private bool AstAssignsToSameVariable(Ast ast)
{
ParameterAst ast2 = ast as ParameterAst;
if (ast2 != null)
{
return(this.VariablePath.IsUnscopedVariable && ast2.Name.VariablePath.UnqualifiedPath.Equals(this.VariablePath.UnqualifiedPath, StringComparison.OrdinalIgnoreCase));
}
ForEachStatementAst ast3 = ast as ForEachStatementAst;
if (ast3 != null)
{
return(this.VariablePath.IsUnscopedVariable && ast3.Variable.VariablePath.UnqualifiedPath.Equals(this.VariablePath.UnqualifiedPath, StringComparison.OrdinalIgnoreCase));
}
AssignmentStatementAst ast4 = (AssignmentStatementAst)ast;
ExpressionAst left = ast4.Left;
ConvertExpressionAst ast6 = left as ConvertExpressionAst;
if (ast6 != null)
{
left = ast6.Child;
}
VariableExpressionAst ast7 = left as VariableExpressionAst;
if (ast7 == null)
{
return(false);
}
System.Management.Automation.VariablePath variablePath = ast7.VariablePath;
return(variablePath.UserPath.Equals(this.VariablePath.UserPath, StringComparison.OrdinalIgnoreCase) || (this.VariablePath.IsScript && this.VariablePath.UnqualifiedPath.Equals(variablePath.UnqualifiedPath, StringComparison.OrdinalIgnoreCase)));
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
this.CheckAssignmentTarget(assignmentStatementAst.Left, assignmentStatementAst.Operator == TokenKind.Equals, delegate(Ast ast) {
this._parser.ReportError(ast.Extent, ParserStrings.InvalidLeftHandSide, new object[0]);
});
return(AstVisitAction.Continue);
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
if (_symbolTable.IsInMethodScope())
{
var targets = assignmentStatementAst.GetAssignmentTargets().ToArray();
foreach (var expressionAst in targets)
{
var expression = expressionAst;
var variableExpressionAst = expression as VariableExpressionAst;
while (variableExpressionAst == null && expression != null)
{
var convertExpressionAst = expression as ConvertExpressionAst;
if (convertExpressionAst != null)
{
expression = convertExpressionAst.Child;
variableExpressionAst = convertExpressionAst.Child as VariableExpressionAst;
}
else
{
break;
}
}
if (variableExpressionAst != null && variableExpressionAst.VariablePath.IsVariable)
{
var ast = _symbolTable.LookupVariable(variableExpressionAst.VariablePath);
var propertyMember = ast as PropertyMemberAst;
if (propertyMember != null)
{
if (propertyMember.IsStatic)
{
var typeAst = _symbolTable.GetCurrentTypeDefinitionAst();
Diagnostics.Assert(typeAst != null, "Method scopes can exist only inside type definitions.");
string typeString = string.Format(CultureInfo.InvariantCulture, "[{0}]::", typeAst.Name);
_parser.ReportError(variableExpressionAst.Extent,
nameof(ParserStrings.MissingTypeInStaticPropertyAssignment),
ParserStrings.MissingTypeInStaticPropertyAssignment,
typeString,
propertyMember.Name);
}
else
{
_parser.ReportError(variableExpressionAst.Extent,
nameof(ParserStrings.MissingThis),
ParserStrings.MissingThis,
"$this.",
propertyMember.Name);
}
}
}
}
// TODO: static look for alias and function.
