
else if (functionDefinitionAst.Body.ParamBlock?.Parameters != null)
{
if (TryGetParameterAst(
functionDefinitionAst.Body.ParamBlock.Parameters,
parameter,
out parameterIndex))
{
parameters = new List <ParameterAst>(functionDefinitionAst.Body.ParamBlock.Parameters).ToArray();
paramBlockAst = functionDefinitionAst.Body.ParamBlock;
return(true);
}
}
parameterIndex = -1;
paramBlockAst = null;
parameters = null;
return(false);
}
public object VisitParamBlock(ParamBlockAst paramBlockAst)
{
var attributes = VisitAst(paramBlockAst.Attributes);
var parameters = VisitAst(paramBlockAst.Parameters);
return(new ParamBlockAst(paramBlockAst.Extent, attributes, parameters));
}
public object VisitParamBlock(ParamBlockAst paramBlockAst)
{
var newAttributes = VisitElements(paramBlockAst.Attributes);
var newParameters = VisitElements(paramBlockAst.Parameters);
return(new ParamBlockAst(paramBlockAst.Extent, newAttributes, newParameters));
}
private ScriptBlock ConstructScriptBlockWithNewParamBlock(ScriptBlockAst oldScriptBlockAst, HashSet <string> parametersToRedefine)
{
var parameterAsts = new List <ParameterAst>(oldScriptBlockAst.ParamBlock.Parameters.Count);
foreach (ParameterAst parameter in oldScriptBlockAst.ParamBlock.Parameters)
{
if (!parametersToRedefine.Contains(parameter.Name.VariablePath.UserPath))
{
parameterAsts.Add(parameter);
continue;
}
parameterAsts.Add(CreateStrippedParameterAst(parameter));
}
var newParamBlock = new ParamBlockAst(
oldScriptBlockAst.ParamBlock.Extent,
CopyAstCollection(oldScriptBlockAst.Attributes),
CopyAstCollection(parameterAsts));
return(new ScriptBlockAst(
oldScriptBlockAst.Extent,
newParamBlock,
(NamedBlockAst)oldScriptBlockAst.BeginBlock?.Copy(),
(NamedBlockAst)oldScriptBlockAst.ProcessBlock?.Copy(),
(NamedBlockAst)oldScriptBlockAst.EndBlock?.Copy(),
(NamedBlockAst)oldScriptBlockAst.DynamicParamBlock?.Copy()).GetScriptBlock());
}
public override object VisitParamBlock(ParamBlockAst paramBlockAst)
{
VisitElements(paramBlockAst.Attributes, ",");
script_.Write("Param(");
VisitElements(paramBlockAst.Parameters, ",");
script_.Write(")");
return(paramBlockAst);
}
public void ShouldNotHaveParamBlockIfScriptHasNoParametersDefined()
{
var ast = GenerateAst(scriptWithoutParameters);
ParamBlockAst paramBlock = null;
bool result = PowerShellParseUtilities.HasParamBlock(ast, out paramBlock);
Assert.AreEqual <bool>(false, result);
}
public static ScriptParameterResult PromptForScriptParameterValues(ParamBlockAst paramBlock)
{
string scriptArgs;
if (ShowParameterEditor(paramBlock, out scriptArgs) == true)
{
return(new ScriptParameterResult(scriptArgs, true));
}
return(new ScriptParameterResult(null, false));
}
public static ParamBlockAst Update(
this ParamBlockAst ast,
IEnumerable <ParameterAst> parameters = null,
IEnumerable <AttributeAst> attributes = null)
{
return(new ParamBlockAst(
ast.Extent,
attributes?.CloneAll() ?? ast.Attributes?.CloneAll(),
parameters?.CloneAll() ?? ast.Parameters?.CloneAll()));
}
public override ParamBlockAst VisitParamBlock(ParamBlockAst paramBlockAst)
{
foreach (ParameterAst parameter in paramBlockAst.Parameters)
{
_parameters.Add(parameter.Name.VariablePath.UserPath, _parametersIndex);
_parametersIndex++;
}
return(null);
}
public void ParamBlockWithOneParameterWithDefaultIntegerValueTest()
{
ParamBlockAst result = ParseInput("param($first = 2)")
.ParamBlock;
ParameterAst parameter = result.Parameters.FirstOrDefault();
var constantValue = (ConstantExpressionAst)parameter.DefaultValue;
Assert.AreEqual(2, constantValue.Value);
}
public void ParamBlockWithOneParameterTest()
{
ParamBlockAst result = ParseInput("param($path)")
