public object VisitWhileStatement(WhileStatementAst whileStatementAst)
{
var newCondition = VisitElement(whileStatementAst.Condition);
var newBody = VisitElement(whileStatementAst.Body);
return(new WhileStatementAst(whileStatementAst.Extent, whileStatementAst.Label, newCondition, newBody));
}
public virtual StatementAst VisitWhileStatement(WhileStatementAst whileStatementAst)
{
return(new WhileStatementAst(
whileStatementAst.Extent,
whileStatementAst.Label,
whileStatementAst.Condition?.Rewrite(this, SyntaxKind.Pipeline),
whileStatementAst.Body?.Rewrite(this, SyntaxKind.StatementBlock)));
}
public void ProcessWhileStatement(WhileStatementAst whileStatement)
{
Guard.Against.Null(whileStatement, nameof(whileStatement));
var conditionType = ProcessExpression(whileStatement.ConditionExpression);
if (!(conditionType == DataType.Bool ||
conditionType == DataType.Double ||
conditionType == DataType.Long))
{
throw new SemanticException(
$"While condition should be of bool, double or long type. Provided: {conditionType}");
}
var doneLabel = new Instruction("nop");
var startLabel = new Instruction("nop");
if (CodeGenerationEnabled)
{
CurrentFunction.Builder.Bucket.Add(startLabel);
}
// cond-expr
if (CodeGenerationEnabled)
{
CurrentFunction.Builder.Bucket.AddRange(ExpressionBucket.Pop());
}
// jump(if false) to done
if (CodeGenerationEnabled)
{
CurrentFunction.Builder.Bucket.Add(new object[] { "br.false", doneLabel });
}
// # while-block
EnterWhileDefination(new Builders.WhileBuilder(CurrentWhile, startLabel, doneLabel));
ProcessBlockStatement(whileStatement.WhileBlock);
LeaveWhileDefination();
// jmp .START
if (CodeGenerationEnabled)
{
CurrentFunction.Builder.Bucket.Add(Instruction.Pack("br", startLabel));
}
// .DONE:nop
if (CodeGenerationEnabled)
{
CurrentFunction.Builder.Bucket.Add(doneLabel);
}
}
public static WhileStatementAst Update(
this WhileStatementAst ast,
PipelineBaseAst condition = null,
StatementBlockAst body = null,
string label = null)
{
return(new WhileStatementAst(
ast.Extent,
label ?? ast.Label,
condition?.Clone() ?? ast.Condition?.Clone(),
body?.Clone() ?? ast.Body?.Clone()));
}
public override AstVisitAction VisitWhileStatement(WhileStatementAst whileStatementAst)
{
explanations.Add(new Explanation()
{
Description = $"While '{whileStatementAst.Condition.Extent.Text}' evaluates to true, execute the code in the block {{}}.",
CommandName = "While loop",
HelpResult = HelpTableQuery("about_while"),
TextToHighlight = "while"
}.AddDefaults(whileStatementAst, explanations));
return(AstVisitAction.Continue);
}
public override object VisitWhileStatement(WhileStatementAst whileStatementAst)
{
if (whileStatementAst.Label != null)
{
script_.Write(":" + whileStatementAst.Label + " ");
}
script_.Write("while(");
VisitElement(whileStatementAst.Condition);
script_.Write("){");
VisitElement(whileStatementAst.Body);
script_.Write("}");
return(whileStatementAst);
}
public override AstVisitAction VisitWhileStatement(WhileStatementAst whileStatementAst)
{
var body = VisitSyntaxNode(whileStatementAst.Body);
var condition = VisitSyntaxNode(whileStatementAst.Condition);
var block = body as Block;
if (block == null)
{
block = new Block(body);
}
_currentNode = new While(condition, block);
return(AstVisitAction.SkipChildren);
}
public object VisitWhileStatement(WhileStatementAst whileStatementAst)
{
throw PSTraceSource.NewArgumentException("ast");
}
public override AstVisitAction VisitWhileStatement(WhileStatementAst whileStatementAst)
{
throw new NotImplementedException(); //VisitWhileStatement(whileStatementAst);
}
public override StatementAst VisitWhileStatement(WhileStatementAst whileStatementAst) => VisitStatement(base.VisitWhileStatement(whileStatementAst));
public override AstVisitAction VisitWhileStatement(WhileStatementAst ast)
{
return(DoNextAction(ast));
}
object ICustomAstVisitor.VisitWhileStatement(WhileStatementAst whileStatementAst) => VisitWhileStatement(whileStatementAst);
public object VisitWhileStatement(WhileStatementAst whileStatementAst)
{
Console.WriteLine("Visited an WhileStatementAst.");
return(whileStatementAst);
}
public override AstVisitAction VisitWhileStatement(WhileStatementAst ast)
{
return(AstVisitAction.Continue);
}
public object VisitWhileStatement(WhileStatementAst whileStatementAst)
{
throw new NotImplementedException();
}
public object VisitWhileStatement(WhileStatementAst whileStatementAst)
{
throw new UnexpectedElementException();
}
object ICustomAstVisitor.VisitWhileStatement(WhileStatementAst whileStatementAst) => ProcessRewriter(VisitWhileStatement, whileStatementAst);
/// <summary/> public virtual AstVisitAction VisitWhileStatement(WhileStatementAst whileStatementAst) => DefaultVisit(whileStatementAst);
public object VisitWhileStatement(WhileStatementAst whileStatementAst)
{
return(false);
}
public object VisitWhileStatement(WhileStatementAst whileStatementAst) => null;
// WhileStatementAst Extension Methods
// New Methods Available:
// - CreateNodeFromAST(NodeDepth, NodePosition) => Creates a Node
// - CreateChildNodes ($item in $collection) {} => Creates Child Nodes
public static WhileNode CreateNodeFromAst(this WhileStatementAst _ast, int _depth, int _position, Node _parent, Tree _tree)
{
return(new WhileNode(_ast, _depth, _position, _parent, _tree));
}
public override AstVisitAction VisitWhileStatement(WhileStatementAst whileStatementAst)
{
Console.WriteLine("Visited an WhileStatementAst.");
Console.WriteLine(" " + whileStatementAst.ToString().Replace(Environment.NewLine, Environment.NewLine + " "));
return(AstVisitAction.Continue);
}
public override AstVisitAction VisitWhileStatement(WhileStatementAst whileStatementAst)
{
return(Visit(whileStatementAst));
}
public virtual object VisitWhileStatement(WhileStatementAst whileStatementAst)
{
VisitElement(whileStatementAst.Condition);
VisitElement(whileStatementAst.Body);
return(whileStatementAst);
}
public virtual TResult VisitWhileStatement(WhileStatementAst whileStatementAst) => default(TResult);
public override AstVisitAction VisitWhileStatement(WhileStatementAst whileStatementAst)
{
return(AstVisitAction.SkipChildren);
}
public override AstVisitAction VisitWhileStatement(WhileStatementAst ast)
{
return(Check(ast));
}
public static IEnumerable <Ast> GetChildAst(this WhileStatementAst _ast)
{
return(_ast.Body.FindAll(Args => Args is Ast && Args.Parent == _ast.Body, false));
}
public override AstVisitAction VisitWhileStatement(WhileStatementAst whileStatementAst) => VisitAst(whileStatementAst);