}
return(AstVisitAction.Continue);
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
var variableExpressionAst = assignmentStatementAst.Left as VariableExpressionAst;
if (variableExpressionAst == null) throw new NotImplementedException(assignmentStatementAst.ToString());
var variable = this._context.SessionState.SessionStateGlobal.SetVariable(variableExpressionAst.VariablePath.UserPath, EvaluateAst(assignmentStatementAst.Right));
this._pipelineCommandRuntime.WriteObject(variable);
return AstVisitAction.SkipChildren;
}
public System.Object VisitAssignmentStatement(System.Management.Automation.Language.AssignmentStatementAst assignmentStatementAst)
{
IScriptExtent mappedExtent = MapExtent(assignmentStatementAst.Extent);
IScriptExtent mappedErrorExtent = MapExtent(assignmentStatementAst.ErrorPosition);
ExpressionAst mappedLeft = _VisitExpression(assignmentStatementAst.Left);
StatementAst mappedRight = _VisitStatement(assignmentStatementAst.Right);
return(new AssignmentStatementAst(mappedExtent, mappedLeft, assignmentStatementAst.Operator, mappedRight, mappedErrorExtent));
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst ast)
{
if (!used)
{
if (ast.Operator == TokenKind.Equals && ast.Left is VariableExpressionAst)
{
if (((VariableExpressionAst) ast.Left).VariablePath.UserPath == varName)
{
LastAssignmentStatementAst = ast;
}
}
}
return AstVisitAction.Continue;
}
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
assignmentStatementAst.Right.Accept(this);
foreach (ExpressionAst ast in GetAssignmentTargets(assignmentStatementAst.Left))
{
bool flag = false;
int num = 0;
ExpressionAst child = ast;
while (child is AttributedExpressionAst)
{
num++;
if (!(child is ConvertExpressionAst))
{
flag = true;
}
child = ((AttributedExpressionAst)child).Child;
}
if (child is VariableExpressionAst)
{
if (flag || (num > 1))
{
VariablePath variablePath = ((VariableExpressionAst)child).VariablePath;
if (variablePath.IsAnyLocal())
{
VariableAnalysisDetails details = this._variables[GetUnaliasedVariableName(variablePath)];
details.LocalTupleIndex = -2;
}
}
else
{
this._currentBlock.AddAst(new AssignmentTarget(ast));
}
}
else
{
ast.Accept(this);
}
}
return(null);
}
/// <summary/>
public virtual object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst) { return null; }
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
return(false);
}
private Expression CompileAssignment(AssignmentStatementAst assignmentStatementAst, MergeRedirectExprs generateRedirectExprs = null)
{
ArrayLiteralAst left = assignmentStatementAst.Left as ArrayLiteralAst;
if (assignmentStatementAst.Left is ParenExpressionAst)
{
left = ((ParenExpressionAst) assignmentStatementAst.Left).Pipeline.GetPureExpression() as ArrayLiteralAst;
}
Expression expression = this.CaptureStatementResults(assignmentStatementAst.Right, (left != null) ? CaptureAstContext.Enumerable : CaptureAstContext.Assignment, generateRedirectExprs);
if (left != null)
{
expression = Expression.Dynamic(PSArrayAssignmentRHSBinder.Get(left.Elements.Count), typeof(IList), expression);
}
List<Expression> expressions = new List<Expression> {
this.UpdatePosition(assignmentStatementAst),
this.ReduceAssignment((ISupportsAssignment) assignmentStatementAst.Left, assignmentStatementAst.Operator, expression)
};
return Expression.Block(expressions);
}
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
return false;
}
public AssignmentTarget(AssignmentStatementAst ast)
{
this._targetAst = ast.Left;
this._rightAst = ast.Right;
if (_rightAst != null)
{
Constant = Undetermined.UndeterminedConstant;
Type = typeof(Undetermined);
}
CommandExpressionAst cmExAst = _rightAst as CommandExpressionAst;
if (cmExAst != null)
{
ExpressionAst exprAst = cmExAst.Expression;
Type = exprAst.StaticType;
if (exprAst is ConvertExpressionAst)
{
ConvertExpressionAst convertAst = exprAst as ConvertExpressionAst;
