public object VisitIfStatement(IfStatementAst ifStmtAst)
{
Block next = new Block();
int count = ifStmtAst.Clauses.Count;
for (int i = 0; i < count; i++)
{
Tuple <PipelineBaseAst, StatementBlockAst> tuple = ifStmtAst.Clauses[i];
bool flag = (i == (count - 1)) && (ifStmtAst.ElseClause == null);
Block block2 = new Block();
Block block3 = flag ? next : new Block();
tuple.Item1.Accept(this);
this._currentBlock.FlowsTo(block2);
this._currentBlock.FlowsTo(block3);
this._currentBlock = block2;
tuple.Item2.Accept(this);
this._currentBlock.FlowsTo(next);
this._currentBlock = block3;
}
if (ifStmtAst.ElseClause != null)
{
ifStmtAst.ElseClause.Accept(this);
this._currentBlock.FlowsTo(next);
}
this._currentBlock = next;
return(null);
}
public System.Object VisitIfStatement(System.Management.Automation.Language.IfStatementAst ifStmtAst)
{
IScriptExtent mappedExtent = MapExtent(ifStmtAst.Extent);
LinkedList <Tuple <PipelineBaseAst, StatementBlockAst> > mappedClauses = new LinkedList <Tuple <PipelineBaseAst, StatementBlockAst> >();
foreach (Tuple <PipelineBaseAst, StatementBlockAst> c in ifStmtAst.Clauses)
{
mappedClauses.AddLast(
new Tuple <PipelineBaseAst, StatementBlockAst>(
_VisitPipelineBase(c.Item1),
(StatementBlockAst)VisitStatementBlock(c.Item2)
)
);
}
StatementBlockAst mappedElseClause = ifStmtAst.ElseClause != null ? (StatementBlockAst)VisitStatementBlock(ifStmtAst.ElseClause) : null;
return(new IfStatementAst(mappedExtent, mappedClauses, mappedElseClause));
}
/// <summary>
/// Visit if statement
/// </summary>
/// <param name="ifStmtAst"></param>
/// <returns></returns>
public object VisitIfStatement(IfStatementAst ifStmtAst)
{
if (ifStmtAst == null) return null;
Block afterStmt = new Block();
if (ifStmtAst.ElseClause == null)
{
// There is no else, flow can go straight to afterStmt.
_currentBlock.FlowsTo(afterStmt);
}
int clauseCount = ifStmtAst.Clauses.Count;
for (int i = 0; i < clauseCount; i++)
{
var clause = ifStmtAst.Clauses[i];
bool isLastClause = (i == (clauseCount - 1) && ifStmtAst.ElseClause == null);
Block clauseBlock = new Block();
Block nextBlock = isLastClause ? afterStmt : new Block();
clause.Item1.Visit(this);
_currentBlock.FlowsTo(clauseBlock);
_currentBlock.FlowsTo(nextBlock);
_currentBlock = clauseBlock;
clause.Item2.Visit(this);
_currentBlock.FlowsTo(afterStmt);
_currentBlock = nextBlock;
}
if (ifStmtAst.ElseClause != null)
{
ifStmtAst.ElseClause.Visit(this);
_currentBlock.FlowsTo(afterStmt);
}
_currentBlock = afterStmt;
return null;
}
public override AstVisitAction VisitIfStatement(IfStatementAst ast) { return CheckParent(ast); }
public object VisitIfStatement(IfStatementAst ifStmtAst)
{
return(false);
}
public object VisitIfStatement(IfStatementAst ifStmtAst)
{
throw PSTraceSource.NewArgumentException("ast");
}
public override AstVisitAction VisitIfStatement(IfStatementAst ast)
{
return(Check(ast));
}
public override AstVisitAction VisitIfStatement(IfStatementAst ifStatementAst)
{
//// 8.3 The if statement
//// The pipeline controlling expressions must have type bool or be implicitly convertible to that
//// type. The else-clause is optional. There may be zero or more elseif-clauses.
////
//// If the top-level pipeline tests True, then its statement-block is executed and execution of
//// the statement terminates. Otherwise, if an elseif-clause is present, if its pipeline tests
//// True, then its statement-block is executed and execution of the statement terminates.
//// Otherwise, if an else-clause is present, its statement-block is executed.
foreach (var clause in ifStatementAst.Clauses)
{
var condition = EvaluateAst(clause.Item1);
// null is false
if (condition == null) continue;
else if (condition is IList && ((IList)condition).Count == 0) continue;
else if (condition is PSObject)
{
var baseObject = ((PSObject)condition).BaseObject;
if (baseObject is bool && ((bool)baseObject) == false) continue;
}
else throw new NotImplementedException(clause.Item1.ToString());
this._pipelineCommandRuntime.WriteObject(EvaluateAst(clause.Item2));
return AstVisitAction.SkipChildren;
}
if (ifStatementAst.ElseClause != null)
{
// iterating over a statement list should be its own method.
foreach (var statement in ifStatementAst.ElseClause.Statements)
{
this._pipelineCommandRuntime.WriteObject(EvaluateAst(statement));
}
}
return AstVisitAction.SkipChildren;
}
public override AstVisitAction VisitIfStatement(IfStatementAst ifStmtAst)
{
return(AstVisitAction.Continue);
}
public object VisitIfStatement(IfStatementAst ifStmtAst) { throw new UnexpectedElementException(); }
public override AstVisitAction VisitIfStatement(IfStatementAst ifStmtAst)
{
// If statements are accepted if their conditions and bodies are accepted.