.ParamBlock;
ParameterAst parameter = result.Parameters.FirstOrDefault();
Assert.AreEqual(1, result.Parameters.Count);
Assert.AreEqual("path", parameter.Name.VariablePath.UserPath);
}
public override void Execute(object sender, EventArgs args)
{
ParamBlockAst scriptParameters = ParameterEditorHelper.GetScriptParameters(_adaptersFactory, _textManager);
ScriptArgs = ParameterEditorHelper.PromptForScriptParameterValues(scriptParameters);
if (ScriptArgs.ShouldExecute)
{
base.Execute(sender, args);
}
}
private ParamBlockAst GenerateParamBlockAst(string script)
{
var ast = GenerateAst(script);
ParamBlockAst paramBlock = null;
if (PowerShellParseUtilities.HasParamBlock(ast, out paramBlock))
{
return(paramBlock);
}
return(null);
}
public void ParamBlockWithTwoParametersTest()
{
ParamBlockAst result = ParseInput("param($first, $second)")
.ParamBlock;
ParameterAst firstParameter = result.Parameters.FirstOrDefault();
ParameterAst secondParameter = result.Parameters.LastOrDefault();
Assert.AreEqual(2, result.Parameters.Count);
Assert.AreEqual("first", firstParameter.Name.VariablePath.UserPath);
Assert.AreEqual("second", secondParameter.Name.VariablePath.UserPath);
}
public System.Object VisitScriptBlock(System.Management.Automation.Language.ScriptBlockAst scriptBlockAst)
{
IScriptExtent mappedExtent = MapExtent(scriptBlockAst.Extent);
ParamBlockAst mappedParamBlock = scriptBlockAst.ParamBlock == null ? null : (ParamBlockAst)VisitParamBlock(scriptBlockAst.ParamBlock);
NamedBlockAst mappedBeginBlock = scriptBlockAst.BeginBlock == null ? null : (NamedBlockAst)VisitNamedBlock(scriptBlockAst.BeginBlock);
NamedBlockAst mappedProcessBlock = scriptBlockAst.ProcessBlock == null ? null : (NamedBlockAst)VisitNamedBlock(scriptBlockAst.ProcessBlock);
NamedBlockAst mappedEndBlock = scriptBlockAst.EndBlock == null ? null : (NamedBlockAst)VisitNamedBlock(scriptBlockAst.EndBlock);
NamedBlockAst mappedDynamicParamBlock = scriptBlockAst.DynamicParamBlock == null ? null : (NamedBlockAst)VisitNamedBlock(scriptBlockAst.DynamicParamBlock);
return(new ScriptBlockAst(mappedExtent, mappedParamBlock, mappedBeginBlock, mappedProcessBlock, mappedEndBlock, mappedDynamicParamBlock));
}
private static CorrectionExtent GetCorrectionToAddAttribute(ParamBlockAst paramBlockAst)
{
return(new CorrectionExtent(
paramBlockAst.Extent.StartLineNumber,
paramBlockAst.Extent.StartLineNumber,
1,
1,
new String[] {
new String(whitespace, paramBlockAst.Extent.StartColumnNumber - 1)
+ "[CmdletBinding(SupportsShouldProcess)]",
String.Empty
},
null,
null));
}
private static bool?ShowParameterEditor(ParamBlockAst paramBlockAst, out string scriptArgs)
{
scriptArgs = String.Empty;
var model = PowerShellParseUtilities.ParseParameters(paramBlockAst);
var viewModel = new ParameterEditorViewModel(model);
var view = new ParameterEditorView(viewModel);
bool?wasOkClicked = view.ShowModal();
if (wasOkClicked != true)
{
return(wasOkClicked);
}
scriptArgs = GenerateScripArgsFromModel(model);
return(wasOkClicked);
}
/// <summary>
/// Get the CmdletBinding attribute ast
/// </summary>
/// <param name="attributeAsts"></param>
/// <returns>Returns CmdletBinding attribute ast if it exists, otherwise returns null</returns>
public static AttributeAst GetCmdletBindingAttributeAst(this ParamBlockAst paramBlockAst)
{
var attributeAsts = paramBlockAst.Attributes;
if (attributeAsts == null)
{
return(null);
}
foreach (var attributeAst in attributeAsts)
{
if (attributeAst != null && attributeAst.IsCmdletBindingAttributeAst())
{
return(attributeAst);
}
}
return(null);
}
/// <summary>
/// Get the parameter Asts from a function definition Ast.