Type = DeepestRelatedDerivedClass(convertAst.StaticType, Type);
if (convertAst.Child is ConstantExpressionAst)
{
Constant = (convertAst.Child as ConstantExpressionAst).Value;
}
}
else if (exprAst is BinaryExpressionAst)
{
BinaryExpressionAst binAst = exprAst as BinaryExpressionAst;
if (binAst != null && binAst.Operator == TokenKind.As && binAst.Right is TypeExpressionAst)
{
Type = DeepestRelatedDerivedClass((binAst.Right as TypeExpressionAst).TypeName.GetReflectionType(),
binAst.Left.StaticType);
if (binAst.Left is ConstantExpressionAst)
{
Constant = (binAst.Left as ConstantExpressionAst).Value;
}
else if (binAst.Left is VariableExpressionAst)
{
_rightHandSideVariable = new VariableTarget(binAst.Left as VariableExpressionAst);
}
}
}
else if (exprAst is ConstantExpressionAst)
{
Constant = (cmExAst.Expression as ConstantExpressionAst).Value;
}
else if (exprAst is VariableExpressionAst)
{
_rightHandSideVariable = new VariableTarget(cmExAst.Expression as VariableExpressionAst);
if (String.Equals((exprAst as VariableExpressionAst).VariablePath.UserPath, "this", StringComparison.OrdinalIgnoreCase))
{
Constant = SpecialVars.ThisVariable;
}
}
//Store the type info for variable assignment from .Net type
else if (exprAst is MemberExpressionAst)
{
Type = DeepestRelatedDerivedClass(Type, GetTypeFromMemberExpressionAst(exprAst as MemberExpressionAst));
}
}
// We'll consider case where there is only 1 pipeline element for now
else if (_rightAst is PipelineAst && (_rightAst as PipelineAst).PipelineElements.Count == 1)
{
#region Process New-Object command
CommandAst cmdAst = (_rightAst as PipelineAst).PipelineElements[0] as CommandAst;
if (cmdAst != null && cmdAst.CommandElements.Count > 1)
{
StringConstantExpressionAst stringAst = cmdAst.CommandElements[0] as StringConstantExpressionAst;
if (stringAst != null && String.Equals(stringAst.Value, "new-object", StringComparison.OrdinalIgnoreCase))
{
CommandParameterAst secondElement = cmdAst.CommandElements[1] as CommandParameterAst;
StringConstantExpressionAst typeName = null;
if (secondElement != null)
{
if (String.Equals(secondElement.ParameterName, "TypeName", StringComparison.OrdinalIgnoreCase))
{
if (secondElement.Argument != null)
{
typeName = secondElement.Argument as StringConstantExpressionAst;
}
else
{
if (cmdAst.CommandElements.Count > 2)
{
typeName = cmdAst.CommandElements[2] as StringConstantExpressionAst;
}
}
}
}
else
{
typeName = cmdAst.CommandElements[1] as StringConstantExpressionAst;
}
if (typeName != null)
{
Type = System.Type.GetType(typeName.Value) ?? typeof(object);
}
}
}
#endregion
}
SetVariableName();
}
/// <summary/>
public virtual object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
return _decorated.VisitAssignmentStatement(assignmentStatementAst);
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst ast)
{
return this.Check(ast);
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
ExpressionAst expressionAst = assignmentStatementAst.Left;
var isEquals = assignmentStatementAst.Operator == TokenKind.Equals;
var isVariableAssignment = expressionAst is VariableExpressionAst;
var rightValueRes = EvaluateAst(assignmentStatementAst.Right);
// a little ugly, but we need to stay dynamic. It's crucial that a psobject isn't unpacked if it's simply
// assigned to a variable, otherwise we could lose some important properties
// TODO: this is more like a workaround. PSObject should implement implicit casting,
// then no checks and .BaseObject calls should be necessary anymore
bool unpackPSObject = !isEquals || !isVariableAssignment;
dynamic rightValue = (rightValueRes is PSObject && unpackPSObject) ?
((PSObject)rightValueRes).BaseObject : rightValueRes;
object newValue = rightValue;
dynamic currentValueRes = isEquals ? null : EvaluateAst(assignmentStatementAst.Left);
dynamic currentValue = (currentValueRes != null && currentValueRes is PSObject && unpackPSObject) ?
