public System.Object VisitScriptBlockExpression(System.Management.Automation.Language.ScriptBlockExpressionAst scriptBlockExpressionAst)
{
IScriptExtent mappedExtent = MapExtent(scriptBlockExpressionAst.Extent);
ScriptBlockAst mappedScriptBlock = (ScriptBlockAst)VisitScriptBlock(scriptBlockExpressionAst.ScriptBlock);
return(new ScriptBlockExpressionAst(mappedExtent, mappedScriptBlock));
}
/// <summary/>
public virtual object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return _decorated.VisitScriptBlockExpression(scriptBlockExpressionAst);
}
/// <summary>
/// Visit ScriptBlockExpression
/// </summary>
/// <param name="scriptBlockExpressionAst"></param>
/// <returns></returns>
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
// Don't recurse into the script block, it's variables are distinct from the script block
// we're currently analyzing.
return null;
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
this.ReportError(scriptBlockExpressionAst, () => ParserStrings.ScriptBlockNotSupportedInDataSection, new object[0]);
return AstVisitAction.Continue;
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
// The script block is not visited until it is executed, executing a script block expression node simply
// builds a new script block without analyzing it.
//
// A wrapper is returned so we can cache the script block and return clones that are pre-compiled if
// the expression is evaluated more than once (e.g. in a loop, or if the containing function/script
// is called again.)
return Expression.Call(
Expression.Constant(new ScriptBlockExpressionWrapper(scriptBlockExpressionAst.ScriptBlock)),
CachedReflectionInfo.ScriptBlockExpressionWrapper_GetScriptBlock,
_executionContextParameter,
ExpressionCache.Constant(false)
);
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return(ScriptBlock.Create(scriptBlockExpressionAst.Extent.Text));
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return new ScriptBlock(scriptBlockExpressionAst.ScriptBlock, false);
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
if (scriptBlockExpressionAst.Extent.ContainsLineAndColumn(_breakpoint.Line, _breakpoint.Column))
{
_result = true;
return AstVisitAction.StopVisit;
}
// We don't need to visit the body, we're just checking extents of the topmost functions.
// We'll visit the bodies eventually, but only when the nested function/script is executed.
return AstVisitAction.SkipChildren;
}
/// <summary/> public virtual AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst) => DefaultVisit(scriptBlockExpressionAst);
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst ast)
{
return(CheckScriptBlock(ast));
}
/// <summary/>
public virtual object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return(null);
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return Expression.Call(Expression.Constant(new ScriptBlockExpressionWrapper(scriptBlockExpressionAst.ScriptBlock)), CachedReflectionInfo.ScriptBlockExpressionWrapper_GetScriptBlock, _executionContextParameter, ExpressionCache.Constant(false));
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return(this.CheckingAttributeArgument);
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return AstVisitAction.SkipChildren;
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst ast) { return CheckParent(ast); }
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
_symbolTable.EnterScope(scriptBlockExpressionAst.ScriptBlock, ScopeType.ScriptBlock);
return AstVisitAction.Continue;
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
ConfigurationDefinitionAst configAst = Ast.GetAncestorAst<ConfigurationDefinitionAst>(scriptBlockExpressionAst);
//
// Check within a configuration statement, if there is undefined DSC resources (DynamicKeyword) was used
// for example,
//
// Configuration TestConfig
// {
// SomeDSCResource bla
// {
// Property = "value"
// }
// }
//
// SomeDSCResource is not default DSC Resource, in this case, a parse error should be generated to
// indicate that SomeDSCResource is not defined. Parser generates a command call (CommandAst) to function
// "SomeDSCResource" followed by a ScriptBlockExpressionAst. Following code check if there are patterns
// that one ScriptBlockExpressionAst follows a CommandAst, and report Parser error(s) if true.