///
/// If not parameters are found, return null.
/// </summary>
/// <param name="paramBlockAst">If a parameter block is present, set this argument's value to the parameter block.</param>
/// <returns></returns>
public static IEnumerable <ParameterAst> GetParameterAsts(
this FunctionDefinitionAst functionDefinitionAst,
out ParamBlockAst paramBlockAst)
{
// todo instead of returning null return an empty enumerator if no parameter is found
// this removes the burden from the user for null checking.
paramBlockAst = null;
if (functionDefinitionAst.Parameters != null)
{
return(functionDefinitionAst.Parameters);
}
else if (functionDefinitionAst.Body.ParamBlock?.Parameters != null)
{
paramBlockAst = functionDefinitionAst.Body.ParamBlock;
return(functionDefinitionAst.Body.ParamBlock.Parameters);
}
return(null);
}
public static ParamBlockAst GetScriptParameters(IVsEditorAdaptersFactoryService adaptersFactory, IVsTextManager textManager)
{
IVsTextView vsTextView;
ParamBlockAst paramBlock = null;
//Returns the active or previously active view.
//
// Parameters:
// fMustHaveFocus:
// [in] If true, then the current UI active view is returned. If false, then
// the last active view is returned, regardless of whether this view is currently
// UI active.
//
// pBuffer:
// [in] Pass null for pBuffer to get the previously active code view, regardless
// of the text buffer that it was associated with. If you pass in a valid pointer
// to a buffer, then you are returned the last active view for that particular
// buffer.
//
// ppView:
// [out] Pointer to the Microsoft.VisualStudio.TextManager.Interop.IVsTextView
// interface.
textManager.GetActiveView(1, null, out vsTextView);
if (vsTextView == null)
{
return(null);
}
IVsTextLines textLines;
vsTextView.GetBuffer(out textLines);
ITextBuffer textBuffer = adaptersFactory.GetDataBuffer(textLines as IVsTextBuffer);
Ast scriptAst;
if (!textBuffer.Properties.TryGetProperty <Ast>(BufferProperties.Ast, out scriptAst))
{
return(null);
}
PowerShellParseUtilities.HasParamBlock(scriptAst, out paramBlock);
return(paramBlock);
}
public static ScriptBlockAst Update(
this ScriptBlockAst ast,
IEnumerable <UsingStatementAst> usingStatements = null,
IEnumerable <AttributeAst> attributes = null,
ParamBlockAst paramBlock = null,
NamedBlockAst beginBlock = null,
NamedBlockAst processBlock = null,
NamedBlockAst endBlock = null,
NamedBlockAst dynamicParamBlock = null)
{
return(new ScriptBlockAst(
ast.Extent,
usingStatements?.CloneAll() ?? ast.UsingStatements?.CloneAll(),
attributes?.CloneAll() ?? ast.Attributes?.CloneAll(),
paramBlock?.Clone() ?? ast.ParamBlock?.Clone(),
beginBlock?.Clone() ?? ast.BeginBlock?.Clone(),
processBlock?.Clone() ?? ast.ProcessBlock?.Clone(),
endBlock?.Clone() ?? ast.EndBlock?.Clone(),
dynamicParamBlock?.Clone() ?? ast.DynamicParamBlock?.Clone()));
}
public static ScriptBlockAst Update(
this ScriptBlockAst ast,
IEnumerable <StatementAst> statements,
IEnumerable <UsingStatementAst> usingStatements = null,
IEnumerable <AttributeAst> attributes = null,
ParamBlockAst paramBlock = null,
bool?isFilter = null,
bool?isConfiguration = null)
{
return(new ScriptBlockAst(
ast.Extent,
usingStatements?.CloneAll() ?? ast.UsingStatements?.CloneAll(),
attributes?.CloneAll() ?? ast.Attributes?.CloneAll(),
paramBlock?.Clone() ?? ast.ParamBlock?.Clone(),
new StatementBlockAst(
ast.EndBlock.Extent,
statements?.CloneAll() ?? ast.EndBlock?.Statements?.CloneAll(),
ast.EndBlock?.Traps?.CloneAll()),
isFilter: false,
isConfiguration: false));
}
public void ShouldParseParametersCorrectly()
{