((PSObject)currentValueRes).BaseObject : currentValueRes;
if (assignmentStatementAst.Operator == TokenKind.Equals)
{
newValue = rightValue;
}
else if (assignmentStatementAst.Operator == TokenKind.PlusEquals)
{
newValue = currentValue + rightValue;
}
else if (assignmentStatementAst.Operator == TokenKind.MinusEquals)
{
newValue = currentValue - rightValue;
}
else if (assignmentStatementAst.Operator == TokenKind.MultiplyEquals)
{
newValue = currentValue * rightValue;
}
else if (assignmentStatementAst.Operator == TokenKind.DivideEquals)
{
newValue = currentValue / rightValue;
}
else if (assignmentStatementAst.Operator == TokenKind.RemainderEquals)
{
newValue = currentValue % rightValue;
}
else
{
throw new NotImplementedException("Unsupported operator: " + assignmentStatementAst.Operator.ToString());
}
if (this._writeSideEffectsToPipeline)
{
this._pipelineCommandRuntime.WriteObject(newValue);
}
if (isVariableAssignment)
{
_context.SetVariable(((VariableExpressionAst) expressionAst).VariablePath.UserPath, newValue);
}
else if (expressionAst is MemberExpressionAst)
{
SetMemberExpressionValue((MemberExpressionAst) expressionAst, newValue);
}
else
{
var msg = String.Format("The expression type '{0}' is currently not supported for assignments",
expressionAst.GetType().ToString());
throw new NotImplementedException(msg);
}
return AstVisitAction.SkipChildren;
}
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst) { throw new UnexpectedElementException(); }
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
this.ReportError(assignmentStatementAst, () => ParserStrings.AssignmentStatementNotSupportedInDataSection, new object[0]);
return(AstVisitAction.Continue);
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
// Make sure LHS is something that can be assigned to.
CheckAssignmentTarget(assignmentStatementAst.Left, assignmentStatementAst.Operator == TokenKind.Equals,
ast => _parser.ReportError(ast.Extent, () => ParserStrings.InvalidLeftHandSide));
return AstVisitAction.Continue;
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
// Assignments are never allowed.
ReportError(assignmentStatementAst, () => ParserStrings.AssignmentStatementNotSupportedInDataSection);
return AstVisitAction.Continue;
}
/// <summary/> public virtual AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst) => DefaultVisit(assignmentStatementAst);
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst ast) { return CheckParent(ast); }
// Capture modules that add themselves to the path (so they generally package their functionality
// as loose PS1 files)
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
// $env:PATH += "";$psScriptRoot""
if (String.Equals("$env:PATH", assignmentStatementAst.Left.ToString(), StringComparison.OrdinalIgnoreCase) &&
Regex.IsMatch(assignmentStatementAst.Right.ToString(), "\\$psScriptRoot", RegexOptions.IgnoreCase))
{
ModuleIntrinsics.Tracer.WriteLine("Module adds itself to the path.");
AddsSelfToPath = true;
}
return AstVisitAction.SkipChildren;
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
this.ReportError(assignmentStatementAst, () => ParserStrings.AssignmentStatementNotSupportedInDataSection, new object[0]);
return AstVisitAction.Continue;
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
var rightValue = EvaluateAst(assignmentStatementAst.Right);
object newValue = rightValue;
ExpressionAst expressionAst = assignmentStatementAst.Left;
var variableExpressionAst = expressionAst as VariableExpressionAst;
if (variableExpressionAst == null) throw new NotImplementedException(expressionAst.ToString());
if (assignmentStatementAst.Operator == TokenKind.Equals)
{
_context.SetVariable(variableExpressionAst.VariablePath.UserPath, rightValue);
}
else if (assignmentStatementAst.Operator == TokenKind.PlusEquals)
{
dynamic currentValue = _context.GetVariableValue(variableExpressionAst.VariablePath.UserPath);