//
if (configAst != null)
{
var ast = scriptBlockExpressionAst.Parent; // Traverse all ancestor ast to find NamedBlockAst
PipelineAst statementAst = null; // The nearest ancestor PipelineAst of the 'scriptBlockExpressionAst'
int ancestorNodeLevel = 0; // The nearest ancestor PipelineAst should be two level above the 'scriptBlockExpressionAst'
while ((ast != null) && (ancestorNodeLevel <= 2))
{
//
// Find nearest ancestor NamedBlockAst
//
var namedBlockedAst = ast as NamedBlockAst;
if ((namedBlockedAst != null) && (statementAst != null) && (ancestorNodeLevel == 2))
{
int index = namedBlockedAst.Statements.IndexOf(statementAst);
if (index > 0)
{
//
// Check if previous Statement is CommandAst
//
var pipelineAst = namedBlockedAst.Statements[index - 1] as PipelineAst;
if (pipelineAst != null && pipelineAst.PipelineElements.Count == 1)
{
var commandAst = pipelineAst.PipelineElements[0] as CommandAst;
if (commandAst != null &&
commandAst.CommandElements.Count <= 2 &&
commandAst.DefiningKeyword == null)
{
// Here indicates a CommandAst followed by a ScriptBlockExpression,
// which is invalid if the DSC resource is not defined
var commandNameAst = commandAst.CommandElements[0] as StringConstantExpressionAst;
if (commandNameAst != null)
{
_parser.ReportError(commandNameAst.Extent, () => ParserStrings.ResourceNotDefined, commandNameAst.Extent.Text);
}
}
}
}
break;
}
statementAst = ast as PipelineAst;
ancestorNodeLevel++;
ast = ast.Parent;
}
}
return AstVisitAction.Continue;
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
if (scriptBlockExpressionAst.Extent.ContainsLineAndColumn(this._breakpoint.Line, this._breakpoint.Column))
{
this._result = true;
return AstVisitAction.StopVisit;
}
return AstVisitAction.SkipChildren;
}
public virtual AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return AstVisitAction.Continue;
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
throw new UnexpectedElementException();
}
/// <summary/>
public virtual AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return(AstVisitAction.Continue);
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
this.ReportError(scriptBlockExpressionAst, () => ParserStrings.ScriptBlockNotSupportedInDataSection, new object[0]);
return(AstVisitAction.Continue);
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
// Returning a ScriptBlock instance itself is OK, bad stuff only happens
// when invoking one (which is blocked)
return(true);
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst ast)
{
return this.CheckScriptBlock(ast);
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
_symbolTable.EnterScope(scriptBlockExpressionAst.ScriptBlock, ScopeType.ScriptBlock);
return(AstVisitAction.Continue);
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
CheckIsConstant(scriptBlockExpressionAst, "Caller to verify ast is constant");
return(new ScriptBlock(scriptBlockExpressionAst.ScriptBlock, isFilter: false));
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return null;
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
// A script block expression is a constant when we're generating metadata, but when
// we're generating code, we need to create new script blocks so we can't use a constant.
// Also - we have no way to describe a script block when generating .Net metadata, so
// we must disallow script blocks as attribute arguments on/inside a class.
return CheckingAttributeArgument && !CheckingClassAttributeArguments;
}
/// <summary>
/// Visit ScriptBlock
/// </summary>
/// <param name="scriptBlockExpressionAst"></param>
/// <returns></returns>
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
// We don't want to discover any variables in script block expressions - they get their own scope.
return AstVisitAction.Continue;
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
CheckIsConstant(scriptBlockExpressionAst, "Caller to verify ast is constant");
return new ScriptBlock(scriptBlockExpressionAst.ScriptBlock, isFilter: false);
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
ThrowError(new ScriptBlockToPowerShellNotSupportedException(
"CantConvertWithScriptBlocks",
null,
AutomationExceptions.CantConvertWithScriptBlocks),
scriptBlockExpressionAst);
return AstVisitAction.SkipChildren;
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
// Returning a ScriptBlock instance itself is OK, bad stuff only happens
// when invoking one (which is blocked)
return true;
}
public override object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
_symbolResolver._symbolTable.LeaveScope();
return null;
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return ScriptBlock.Create(scriptBlockExpressionAst.Extent.Text);
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
this._pipelineCommandRuntime.WriteObject(new ScriptBlock(scriptBlockExpressionAst.ScriptBlock));
return AstVisitAction.SkipChildren;
}
public override object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
_symbolResolver._symbolTable.LeaveScope();
return(null);
}
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
throw new NotImplementedException(); //VisitScriptBlockExpression(scriptBlockExpressionAst);
}
/// <summary>
/// Similar to visitnamedblock
/// </summary>
/// <param name="sbAst"></param>
/// <returns></returns>
public override AstVisitAction VisitScriptBlockExpression(ScriptBlockExpressionAst sbAst)
{
return VisitActionHelper(sbAst);
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
return this.CheckingAttributeArgument;
}
public object VisitScriptBlockExpression(ScriptBlockExpressionAst scriptBlockExpressionAst)
{
var endBlock = scriptBlockExpressionAst.ScriptBlock.EndBlock;
foreach (var statement in endBlock.Statements)
{
Visit(statement);
}
return unit;
}