ParamBlockAst paramBlock = GenerateParamBlockAst(scriptWithParameters);
var model = PowerShellParseUtilities.ParseParameters(paramBlock);
var expectedModel = new ParameterEditorModel(
new ObservableCollection <ScriptParameterViewModel>()
{
new ScriptParameterViewModel(new ScriptParameter()
{
Name = "StringType",
Type = DataTypeConstants.StringType,
DefaultValue = null
}),
new ScriptParameterViewModel(new ScriptParameter()
{
Name = "CharType",
Type = DataTypeConstants.CharType,
DefaultValue = null
}),
new ScriptParameterViewModel(new ScriptParameter()
{
Name = "ByteType",
Type = DataTypeConstants.ByteType,
DefaultValue = null
}),
new ScriptParameterViewModel(new ScriptParameter()
{
Name = "IntType",
Type = DataTypeConstants.Int32Type,
DefaultValue = null
})
},
PowerShellParseUtilities.GenerateCommonParameters());
Assert.AreEqual <bool>(true, CompareParameterEditorModels(expectedModel, model));
}
public override AstVisitAction VisitParamBlock(ParamBlockAst paramBlockAst)
{
Console.WriteLine("Visited an ParamBlockAst.");
Console.WriteLine(" " + paramBlockAst.ToString().Replace(Environment.NewLine, Environment.NewLine + " "));
return(AstVisitAction.Continue);
}
public object VisitParamBlock(ParamBlockAst paramBlockAst)
{
return(false);
}
/// <summary>
/// Try to parse a Param block and form them into a model containing parameters related data.
/// </summary>
/// <param name="paramBlockAst">The targeting Param block.</param>
/// <returns>A model containing parameters related data.</returns>
public static ParameterEditorModel ParseParameters(ParamBlockAst paramBlockAst)
{
ObservableCollection <ScriptParameterViewModel> scriptParameters = new ObservableCollection <ScriptParameterViewModel>();
IDictionary <string, IList <ScriptParameterViewModel> > parameterSetToParametersDict = new Dictionary <string, IList <ScriptParameterViewModel> >();
IList <string> parameterSetNames = new List <string>();
if (paramBlockAst != null)
{
// First, filter all parameter types not supported yet.
var parametersList = paramBlockAst.Parameters.
Where(p => !DataTypeConstants.UnsupportedDataTypes.Contains(p.StaticType.FullName)).
ToList();
foreach (var p in parametersList)
{
HashSet <object> allowedValues = new HashSet <object>();
bool isParameterSetDefined = false;
string parameterSetName = null;
bool isMandatory = false;
foreach (var a in p.Attributes)
{
// Find if there defines attribute ValidateSet
if (a.TypeName.FullName.Equals(ValidateSetTypeName, StringComparison.OrdinalIgnoreCase))
{
foreach (StringConstantExpressionAst pa in ((AttributeAst)a).PositionalArguments)
{
allowedValues.Add(pa.Value);
}
}
// Find if there defines attribute ParameterNameSet
// Find if there defines attribute Mandatory
if (a is AttributeAst)
{
foreach (var arg in ((AttributeAst)a).NamedArguments)
{
if (!isParameterSetDefined)
{
isParameterSetDefined = arg.ArgumentName.Equals(ParameterSetArgumentName, StringComparison.OrdinalIgnoreCase);
if (isParameterSetDefined)
{
parameterSetName = ((StringConstantExpressionAst)arg.Argument).Value;
}
}
if (!isMandatory)
{
bool isMandatoryDefined = arg.ArgumentName.Equals(MandatoryArgumentName, StringComparison.OrdinalIgnoreCase);
if (isMandatoryDefined)
{
if (arg.Argument is VariableExpressionAst)
{
isMandatory = ((VariableExpressionAst)arg.Argument).VariablePath.UserPath.Equals("true", StringComparison.OrdinalIgnoreCase);
}
if (arg.Argument is ConstantExpressionAst)
{
isMandatory = Convert.ToBoolean(((ConstantExpressionAst)arg.Argument).Value);
}
}
}
}
}
}
// Get parameter type
string type = p.StaticType.FullName;