dynamic assignmentValue = ((PSObject)rightValue).BaseObject;
newValue = currentValue + assignmentValue;
_context.SetVariable(variableExpressionAst.VariablePath.UserPath, newValue);
}
else if (assignmentStatementAst.Operator == TokenKind.MinusEquals)
{
dynamic currentValue = _context.GetVariableValue(variableExpressionAst.VariablePath.UserPath);
dynamic assignmentValue = ((PSObject)rightValue).BaseObject;
newValue = currentValue - assignmentValue;
_context.SetVariable(variableExpressionAst.VariablePath.UserPath, newValue);
}
else if (assignmentStatementAst.Operator == TokenKind.MultiplyEquals)
{
dynamic currentValue = _context.GetVariableValue(variableExpressionAst.VariablePath.UserPath);
dynamic assignmentValue = ((PSObject)rightValue).BaseObject;
newValue = currentValue * assignmentValue;
_context.SetVariable(variableExpressionAst.VariablePath.UserPath, newValue);
}
else if (assignmentStatementAst.Operator == TokenKind.DivideEquals)
{
dynamic currentValue = _context.GetVariableValue(variableExpressionAst.VariablePath.UserPath);
dynamic assignmentValue = ((PSObject)rightValue).BaseObject;
newValue = currentValue / assignmentValue;
_context.SetVariable(variableExpressionAst.VariablePath.UserPath, newValue);
}
else if (assignmentStatementAst.Operator == TokenKind.RemainderEquals)
{
dynamic currentValue = _context.GetVariableValue(variableExpressionAst.VariablePath.UserPath);
dynamic assignmentValue = ((PSObject)rightValue).BaseObject;
newValue = currentValue % assignmentValue;
_context.SetVariable(variableExpressionAst.VariablePath.UserPath, newValue);
}
if (this._writeSideEffectsToPipeline) this._pipelineCommandRuntime.WriteObject(newValue);
return AstVisitAction.SkipChildren;
}
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
assignmentStatementAst.Right.Accept(this);
foreach (ExpressionAst ast in GetAssignmentTargets(assignmentStatementAst.Left))
{
bool flag = false;
int num = 0;
ExpressionAst child = ast;
while (child is AttributedExpressionAst)
{
num++;
if (!(child is ConvertExpressionAst))
{
flag = true;
}
child = ((AttributedExpressionAst) child).Child;
}
if (child is VariableExpressionAst)
{
if (flag || (num > 1))
{
VariablePath variablePath = ((VariableExpressionAst) child).VariablePath;
if (variablePath.IsAnyLocal())
{
VariableAnalysisDetails details = this._variables[GetUnaliasedVariableName(variablePath)];
details.LocalTupleIndex = -2;
}
}
else
{
this._currentBlock.AddAst(new AssignmentTarget(ast));
}
}
else
{
ast.Accept(this);
}
}
return null;
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
if (_symbolTable.IsInMethodScope())
{
var targets = assignmentStatementAst.GetAssignmentTargets().ToArray();
foreach (var expressionAst in targets)
{
var expression = expressionAst;
var variableExpressionAst = expression as VariableExpressionAst;
while (variableExpressionAst == null && expression != null)
{
var convertExpressionAst = expression as ConvertExpressionAst;
if (convertExpressionAst != null)
{
expression = convertExpressionAst.Child;
variableExpressionAst = convertExpressionAst.Child as VariableExpressionAst;
}
else
{
break;
}
}
if (variableExpressionAst != null && variableExpressionAst.VariablePath.IsVariable)
{
var ast = _symbolTable.LookupVariable(variableExpressionAst.VariablePath);
var propertyMember = ast as PropertyMemberAst;
if (propertyMember != null)
{
if (propertyMember.IsStatic)
{
var typeAst = _symbolTable.GetCurrentTypeDefinitionAst();
Diagnostics.Assert(typeAst != null, "Method scopes can exist only inside type definitions.");
_parser.ReportError(variableExpressionAst.Extent, () => ParserStrings.MissingTypeInStaticPropertyAssignment,
String.Format(CultureInfo.InvariantCulture, "[{0}]::", typeAst.Name), propertyMember.Name);
}
else
{
_parser.ReportError(variableExpressionAst.Extent, () => ParserStrings.MissingThis, "$this.", propertyMember.Name);
}
}
}
}
// TODO: static look for alias and function.