return AstVisitAction.Continue;
}
/// <summary/> public virtual AstVisitAction VisitIfStatement(IfStatementAst ifStmtAst) => DefaultVisit(ifStmtAst);
public object VisitIfStatement(IfStatementAst ifStmtAst)
{
int count = ifStmtAst.Clauses.Count;
Tuple<BlockExpression, Expression>[] tupleArray = new Tuple<BlockExpression, Expression>[count];
for (int i = 0; i < count; i++)
{
Tuple<PipelineBaseAst, StatementBlockAst> tuple = ifStmtAst.Clauses[i];
BlockExpression expression = Expression.Block(this.UpdatePosition(tuple.Item1), this.CaptureStatementResults(tuple.Item1, CaptureAstContext.Condition, null).Convert(typeof(bool)));
Expression expression2 = this.Compile(tuple.Item2);
tupleArray[i] = Tuple.Create<BlockExpression, Expression>(expression, expression2);
}
Expression ifFalse = null;
if (ifStmtAst.ElseClause != null)
{
ifFalse = this.Compile(ifStmtAst.ElseClause);
}
Expression expression4 = null;
for (int j = count - 1; j >= 0; j--)
{
BlockExpression test = tupleArray[j].Item1;
Expression ifTrue = tupleArray[j].Item2;
if (ifFalse != null)
{
expression4 = ifFalse = Expression.IfThenElse(test, ifTrue, ifFalse);
}
else
{
expression4 = ifFalse = Expression.IfThen(test, ifTrue);
}
}
return expression4;
}
// We skip a bunch of random statements because we can't really be accurate detecting functions/classes etc. that
// are conditionally defined.
public override AstVisitAction VisitIfStatement(IfStatementAst ifStmtAst) { return AstVisitAction.SkipChildren; }
/// <summary/>
public virtual object VisitIfStatement(IfStatementAst ifStmtAst) { return null; }
/// <summary/>
public virtual object VisitIfStatement(IfStatementAst ifStmtAst)
{
return _decorated.VisitIfStatement(ifStmtAst);
}
public override AstVisitAction VisitIfStatement(IfStatementAst ast)
{
return this.Check(ast);
}
public object VisitIfStatement(IfStatementAst ifStmtAst) { return AutomationNull.Value; }
public virtual AstVisitAction VisitIfStatement(IfStatementAst ifStmtAst)
{
return AstVisitAction.Continue;
}
public object VisitIfStatement(IfStatementAst ifStmtAst) { throw PSTraceSource.NewArgumentException("ast"); }
/// <summary/>
public virtual object VisitIfStatement(IfStatementAst ifStmtAst)
{
return(null);
}
public object VisitIfStatement(IfStatementAst ifStmtAst)
{
int clauseCount = ifStmtAst.Clauses.Count;
var exprs = new Tuple<BlockExpression, Expression>[clauseCount];
for (int i = 0; i < clauseCount; ++i)
{
IfClause ifClause = ifStmtAst.Clauses[i];
var cond = Expression.Block(
UpdatePosition(ifClause.Item1),
CaptureStatementResults(ifClause.Item1, CaptureAstContext.Condition).Convert(typeof(bool)));
var body = Compile(ifClause.Item2);
exprs[i] = Tuple.Create(cond, body);
}
Expression elseExpr = null;
if (ifStmtAst.ElseClause != null)
{
elseExpr = Compile(ifStmtAst.ElseClause);
}
Expression result = null;
for (int i = clauseCount - 1; i >= 0; --i)
{
var cond = exprs[i].Item1;
var body = exprs[i].Item2;
if (elseExpr != null)
{
result = elseExpr = Expression.IfThenElse(cond, body, elseExpr);
}
else
{
result = elseExpr = Expression.IfThen(cond, body);
}
}
return result;
}
public object VisitIfStatement(IfStatementAst ifStmtAst)
{
return false;
}
public override AstVisitAction VisitIfStatement(IfStatementAst ifStmtAst)
{
return AstVisitAction.Continue;
}
/// <summary/>
public virtual AstVisitAction VisitIfStatement(IfStatementAst ifStmtAst)
{
return(AstVisitAction.Continue);
}
public object VisitIfStatement(IfStatementAst ifStmtAst)
{
Block next = new Block();
int count = ifStmtAst.Clauses.Count;
for (int i = 0; i < count; i++)
{
Tuple<PipelineBaseAst, StatementBlockAst> tuple = ifStmtAst.Clauses[i];
bool flag = (i == (count - 1)) && (ifStmtAst.ElseClause == null);
Block block2 = new Block();
Block block3 = flag ? next : new Block();
tuple.Item1.Accept(this);
this._currentBlock.FlowsTo(block2);
this._currentBlock.FlowsTo(block3);
this._currentBlock = block2;
tuple.Item2.Accept(this);
this._currentBlock.FlowsTo(next);
this._currentBlock = block3;
}
if (ifStmtAst.ElseClause != null)
{
ifStmtAst.ElseClause.Accept(this);
this._currentBlock.FlowsTo(next);
}
this._currentBlock = next;
return null;
}
public object VisitIfStatement(IfStatementAst ifStmtAst)
{
return(AutomationNull.Value);
}
public object VisitIfStatement(IfStatementAst ifStmtAst)
{
throw new NotImplementedException();
}