if (type.EndsWith(DataTypeConstants.ArrayType, StringComparison.OrdinalIgnoreCase))
{
type = DataTypeConstants.ArrayType;
}
// Get parameter name
string name = p.Name.VariablePath.UserPath;
// Get paramter default value, null it is if there is none specified
object defaultValue = null;
if (p.DefaultValue != null)
{
if (p.DefaultValue is ConstantExpressionAst)
{
defaultValue = ((ConstantExpressionAst)p.DefaultValue).Value;
}
else if (p.DefaultValue is VariableExpressionAst)
{
defaultValue = ((VariableExpressionAst)p.DefaultValue).VariablePath.UserPath;
}
}
// Construct a ScriptParameterViewModel based on whether a parameter set is found
ScriptParameterViewModel newViewModel = null;
if (isParameterSetDefined && parameterSetName != null)
{
newViewModel = new ScriptParameterViewModel(new ScriptParameter(name, type, defaultValue, allowedValues, parameterSetName, isMandatory));
IList <ScriptParameterViewModel> existingSets;
if (parameterSetToParametersDict.TryGetValue(parameterSetName, out existingSets))
{
existingSets.Add(newViewModel);
}
else
{
parameterSetNames.Add(parameterSetName);
parameterSetToParametersDict.Add(parameterSetName, new List <ScriptParameterViewModel>()
{
newViewModel
});
}
}
else
{
newViewModel = new ScriptParameterViewModel(new ScriptParameter(name, type, defaultValue, allowedValues, isMandatory));
scriptParameters.Add(newViewModel);
}
}
}
// Construct the actual model
ParameterEditorModel model = new ParameterEditorModel(scriptParameters,
GenerateCommonParameters(),
parameterSetToParametersDict.Count > 0 ? parameterSetToParametersDict : null,
parameterSetNames.Count > 0 ? parameterSetNames : null,
parameterSetNames.FirstOrDefault());
return(model);
}
/// <summary>
/// Try to find a Param block on the top level of an AST.
/// </summary>
/// <param name="ast">The targeting AST.</param>
/// <param name="paramBlockAst">Wanted Param block.</param>
/// <returns>True if there is one. Otherwise, false.</returns>
public static bool HasParamBlock(Ast ast, out ParamBlockAst paramBlockAst)
{
paramBlockAst = (ParamBlockAst)ast.Find(p => p is ParamBlockAst, false);
return(paramBlockAst != null);
}
public object VisitScriptBlock(ScriptBlockAst scriptBlockAst)
{
if (scriptBlockAst.ParamBlock != null)
{
return(scriptBlockAst);
}
if (scriptBlockAst.BeginBlock != null)
{
_errorWriter.ReportNotSupported(
scriptBlockAst.BeginBlock.Extent,
nameof(CompilerStrings.BeginBlock),
CompilerStrings.BeginBlock);
return(null);
}
if (scriptBlockAst.ProcessBlock != null)
{
_errorWriter.ReportNotSupported(
scriptBlockAst.ProcessBlock.Extent,
nameof(CompilerStrings.ProcessBlock),
CompilerStrings.ProcessBlock);
return(null);
}
if (scriptBlockAst.EndBlock == null)
{
_errorWriter.ReportMissing(
scriptBlockAst.Extent,
nameof(CompilerStrings.EndBlock),
CompilerStrings.EndBlock);
return(null);
}
var body = scriptBlockAst.EndBlock.Visit(this);
if (_failed)
{
return(scriptBlockAst);
}
_errorWriter.ThrowIfAnyErrors();
var parameters = new ParameterAst[_variables.Count];
for (var i = 0; i < parameters.Length; i++)
{
parameters[i] = new ParameterAst(
_variables[i].Item2.Extent,
(VariableExpressionAst)_variables[i].Item2.Copy(),
new[] { new TypeConstraintAst(_variables[i].Item1.Extent, _variables[i].Item1) },
null);
}
var paramBlock =
new ParamBlockAst(
_paramBlockExtent,
Array.Empty <AttributeAst>(),
parameters);
return(new ScriptBlockAst(
scriptBlockAst.Extent,
paramBlock,
null,
null,
(NamedBlockAst)((Ast)body).Copy(),
null));
}
public object VisitParamBlock(ParamBlockAst paramBlockAst)
{
Console.WriteLine("Visited an ParamBlockAst.");
return(paramBlockAst);
}