}
return AstVisitAction.Continue;
}
/// <summary>
/// Visit assignmentstatement
/// </summary>
/// <param name="assignmentStatementAst"></param>
/// <returns></returns>
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
if (assignmentStatementAst == null) return null;
assignmentStatementAst.Right.Visit(this.Decorator);
return null;
}
internal override IEnumerable <PSTypeName> GetInferredType(CompletionContext context)
{
if (this.VariablePath.IsVariable)
{
Ast parent = this.Parent;
if (this.VariablePath.IsUnqualified && (this.VariablePath.UserPath.Equals("_", StringComparison.Ordinal) || this.VariablePath.UserPath.Equals("PSItem", StringComparison.OrdinalIgnoreCase)))
{
while (parent != null)
{
if (parent is ScriptBlockExpressionAst)
{
break;
}
parent = parent.Parent;
}
if (parent != null)
{
if ((parent.Parent is CommandExpressionAst) && (parent.Parent.Parent is PipelineAst))
{
if (parent.Parent.Parent.Parent is HashtableAst)
{
parent = parent.Parent.Parent.Parent;
}
else if ((parent.Parent.Parent.Parent is ArrayLiteralAst) && (parent.Parent.Parent.Parent.Parent is HashtableAst))
{
parent = parent.Parent.Parent.Parent.Parent;
}
}
if (parent.Parent is CommandParameterAst)
{
parent = parent.Parent;
}
CommandAst iteratorVariable1 = parent.Parent as CommandAst;
if (iteratorVariable1 != null)
{
PipelineAst iteratorVariable2 = (PipelineAst)iteratorVariable1.Parent;
int iteratorVariable3 = iteratorVariable2.PipelineElements.IndexOf(iteratorVariable1) - 1;
if (iteratorVariable3 >= 0)
{
foreach (PSTypeName iteratorVariable4 in iteratorVariable2.PipelineElements[0].GetInferredType(context))
{
if (iteratorVariable4.Type != null)
{
if (iteratorVariable4.Type.IsArray)
{
yield return(new PSTypeName(iteratorVariable4.Type.GetElementType()));
continue;
}
if (typeof(IEnumerable).IsAssignableFrom(iteratorVariable4.Type))
{
IEnumerable <Type> iteratorVariable5 = from t in iteratorVariable4.Type.GetInterfaces()
where t.IsGenericType && t.GetGenericTypeDefinition().Equals(typeof(IEnumerable <>))
select t;
foreach (Type iteratorVariable6 in iteratorVariable5)
{
yield return(new PSTypeName(iteratorVariable6.GetGenericArguments()[0]));
}
continue;
}
}
yield return(iteratorVariable4);
}
}
goto Label_0833;
}
}
}
if (this.VariablePath.IsUnqualified)
{
for (int i = 0; i < SpecialVariables.AutomaticVariables.Length; i++)
{
if (this.VariablePath.UserPath.Equals(SpecialVariables.AutomaticVariables[i], StringComparison.OrdinalIgnoreCase))
{
Type type = SpecialVariables.AutomaticVariableTypes[i];
if (!type.Equals(typeof(object)))
{
yield return(new PSTypeName(type));
break;
}
break;
}
}
}
while (parent.Parent != null)
{
parent = parent.Parent;
}
if (parent.Parent is FunctionDefinitionAst)
{
parent = parent.Parent;
}
IEnumerable <Ast> source = AstSearcher.FindAll(parent, ast => (((ast is ParameterAst) || (ast is AssignmentStatementAst)) || (ast is ForEachStatementAst)) && this.AstAssignsToSameVariable(ast), true);
ParameterAst iteratorVariable10 = source.OfType <ParameterAst>().FirstOrDefault <ParameterAst>();
if (iteratorVariable10 != null)
{
PSTypeName[] iteratorVariable11 = iteratorVariable10.GetInferredType(context).ToArray <PSTypeName>();
if (iteratorVariable11.Length > 0)
{
foreach (PSTypeName iteratorVariable12 in iteratorVariable11)
{
yield return(iteratorVariable12);
}
goto Label_0833;
}
}
AssignmentStatementAst[] iteratorVariable13 = source.OfType <AssignmentStatementAst>().ToArray <AssignmentStatementAst>();
foreach (AssignmentStatementAst iteratorVariable14 in iteratorVariable13)
{
ConvertExpressionAst left = iteratorVariable14.Left as ConvertExpressionAst;
if ((left != null) && (left.StaticType != null))
{
yield return(new PSTypeName(left.StaticType));
goto Label_0833;
}
}
ForEachStatementAst iteratorVariable16 = source.OfType <ForEachStatementAst>().FirstOrDefault <ForEachStatementAst>();
if (iteratorVariable16 != null)
{
foreach (PSTypeName iteratorVariable17 in iteratorVariable16.Condition.GetInferredType(context))
{
yield return(iteratorVariable17);
}
}
else
{
int startOffset = this.Extent.StartOffset;
int iteratorVariable19 = 0x7fffffff;
AssignmentStatementAst iteratorVariable20 = null;
foreach (AssignmentStatementAst ast in iteratorVariable13)
{
int endOffset = ast.Extent.EndOffset;
if ((endOffset < startOffset) && ((startOffset - endOffset) < iteratorVariable19))
{
iteratorVariable19 = startOffset - endOffset;
iteratorVariable20 = ast;
}
}
if (iteratorVariable20 != null)
{
foreach (PSTypeName iteratorVariable21 in iteratorVariable20.Right.GetInferredType(context))
{
yield return(iteratorVariable21);
}
}
}
}
Label_0833:
yield break;
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
// first check if it's a assignable expression, fail otherwise. later on we also need support for
// arrays of variables
ExpressionAst expressionAst = assignmentStatementAst.Left;
if (!SettableExpression.SupportedExpressions.Contains(expressionAst.GetType()))
{
var msg = String.Format("The expression type '{0}' is currently not supported for assignments",
expressionAst.GetType().ToString());
throw new NotImplementedException(msg);
}
var assignableExpression = SettableExpression.Create(expressionAst, this);
var rightValue = EvaluateAst(assignmentStatementAst.Right);
object newValue = rightValue;
bool isSimpleAssignment = assignmentStatementAst.Operator == TokenKind.Equals;
// safe the effort to get the value of the left side if it's replaced anyway
dynamic currentValue = isSimpleAssignment ? null : assignableExpression.GetValue();
// compute the new value
if (isSimpleAssignment)
{
newValue = rightValue;
}
else if (assignmentStatementAst.Operator == TokenKind.PlusEquals)
{
newValue = ArithmeticOperations.Add(currentValue, rightValue);
}
else if (assignmentStatementAst.Operator == TokenKind.MinusEquals)
{
newValue = ArithmeticOperations.Subtract(currentValue, rightValue);
}
else if (assignmentStatementAst.Operator == TokenKind.MultiplyEquals)
{
newValue = ArithmeticOperations.Multiply(currentValue, rightValue);
}
else if (assignmentStatementAst.Operator == TokenKind.DivideEquals)
{
newValue = ArithmeticOperations.Divide(currentValue, rightValue);
}
else if (assignmentStatementAst.Operator == TokenKind.RemainderEquals)
{
newValue = ArithmeticOperations.Remainder(currentValue, rightValue);
}
else
{
throw new NotImplementedException("Unsupported operator: " + assignmentStatementAst.Operator.ToString());
}
if (this._writeSideEffectsToPipeline)
{
this._pipelineCommandRuntime.WriteObject(newValue);
}
// set the new value
assignableExpression.SetValue(newValue);
return AstVisitAction.SkipChildren;
}
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
return this.CompileAssignment(assignmentStatementAst, null);
}
/// <summary/>
public virtual object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
return(null);
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
this.CheckAssignmentTarget(assignmentStatementAst.Left, assignmentStatementAst.Operator == TokenKind.Equals, delegate (Ast ast) {
this._parser.ReportError(ast.Extent, ParserStrings.InvalidLeftHandSide, new object[0]);
});
return AstVisitAction.Continue;
}
public virtual AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
return AstVisitAction.Continue;
}
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst) { return AutomationNull.Value; }
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst) { throw PSTraceSource.NewArgumentException("ast"); }
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
return CompileAssignment(assignmentStatementAst);
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst ast)
{
return(Check(ast));
}
private Expression CompileAssignment(
AssignmentStatementAst assignmentStatementAst,
MergeRedirectExprs generateRedirectExprs = null)
{
var arrayLHS = assignmentStatementAst.Left as ArrayLiteralAst;
var parenExpressionAst = assignmentStatementAst.Left as ParenExpressionAst;
if (parenExpressionAst != null)
{
arrayLHS = parenExpressionAst.Pipeline.GetPureExpression() as ArrayLiteralAst;
}
// If assigning to an array, then we prefer an enumerable result because we use an IList
// to generate the assignments, no sense in converting to object[], or worse, returning a
// single object.
// We should not preserve the partial output if exception is thrown when evaluating right-hand-side expression.
Expression rightExpr = CaptureStatementResults(assignmentStatementAst.Right,
arrayLHS != null ? CaptureAstContext.Enumerable : CaptureAstContext.AssignmentWithoutResultPreservation, generateRedirectExprs);
if (arrayLHS != null)
{
rightExpr = DynamicExpression.Dynamic(PSArrayAssignmentRHSBinder.Get(arrayLHS.Elements.Count), typeof(IList), rightExpr);
}
var exprs = new List<Expression>
{
// Set current position in case of errors.
UpdatePosition(assignmentStatementAst),
ReduceAssignment((ISupportsAssignment)assignmentStatementAst.Left,
assignmentStatementAst.Operator,
rightExpr)
};
return Expression.Block(exprs);
}
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
throw PSTraceSource.NewArgumentException("ast");
}
/// <summary>
/// Visit assignment statement
/// </summary>
/// <param name="assignmentStatementAst"></param>
/// <returns></returns>
public override object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
if (assignmentStatementAst == null)
{
return null;
}
base.VisitAssignmentStatement(assignmentStatementAst);
foreach (var assignTarget in GetAssignmentTargets(assignmentStatementAst.Left))
{
var leftAst = assignTarget;
while (leftAst is AttributedExpressionAst)
{
leftAst = ((AttributedExpressionAst)leftAst).Child;
}
if (leftAst is VariableExpressionAst)
{
var varPath = ((VariableExpressionAst)leftAst).VariablePath;
if (_variables.ContainsKey(AssignmentTarget.GetUnaliasedVariableName(varPath)))
{
var details = _variables[AssignmentTarget.GetUnaliasedVariableName(varPath)];
details.AssignedBlocks.Add(Current);
}
Current.AddAst(new AssignmentTarget(assignmentStatementAst));
}
else
{
// We skip things like $a.test = 3. In this case we will just test
// for variable $a
assignTarget.Visit(this.Decorator);
}
}
return null;
}
/// <summary/>
public virtual AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
return(AstVisitAction.Continue);
}
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
assignmentStatementAst.Right.Accept(this);
foreach (var assignTarget in GetAssignmentTargets(assignmentStatementAst.Left))
{
bool anyAttributes = false;
int convertCount = 0;
ConvertExpressionAst convertAst = null;
var leftAst = assignTarget;
while (leftAst is AttributedExpressionAst)
{
convertCount += 1;
convertAst = leftAst as ConvertExpressionAst;
if (convertAst == null)
{
anyAttributes = true;
}
leftAst = ((AttributedExpressionAst)leftAst).Child;
}
if (leftAst is VariableExpressionAst)
{
// Two below if statements are similar, but there is a difference:
// The first one tells us about the dynamic nature of the local type.
// The second one tells us about the assignment, that happens in this block.
// Potentially there could be more complicated cases like [int[]]($a, $b) = (1,2)
// We don't handle them at all in the variable analysis.
if (anyAttributes || convertCount > 1 ||
(convertAst != null && convertAst.Type.TypeName.GetReflectionType() == null))
{
var varPath = ((VariableExpressionAst)leftAst).VariablePath;
if (varPath.IsAnyLocal())
{
var details = _variables[GetUnaliasedVariableName(varPath)];
details.LocalTupleIndex = ForceDynamic;
}
}
if (!anyAttributes && convertCount <= 1)
{
_currentBlock.AddAst(new AssignmentTarget(assignTarget));
}
}
else
{
// We're not assigning to a simple variable, so visit the left so that variable references get
// marked with their proper tuple slots.
assignTarget.Accept(this);
}
}
return null;
}
public object VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
return(AutomationNull.Value);
}
public override AstVisitAction VisitAssignmentStatement(AssignmentStatementAst assignmentStatementAst)
{
if (string.Equals("$env:PATH", assignmentStatementAst.Left.ToString(), StringComparison.OrdinalIgnoreCase) && Regex.IsMatch(assignmentStatementAst.Right.ToString(), @"\$psScriptRoot", RegexOptions.IgnoreCase))
{
ModuleIntrinsics.Tracer.WriteLine("Module adds itself to the path.", new object[0]);
this.AddsSelfToPath = true;
}
return AstVisitAction.Continue;
}
